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  • 51.
    Bachour, Raougina-Laouisa
    et al.
    Swedish University of Agricultural Sciences.
    Golovko, Oksana
    Swedish University of Agricultural Sciences.
    Kellner, Martin
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Pohl, Johannes
    Swedish University of Agricultural Sciences.
    Behavioral effects of citalopram, tramadol, and binary mixture in zebrafish (Danio rerio) larvae2020Ingår i: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 238, artikel-id 124587Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Pharmaceuticals are emerging as environmentally problematic compounds. As they are often not appropriately removed by sewage treatment plants, pharmaceutical compounds end up in surface water environments worldwide at concentrations in the ng to μg L−1 range. There is a need to further explore single compound and mixture effects using e.g. in vivo test model systems. We have investigated, for the first time, behavioral effects in larval zebrafish (Danio rerio) exposed to a binary mixture of an antidepressant drug (citalopram) and a synthetic opioid (tramadol). Citalopram and tramadol have a similar mode of action (serotonin reuptake inhibition) and are known to produce drug-drug interactional effects resulting in serotonin syndrome (SS) in humans. Zebrafish embryo-larvae were exposed to citalopram, tramadol and 1:1 binary mixture from fertilization until 144 h post fertilization. No effects on heart rate, spontaneous tail coiling, or death/malformations were observed in any treatment at tested concentrations. Behavior (hypoactivity in dark periods) was on the other hand affected, with lowest observed effect concentrations (LOECs) of 373 μg L−1 for citalopram, 320 μg L−1 for tramadol, and 473 μg L−1 for the 1:1 mixture. Behavioral EC50 was calculated to be 471 μg L−1 for citalopram, 411 μg L−1 for tramadol, and 713 μg L−1 for the 1:1 mixture. The results of this study conclude that tramadol and citalopram produce hypoactivity in 144 hpf zebrafish larvae. Further, a 1:1 binary mixture of the two caused the same response, albeit at a higher concentration, possibly due to SS.

  • 52.
    Backlund, Cecilia
    Södertörns högskola, Institutionen för livsvetenskaper.
    Förslag till kväverening i Forsåsystemet genom våtmarksetablering2011Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [en]

    The last hundred years humans have drastically changed the amount of available nitrogen in nature. Today human activities release twice as much available nitrogen as all natural processes are doing together. We also have degraded nature´s possibilities to take care of nitrogen through the draining of wetlands and straightening of rivers. In order to regain the potential of nitrogen retention in the water systems there now requires a reshape of the landscape we live in. A planned expansion of the mining activities in Garpenberg, Dalarna, would double the content of nitrogen in the waters below the mine. Water that already contains a high amount of nitrogen. To reduce the risk of eutrophication and increased pressure on the content of oxygen in the watercourses, in this study I investigate where a wetland with refine of nitrogen as a purpose can be located and constructed in the system of Forsån. By topographic studies one appropriate area where the river of Garpenberg flows past Krommetsbo is found. The potential of the area is supported by an inventory of species which are likely to colonize the wetland. The Krommetsbo-wetland will be able to contribute to the reduction of nitrogen in the lower parts of the system. However, additional measures are needed to change the situation in the upper parts of the system.

  • 53.
    Backman, Agneta
    et al.
    Södertörns högskola, Institutionen för kemi, biologi, geografi och miljövetenskap. Karolinska Institutet.
    Jansson, Janet K
    Södertörns högskola, Institutionen för kemi, biologi, geografi och miljövetenskap. SLU.
    Degradation of 4-chlorophenol at low temperature and during extreme temperature fluctuations by Arthrobacter chlorophenolicus A62004Ingår i: Microbial Ecology, ISSN 0095-3628, E-ISSN 1432-184X, Vol. 48, nr 2, s. 246-253Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Low average temperatures and temperature fluctuations in temperate soils challenge the efficacy of microbial strains used for clean up of pollutants. In this study, we investigated the cold tolerance of Arthrobacter chlorophenolicus A6, a microorganism previously shown to degrade high concentrations of 4-chlorophenol at 28degreesC. Luciferase activity from a luc-tagged derivative of the strain (A6L) was used to monitor the metabolic status of the population during 4-chlorophenol degradation. The A6L strain could degrade 200-300 mug mL(-1) 4-chlorophenol in pure cultures incubated at 5degreesC, although rates of degradation, growth and the metabolic status of the cells were lower at 5degreesC compared to 28degreesC. When subjected to temperature fluctuations between 5 and 28degreesC, A6L continued to degrade 4-chlorophenol and remained active. In soil microcosm experiments, the degradation rates were significantly faster the first week at 28degreesC, compared to 5degreesC. However, this difference was no longer seen after 7 days, and equally low 4-chlorophenol concentrations were reached after 17 days at both temperatures. During 4-chlorophenol degradation in soil, CFU and luciferase activity values remained constant at both 5 and 28degreesC. However, once most of the 4-chlorophenol was degraded, both values decreased by 1-1.5 logarithmic values at 28degreesC, whereas they remained constant at 5degreesC, indicating a high survival of the cells at low temperatures. Because of the ability of A. chlorophenolicus A6 to degrade high concentrations of 4-chlorophenol at 5degreesC, together with its tolerance to temperature fluctuations and stress conditions found in soil, this strain is a promising candidate for bioaugmentation of chlorophenol-contaminated soil in temperate climates.

  • 54.
    Bathmann, Ulrich
    et al.
    Leibniz-Institute for Baltic Sea Research, Warnemünde, Germany.
    Schubert, Hendrik
    University of Rostock, Rostock, Germany.
    Andrén, Elinor
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Tuomi, Laura
    Finnish Meteorological Institute, Helsinki, Finland.
    Radziejewska, Teresa
    University of Szczecin, Szczecin, Poland.
    Kulinski, Karol
    Institute of Oceanology of the Polish Academy of Sciences, Sopot, Poland.
    Chubarenko, Irina
    Shirshov Institute of Oceanology of the Russian Academy of Sciences, Moscow, Russia.
    Editorial: Living Along Gradients: Past, Present, Future2020Ingår i: Frontiers in Marine Science, E-ISSN 2296-7745, Vol. 6, artikel-id 801Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The Baltic Sea is a geologically and evolutionarily young part of the coastal ocean that experienced, in its past, several severe environmental changes. In its present state, the Baltic Sea is characterized by both horizontal and vertical gradients of environmental conditions. As a huge estuary, it shows a west to east/south to north surface salinity gradient from 24 in Kattegat to nearly freshwater in the Bothnian Bay. The vertical salinity and oxygen gradients result in stratification which causes hypoxic and sulfidic anoxic conditions in deep basins. These gradient systems are impacted by natural and anthropogenic changes due to physico-chemical driving forces, varying over time and space. Gradient environments produce an imprint on both the structure and function of the biological systems and influence biogeochemical cycling. Besides, coastal seas in general and the Baltic Sea in particular, experience constant and direct influence from land with consequences to matter and energy cycles, biogeochemical interactions, energy fluxes, and sediment dynamics. “Living along gradients: past, present, future” in the Baltic are today’s very important aspects that rise questions like which of the effects we are detecting occur naturally, and which are driven by human activities. Deciphering past environmental changes and their causes provide keys to understand and simulate possible future scenarios, all of which should rise societal awareness and implementation of appropriate marine and coastal policies. Present-day knowledge on the dynamics of gradient systems, on the processes that affect the coastal sea environment, the results of interaction between coastal seas and society, the detection or reconstruction of past and present changes on time scales from inter-annual to millennial, and future change models are summarized here, with the idea to stimulate scientific exchange on most complex questions, addressing them from different perspectives.

  • 55.
    Benulic, Kajsa-Stina
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    A Beef with Meat: Media and Audience Framings of Environmentally Unsustainable Production and Consumption2016Doktorsavhandling, monografi (Övrigt vetenskapligt)
    Abstract [en]

    The aim of this thesis is to identify potential routes of participation in environmentally sustainable changes of the Swedish meat production and consumption. Changes are needed as meat production and consumption have been linked to serious environmental problems, such as climate change, biodiversity loss, and land use change. Scientists, international organizations, and Swedish government authorities have identified individual consumer responsibility as key in making that change happen. The public is to be informed and educated to make more environmentally sustainable choices as meat consumers, and become more supportive of policy instruments. This strategy, which mirrors the dominant approach to solving environmental problems, is suggested by government authorities despite their suspicion that media should have made most Swedes aware of the environmental impacts of meat.

    In this thesis potential participatory routes are identified through the analysis of Swedish news media and audience framings of meat production and consumption. Media framing is studied as an important source of information, and perhaps motivation, crucial in the individualized consumer responsibility approach. The media framing is studied through content analysis of mainstream and alternative radical newspapers. The audiences’ framing of meat may be influenced by media, but also by their everyday experiences, beliefs, values, and opinions. Focus group discussions with reception elements are the methods used for studying how audiences frame meat and use media in the process. The concept of participation is broadened to include passive and active forms to capture in which roles individuals consider to contribute to changing meat production and consumption. It is not self-evident that routes to change must include individual participation, since responsibility may be attributed to other actors, both by media and their audiences.

    The results imply only participatory route supported by media and audience framing. It is the one that mirrors the individualized consumer responsibility approach to solving environmental problems. The major barrier to the route is the audiences’ perceived inability to act. In an alternative route supported by both media and audience framing, state centered actors are made responsible for enforcing change. Here, the major barrier is the perceived unlikeliness of powerful actors assuming responsibility. Audiences construct no citizen roles for themselves to participate in. Neither does media, who only address audiences as consumers. Based on these findings it is suggested that the outlook for the individualized responsibility approach to making meat production and consumption environmentally sustainable is gloomy. At least if it the approach is to continuously rely on the information and motivation offered by media.

  • 56. Berg, H
    et al.
    Francis, J
    Souter, Petra
    Södertörns högskola, Avdelning Naturvetenskap.
    Support to marine research for sustainable management of marine and coastal resources in the Western Indian Ocean2002Ingår i: Ambio, ISSN 0044-7447, E-ISSN 1654-7209, Vol. 31, nr 7-8, s. 597-601Artikel i tidskrift (Refereegranskat)
  • 57.
    Bergfeldt, Vendela
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik.
    Microbes that never sleep: A multidisciplinary study of the antibiotic resistance management in Sweden2016Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    The hypotheses of this study are that reduction and rational usage of antibiotics reduces development of antibiotic resistance. In Sweden, the trends do not follow this pattern. Despite a decrease in prescriptions of antibiotics, there is an increase in the number of patients infected with Methicillin-resistant Staphylococcus Aureus (MRSA), Extended Spectrum Beta-Lactamases (ESBL) and ESBL selecting for carbapenem-resistance (ESBLCARBA). This study aims to study factors affecting antibiotic resistance management. An additional aim is to use a multidisciplinary approach for a subject that has mostly been studied with quantitative methods. First, linear regressions investigated any possible significant changes of prescription rates in outpatient care, hospital usage of antibiotic groups and antibiotic resistance. After this, nine interviews were conducted with physicians in outpatient care, hospital care and with representatives from the Swedish Strategic Programme for the Rational Use of Antimicrobial Agents and Surveillance of Resistance (Strama), a network working for Swedish prevention against antibiotics resistance. There was a significant decrease in the number of prescriptions of antibiotics in outpatient care among all Swedish counties and a small, but significant increase of antibiotics used in hospitals. The number of patients infected with multidrug resistant bacteria also show a significant increase. The interviews revealed that health care workers in all counties follow the same guidelines and try to be as specific as possible in choosing antibiotics to hit specific bacteria. The respondents suggested migration and extended travelling as explanations to the growing number of cases of multidrug resistant bacteria. Further, two major factors emerged as important for an efficient antibiotic resistance management; Education/knowledge and Discussion. The results indicate a need for further research on rational usage of antibiotics and the use of broad-spectrum antibiotics in hospital care, rather than the reduction through prescriptions. The results indicate that rational usage has a bigger impact than reduction. Using a multidisciplinary approach gave a broader perspective on the issue and future studies should see the possibilities of mixing quantitative and qualitative studies.

  • 58.
    Berini, Francesca
    et al.
    Politecnico di Milano and University of Insubria, Varese, Italy.
    Presti, Ilaria
    Politecnico di Milano and University of Insubria, Varese, Italy / Chemo Biosynthesis, Corana, Pavia, Italy.
    Beltrametti, Fabrizio
    Actygea, Gerenzano, Varese, Italy.
    Pedroli, Marco
    Vårum, Kjell M
    Norwegian University of Science and Technology, Trondheim, Norway.
    Pollegioni, Loredano
    Politecnico di Milano and University of Insubria, Varese, Italy.
    Sjöling, Sara
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Marinelli, Flavia
    Politecnico di Milano and University of Insubria, Varese, Italy.
    Production and characterization of a novel antifungal chitinase identified by functional screening of a suppressive-soil metagenome2017Ingår i: Microbial Cell Factories, ISSN 1475-2859, E-ISSN 1475-2859, Vol. 16, nr 1, artikel-id 16Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    BACKGROUND: Through functional screening of a fosmid library, generated from a phytopathogen-suppressive soil metagenome, the novel antifungal chitinase-named Chi18H8 and belonging to family 18 glycosyl hydrolases-was previously discovered. The initial extremely low yield of Chi18H8 recombinant production and purification from Escherichia coli cells (21 μg/g cell) limited its characterization, thus preventing further investigation on its biotechnological potential.

    RESULTS: We report on how we succeeded in producing hundreds of milligrams of pure and biologically active Chi18H8 by developing and scaling up to a high-yielding, 30 L bioreactor process, based on a novel method of mild solubilization of E. coli inclusion bodies in lactic acid aqueous solution, coupled with a single step purification by hydrophobic interaction chromatography. Chi18H8 was characterized as a Ca(2+)-dependent mesophilic chitobiosidase, active on chitin substrates at acidic pHs and possessing interesting features, such as solvent tolerance, long-term stability in acidic environment and antifungal activity against the phytopathogens Fusarium graminearum and Rhizoctonia solani. Additionally, Chi18H8 was found to operate according to a non-processive endomode of action on a water-soluble chitin-like substrate.

    CONCLUSIONS: Expression screening of a metagenomic library may allow access to the functional diversity of uncultivable microbiota and to the discovery of novel enzymes useful for biotechnological applications. A persisting bottleneck, however, is the lack of methods for large scale production of metagenome-sourced enzymes from genes of unknown origin in the commonly used microbial hosts. To our knowledge, this is the first report on a novel metagenome-sourced enzyme produced in hundreds-of-milligram amount by recovering the protein in the biologically active form from recombinant E. coli inclusion bodies.

  • 59.
    Berkmann, Anna
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik.
    Greening Potentials and Limits of Eco-Labelling Schemes in the EU: A policy evaluation with a focus on small firms in the German coffee-processing sector2015Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    As SMEs transformation to sustainable practices in manufacturing, processing and services, is declared to be the key to a green growth model, the research in this thesis aims to understand in what way eco-labelling can be a part of that. In order to approach this complex issue, the thesis aims to identify the greening potential and the limits of contemporary eco-labelling schemes for SME product within the German coffee-processing sector. With regard to that, the thesis applied the policy evaluation method "Program Theory Evaluation" (PTE), which assesses a policy in place and thus provides information how the introduction and the function of eco-labelling schemes is observed and perceived by German coffee-processing SMEs (GCPS). Hence, based on a policy evaluation from a rational perspective, which has the focus on the policy’s problem-solving process and implementation cycle, the thesis reveals how eco-labelling schemes’ underlying theoretical greening strategy act in practice to German coffee-processing SME (GCPS). Thereby it could be evaluated that eco-labelling schemes imply shortcomings to address and green GCPS high quality coffee products. As the PTE-method aims also on optimizing the policy’s rationalisation, the inappropriate or failed implementation of eco-labelling schemes by GCPS has been further explored. To grasp the eco-labelling schemes extent of limits to green GCPS products, the thesis compares and analyses the policy evaluation results against the backdrop of eco-labelling schemes’ normative theoretical policy conception and in the light of "Environmental Authority of Political Consumerism (Ecological Modernisation Theory)". With regard to that, the thesis fosters a policy learning process and uncovers that eco-labelling scheme eco-labelling schemes potential to green GCPS products is limited and conditioned to this a lower level of sustainable value as they are focused to supply mainly the demand for mainstream coffee products. Hence, the thesis concludes that it is not the underlying rationality of eco-labelling schemes, namely being a consumer-oriented and market-based policy instrument that does not apply to green GCPS products. However, this opens up a new perspective as it points out a sustainable quality gap between products using eco-labelling schemes and non-labelled GCPS high quality products. In return this raises considerations in terms of improving eco-labelling schemes’ contribution to sustainable development. Thus the thesis argues to optimize their rationalization with regard to GCPS high quality products as frontrunners of tomorrow’s sustainability.

  • 60. Björck, Jonas
    et al.
    Andrén, Thomas
    Wastegård, Stefan
    Possnert, Göran
    Schoning, Kristian
    An event stratigraphy for the Last Glacial-Holocene transition in eastern middle Sweden: results from investigations of varved clay and terrestrial sequences2002Ingår i: Quaternary Science Reviews, ISSN 0277-3791, E-ISSN 1873-457X, Vol. 21, nr 12/13, s. 1489-1501Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    This paper presents an event stratigraphy for the Last Glacial-Holocene transition in eastern middle Sweden. The event stratigraphy for eastern middle Sweden comprises ten events and covers the time-span from ca 12,900 to 10,200 cal yr BP. The local event stratigraphy has been linked to the GRIP isotopic event stratigraphy by different correlations. The onset of the Younger Dryas is dated to 12,650 cal yr BP. This cold event lasted for ca 1125 cal yr in the area. The Vedde Ash (ca 12,000 cal yr BP) has been recorded in two terrestrial sequences, which makes it possible to exactly link the event stratigraphy to the GRIP ice-core and to marine cores in the North Atlantic region. The final drainage of the Baltic Ice Lake has been dated to ca 11,560 cal yr BP, which predates the Younger Dryas/Preboreal climatic boundary with ca 35 yr. An early Holocene cold event has been detected both in terrestrial and varved clay sequences at ca 11,305-11,185 cal yr BP. This cold event coincides almost exactly with a brackish water phase in the Baltic Sea. A previously unrecorded early Holocene tephra horizon has been found in lacustrine sediments at ca 10,200 cal yr BP.

  • 61.
    Björnberg, Karin Edvardsson
    et al.
    KTH.
    Karlsson, Mikael
    KTH.
    Gilek, Michael
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Hansson, Sven Ove
    KTH.
    Climate and environmental science denial: A review of the scientific literature published in 1990–20152017Ingår i: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 167, s. 229-241Artikel, forskningsöversikt (Refereegranskat)
    Abstract [en]

    Abstract Denial of scientific findings is neither a new nor an unexplored phenomenon. In the area of environmental science and policy though, the research on denial has not been systematically summarized and analyzed. This article reviews 161 scientific articles on environmental and climate science denial published in peer reviewed international journals in the last 25 years and aims to both identify research gaps and enable learning on the phenomenon. Such knowledge is needed for the increasingly important task to provide effective response to science denial, in order to put an end to its influence on environmental policy making. The review, which is based on articles found in the databases Web of Science, Scopus and Philosopher's Index, shows that denial by far is most studied in relation to climate change, with a focus on Anglo-American countries, where this form of denial is most common. Other environmental issues and other geographical areas have received much less scientific attention. While the actors behind climate science denial, their various motives and the characteristics of their operations have been thoroughly described, more comparative research between issues and countries is needed in order to draw reliable conclusions about the factors explaining the peculiarities of denial. This may in turn lay the ground for developing and actually testing the effectiveness and efficiency of strategies to counter environmental science denial. Irrespective of the ambitions of environmental goals, science-based policies are always preferable. The scientific community therefore needs to increase its efforts to dismantle false claims and to disclose the schemes of denialists.

  • 62.
    Bolinder, K.
    et al.
    Stockholm University.
    Norbäck Ivarsson, Lena
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Humphreys, A. M.
    Stockholm University / Imperial College London, UK.
    Ickert-Bond, S. M.
    University of Alaska Fairbanks, Fairbanks, AK, USA / Arizona State University, Tempe, AZ, USA.
    Han, F.
    China University of Geosciences, Wuhan, China.
    Hoorn, C.
    University of Amsterdam, Amsterdam, The Netherlands.
    Rydin, C.
    Stockholm University.
    Pollen morphology of Ephedra (Gnetales) and its evolutionary implications2016Ingår i: Grana, ISSN 0017-3134, E-ISSN 1651-2049, Vol. 55, nr 1, s. 24-51Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The Ephedra lineage can be traced at least to the Early Cretaceous. Its characteristically polyplicate pollen is well-represented in the fossil record and is frequently used as an indicator of paleoclimate. However, despite previous efforts, knowledge about variation and evolution of ephedroid pollen traits is poor. Here, we document pollen morphology of nearly all extant species of Ephedra, using a combination of scanning electron microscopy (SEM) and light microscopy (LM), and reconstruct ancestral states of key pollen traits. Our results indicate that the ancestral Ephedra pollen type has numerous plicae interspaced by unbranched pseudosulci, while the derived pollen type has branched pseudosulci and (generally) fewer plicae. The derived type is inferred to have evolved independently twice, once along the North American stem branch and once along the Asian stem branch. Pollen of the ancestral type is common in Mesozoic fossil records, especially from the Early Cretaceous, but it is less commonly reported from the Cenozoic. The earliest documentation of the derived pollen type is from the latest Cretaceous, after which it increases strongly in abundance during the Paleogene. The results of the present study have implications for the age of crown group Ephedra as well as for understanding evolution of pollination syndromes in the genus.

  • 63. Bommarco, Riccardo
    et al.
    Lönn, Mikael
    Södertörns högskola, Institutionen för livsvetenskaper, Miljövetenskap. Södertörns högskola, Institutionen för livsvetenskaper, Biologi.
    Danzer, Ulrika
    Pålsson, Karl-Johan
    Torstensson, Peter
    Genetic and phenotypic differences between thistle populations in response to habitat and weed management practices2010Ingår i: Biological Journal of the Linnean Society, ISSN 0024-4066, E-ISSN 1095-8312, Vol. 99, nr 4, s. 797-807Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Rapid evolutionary change is increasingly being recognized as commonplace, but the evolutionary consequences for species and ecosystems under human-induced selection regimes have not been explored in detail, although many species occur in such environments. In a common garden experiment and with amplified fragment length polymorphism markers, we examined whether genetic differentiation has taken place between spatially intermixed populations of creeping thistles Cirsium arvense (Asteraceae) collected from a natural habitat (maritime shores), a semi-natural habitat (road verges) and arable fields under two management regimes: conventional and organic farming. Populations of C. arvense have altered genetically and locally adapted their growth patterns with changed land use. Although plants from different habitats showed similar total biomass production, shoot and root production was higher for maritime populations, suggesting selection for increased competitive ability. Competitive ability then declined in the order semi-natural, conventional farms and organic farms. Thistles in arable fields may be more selected for tolerance against disturbances from herbicides and mechanical weed control. In addition, early shoot sprouting and genetic analysis showed differentiation between plants originating from conventional farms and farms that were converted to organic 9–30 years ago, suggesting some adaptation to altered crop cultivation practices

  • 64.
    Bonca, Sandra
    et al.
    University of Ljubljana, Ljubljana, Slovenia.
    Udovc, Andrej
    University of Ljubljana, Ljubljana, Slovenia.
    Rodela, Romina
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    A social marketing perspective on road freight transportation of fresh fruits and vegetables: a Slovene case2017Ingår i: Ekonomska Istrazivanja, ISSN 1331-677X, E-ISSN 1848-9664, Vol. 30, nr 1, s. 1132-1151Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    With the large increase in transportation over the last decades and the associated negative impacts upon the environment and society, a more sustainable use of transport is a crucial policy issue. This analysis focuses on road freight transport of selected produce (carrots, cabbage, apples and pears) with the aim to appraise the sustainability of road freight transport of these for the Slovene market. To this end, we take into account self-sufficiency, import and export features, transport needs, produce origin and prices differences between domestic and non-domestic produce. The method used for obtaining transported quantities, exported from and imported to the county, was material flow accounts (MFA). Then we undertook an analysis of sustainability of road transport of produce where we considered the country's transport needs. The study finds that road freight transport for selected produce is not sustainable. Recognising the normative dimensions of sustainability, the role of social marketing in this context is explored and suggestions on how to promote more sustainable transport solutions advanced.

  • 65.
    Bonow, Johan M.
    et al.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Geografi. Geological Survey of Denmark and Greenland (GEUS), Copenhagen, Denmark.
    Japsen, Peter
    Geological Survey of Denmark and Greenland (GEUS), Copenhagen, Denmark.
    Nielsen, Troels F. D.
    Geological Survey of Denmark and Greenland (GEUS), Copenhagen, Denmark.
    High-level landscapes along the margin of southern East Greenland-A record of tectonic uplift and incision after breakup in the NE Atlantic2014Ingår i: Global and Planetary Change, ISSN 0921-8181, E-ISSN 1872-6364, Vol. 116, s. 10-29Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Elevated plateaux and deeply incised valleys characterise the large-scale landscapes along the East Greenland margin as in many elevated, passive continental margins around the world. The absence of syn- or post-rift rocks in, for example, the mountains of Norway, hampers the assessment of the age of these landscapes and of the present-day elevation. The mountains of southern East Greenland (68-71°N), however, expose thick basalts that were extruded onto a largely horizontal lava plain near sea level during breakup of the NE Atlantic at the Paleocene-Eocene transition. We take advantage of these favourable geological conditions to investigate the uplift history after continental breakup. In particular, it is clear that present-day elevations of these basalts up to 3.7. km above sea level (a.s.l.) were reached after breakup. We have mapped regional erosion surfaces and integrated the information about the landscape with the stratigraphic record (i.e. stratigraphic landscape analysis). The analysis led to the following relative denudation chronology for southern East Greenland: At breakup, the margin subsided and underwent km-scale burial. Around the Eocene-Oligocene transition, the first phase of uplift, tilting and subsequent erosion led to the formation of an extensive, low-relief erosion surface (the Upper Planation Surface, UPS) that was graded towards the base level of the adjacent ocean before the eruption of Miocene lavas onto that surface. A second uplift that most likely occurred after the Miocene produced a new erosion surface (the Lower Planation Surface, LPS) by incision below the UPS. Finally, a third event in the late Cenozoic lifted the UPS and the LPS to their present elevations of up to 3 and 2. km. a.s.l., respectively and shaped the present-day valleys and fjords by incision of rivers and glaciers below the LPS. The general picture of landscape development is highly similar to West Greenland and the common characteristics between the stepped landscapes in East Greenland and those on the conjugate margin in Scandinavia lead us to conclude that the mountains of Norway also formed after the North Atlantic breakup.

  • 66.
    Bonow, Madeleine
    Södertörns högskola, Institutionen för livsvetenskaper.
    Det fria stångskiftet i Västergötland2008Ingår i: Jordvärderingssystem från medeltiden till 1600-talet / [ed] Alf Ericsson, Stockholm: Kungl. Vitterhets Historie och Antikvitets Akademien, 2008, s. 203-218Kapitel i bok, del av antologi (Övrigt vetenskapligt)
  • 67.
    Bonow, Madeleine
    Södertörns högskola, Institutionen för livsvetenskaper.
    "…med de skönaste ekelundar": en geografisk resamed Linné till 1700-talets Västergötland2007Ingår i: Geografiska Notiser, ISSN 0016-724X, nr 4, s. 7-15Artikel i tidskrift (Övrigt vetenskapligt)
  • 68.
    Bonow, Madeleine
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Swedish fishing in the wake of ITQ2017Ingår i: Fisheries, Quota, Management and Quota Transfer: Rationalization through Bio-economics / [ed] Gordon M. Winder, Switzerland: Springer, 2017, s. 141-158Kapitel i bok, del av antologi (Refereegranskat)
  • 69. Bonow, Madeleine
    Tibet: en politisk-geografiskskildring av världens tak2008Ingår i: Geografiska Notiser, ISSN 0016-724X, nr 2, s. 91-103Artikel i tidskrift (Övrigt vetenskapligt)
  • 70.
    Bonow, Madeleine A
    Stockholms universitet.
    Gård, gräns, giftermål: Familjestrategiers betydelse för markens och landskapets utformning i Norra Åsarps socken, Västergötland ca 1640-18802005Doktorsavhandling, monografi (Övrigt vetenskapligt)
    Abstract [en]

    This dissertation deals with property rights and the implications of these for people, landscape and settlement in Norra Åsarp Parish in the province of Västergötland.

    The overarching aim of the thesis is to investigate systems of social rules and how these influence the structure of settlement and land use/ownership. The central question concerns how the peasant family reproduced and maintained social and physical boundaries and if there are any relationships between territoriality and social class.

    The analysis has led us to the unexpected result that there was a surprising degree of continuity concerning the individual field strips. This is remarkable since the social system otherwise showed a rather rapid rotation in farm occupancy. The intriguing question here is why it was like this in this area? Why were there no changes in the allotment system?

    To solve this question special attention is given to reproduction and farm practice at the individual level. The social structure was primarily characterised by families who farmed on a small scale. The farms belonging to a larger kinship group circulated between the relatives and were farmed by the most suitable couple available. The marital strategy made group identity well connected and the family identity become strong. The social system was to some extent readable in the landscape: the family tree was more or less written on the ground.

    This investigation may provide an explanation to why there were no changes in the allotment system.

    The basis of the taxation in Norra Åsarp may have been the allotment system itself and this may explain why nothing happens on the ground: land had to stay fixed and tied to specific homesteads, otherwise it would be hard to calculate the rights and duties of the farm.

  • 71.
    Bonow, Madeleine
    et al.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Cios, Stanislaw
    Ministry of Foreign Affairs, Warsaw, Poland.
    Svanberg, Ingvar
    Uppsala universitet.
    Fishponds in teh Baltic States: Historical Cyprinid Culture in Estonia, Latvia and Lithuania2016Ingår i: Historical Aquaculture in Northern Europe / [ed] M. Bonow; H. Olsén; I. Svanberg, Huddinge: Södertörns högskola, 2016, s. 139-156Kapitel i bok, del av antologi (Refereegranskat)
  • 72.
    Bonow, Madeleine
    et al.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Hammer, Monica
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Petersson, Mona
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Hästföretagande i storstadens närhet2017Ingår i: Genus och företagande / [ed] Madeleine Bonow, Paulina Rytkönen, Svenska sällskapet för antropologi och geografi , 2017, s. 159-182Kapitel i bok, del av antologi (Övrigt vetenskapligt)
    Abstract [sv]

    För 150 år sedan bodde större delen av Sveriges befolkning på landsbygden och var sysselsatta i primärnäringarna, men under de senaste 120 åren har den svenska landsbygden genomgått en kraftfull strukturomvandling. idag är det endast 15% av Sveriges befolkning som bor utanför någon av Sveriges tätorter. Det vill säga 85% av befolkningen bor på 1,3 procent av landarealen och ytterst få är sysselsatta i de gröna näringarna. Den pågående omstruktureringen av lantbruket innebär att många av de mindre gårdarna läggs ned och blir fritidshus eller hästgårdar. Samtidigt som nötkreaturen minskar i antal ökar antalet hästar och Sverige har blivit ett av de hästtätaste länderna i Europa.

    Ungefär en halv miljon svenskar rider regelbundet och närmare en tredjedel av alla invånare i Sverige har på något sätt kontakt med hästar och de olika verksamheter som de ger upphov till. Denna ökning av sporthästar är särskilt märkbar i tätortsnära områden. I Stockholm och Uppsala län finns omkring 44 000 hästar och ca 78% av dessa finns i urbana eller tätortsnära områden. Hästarna har till viss del blivit landsbygdens räddning. hästar behöver mat, husrum och livsutrymme, vilket har skapat en välkommen extra inkomstkälla för lantbruket. Det är relativt vanligt att lantbrukare producerar och säljer hästfoder eller hyr ut stallplatser. Enligt lantbrukarnas Riksförbund, är hästnäringen den femte största inkomstkällan för jordbruket.  Hästen är även på andra sätt en viktig resurs i arbetet med att utveckla nya former för jordbruksföretagande och bidra till en levande landsbygd. Det ökande antalet hästar medför mer arbete för veterinärer, hovslagare och tränare/instruktörer. Dessutom växer det fram nya yrkesgrupper med specialinriktning mot hästar. Syftet med den här studien är att belysa kvinnliga hästföretagares syn på tätortsnära hästverksamheter och diskutera svårigheter och möjligheter för utvecklingen av hästnäringen med fokus på Stockholm- och Uppsalaområdet.

  • 73.
    Bonow, Madeleine
    et al.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Normark, Maria
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Medieteknik.
    Community gardening in Stockholm: participation, driving forces and the role of the municipality2018Ingår i: Renewable Agriculture and Food Systems, ISSN 1742-1705, E-ISSN 1742-1713, Vol. 33, nr 6, s. 503-507Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The paper reports on a study of community gardening in Stockholm. We contribute to the body of knowledge about the sustainability of community gardens and this new form of citizen-led initiatives in Stockholm, with the ambition of creating a debate about the best way to sustain and develop these initiatives in Sweden. We argue that although community gardening may provide leverage for means of developing a sustainable city, it is a marginal phenomenon and contributes little to sustainable development its present form. Through interviews we have investigated how the citizens and municipality officers of Stockholm try to adapt to the renewed interest in community gardening by looking at the policy makers’, municipality officers’ and grassroots movements’ incentives to start community gardens. We specifically focus on how the community gardeners articulate their reasons for participating in collaborative initiatives in the city and how these expectations evolve when they are faced with the reality of gardening and the problems relating to producing food in the city. We have found that there are a growing number of citizens and local authorities advocating community gardening, but the sustainability and endurance of gardens are hampered by vague responsibilities, lack of leadership and unclear expectations of the outcome. Community gardening cases in Stockholm contribute to the debate by exemplifying how formal (e.g. policy making) and informal advocacy (e.g. civic engagement in community gardening) groups are collaborating, but also showing that they often have different agendas and initial motivations for setting up new gardens. We argue that uncritical enthusiasm results in an overly instrumental approach to governance of community gardening and that the sustainability and endurance of the community gardening is not an issue that the governing bodies plan for, and hence it is forgotten. We suggest some routes forward, involving employing facilitators from various stakeholders such as the municipality, housing companies and various NGOs.

  • 74.
    Bonow, Madeleine
    et al.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Normark, Maria
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Medieteknik.
    Urban Community Gardens’ Contribution to the New Rurality: An Example from Stockholm (Sweden)2016Ingår i: Challenges for the New Rurality in a Changing World: Proceedings from the 7th International Conference on Localized Agri-Food Systems: 8-10 May 2016, Södertörn University, Stockholm, Sweden / [ed] Paulina Rytkönen & Ursula Hård, Huddinge: Södertörns högskola, 2016, s. 37-38Konferensbidrag (Refereegranskat)
    Abstract [en]

    In the global North, there has been a considerable renewed interest for urban agriculture (UA) as a means to re-localize food systems by shortening food supply chains. This can be done by local food initiatives, such as community gardens. This paper is iscussing community gardens in Stockholm. We have choose to look at community gardens under the lens of neoliberal governmentality. Material has been gathered through participatory attendants on meetings, interviews and surveys. The results show that in Stockholm one can to some extent see urban gardening practices as agents of counter-neoliberal urban transformation. But also as an expression of the new rurality were the citizens desire to shorten the food chain and re connect with their food and to create new food regimes.

  • 75.
    Bonow, Madeleine
    et al.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Olsén, HåkanSödertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Biologi.Svanberg, IngvarUppsala universitet.
    Historical Aquaculture in Northern Europe2016Samlingsverk (redaktörskap) (Refereegranskat)
    Abstract [en]

    How were fishponds introduced, farmed and spread in Scandinavia and the Baltic Region in early modern times? What was their economic, social and religious importance? Which fish species were significant and why?

    This book uncovers a long, now broken, tradition that barely left traces in the written record or physical environment. Its broad and multidisciplinary scope highlights the situation from medieval times until the late nineteenth century. Besides Scandinavia and the Baltic States, insights from England are also introduced.

    Several socio-cultural domains have been identified: late medieval monastic fishponds; late medieval aristocratic fishponds associated with castles and manors; seventeenth and eighteenth century ponds rectory ponds as well as urban ponds from the seventeenth century to the nineteenth century.

  • 76.
    Bonow, Madeleine
    et al.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Svanberg, Ingvar
    Förvarings- och odlingsdammar: Fiskdammar i det senmedeltida och tidigmoderna Västergötland2018Ingår i: Speglingar av vatten / [ed] Anna Lokrantz, Skara: Västergötlands fornminnesförening , 2018, s. 51-59Kapitel i bok, del av antologi (Övrigt vetenskapligt)
  • 77.
    Bonow, Madeleine
    et al.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Svanberg, Ingvar
    Uppsala universitet.
    Historical Pond-Breeding of Cyprinids in Sweden and Finland2016Ingår i: Historical Aquaculture in Northern Europe / [ed] M. Bonow; H. Olsén; I. Svanberg, Huddinge: Södertörns högskola, 2016, s. 89-119Kapitel i bok, del av antologi (Refereegranskat)
  • 78.
    Bonow, Madeleine
    et al.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Svanberg, Ingvar
    Institutionen för rysslandsstudier Uppsala universitet.
    Urban Ponds for Breeding Medicinal Leeches (Hirudo medicinalis Linnaeus, 1758) in Sweden2017Ingår i: Meta H : historiskarkeologisk tidskrift, ISSN 2002-0406, s. 63-72Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Leeches and their medicinal applications are well-studied in history. In Scandinavia the use of medicinal leeches for therapy is mentioned already by Olaus Magnus in his Historia de gentibus septentrionalibus (1555). Carl Linnaeus named the species Hirudo medicinalis. In the 1760s leeches became widely accepted as a medicament and the demand increased, not only in Sweden but all over Europe. By the 1830s around 50 million leeches were employed in hospitals every year causing a shortage of leeches all over Europe. However, the species is rare in Scandinavia. In Sweden medicinal leeches have been harvested in the southern part of the country. The local occurrence did not cover the large demand and imported leeches had to be used. In the nineteenth century, over-exploitation reduced many local populations and breeding medicinal leeches in ponds became a concern for authorities in many countries. Several farms for breeding leeches in ponds were also founded in rural and urban settings. We know very little about them, but toponyms serve to remind us of such ponds. This article aims to shed some light on the forgotten practice of breeding medicinal leeches in urban ponds in Sweden.

  • 79.
    Bonow, Madeleine
    et al.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Svanberg, Ingvar
    Institutionen för rysslandsstudier Uppsala universitet.
    Urbana fiskdammar i 1600 och 1700-talets Sverige: strödda notiser om akvakultur i stadsmiljö2014Ingår i: RIG: Kulturhistorisk tidskrift, ISSN 0035-5267, E-ISSN 2002-3863, Vol. 97, nr 4, s. 215-222Artikel i tidskrift (Refereegranskat)
  • 80. Borggren, Clara
    et al.
    Moberg, Åsa
    Räsänen, Minna
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Medieteknik. KTH.
    Finnveden, Göran
    Business meetings at a distance - decreasing greenhouse gas emissions and cumulative energy demand?2013Ingår i: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 41, s. 126-139Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Transportation, or rather access, is a major challenge in relation to achieving environmental goals and in striving for sustainable development. One potential means suggested to decrease the environmental impact related to accessibility is mediated meetings. However, few studies have quantified the potential environmental impacts with a life cycle perspective. With inspiration from a project involving four major Swedish media companies experiencing an increasing need for business travel and decreasing resources, this study assessed the potential greenhouse gas (GHG) emissions and cumulative energy demand (CED) related to different types of business meetings, using a life cycle perspective. The potential consequences for emissions of GHG and CED in two hypothetical companies introducing mediated meetings were also assessed. The results indicated that mediated meetings using personal computers can reduce GHG emissions and CED per meeting and that more advanced mediated solutions are preferable to meetings which require travel, if the equipment is frequently used to replace travel. However, advanced technology that is under-used may give similar or higher GHG emissions and CED than meetings traveled to by train. All mediated meeting alternatives studied here had lower GHG emissions and CED than meetings which required travel by plane or car. LCD screen manufacture contributed the main environmental impact of mediated meetings, but the meeting rooms needed, electricity use for equipment and internet use for data transmission were also important in some cases. As LCD screen manufacture and internet energy use were main issues and as the data on these issues are uncertain, they should be further assessed+ and updated in future studies. Introduction of mediated meetings in companies and organizations should involve a thorough consideration of needs and possible solutions to achieve the best possible environmental benefits through efficient use and replacement of travel. (c) 2012 Elsevier Ltd. All rights reserved.

  • 81.
    Borglund, Hanna
    Södertörns högskola, Institutionen för livsvetenskaper.
    Governing the commons: A case-study of Rio Limpio National Park, Dominican Republic2011Självständigt arbete på avancerad nivå (magisterexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [en]

    Due to scarce natural resources and problems of governing the commons, alternative management of the commons has again emerged. The earlier known governing methods used by international and state conservation are state or private ownership. Governing the commons with local institutions was brought to attention in 2009 by Elinor Ostrom.

    In this case-study of governing the commons, a national park is the objective. There are many stakeholders, with a focus on the community institution. The co-management of governing the national park between the local institution, the state and the NGO is analysed to find out if sustainable governance can be achieved in Rio Limpio National Park, and if so how? The rules are set on the conditions of the state about the regulations of the national park, although its protection is legitimized by the activities of the local institution.

    The regulation that prohibits the use of the natural resources within the park is enforced in a situation -where poor people are directly dependant on the natural resources and have few employment alternatives. This creates conflicts between the state, the NGO and the community of the environmental policies. The study has shown that increased benefits of the community, as with social protection and local participation in decision making, will lead to more successful nature resource management as well as sustainable development.

  • 82.
    Bosma, R. H.
    et al.
    Wageningen University & Research, Wageningen, Netherlands.
    Ha, T. T. P.
    Can Tho University, Can Tho, Vietnam.
    Hiep, T. Q.
    Can Tho University, Can Tho, Vietnam.
    Phuong, N. T. H.
    Can Tho University, Can Tho, Vietnam.
    Ligtenberg, A.
    Wageningen University & Research, Wageningen, Netherlands.
    Rodela, Romina
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Bregt, A. K.
    Wageningen University & Research, Wageningen, Netherlands.
    Changing opinion, knowledge, skill and behaviour of Vietnamese shrimp farmers by using serious board games2019Ingår i: The Journal of Agricultural Education and Extension, ISSN 1389-224X, E-ISSN 1750-8622Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Purpose: Mekong Delta's shrimp farming contributes to socio-economic development but tends to reduce the mangrove area. On the one hand, NGOs advocate balancing ecology and economy, while on the other hand, the Vietnamese government supports intensifying shrimp production. The latter strategy increases shrimp diseases and marginalises smallholders. To influence the opinions, knowledge and behaviour of shrimp farmers, we developed and tested a serious board game. Approach: Through several iterations, we designed a realistic board game mimicking local shrimp farming. Then, after conducting three sessions of gameplay with farmers in three sites, we assessed how this gameplay influenced players. We used a semi-experimental set-up by collecting data on the day of the gameplay, and on two further time-points. Findings: After the gameplays, farmers reported to have learned about the risks of monoculture-intensive-shrimp system and the advantages of hybrid systems. Likert ratings showed that players adopted innovations faster and, in case of shrimp diseases, consulted commercial service-providers less, but with other farmers more. They confirmed to have learned that the best strategy for them would be to adopt hybrid systems, i.e. intensify part of the area of mixed-mangrove or improved-extensive shrimp farms. Theoretical implications: Realistic board games can create opportunities for social learning and training of groups which are not always easy to reach. Practical implications: Board games can support transfer of knowledge and skills to farmers, and can develop their critical thinking. Creation: The findings that board games are effective in the context of a top-down extension systems offer value opportunities.

  • 83.
    Boström, Magnus
    Södertörns högskola, Institutionen för livsvetenskaper, Miljövetenskap.
    A Missing Pillar? Challenges in theorizing and practicing social sustainability: introductory article in the special issue2012Ingår i: Sustainability: Science, Practice, & Policy, ISSN 1548-7733, E-ISSN 1548-7733, Vol. 8, nr 1, s. 3-14Artikel i tidskrift (Refereegranskat)
  • 84.
    Boström, Magnus
    et al.
    Södertörns högskola, Institutionen för livsvetenskaper, Miljövetenskap.
    Börjeson, Natasja
    Södertörns högskola, Institutionen för livsvetenskaper, Miljövetenskap.
    Gilek, Michael
    Södertörns högskola, Institutionen för livsvetenskaper, Miljövetenskap.
    Jönsson, Anna Maria
    Södertörns högskola, Institutionen för kultur och kommunikation, Medie- och kommunikationsvetenskap.
    Karlsson, Mikael
    Södertörns högskola, Institutionen för livsvetenskaper, Miljövetenskap.
    Responsible procurement and complex product chains: the case of chemical risks in textiles2012Ingår i: Journal of Environmental Planning and Management, ISSN 0964-0568, E-ISSN 1360-0559, Vol. 55, nr 1, s. 95-111Artikel i tidskrift (Refereegranskat)
  • 85.
    Boström, Magnus
    et al.
    Södertörns högskola, Institutionen för livsvetenskaper, Miljövetenskap.
    Börjeson, Natasja
    Södertörns högskola, Institutionen för livsvetenskaper, Miljövetenskap.
    Gilek, Michael
    Södertörns högskola, Institutionen för livsvetenskaper, Miljövetenskap.
    Jönsson, Anna Maria
    Södertörns högskola, Institutionen för kultur och kommunikation, Medie- och kommunikationsvetenskap.
    Karlsson, Mikael
    Södertörns högskola, Institutionen för livsvetenskaper, Miljövetenskap.
    Towards responsible procurement in relation to chemical risks in textiles?: Findings from an interview study2011Rapport (Övrigt vetenskapligt)
    Abstract [en]

    In the present study, we ask whether and how different organizations work with sustainable procurement and how this work relates to the complexity of the product chain. We have chosen to focus on chemical risks in relation to textiles – an issue that increasingly is becoming part of the public discourse and a target for journalists. In the case of textiles, the product chain from raw material to consumption often involves a great number of production steps, sub-contractors and users, often on a global scale. Sustainable management of the supply chain would improve health, quality of life, and labour conditions, for instance in the areas and factories in developing countries where production and processing often take place. However, such management faces great difficulties and challenges in terms of capabilities, knowledge, communication, and policy instruments. These difficulties are related to high uncertainties and other problems that in turn are related to the high complexity of global product chains. The objective of the present report is to gain insights into the opportunities and challenges that private and public organizations face regarding the development of responsible procurement in relation to a complex and uncertain issue. The report focuses on chemicals in textiles and uses a qualitative methodology with semi-structured interviews. Key elements of a pro-active, responsible procurement strategy are defined in the report and include criteria such as using a preventive, systematic, responsive, integrative, and reflective approach. The analysis includes the following topics: (i) priorities and knowledge, (ii) communicative strategies, (iii) policy instruments, (iv) monitoring and trust in relation to suppliers. The results show a fairly modest level of organizational responsibility, although it is possible to observe an initial positive development among the cases investigated. The report ends by suggesting a number of topics that require further investigation.

  • 86.
    Boström, Magnus
    et al.
    Örebro University.
    Casual Vifell, Åsa
    Södertörns högskola, Institutionen för samhällsvetenskaper, Statsvetenskap.
    Klintman, M.
    Lund University.
    Soneryd, L.
    University of Gothenburg.
    Hallström, K. T.
    Stockholm School of Economics.
    Thedvall, R.
    Social sustainability requires social sustainability procedural prerequisites for reaching substantive goals2015Ingår i: Nature and Culture, ISSN 1558-6073, E-ISSN 1558-5468, Vol. 10, nr 2, s. 131-156Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The synergies and trade-offs between the various dimensions of sustainable development are attracting a rising scholarly attention. Departing from the scholarly debate, this article focuses on internal relationships within social sustainability. Our key claim is that it is diffi cult to strengthen substantive social sustainability goals unless there are key elements of social sustainability contained in the very procedures intended to work toward sustainability. Our analysis, informed by an organizing perspective, is based on a set of case studies on multi-stakeholder transnational sustainability projects (sustainability standards). This article explores six challenges related to the achievement of such procedures that can facilitate substantive social sustainability. Three of these concern the formulation of standards and policies, and three the implementation of standards and policies. To achieve substantive social sustainability procedures must be set in motion with abilities to take hold of people's concerns, frames, resources, as well as existing relevant institutions and infrastructures. © Berghahn Journals.

  • 87.
    Boström, Magnus
    et al.
    Örebro University.
    Gilek, Michael
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Hedenström, Eva
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik.
    Jönsson, Anna Maria
    Södertörns högskola, Institutionen för kultur och lärande, Medie- och kommunikationsvetenskap.
    How to achieve sustainable procurement for “peripheral” products with significant environmental impacts2015Ingår i: Sustainability: Science, Practice, & Policy, ISSN 1548-7733, E-ISSN 1548-7733, Vol. 11, nr 1, s. 21-31Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Departing from previous theoretical and empirical studies on sustainable supply-chain management, we investigate organizational commitment (drivers and motivations) and capabilities (resources, structures, and policy instruments) in sustainable procurement of “noncore” products. By focusing on chemicals in textiles, the article explores the activi-ties of differently sized organizations and discusses the potentials and limitations of sustainable procurement measures. The study is based on a qualitative and comparative approach, with empirical findings from 26 case stud-ies of Swedish public and private procurement organizations. These organizations operate in the sectors of hotels/ conference venues, transport, cinema, interior design, and hospitals/daycare. While this work demonstrates major challenges for buyers to take into account peripheral items in sustainable procurement, it also identifies constructive measures for moving forward. A general sustainability/environmental focus can, as an effect, spill over to areas per-ceived as peripheral. © 2014 Boström et al.

  • 88.
    Boström, Magnus
    et al.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap. Örebro universitet.
    Gilek, Michael
    Södertörns högskola, Centrum för Östersjö- och Östeuropaforskning (CBEES).
    Jönsson, Anna Maria
    Södertörns högskola, Institutionen för kultur och lärande, Medie- och kommunikationsvetenskap.
    Karlsson, Mikael
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    IKEA and the Responsible Governance of Supply Chains: IKEA’s work on chemicals in textiles2013Rapport (Övrigt vetenskapligt)
    Abstract [en]

    This report focuses on IKEA’s management and communication surrounding sustainability in general and chemical risks specifically. IKEA’s work is analysed in relation to theoretical concepts around responsibility, supply chain, and governance . The report focuses on IKEA’s visions and organizational structures, its policy instruments to deal with chemical risks, supplier-relations and communication and learning. The study is based on previous scholarly literature, analyses of relevant documents, a field visit at a few of IKEA’s suppliers in southern India, as well as interviews with staff working at IKEA in Sweden. The report focuses on IKEA’s systems and processes for dealing with chemical risks, and not on the implementation of such measures in quantitative terms.

  • 89.
    Boström, Magnus
    et al.
    Örebro University.
    Jönsson, Anna Maria
    Södertörns högskola, Institutionen för kultur och lärande, Medie- och kommunikationsvetenskap.
    Lockie, S.
    James Cook University, Australia.
    Mol, A. P. J.
    Wageningen University, Wageningen, The Netherlands.
    Oosterveer, P.
    Wageningen University, Wageningen, The Netherlands.
    Sustainable and responsible supply chain governance: Challenges and opportunities2015Ingår i: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 107, s. 1-7Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    This paper introduces the Special Volume on sustainable and responsible supply chain governance. As globalized supply chains cross multiple regulatory borders, the firms involved in these chains come under increasing pressure from consumers, NGOs and governments to accept responsibility for social and environmental matters beyond their immediate organizational boundaries. Governance arrangements for global supply chains are therefore increasingly faced with sustainability requirements of production and consumption. Our primary objectives for this introductory paper are to explore the governance challenges that globalized supply chains and networks face in becoming sustainable and responsible, and thence to identify opportunities for promoting sustainable and responsible governance. In doing so, we draw on 16 articles published in this Special Volume of the Journal of Cleaner Production as well as upon the broader sustainable supply chain governance literature. We argue that the border-crossing nature of global supply chains comes with six major challenges (or gaps) in sustainability governance and that firms and others attempt to address these using a range of tools including eco-labels, codes of conduct, auditing procedures, product information systems, procurement guidelines, and eco-branding. However, these tools are not sufficient, by themselves, to bridge the geographical, informational, communication, compliance, power and legitimacy gaps that challenge sustainable global chains. What else is required? The articles in this Special Volume suggest that coalition and institution building on a broader scale is essential through, for example, the development of inclusive multi-stakeholder coalitions; flexibility to adapt global governance arrangements to local social and ecological contexts of production and consumption; supplementing effective monitoring and enforcement mechanisms with education and other programs to build compliance capacity; and integration of reflexive learning to improve governance arrangements over time. © 2015 Elsevier Ltd.

  • 90.
    Boström, Magnus
    et al.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Rabe, Linn
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Rodela, Romina
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Environmental Non-Governmental Organizations and Transnational Collaboration in Two Regional Contexts: The Baltic Sea and Adriatic Sea Region2013Konferensbidrag (Refereegranskat)
  • 91.
    Bradshaw, Clare
    et al.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik. Stockholm University.
    Näslund, J.
    AquaBiota Water Research, Stockholm.
    Hansen, J.
    AquaBiota Water Research, Stockholm / Stockholm University.
    Kozlowsky-Suzuki, B.
    Universidade Federal Do Estado Do Rio de Janeiro, Brazil.
    Sundström, B.
    Gustafsson, Kerstin
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik.
    Hexabromocyclododecane affects benthic-pelagic coupling in an experimental ecosystem2015Ingår i: Environmental Pollution, ISSN 0269-7491, E-ISSN 1873-6424, Vol. 206, s. 306-314Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Hexabromocyclododecane (HBCDD) is an additive brominated flame retardant and a recognized PBT chemical. However, little is known about its effects on coastal species, and even less on ecosystem effects. We investigated the dose-response effects of HBCDD over 8 months in 1000 L experimental mesocosms assembled from coastal Baltic Sea ecosystem components. HBCDD was added via spiked plankton material and a range of structural and functional endpoints were measured during the experiment. Increasing HBCDD concentration decreased the biomass of large Macoma balthica, resulting in a decreased recirculation of nutrients to the water. Changes in plankton communities were also observed, either due to direct toxic HBCDD effects or indirect via changes in benthic-pelagic coupling of nutrients. Such complex ecosystem responses can only be quantified and understood by using realistic experimental set-ups, and including knowledge of system-specific ecological interactions. This is the first study of HBCDD effects on ecosystem level.

  • 92.
    Bradshaw, Clare
    et al.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik. Stockholm University.
    Strid, Anna
    Stockholm University.
    von Stedingk, Hans
    Stockholm University.
    Gustafsson, Kerstin
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik.
    Effects of benthos, temperature and dose on the fate of HBCDD in experimental coastal ecosystems2015Ingår i: Environmental Toxicology and Chemistry, ISSN 0730-7268, E-ISSN 1552-8618, Vol. 34, nr 6, s. 1246-1257Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    We studied the fate of the brominated flame retardant hexabromocyclododecane (HBCDD) added in a particulate suspension to experimental ecosystems assembled from brackish (Baltic Sea) coastal bays. Two experiments examined how A) benthic macrofauna (over 21 d), and B) increased temperature (14 d), affected HBCDD concentrations and fractionation of α, β and γ diastereomers in the water, sediment and biota. A third experiment (C) run over three seasons (231 d), studied the effect of HBCDD dose on the same endpoints. In all treatments of the three experiments, HBCDD partitioned mainly to the sediment, and this proportion increased with time. Presence of macrofauna tended to increase the HBCDD concentration in the sediment and decreased its concentration in the water. Increased temperature (+5 °C) decreased the amount of HBCDD in sediment and water but not in the filter- and deposit-feeding infaunal bivalves (Macoma balthica). The partitioning between water, sediment and biota was not concentration dependent. In all treatments, sediment became enriched in γ-HBCDD, M. balthica in α-HBCDD and water in α- and β-HBCDD. Bioaccumulation of HBCDD in M. balthica was high in all experiments (logBSAF > 1.25), the α diastereomer contributing the most (logBSAF 2.1 to 5.2). There is a risk of trophic transfer of HBCDD from benthic to pelagic food webs, and secondary poisoning of marine consumers. This article is protected by copyright. All rights reserved.

  • 93.
    Breivik, Moa
    Södertörns högskola, Institutionen för livsvetenskaper, Miljövetenskap.
    En utvärdering av Länsstyrelsen i Jämtlands läns uppföljning av den hotade orkidén brunkulla2012Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Det har skett en stor förändring inom det svenska jordbruket det senaste seklet, traditionell slåtter och beteshävd har nästan upphört helt. Förändrad markanvändning orsakar habitatförlust för många växter och djur. Slåtter och betesmarkerna som hör till de artrikaste växtsamhällena i Sverige hotas av igenväxning. I denna uppsats studerar jag Länsstyrelsen i Jämtlands läns uppföljning av den starkt hotade orkidén brunkulla (Gymnadenia nigra) som är en hävdgynnad art på tillbakagång. Studien baseras på intervjuer med anställda på Länsstyrelsen i Jämtlands län samt de inventeringsdata man samlat inom uppföljningen. Jag har utvärderat om resultaten från Länsstyrelsens uppföljning uppfyller det syfte som inventeringarna ursprungligen hade. Jag har studerat inventeringsdata och analyserat metodiken i relation till vetenskapliga rekommendationer samt genomfört statistiska tester. Jag har funnit att nuvarande uppföljning har brustit i genomförandet samt i anpassningen av inventeringsmetodiken mot inventeringarnas syfte. I kombination med den hitintills korta mätperioden har detta resulterat i att ingen populationstrend kunnat utläsas och att effekter av hävd och andra miljövariabler inte kan utvärderas på ett tillfredställande sätt.

  • 94.
    Brockington, Dan
    et al.
    University of Sheffield, Sheffield, England.
    Howland, Olivia
    University of Sheffield, Sheffield, England.
    Loiske, Vesa-Matti
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Mnzava, Moses
    University of Dar es Salaam, Dar Es Salaam, Tanzania.
    Noe, Christine
    University of Dar es Salaam, Dar Es Salaam, Tanzania.
    Economic growth, rural assets and prosperity: exploring the implications of a 20-year record of asset growth in Tanzania2018Ingår i: Journal of Modern African Studies, ISSN 0022-278X, E-ISSN 1469-7777, Vol. 56, nr 2, s. 217-243Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Measures of poverty based on consumption suggest that recent economic growth in many African countries has not been inclusive, particularly in rural areas. We argue that measures of poverty using assets may provide a different picture. We present data based on recent re-surveys of Tanzanian households first visited in the early 1990s. These demonstrate a marked increase in prosperity from high levels of poverty. It does not, however, follow that these improvements derive from GDP growth. We consider the implications of this research for further explorations of the relationship between economic growth and agricultural policy in rural areas.

  • 95.
    Broman, E.
    et al.
    Stockholm University.
    Motwani, Nisha H.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Bonaglia, S.
    Stockholm University / University of Southern Denmark, Odense, Denmark.
    Landberg, T.
    Stockholm University.
    Nascimento, F. J. A.
    Stockholm University.
    Sjöling, Sara
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Denitrification responses to increasing cadmium exposure in Baltic Sea sediments2019Ingår i: Aquatic Toxicology, ISSN 0166-445X, E-ISSN 1879-1514, Vol. 217, artikel-id 105328Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Benthic ecosystems have come under intense pressure, due to eutrophication-driven oxygen decline and industrial metal contamination. One of the most toxic metals is Cadmium (Cd), which is lethal to many aquatic organisms already at low concentrations. Denitrification by facultative anaerobic microorganisms is an essential process to transform, but also to remove, excess nitrate in eutrophied systems. Cd has been shown to decrease denitrification and sequester free sulfide, which is available when oxygen is scarce and generally inhibits complete denitrification (i.e. N2O to N2). In polluted sediments, an interaction between oxygen and Cd may influence denitrification and this relationship has not been studied. For example, in the Baltic Sea some sediments are double exposed to both Cd and hypoxia. In this study, we examined how the double exposure of Cd and fluctuations in oxygen affects denitrification in Baltic Sea sediment. Results show that oxygen largely regulated N2O and N2 production after 21 days of exposure to Cd (ranging from 0 to 500 μg/L, 5 different treatments, measured by the isotope pairing technique (IPT)). In the high Cd treatment (500 μg/L) the variation in N2 production increased compared to the other treatments. Increases in N2 production are suggested to be an effect of 1) enhanced nitrification that increases NO3 − availability thus stimulating denitrification, and 2) Cd successfully sequestrating sulfide (yielding CdS), which allows for full denitrification to N2. The in situ field sediment contained initially high Cd concentrations in the pore water (∼10 μg/L) and microbial communities might already have been adapted to metal stress, making the effect of low Cd levels negligible. Here we show that high levels of cadmium pollution might increase N2 production and influence nitrogen cycling in marine sediments. © 2019 The Authors

  • 96.
    Broman, Elias
    et al.
    Stockholm University.
    Raymond, Caroline
    Stockholm University.
    Sommer, Christian
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap. Södertörns högskola, Centrum för Östersjö- och Östeuropaforskning (CBEES), Baltic & East European Graduate School (BEEGS).
    Gunnarsson, Jonas S
    Stockholm University.
    Creer, Simon
    Bangor University, Bangor, UK.
    Nascimento, Francisco J A
    Stockholm University.
    Salinity drives meiofaunal community structure dynamics across the Baltic ecosystem2019Ingår i: Molecular Ecology, ISSN 0962-1083, E-ISSN 1365-294X, Vol. 28, nr 16, s. 3813-3829Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Coastal benthic biodiversity is under increased pressure from climate change, eutrophication, hypoxia, and changes in salinity due to increase in river runoff. The Baltic Sea is a large brackish system characterized by steep environmental gradients that experiences all of the mentioned stressors. As such it provides an ideal model system for studying the impact of on-going and future climate change on biodiversity and function of benthic ecosystems. Meiofauna (animals < 1 mm) are abundant in sediment and are still largely unexplored even though they are known to regulate organic matter degradation and nutrient cycling. In this study, benthic meiofaunal community structure was analysed along a salinity gradient in the Baltic Sea proper using high-throughput sequencing. Our results demonstrate that areas with higher salinity have a higher biodiversity, and salinity is likely the main driver influencing meiofauna diversity and community composition. Furthermore, in the more diverse and saline environments a larger amount of nematode genera classified as predators prevailed, and meiofauna-macrofauna associations were more prominent. These findings show that in the Baltic Sea, a decrease in salinity resulting from accelerated climate change will likely lead to decreased benthic biodiversity, and cause profound changes in benthic communities, with potential consequences for ecosystem stability, functions and services.

  • 97.
    Brändström, Linda-Marie
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Implementeringsprocessen för en hållbar livsmedelsförsörjning: - En kvalitativ studie av Jönköpings och Örebro läns regionala livsmedelsstrategier2018Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Sveriges regering framtog år 2017 en nationell livsmedelsstrategi “Sverige - Fler jobb och en hållbar tillväxt i hela landet” som ska bidra till en långsiktig hållbar och konkurrenskraftig livsmedelskedja. Denna strategi ska användas som en plattform för vilken politik som utformas för livsmedelsindustrin fram till år 2030. Regeringen betonar att livsmedelsstrategin är kräver engagemang och samverkan mellan aktörer på lokal, regional och nationell nivå för att strategin ska möjliggöras. Globalt står vi inför flera utmaningar som bland annat att förse en ökande befolkningsmängd med livsmedel och stora klimatförändringar. Detta bidrar till att agera mer skyndsamt inom statliga gränser. Svårigheter att implementera politiska strategier har visats i studier genom att strategierna oftast är isolerat framtagna på olika politiska nivåer med varierade ambitioner. Denna studie undersöker regionala livsmedelsstrategier framtagna av Jönköpings läns och Örebro län genom en policyanalys. Syftet är att undersöka vilka implementeringsarenor och mekanismer som framträder genom att använda en teoretisk lins. Resultatet visar att implementeringen av policyn i detta fall främst kan kopplas till en toppstyrd arena. Utgången för strategin är beroende av på vilket sätt processmekanismerna utspelas. Tydlighet i det politiska beslutet, gemensam målsättning och samverkan mellan aktörer är bidragande för en lyckad implementering av livsmedelsstrategin.

  • 98.
    Burfoot, Christopher
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Tourism as a tool for communicating complex environmental issues: Applying the ecosystem services framework to nature-based tourism activities across Iceland2017Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    Throughout the twenty-first century, the lowering cost and increased availability of travel options has resulted in virtually uninterrupted economic growth of the international tourism sector. While financially beneficial, the increased movement of people has also been shown to have a negative impact on the environment, leading to the growth of a more environmentally-friendly approach to travel called nature-based tourism. One country at the forefront of the nature-based tourism movement is Iceland, and while the sector has grown significantly in the country over the past decade, the way in which information concerning environmental issues is communicated to tourists has not been widely researched. Being the case, the aim of this study was to examine the extent to which environmental issues are communicated to the general public through the use of the ecosystem services framework. Four popular nature-based tourism activities were selected for analysis; a whale watching tour, a horse riding tour, a boat tour of a glacial lagoon and a spa experience in a geothermal hot spring. A literature review concerning how the ecosystem services framework related to each of these tours was carried out and findings were compared to observatory data gathered through participation in said tourism activities. Results showed that while scientific publications could be found for each tour/ecosystem service combination, information concerning environmental issues was not widely communicated to participants in the nature-based tourism activities using the ecosystem services framework.

  • 99.
    Bärgård, Jennifer
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Vi-skogens kommunikation om sin verksamhet till intressenter: - Retoriskanalys av bild och text2016Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    SAMMANFATTNING

    Vi-skogens kommunikation har studerats för att kunna se på hur de använder sig av kommunikation som verktyg för att locka givare. Förhoppningen är att kunna bidra med att öppna upp betydelsen av bild och text i sitt sammanhang vid kommunikation. Det handlar om vad avsändaren (biståndsorganisationen) skickar ut för att nå ut till potentiella givare. Det undersöks hur organisationen kommunicerar ut de problem som de vill lösa, vilken metod de vill lösa den med och varför just deras organisation ska vara det självklara alternativet innan intresset är borta hos mottagaren. Detta studeras med hjälp av att undersöka den tillförlitlighet (ethos), den känslomässig koppling (pathos) och den saklig övertygelse (logos) i Vi-skogens kommunikation.

    Studien studerat Vi-skogens kommunikation genom bild och text. Författaren hoppas bidra med att undersöka vad en biståndsorganisation, som Vi-skogen, väljer att belysa och fokusera på när de själva får berätta om sin organisation och sitt arbete. Organisationen har analyserats utifrån de retoriska grunderna för att gå vidare för att se vilket ramverk de skapar sin kommunikation.

  • 100.
    Båverman, Evelina
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik.
    Effekter av habitatstorlek, konnektivitet och områdesskydd på förekomst av revlummer Lycopodium annotinum och mattlummer Lycopodium clavatum i Södermanland2015Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Studien syftar till att testa teorier om effekter av habitatstorlek, konnektivitet, områdesskydd, habitatmängd och fragmentering på enskilda arters förekomstmönster, samt undersöka existensen av fragmenteringströskel och utdöendetröskel. Förekomstdata för revlummer Lycopodium annotinum och mattlummer Lycopodium clavatum har insamlats i 61 skogsfragment utspridda i 10 kartrutor à 2,5×2,5 km i landskapet Södermanland. I vardera skogsfragment undersöktes en yta om 500m2. Revlummer förekom i 13 och mattlummer i 10 av de undersökta skogsfragmenten. I 7 kartrutor förekom revlummer i minst 1 skogsfragment, för mattlummer var motsvarande siffra 8 kartrutor. Resultaten visar att habitatstorlek har en signifikant positiv effekt på förekomst av revlummer och mattlummer samt att konnektivitet har en signifikant positiv effekt på förekomst av mattlummer. Områdesskydd, habitatmängd och fragmentering i landskapet har ingen påvisad effekt på förekomst av dessa arter och ingen fragmenteringströskel eller utdöendetröskel har hittats. Dessa resultat indikerar att ett bevarande av skogsfragment med stor storlek och hög konnektivitet är viktigt för de undersökta arternas fortsatta livskraft.  

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