气候变化领域集成服务门户(CCPortal): Northeastern mountain ponds as sentinels of change: Current and emerging research and monitoring in the context of shifting chemistry and climate interactions

CCPortal

DOI	10.1016/j.atmosenv.2021.118694
	Northeastern mountain ponds as sentinels of change: Current and emerging research and monitoring in the context of shifting chemistry and climate interactions
	Nelson S.J.; Hovel R.A.; Daly J.; Gavin A.; Dykema S.; McDowell W.H.
发表日期	2021
ISSN	1352-2310
卷号	264
英文摘要	Mountain ponds in the northeastern US have undergone acidification and subsequent recovery due to changes in atmospheric deposition, and also reflect physical and biological responses to climate change. These ponds are distinct from other lakes and ponds in the region as they are higher in elevation, relatively small, and have little direct impact from human land use in their watersheds. They are vulnerable to the increases in extreme weather events, overall warming, and shortening of winter that are occurring throughout the northeastern US. We compiled data collected from 1978 to 2019 for mountain ponds >500 m elevation and <60 ha surface area across the northeastern US (Northern Appalachians and Adirondack Mountains). The full dataset includes 257 ponds; 36% of the sites were sampled at sufficient frequency to conduct trend analyses from the 1980s through 2010s. We found widespread, significant declines in sulfate concentrations (95% of sites, ~44% decline) and significantly increasing ANC at 53% of sites (46% of sites-no trend; 1%-significant decrease). Significant declining conductivity at 97% of sites (33% decline) suggested dilution (14.0 μS/cm by the 2010s), and also reflected low chloride concentrations at these sites compared to others in the region affected by road salt contamination. DOC increased significantly in 54% of ponds (45% of sites-no trend; 1%-significant decrease). Increasing DOC has been attributed to both changing sulfate and climate related to increases in precipitation and air temperature. Other changes are occurring in these ponds alongside trends in water chemistry, such as thermal structures shifting as air temperature warms. Zooplankton communities are sensitive to water chemistry parameters associated with acidification recovery, such as DOC, but climate change may complicate transitions back to pre-acidification community composition. Based on this synthesis and a case study that integrates chemical, physical, and biological research, we developed a conceptual model and framework for research and monitoring to support measurements of change in these ecosystems. The findings indicate the importance of eastern mountain ponds in understanding combined impacts of atmospheric deposition and climate change on lake ecosystems and highlight future research directions. © 2021 Elsevier Ltd
关键词	Acidification Climate change Dissolved organic carbon Mountain ponds Northeastern US Zooplankton
语种	英语
scopus关键词	Acidification; Atmospheric chemistry; Atmospheric temperature; Chlorine compounds; Climate change; Deposition; Ecosystems; Land use; Landforms; Meteorological problems; Organic carbon; Sulfur compounds; 'current; Air temperature; Atmospheric depositions; Biological response; Dissolved organic carbon; Mountain pond; Northeastern US; Physical response; Water chemistry; Zooplankton; Lakes; chloride; dissolved organic matter; organic carbon; sodium chloride; sulfate; water; acidification; air temperature; atmospheric chemistry; atmospheric deposition; climate change; community composition; environmental monitoring; land use change; mountain stream; water chemistry; watershed; zooplankton; acidification; air temperature; Article; atmospheric deposition; climate change; concentration (parameter); conceptual framework; conceptual model; conductance; data synthesis; dilution; ecosystem monitoring; lake ecosystem; nonhuman; pond; precipitation; surface area; zooplankton; Adirondack Mountains; Appalachians; New York [United States]; United States
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248230
作者单位	Appalachian Mountain Club, 361 Route 16, Gorham, NH 03581, United States; University of Maine-Farmington, Division of Natural Sciences, 173 High St, Farmington, ME 04938, United States; FB Environmental, 97A Exchange St #305, Portland, ME 04101, United States; University of Maine, Program in Ecology and Environmental Sciences, Nutting Hall, Orono, ME 5760, United States; Alder Environmental, 1130 Maple Way, Jackson, WY 83001, United States; University of New Hampshire, Natural Resources & the Environment, James Hall Rm 170, Durham, NH 03824, United States
推荐引用方式 GB/T 7714	Nelson S.J.,Hovel R.A.,Daly J.,et al. Northeastern mountain ponds as sentinels of change: Current and emerging research and monitoring in the context of shifting chemistry and climate interactions[J],2021,264.
APA	Nelson S.J.,Hovel R.A.,Daly J.,Gavin A.,Dykema S.,&McDowell W.H..(2021).Northeastern mountain ponds as sentinels of change: Current and emerging research and monitoring in the context of shifting chemistry and climate interactions.ATMOSPHERIC ENVIRONMENT,264.
MLA	Nelson S.J.,et al."Northeastern mountain ponds as sentinels of change: Current and emerging research and monitoring in the context of shifting chemistry and climate interactions".ATMOSPHERIC ENVIRONMENT 264(2021).