Show simple item record

dc.contributor.authorSzymczak-Zyla, Malgorzata
dc.contributor.authorKrajewska, Magdalena
dc.contributor.authorWitak, Małgorzata
dc.contributor.authorCiesielski, Tomasz Maciej
dc.contributor.authorArdelan, Murat Van
dc.contributor.authorJenssen, Bjørn Munro
dc.contributor.authorGoslar, Tomasz
dc.contributor.authorWinogradow, Aleksandra
dc.contributor.authorFilipkowska, Anna
dc.contributor.authorLubecki, Ludwik
dc.contributor.authorZamojska, Anna
dc.contributor.authorKowalewska, Grażyna
dc.date.accessioned2020-04-06T07:41:26Z
dc.date.available2020-04-06T07:41:26Z
dc.date.created2019-10-21T12:07:40Z
dc.date.issued2019
dc.identifier.citationPaleoceanography and Paleoclimatology. 2019, 34 (2), 136-152.en_US
dc.identifier.issn2572-4517
dc.identifier.urihttps://hdl.handle.net/11250/2650442
dc.description.abstractEutrophication is manifested by increased primary production leading to oxygen depletion in near‐bottom water and toxic cyanobacteria blooms. This is an important contemporary problem of the Baltic Sea and many other coastal waters. The present eutrophication is mainly ascribed to anthropogenic activity. To compare the present trophic state with that during past millennia, two sediment cores (50 cm long and ~400 cm long covering ca. 5,500 years) were taken from the Gulf of Gdańsk (southern Baltic Sea). The core subsamples were analyzed for phytoplankton pigments (chlorophylls and their derivatives, and carotenoids). In addition, carbon (Ctot, Corg, and δ13C), 14C dating, grain size, diatoms, and selected metals in the cores were analyzed to determine conditions in the depositional environment. The results indicated that there were high primary production periods in the past, during the Littorina Sea and the Roman Climatic Optimum, accompanied by oxygen deficiency in the near‐bottom water, most probably caused by climate warming. The ratio of 132,173‐cyclopheophorbide‐a enol, a labile degradation product of chlorophyll‐a, to the sum of other chloropigments‐a (CPPB‐aE/ΣChlns‐a) is proposed as a new paleoredox proxy. Heterocystous cyanobacteria blooms of an intensity similar to or even greater than at present also occurred in past millennia and were connected with climate warming. Hence, eutrophication must have occurred in the past, which means that natural factors have a substantial influence on it.en_US
dc.language.isoengen_US
dc.publisherWileyen_US
dc.titlePresent and Past‐Millennial Eutrophication in the Gulf of Gdańsk (Southern Baltic Sea)en_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.source.pagenumber136-152en_US
dc.source.volume34en_US
dc.source.journalPaleoceanography and Paleoclimatologyen_US
dc.source.issue2en_US
dc.identifier.doi10.1029/2018PA003474
dc.identifier.cristin1738982
dc.relation.projectAndre: 196128 NATIONAL CENTRE FOR RESEARCH AND DEVELOPMENTen_US
dc.relation.projectAndre: 196128 National Centre for Research and Developmenten_US
dc.description.localcode© 2019. American Geophysical Union.en_US
cristin.unitcode194,66,10,0
cristin.unitcode194,66,25,0
cristin.unitnameInstitutt for biologi
cristin.unitnameInstitutt for kjemi
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record