DOI: 10.5194/cp-9-1309-2013
Scopus记录号: 2-s2.0-84883636267
论文题名: Dynamic diatom response to changing climate 0-1.2Ma at Lake El'gygytgyn, Far East Russian Arctic
作者: Snyder J.A. ; Cherepanova M.V. ; Bryan A.
刊名: Climate of the Past
ISSN: 18149324
出版年: 2013
卷: 9, 期: 3 起始页码: 1309
结束页码: 1319
语种: 英语
Scopus关键词: climate variation
; diatom
; dominance
; interglacial
; nutrient cycling
; paleoclimate
; paleoenvironment
; physiological response
; primary production
; regional climate
; species diversity
; Chukchi
; Elgygytgyn Lake
; Russian Federation
英文摘要: The Lake El'gygytgyn sediment record contains an abundant diatom flora through most intervals of the lake's history, providing a means to create and test hypotheses concerning the lake's response to changing climates. The 0-1.2 Ma core interval is characterized by shifts in the dominant planktonic genera and events of exceptional concentration and diversity. Warm interglacial intervals have enhanced concentration and diversity of the plankton. This response is most extreme during exceptional events corresponding to marine isotope stages (MIS) 11 and 31. Diatom concentration and diversity also increase during some cold intervals (e.g., MIS 2), suggesting conditions of lake circulation and nutrient cycling promoting diatom production during these events. Short intervals of low plankton concentration accompanied by shifts in the dominant genus of the lake suggest conditions during certain cold events generate a severe impact on plankton production. The absence of these events during extended intervals of low summer insolation variability suggests a muted cold-event response of the lake system linked to regional climate. © Author(s) 2013. 资助项目: NSF, National Science Foundation
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49384
Appears in Collections: 气候变化与战略
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Recommended Citation:
Snyder J.A.,Cherepanova M.V.,Bryan A.. Dynamic diatom response to changing climate 0-1.2Ma at Lake El'gygytgyn, Far East Russian Arctic[J]. Climate of the Past,2013-01-01,9(3)