| DOI: | 10.1002/2016GL069036
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| 论文题名: | Climate regulates alpine lake ice cover phenology and aquatic ecosystem structure |
| 作者: | Preston D.L.; Caine N.; McKnight D.M.; Williams M.W.; Hell K.; Miller M.P.; Hart S.J.; Johnson P.T.J.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9545
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| EISSN: | 1944-9276
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| 出版年: | 2016
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| 卷: | 43, 期:10 | | 起始页码: | 5353
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| 结束页码: | 5360
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| 语种: | 英语
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| 英文关键词: | hydrology
; ice cover
; precipitation
; stratification
; temperature
; water chemistry
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| Scopus关键词: | Aquatic ecosystems
; Digital storage
; Ecology
; Ecosystems
; Hydrology
; Ice
; Lakes
; Precipitation (chemical)
; Snow
; Stream flow
; Temperature
; Thermal stratification
; Biological response
; Dissolved nitrogen
; Ecosystem structure
; Ice cover
; Ion concentrations
; Warm temperatures
; Water chemistry
; Yearly variations
; Climate change
; alpine environment
; aquatic ecosystem
; climate change
; climate conditions
; data set
; ecosystem structure
; elevation
; hydrology
; ice cover
; permafrost
; phenology
; stratification
; streamflow
; temperature effect
; vulnerability
; water chemistry
; Colorado
; United States
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| 英文摘要: | High-elevation aquatic ecosystems are highly vulnerable to climate change, yet relatively few records are available to characterize shifts in ecosystem structure or their underlying mechanisms. Using a long-term data set on seven alpine lakes (3126 to 3620 m) in Colorado, USA, we show that ice-off dates have shifted 7 days earlier over the past 33 years and that spring weather conditions—especially snowfall—drive yearly variation in ice-off timing. In the most well studied lake, earlier ice-off associated with increases in water residence times, thermal stratification, ion concentrations, dissolved nitrogen, pH, and chlorophyll a. Mechanistically, low spring snowfall and warm temperatures reduce summer stream flow (increasing lake residence times) but enhance melting of glacial and permafrost ice (increasing lake solute inputs). The observed links among hydrological, chemical, and biological responses to climate factors highlight the potential for major shifts in the functioning of alpine lakes due to forecasted climate change. ©2016. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84971251087&doi=10.1002%2f2016GL069036&partnerID=40&md5=9f29373b2f2d4d637362cbcc3210de6e
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/10508
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | Department of Integrative Biology, Oregon State University, Corvallis, OR, United States
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| Recommended Citation: | |
Preston D.L.,Caine N.,McKnight D.M.,et al. Climate regulates alpine lake ice cover phenology and aquatic ecosystem structure[J]. Geophysical Research Letters,2016-01-01,43(10).
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