DOI: 10.1073/pnas.0806481105
论文题名: Recent climate extremes alter alpine lake ecosystems
作者: Parker B.R. ; Vinebrooke R.D. ; Schindler D.W.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2008
卷: 105, 期: 35 起始页码: 12927
结束页码: 12931
语种: 英语
英文关键词: Biodiversity
; Function
; Global change
; Plankton
Scopus关键词: lake water
; organic carbon
; alga
; aquatic environment
; article
; biodiversity
; biomass
; climate
; climate change
; lake ecosystem
; meteorological phenomena
; mixotroph
; phytoplankton
; priority journal
; species
; summer
; temperature
; winter
; Animals
; Canada
; Cold Climate
; Ecosystem
; Fresh Water
; Ice
; Meteorological Factors
; Phytoplankton
; Principal Component Analysis
; Seasons
; algae
英文摘要: Here, we show that alpine lake ecosystems are responsive to interannual variation in climate, based on long-term limnological and meteorological data from the Canadian Rockies. In the 2000s, in years with colder winter temperatures, higher winter snowfall, later snowmelt, shorter ice-free seasons, and dryer summers, relative to the 1990s, alpine lakes became clearer, warmer, and mixed to deeper depths. Further, lakes became more dilute and nutrient-poor, the latter leading to significant declines in total phytoplankton biomass. However, increased concentrations of dissolved organic carbon in lake water stimulated the appearance of small mixotrophic algal species, partially offsetting the decline in autotrophic phytoplankton biomass and increasing algal species richness. The climate regime in the 2000s altered the physical, chemical, and biological character and the function of high-elevation aquatic ecosystems. Forecasts of increased climatic variability in the future pose serious ramifications for both the biodiversity and ecosystem function of high-elevation lakes. © 2008 by The National Academy of Sciences of the USA. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/162460
Appears in Collections: 气候变化与战略
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作者单位: Parker, B.R., Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2E9, Canada, Environment Canada, 123 Main Street, Winnipeg, MB R3C 4W2, Canada; Vinebrooke, R.D., Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2E9, Canada; Schindler, D.W., Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2E9, Canada
Recommended Citation:
Parker B.R.,Vinebrooke R.D.,Schindler D.W.. Recent climate extremes alter alpine lake ecosystems[J]. Proceedings of the National Academy of Sciences of the United States of America,2008-01-01,105(35)