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Diatom assemblage d...
Diatom assemblage dynamics during abrupt climate change : The response oflacustrine diatoms to Dansgaard-Oeschger cycles during the last glacialperiod
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- Ampel, Linda, 1979- (author)
- Stockholms universitet,Institutionen för geologiska vetenskaper
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- Wohlfarth, Barbara (author)
- Stockholms universitet,Institutionen för geologiska vetenskaper
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- Risberg, Jan (author)
- Stockholms universitet,Institutionen för naturgeografi och kvartärgeologi (INK)
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Veres, Daniel (author)
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Leng, Melanie (author)
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Kaislahti Tillman, Päivi (author)
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(creator_code:org_t)
- 2009-06-11
- 2010
- English.
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In: Journal of Paleolimnology. - : Springer Science and Business Media LLC. - 0921-2728 .- 1573-0417. ; 44:2, s. 397-404
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- The sedimentary record from the paleolake at Les Echets in eastern France allowed a reconstruction of the lacustrine response to several abrupt climate shifts during the last glacial period referred to as Dansgaard-Oeschger (DO) cycles. The high-resolution diatom stratigraphy has revealed distinct species turnover events and large fluctuations in stable oxygen isotope values in diatom frustules, as a response to DO climate variability. More or less identical species compositions became re-established during each DO stadial and interstadial phases, respectively. However, the relative abundance of the most dominant species within these assemblages varies and might indicate differences in climatic conditions. Interstadial phases are characterized by identical species successions. Transitions from stadial to interstadial conditions show a distinct Fragilaria-Cyclotella succession, which resembles the diatom regime shifts that have been recognized in some lakes in the Northern Hemisphere since the mid-nineteenth century.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Klimatforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Climate Research (hsv//eng)
Keyword
- Diatoms
- Oxygen Isotopes
- Les Echets
- Dansgaard–Oeschger cycles
- Climatology
- Klimatologi
- Geology
- geologi
Publication and Content Type
- ref (subject category)
- art (subject category)
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