globalchange  > 气候减缓与适应
DOI: 10.1007/s10533-016-0185-9
Scopus记录号: 2-s2.0-84959538325
论文题名:
Extreme weather years drive episodic changes in lake chemistry: implications for recovery from sulfate deposition and long-term trends in dissolved organic carbon
作者: Strock K.E.; Saros J.E.; Nelson S.J.; Birkel S.D.; Kahl J.S.; McDowell W.H.
刊名: Biogeochemistry
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2016
卷: 127, 期:2018-02-03
起始页码: 353
结束页码: 365
语种: 英语
英文关键词: Atmospheric deposition ; Climate change ; Dissolved organic carbon ; Drought ; Extreme weather ; LTM network
Scopus关键词: acidification ; atmospheric deposition ; climate change ; climate effect ; concentration (composition) ; dissolved organic carbon ; drought ; extreme event ; lacustrine environment ; surface water ; water chemistry ; water quality
英文摘要: Interannual climate variability is expected to increase over the next century, but the extent to which hydroclimatic variability influences biogeochemical processes is unclear. To determine the effects of extreme weather on surface water chemistry, a 30-year record of surface water geochemistry for 84 lakes in the northeastern U.S. was combined with landscape data and watershed-specific weather data. With these data, responses in sulfate (SO4 2−) and dissolved organic carbon (DOC) concentrations were characterized during an extreme wet year and an extreme dry year across the region. Redundancy analysis was used to model lake chemical response to extreme weather as a function of watershed features. A response was observed in DOC and SO4 2− concentration in response to extreme wet and dry years in lakes across the northeastern U.S. Acidification was observed during drought and brownification was observed during wet years. Lake chemical response was related to landscape characteristics in different ways depending on the type of extreme year. A linear relationship between wetland coverage and DOC and SO4 2− deviations was observed during extreme wet years. The results presented here help to clarify the variability observed in long-term recovery from acidification and regional increases in DOC. Understanding the chemical response to weather variability is becoming increasingly important as temporal variation in precipitation is likely to intensify with continued atmospheric warming. © 2016, Springer International Publishing Switzerland.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83426
Appears in Collections:气候减缓与适应
气候变化事实与影响

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作者单位: School of Biology and Ecology and Climate Change Institute, University of Maine, 137 Sawyer Environmental Research Center, Orono, ME, United States; Environmental Science Department, Dickinson College, P.O. Box 1773, Carlisle, PA, United States; Climate Change Institute, University of Maine, Orono, ME, United States; School of Forest Resources and Senator George J. Mitchell Center for Environmental and Watershed Research, University of Maine, Orono, ME, United States; Resilient Energy Solutions, 16 Loon Lane, Mariaville, ME, United States; Department of Natural Resources and the Environment, University of New Hampshire, Durham, NH, United States

Recommended Citation:
Strock K.E.,Saros J.E.,Nelson S.J.,et al. Extreme weather years drive episodic changes in lake chemistry: implications for recovery from sulfate deposition and long-term trends in dissolved organic carbon[J]. Biogeochemistry,2016-01-01,127(2018-02-03)
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