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Dahl, M., Gullström, M., Bernabeu, I., Serrano, O., Leiva-Dueñas, C., Linderholm, H. W., . . . Mateo, M. A. (2024). A 2,000-Year Record of Eelgrass (Zostera marina L.): Colonization Shows Substantial Gains in Blue Carbon Storage and Nutrient Retention. Global Biogeochemical Cycles, 38(3), Article ID e2023GB008039.
Åpne denne publikasjonen i ny fane eller vindu >>A 2,000-Year Record of Eelgrass (Zostera marina L.): Colonization Shows Substantial Gains in Blue Carbon Storage and Nutrient Retention
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2024 (engelsk)Inngår i: Global Biogeochemical Cycles, ISSN 0886-6236, E-ISSN 1944-9224, Vol. 38, nr 3, artikkel-id e2023GB008039Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Assessing historical environmental conditions linked to habitat colonization is important for understanding long-term resilience and improving conservation and restoration efforts. Such information is lacking for the seagrass Zostera marina, an important foundation species across cold-temperate coastal areas of the Northern Hemisphere. Here, we reconstructed environmental conditions during the last 14,000 years from sediment cores in two eelgrass (Z. marina) meadows along the Swedish west coast, with the main aims to identify the time frame of seagrass colonization and describe subsequent biogeochemical changes following establishment. Based on vegetation proxies (lipid biomarkers), eelgrass colonization occurred about 2,000 years ago after geomorphological changes that resulted in a shallow, sheltered environment favoring seagrass growth. Seagrass establishment led to up to 20- and 24-fold increases in sedimentary carbon and nitrogen accumulation rates, respectively. This demonstrates the capacity of seagrasses as efficient ecosystem engineers and their role in global change mitigation and adaptation through CO2 removal, and nutrient and sediment retention. By combining regional climate projections and landscape models, we assessed potential climate change effects on seagrass growth, productivity and distribution until 2100. These predictions showed that seagrass meadows are mostly at risk from increased sedimentation and hydrodynamic changes, while the impact from sea level rise alone might be of less importance in the studied area. This study showcases the positive feedback between seagrass colonization and environmental conditions, which holds promise for successful conservation and restoration efforts aimed at supporting climate change mitigation and adaptation, and the provision of several other crucial ecosystem services. © 2024. The Authors.

sted, utgiver, år, opplag, sider
John Wiley & Sons, 2024
Emneord
climate change, environmental change, millennial scale, nature-based solution, paleoreconstruction, seagrass, environmental conditions, global change, regional climate, sea level change, sedimentation
HSV kategori
Forskningsprogram
Miljövetenskapliga studier
Identifikatorer
urn:nbn:se:sh:diva-53746 (URN)10.1029/2023GB008039 (DOI)001181933100001 ()2-s2.0-85187910776 (Scopus ID)
Tilgjengelig fra: 2024-03-28 Laget: 2024-03-28 Sist oppdatert: 2024-04-02bibliografisk kontrollert
Perry, D., Tamarit, E., Sundell, E., Axelsson, M., Bergman, S., Gräns, A., . . . Wennhage, H. (2024). Physiological responses of Atlantic cod to climate change indicate that coastal ecotypes may be better adapted to tolerate ocean stressors. Scientific Reports, 14(1), Article ID 12896.
Åpne denne publikasjonen i ny fane eller vindu >>Physiological responses of Atlantic cod to climate change indicate that coastal ecotypes may be better adapted to tolerate ocean stressors
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2024 (engelsk)Inngår i: Scientific Reports, E-ISSN 2045-2322, Vol. 14, nr 1, artikkel-id 12896Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Healthy ecosystems and species have some degree of resilience to changing conditions, however as the frequency and severity of environmental changes increase, resilience may be diminished or lost. In Sweden, one example of a species with reduced resilience is the Atlantic cod (Gadus morhua). This species has been subjected to overfishing, and with additional pressures such as habitat degradation and changing environmental conditions there has been little to no recovery, despite more than a decade of management actions. Given the historical ecological, economical, and cultural significance of cod, it is important to understand how Atlantic cod respond to global climate change to recover and sustainably manage this species in the future. A multi-stressor experiment was conducted to evaluate physiological responses of juvenile cod exposed to warming, ocean acidification, and freshening, changes expected to occur in their nursery habitat. The response to single drivers showed variable effects related to fish biometrics and increased levels of oxidative stress dependent parameters. Importantly, two separate responses were seen within a single treatment for the multi-stressor and freshening groups. These within-treatment differences were correlated to genotype, with the offshore ecotype having a heightened stress response compared to the coastal ecotype, which may be better adapted to tolerate future changes. These results demonstrate that, while Atlantic cod have some tolerance for future changes, ecotypes respond differently, and cumulative effects of multiple stressors may lead to deleterious effects for this important species.

sted, utgiver, år, opplag, sider
Springer Nature, 2024
HSV kategori
Identifikatorer
urn:nbn:se:sh:diva-54203 (URN)10.1038/s41598-024-62700-0 (DOI)38839894 (PubMedID)
Prosjekter
Sensitivity of Swedish fish populations to global climate change stressors
Forskningsfinansiär
Swedish Environmental Protection Agency, NV-802-0100-19
Tilgjengelig fra: 2024-06-12 Laget: 2024-06-12 Sist oppdatert: 2024-06-12bibliografisk kontrollert
Ngisiange, N., Tarimo, B., Daudi, L., Mwangi, S., Malesa, F., George, R., . . . Winder, M. (2024). Seasonal fish larvae abundance and composition in seagrass habitats of coastal East Africa. Scientific Reports, 14(1), 11203, Article ID 11203.
Åpne denne publikasjonen i ny fane eller vindu >>Seasonal fish larvae abundance and composition in seagrass habitats of coastal East Africa
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2024 (engelsk)Inngår i: Scientific Reports, E-ISSN 2045-2322, Vol. 14, nr 1, s. 11203-, artikkel-id 11203Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Seagrass habitats play a major role in fisheries productivity through nursery functions and feeding grounds for diverse fish species. However, little is known about the seasonal distribution of fish larvae at large spatial scales in coastal East Africa. We investigated drivers of the seasonal fish larvae abundance and composition in seagrass habitats in Kenya and Tanzania. We found a high diversity of fish larvae (54 families) inhabiting seagrass habitats that differed between sites and seasons. Fish larvae abundance were highest in Kenya, particularly during the northeast monsoon season. Overall, total larval abundances per site were low, reaching less than 190 individuals/100 m3 in Kenya and less than 40 individuals/100 m3 in Tanzania, likely related to the low productivity and strong hydrodynamic processes in this region. Our data suggests that most of the fish spawn year-round in these tropical waters as we did not find strong seasonal patterns. All sites had a high relative abundance of larvae from demersal spawning fishes, indicating that many fish species move to coastal sites for spawning. Primary productivity and dissolved oxygen, driven by hydrodynamics conditions are positively related to fish larvae productivity both in Kenya and Tanzania. These findings indicate that the occurrence of both resident and transient fish larvae in seagrass meadows is driven by strong hydrodynamic and tidal processes that transport fish larvae across adjacent habitats.

sted, utgiver, år, opplag, sider
Springer Nature, 2024
Emneord
Abundance, Coastal East Africa, Community composition, Fish larvae, Seagrass habitat, Seasonality
HSV kategori
Forskningsprogram
Miljövetenskapliga studier
Identifikatorer
urn:nbn:se:sh:diva-54040 (URN)10.1038/s41598-024-62012-3 (DOI)38755235 (PubMedID)2-s2.0-85193514000 (Scopus ID)
Merknad

The research was funded through the WIOMSA MASMA grant (Grant Number: MASMA/OP/2018/01).

Tilgjengelig fra: 2024-05-24 Laget: 2024-05-24 Sist oppdatert: 2024-05-30bibliografisk kontrollert
Ismail, R. O., Asplund, M. E., Gullström, M., George, R., Dahl, M., Buriyo, A. S., . . . Björk, M. (2023). Effects of calcification on air-water CO2 fluxes in tropical seagrass meadows: A mesocosm experiment. Journal of Experimental Marine Biology and Ecology, 561, Article ID 151864.
Åpne denne publikasjonen i ny fane eller vindu >>Effects of calcification on air-water CO2 fluxes in tropical seagrass meadows: A mesocosm experiment
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2023 (engelsk)Inngår i: Journal of Experimental Marine Biology and Ecology, ISSN 0022-0981, E-ISSN 1879-1697, Vol. 561, artikkel-id 151864Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Seagrass meadows deliver a range of ecosystem services, where one of the more important is the capacity to store carbon and serve as sinks for atmospheric carbon dioxide. The capacity of seagrass meadows for carbon storage might, however, be modified and complicated by several factors; one important factor is the possible effects of calcification within the meadows. In tropical areas, seagrass meadows can contain high proportions of calcareous organisms, which through their calcification may cause release of CO2. To study this aspect of the CO2 balance within tropical seagrass systems, we investigated the air-water CO2 flux in seagrass mesocosms with different plant community compositions, i.e. mixtures of seagrass and calcifying macroalgae, having similar overall photosynthetic oxygen evolution rates. The measured CO2 fluxes changed both in rate and direction over the day and were significantly related to plant community composition. Downward fluxes of CO2 were found only over vegetation with high proportion of seagrass and in the afternoon, whereas occurrence of calcifying algae appeared to reverse the flow. A partial least squares (PLS) regression model indicated that pH, pCO2 and dissolved inorganic carbon (DIC) were the primary environmental variables predicting the CO2 fluxes. Our findings show that algal calcification might partly counteract the carbon sequestration in seagrass meadows.

sted, utgiver, år, opplag, sider
Elsevier, 2023
Emneord
Blue carbon, Calcification, Carbon sinks, Climate change mitigation, Plant community composition, Primary productivity, Seagrass ecosystem
HSV kategori
Identifikatorer
urn:nbn:se:sh:diva-50712 (URN)10.1016/j.jembe.2022.151864 (DOI)000920764200001 ()2-s2.0-85146001769 (Scopus ID)
Prosjekter
Climate mitigation services of coastal seascapes
Forskningsfinansiär
Sida - Swedish International Development Cooperation AgencySwedish Research Council, 2019–04038
Tilgjengelig fra: 2023-01-23 Laget: 2023-01-23 Sist oppdatert: 2023-03-06bibliografisk kontrollert
Dahl, M., Asplund, M. E., Bergman, S., Björk, M., Braun, S., Löfgren, E., . . . Gullström, M. (2023). First assessment of seagrass carbon accumulation rates in Sweden: A field study from a fjord system at the Skagerrak coast. PLOS Climate, 2(1), Article ID e0000099.
Åpne denne publikasjonen i ny fane eller vindu >>First assessment of seagrass carbon accumulation rates in Sweden: A field study from a fjord system at the Skagerrak coast
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2023 (engelsk)Inngår i: PLOS Climate, E-ISSN 2767-3200, Vol. 2, nr 1, artikkel-id e0000099Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Seagrass meadows are globally important blue carbon sinks. In northern cold-temperate regions, eelgrass (Zostera marina) is the dominant seagrass species, and although their sedimentary carbon stocks have been quantified across regions, information regarding the CO2 withdrawal capacity as carbon sinks remains scarce. Here we assessed the carbon (Corg) accumulation rates (CARs) and stocks as well as the organic matter sources in five seagrass meadows in the Gullmar Fjord area on the Swedish Skagerrak coast. We found that the mean (±SD) CAR was 14 ± 3 g Corg m-2 yr-1 over the last ~120–140 years (corresponding to a yearly uptake of 52.4 ± 12.6 g CO2 m-2). The carbon sink capacity is in line with other Z. marina areas but relatively low compared to other seagrass species and regions globally. About half of the sedimentary carbon accumulation (7.1 ± 3.3 g Corg m-2 yr-1) originated from macroalgae biomass, which highlights the importance of non-seagrass derived material for the carbon sink function of seagrass meadows in the area. The Corg stocks were similar among sites when comparing at a standardized depth of 50 cm (4.6–5.9 kg Corg m-2), but showed large variation when assessed for the total extent of the cores (ranging from 0.7 to 20.6 kg Corg m-2 for sediment depths of 11 to at least 149 cm). The low sediment accretion rates (1.18–1.86 mm yr-1) and the relatively thick sediment deposits (with a maximum of >150 cm of sediment depth) suggests that the carbon stocks have likely been accumulated for an extended period of time, and that the documented loss of seagrass meadows in the Swedish Skagerrak region and associated erosion of the sediment could potentially have offset centuries of carbon sequestration.

sted, utgiver, år, opplag, sider
Public Library of Science (PLoS), 2023
HSV kategori
Identifikatorer
urn:nbn:se:sh:diva-51277 (URN)10.1371/journal.pclm.0000099 (DOI)
Forskningsfinansiär
The Foundation for Baltic and East European Studies, 21-GP-0005The Foundation for Baltic and East European Studies, 21-PD2-0002Helge Ax:son Johnsons stiftelse , F21-0103Australian Research Council, LE170100219
Merknad

Funder:

Albert och Maria Bergström foundation

Bolin Centre for climate research

Tilgjengelig fra: 2023-04-04 Laget: 2023-04-04 Sist oppdatert: 2023-04-13bibliografisk kontrollert
Mgeleka, S. S. S., Silas, M. O., Mtonga, C., Rumisha, C., Viinamaki, E., Polte, P., . . . Gullström, M. (2023). Population genetics of the hound needlefish Tylosurus crocodilus (Belonidae) indicate high connectivity in Tanzanian coastal waters. Marine Biology Research, 19(4-5), 261-270
Åpne denne publikasjonen i ny fane eller vindu >>Population genetics of the hound needlefish Tylosurus crocodilus (Belonidae) indicate high connectivity in Tanzanian coastal waters
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2023 (engelsk)Inngår i: Marine Biology Research, ISSN 1745-1000, E-ISSN 1745-1019, Vol. 19, nr 4-5, s. 261-270Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The hound needlefish Tylosurus crocodilus (Belonidae) is a highly demanded fish in the local markets of Tanzania, but the growing coastal population threatens its sustainability. As belonids are highly migratory fishes utilising various parts of the seascape, increased fishing pressure may disrupt connectivity patterns on different spatiotemporal scales and disaggregate populations. Using the COI gene, this study assessed the genetic population structure, connectivity patterns, and historical demography of T. crocodilus collected in seven sites spread along Tanzanian coastal waters. Results showed fourteen haplotypes with low overall nucleotide and haplotype diversity. Pairwise F-ST comparisons revealed no significant differences among the sampled sites, except for the northernmost site (Tanga) and an island in the south (Songosongo). Analysis of molecular variance (AMOVA) revealed a non-significant genetic structure among populations (F-ST = 0.01782), suggesting the fishery across Tanzanian waters exploits the same population. Moreover, there was no correlative relationship between genetic and pairwise geographic distances, rejecting the isolation by distance hypothesis. However, neutrality tests and mismatch distribution analysis revealed that recent demographic expansion might exist. Empirical evidence of panmixia suggests high genetic connectivity. In combination with low genetic diversity, management should be directed to actions that prevent genetic diversity loss and the effect of genetic drift on populations.

sted, utgiver, år, opplag, sider
Taylor & Francis, 2023
Emneord
Hound needlefish, population structure, genetic diversity, haplotype diversity, genetic connectivity, >
HSV kategori
Identifikatorer
urn:nbn:se:sh:diva-52148 (URN)10.1080/17451000.2023.2224026 (DOI)001027493100001 ()2-s2.0-85165136324 (Scopus ID)
Forskningsfinansiär
Sida - Swedish International Development Cooperation Agency
Tilgjengelig fra: 2023-08-24 Laget: 2023-08-24 Sist oppdatert: 2023-08-30bibliografisk kontrollert
Elma, E., Gullström, M., Yahya, S. A. .., Jouffray, J.-B., East, H. K. & Nyström, M. (2023). Post-bleaching alterations in coral reef communities. Marine Pollution Bulletin, 186, Article ID 114479.
Åpne denne publikasjonen i ny fane eller vindu >>Post-bleaching alterations in coral reef communities
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2023 (engelsk)Inngår i: Marine Pollution Bulletin, ISSN 0025-326X, E-ISSN 1879-3363, Vol. 186, artikkel-id 114479Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We explored the extent of post-bleaching impacts, caused by the 2014–2016 El Niño Southern Oscillation (ENSO) event, on benthic community structure (BCS) and herbivores (fish and sea urchins) on seven fringing reefs, with differing protection levels, in Zanzibar, Tanzania. Results showed post-bleaching alterations in BCS, with up to 68 % coral mortality and up to 48 % increase in turf algae cover in all reef sites. Herbivorous fish biomass increased after bleaching and was correlated with turf algae increase in some reefs, while the opposite was found for sea urchin densities, with significant declines and complete absence. The severity of the impact varied across individual reefs, with larger impact on the protected reefs, compared to the unprotected reefs. Our study provides a highly relevant reference point to guide future research and contributes to our understanding of post-bleaching impacts, trends, and evaluation of coral reef health and resilience in the region.

sted, utgiver, år, opplag, sider
Elsevier, 2023
Emneord
El Niño, Coral bleaching, Turf algae, Herbivores, Coral reef resilience, Tanzania
HSV kategori
Identifikatorer
urn:nbn:se:sh:diva-50463 (URN)10.1016/j.marpolbul.2022.114479 (DOI)000954336200001 ()36549237 (PubMedID)2-s2.0-85144417776 (Scopus ID)
Forskningsfinansiär
Sida - Swedish International Development Cooperation Agency
Tilgjengelig fra: 2023-01-02 Laget: 2023-01-02 Sist oppdatert: 2023-04-18bibliografisk kontrollert
Silas, M. O., Kishe, M. A., Semba, M. R., Kuboja, B. N., Ngatunga, B., Mgeleka, S. S., . . . Gullström, M. (2023). Seascape configuration influences big blue octopus (Octopus cyanea) catches: Implications for a sustainable fishery. Fisheries Research, 264, Article ID 106716.
Åpne denne publikasjonen i ny fane eller vindu >>Seascape configuration influences big blue octopus (Octopus cyanea) catches: Implications for a sustainable fishery
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2023 (engelsk)Inngår i: Fisheries Research, ISSN 0165-7836, E-ISSN 1872-6763, Vol. 264, artikkel-id 106716Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Seascape configuration is known to influence fish distribution and abundance in coastal waters. However, there is little information regarding how the shape of the coastal seascape influences catches of landed fisheries species, particularly so in the understudied western Indian Ocean (WIO). With focus on big blue octopus (Octopus cyanea), which is a widely found cephalopod species in the WIO, we compared landed catches (biomass, catch rate, and density) in submerged and exposed reefs, and explored the influence of proximity to fishing villages and reef habitat size on octopus landings. We used fishery-dependent data collected between 2018 and 2020 from eight landing sites spread across the Tanzanian coast. We found a strong relationship between biomass of octopus catch and distance from fished reefs to fishing villages, with higher fished biomass on reefs farther away. Octopus densities were higher, while catch rates were lower, on reefs very close to (within one km distance from) fishing villages compared to more distant reefs. In general, submerged reefs provided higher catches than exposed reefs. The low octopus catches on the exposed reefs were attributed to high fishing pressure, while submerged reefs that are only accessible through diving provide optimal areas for octopuses to grow. Octopus catches were, however, not significantly affected by reef size. The findings suggest that management policies should proportionate fishing efforts to ensure sustainable exploitation of reefs and associated fishery resources.

sted, utgiver, år, opplag, sider
Elsevier, 2023
HSV kategori
Forskningsprogram
Miljövetenskapliga studier
Identifikatorer
urn:nbn:se:sh:diva-51506 (URN)10.1016/j.fishres.2023.106716 (DOI)000987245900001 ()2-s2.0-85154529172 (Scopus ID)
Forskningsfinansiär
Sida - Swedish International Development Cooperation Agency
Tilgjengelig fra: 2023-05-17 Laget: 2023-05-17 Sist oppdatert: 2023-06-09bibliografisk kontrollert
Silas, M. O., Semba, M. L., Mgeleka, S. S., Van Well, L., Linderholm, H. W. & Gullström, M. (2023). Using fishers’ local ecological knowledge for management of small-scale fisheries in data-poor regions: Comparing seasonal interview and field observation records in East Africa. Fisheries Research, 264, Article ID 106721.
Åpne denne publikasjonen i ny fane eller vindu >>Using fishers’ local ecological knowledge for management of small-scale fisheries in data-poor regions: Comparing seasonal interview and field observation records in East Africa
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2023 (engelsk)Inngår i: Fisheries Research, ISSN 0165-7836, E-ISSN 1872-6763, Vol. 264, artikkel-id 106721Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Fishers, scientists and policy makers need to describe, understand and “agree on” variations in fish catches caused by exploitation and climate change for effective fisheries management. To achieve this, relevant data with sufficient spatiotemporal resolution is a necessity. In regions of the Global South, such as the Western Indian Ocean (WIO), fish catch data useful for management is scarce or non-existing. Still, the potential of local ecological knowledge to provide such information has not been fully utilised in these regions. In this study, we evaluated fishers’ local ecological knowledge (based on interviews) against detailed seasonal fish catch variability data based on catch per unit effort (CPUE) records. Because of the importance of the monsoon seasons for marine resource variability, differences in fish catches during the northeast (NE) and southeast (SE) monsoon seasons were investigated. Fishers’ perceptions generally agreed with catch data records, both showing that the NE monsoon season generally provides higher catch rates than the SE monsoon season. The fishers’ perceptions at two of the landing sites (Nyamisati and Shangani) contradict the recorded observations by showing highest fish catches during the SE monsoon season. It was clear, however, that fishers’ perceptions in these two sites focused on the most valuable target species (prawn and tuna in Nyamisati and Shangani, respectively) rather than total catches. In this particular case, fishers’ perceptions facilitated the significance of taking target species into consideration. The findings of this study highlight the importance of integrating local ecological knowledge into scientific research to help understand the complex dynamics of coastal fisheries and improve the management of data-poor fisheries. 

sted, utgiver, år, opplag, sider
Elsevier, 2023
Emneord
Fish catch rates, Fishers’ local ecological knowledge, Monsoon seasons, River discharge, Sea surface temperature, Small-scale fisheries
HSV kategori
Forskningsprogram
Miljövetenskapliga studier
Identifikatorer
urn:nbn:se:sh:diva-51423 (URN)10.1016/j.fishres.2023.106721 (DOI)000990368900001 ()2-s2.0-85153612632 (Scopus ID)
Forskningsfinansiär
Sida - Swedish International Development Cooperation Agency
Tilgjengelig fra: 2023-05-08 Laget: 2023-05-08 Sist oppdatert: 2023-06-02bibliografisk kontrollert
Charisiadou, S., Halling, C., Jiddawi, N., von Schreeb, K., Gullström, M., Larsson, T. & Nordlund, L. M. (2022). Coastal aquaculture in Zanzibar, Tanzania. Aquaculture, 546, Article ID 737331.
Åpne denne publikasjonen i ny fane eller vindu >>Coastal aquaculture in Zanzibar, Tanzania
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2022 (engelsk)Inngår i: Aquaculture, ISSN 0044-8486, E-ISSN 1873-5622, Vol. 546, artikkel-id 737331Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

This study provides an overview of the multi-sectoral coastal aquaculture development in Zanzibar (Tanzania) over the last thirty years based on empirical evidence from interviews, field observations, policy reports and literature reviews. Despite the immense potential of aquaculture for food and livelihoods, only seaweed farming has so far established into commercial-scale production. This activity is dominated by women and became widespread in the early 1990s as a small but regular source of income. However, seaweed farming constraints such as frequent seaweed die-offs, as well as economic and institutional constraints inhibit its development. Other types of aquaculture activities such as fish farming, mud crab fattening, half-pearl farming, sea cucumber farming and sponge and coral cultures are under development with limited production or in experimental stages. Common constraints among these activities are economic limitations, lack of technical infrastructure and skills, small and irregular production, and limited trade and market availabilities. At the same time, there is a lack of sufficient management and monitoring systems, while there are no formal regulations or clear strategies to boost aquaculture at the national level. In addition, new aquaculture initiatives are often dominated by donor-driven projects instead of local entrepreneurships. This situation does not encourage engagement in aquaculture and thus such activities are outcompeted by other already established sectors (e.g. agriculture and fisheries). We conclude that aquaculture has great potential to evolve due to high environmental capacity. Nevertheless, achieving profitable production and a stronger commitment within local communities, as well as developing effective mariculture governance through support mechanisms and clear strategies to boost the sector at the national level, are essential for sustainable mariculture development in Zanzibar.

sted, utgiver, år, opplag, sider
Elsevier, 2022
Emneord
Crab fattening, Fish farming, Mariculture governance, Pearl farming, Sea cucumber cultures, Seaweed farming, Western Indian Ocean, Holothuroidea, Porifera
HSV kategori
Identifikatorer
urn:nbn:se:sh:diva-46414 (URN)10.1016/j.aquaculture.2021.737331 (DOI)000729961500018 ()2-s2.0-85113382097 (Scopus ID)
Forskningsfinansiär
Swedish Research Council Formas, 2014-1288Swedish Research Council Formas, 2011-1111Sida - Swedish International Development Cooperation Agency
Tilgjengelig fra: 2021-09-16 Laget: 2021-09-16 Sist oppdatert: 2021-12-23bibliografisk kontrollert
Prosjekter
Climate change mitigation capacity of Swedish coastal seascapes [2021-01280_Formas]; Södertörns högskolaClimate change mitigation capacity of the Baltic coastal seascape: identification of hotspot environments for coastal blue carbon sequestration and guidance for sustainable management of the Baltic coastal landscapes under global change (CLIM-SCAPE) [21-GP-0005_OS]; Södertörns högskola; Publikasjoner
Dahl, M., Asplund, M. E., Bergman, S., Björk, M., Braun, S., Löfgren, E., . . . Gullström, M. (2023). First assessment of seagrass carbon accumulation rates in Sweden: A field study from a fjord system at the Skagerrak coast. PLOS Climate, 2(1), Article ID e0000099. Krause-Jensen, D., Gundersen, H., Björk, M., Gullström, M., Dahl, M., Asplund, M. E., . . . Hancke, K. (2022). Nordic Blue Carbon Ecosystems: Status and Outlook. Frontiers in Marine Science, 9, Article ID 847544.
Organisasjoner
Identifikatorer
ORCID-id: ORCID iD iconorcid.org/0000-0002-7552-2431