sh.sePublikationer
Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • harvard-anglia-ruskin-university
  • apa-old-doi-prefix.csl
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Reconstructing Holocene temperature and salinity variations in the western Baltic Sea region: a multi-proxy comparison from the Little Belt (IODP Expedition 347, Site M0059)
University of Hamburg.
University of Bremen.
UCLA.
Aarhus University, Université de Perpignan.
Visa övriga samt affilieringar
2017 (Engelska)Ingår i: Biogeosciences, ISSN 1726-4170, E-ISSN 1726-4189, Vol. 14, s. 5607-5632Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Sediment records recovered from the Baltic Sea during Integrated Ocean Drilling Program Expedition 347 provide a unique opportunity to study paleoenvironmental and climate change in central and northern Europe. Such studies contribute to a better understanding of how environmental parameters change in continental shelf seas and enclosed basins. Here we present a multi-proxy-based reconstruction of paleotemperature (both marine and terrestrial), paleosalinity, and paleoecosystem changes from the Little Belt (Site M0059) over the past  ∼  8000 years and evaluate the applicability of inorganic- and organic-based proxies in this particular setting. All salinity proxies (diatoms, aquatic palynomorphs, ostracods, diol index) show that lacustrine conditions occurred in the Little Belt until  ∼  7400 cal yr BP. A connection to the Kattegat at this time can thus be excluded, but a direct connection to the Baltic Proper may have existed. The transition to the brackish–marine conditions of the Littorina Sea stage (more saline and warmer) occurred within  ∼  200 years when the connection to the Kattegat became established after  ∼  7400 cal yr BP. The different salinity proxies used here generally show similar trends in relative changes in salinity, but often do not allow quantitative estimates of salinity. The reconstruction of water temperatures is associated with particularly large uncertainties and variations in absolute values by up to 8 °C for bottom waters and up to 16 °C for surface waters. Concerning the reconstruction of temperature using foraminiferal Mg  /  Ca ratios, contamination by authigenic coatings in the deeper intervals may have led to an overestimation of temperatures. Differences in results based on the lipid paleothermometers (long chain diol index and TEXL86) can partly be explained by the application of modern-day proxy calibrations to intervals that experienced significant changes in depositional settings: in the case of our study, the change from freshwater to marine conditions. Our study shows that particular caution has to be taken when applying and interpreting proxies in coastal environments and marginal seas, where water mass conditions can experience more rapid and larger changes than in open ocean settings. Approaches using a multitude of independent proxies may thus allow a more robust paleoenvironmental assessment.

Ort, förlag, år, upplaga, sidor
Copernicus GmbH , 2017. Vol. 14, s. 5607-5632
Nationell ämneskategori
Multidisciplinär geovetenskap
Forskningsämne
Miljövetenskapliga studier
Identifikatorer
URN: urn:nbn:se:sh:diva-33885DOI: 10.5194/bg-14-5607-2017ISI: 000417849900001Scopus ID: 2-s2.0-85038405810Lokalt ID: 2207/3.1.1/2014OAI: oai:DiVA.org:sh-33885DiVA, id: diva2:1165890
Ingår i projekt
Senpleistocen och Holocen klimatpåverkan på Östersjön, ÖstersjöstiftelsenUPPBASER - Understanding Past and Present Baltic Sea Ecosystem Response - background for a sustainable future, ÖstersjöstiftelsenIODP Expedition 347 Östersjöns miljöhistoria, Vetenskapsrådet
Forskningsfinansiär
Östersjöstiftelsen, 1562/3.1.1/2013Östersjöstiftelsen, 2207/3.1.1/2014Tillgänglig från: 2017-12-14 Skapad: 2017-12-14 Senast uppdaterad: 2020-03-25Bibliografiskt granskad

Open Access i DiVA

Fulltext saknas i DiVA

Övriga länkar

Förlagets fulltextScopus

Personposter BETA

Andrén, ElinorAndrén, Thomas

Sök vidare i DiVA

Av författaren/redaktören
Andrén, ElinorAndrén, Thomas
Av organisationen
Miljövetenskap
I samma tidskrift
Biogeosciences
Multidisciplinär geovetenskap

Sök vidare utanför DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetricpoäng

doi
urn-nbn
Totalt: 218 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • harvard-anglia-ruskin-university
  • apa-old-doi-prefix.csl
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf