Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016WR020096 |
Nitrogen Subsidies in Glacial Meltwater: Implications for High Elevation Aquatic Chains | |
Warner, K. A.1,2; Saros, J. E.1,2; Simon, K. S.3 | |
2017-11-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2017 |
卷号 | 53期号:11 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; New Zealand |
英文摘要 | In certain alpine systems, glacially-fed lakes and streams have nitrate concentrations one to two orders of magnitude higher than lakes and streams fed by snowmelt alone. To better understand how nitrogen subsidies from glacial meltwater propagate down a chain of lakes and streams we assessed the effects of these subsidies in a set of aquatic chains in the central U.S. Rocky Mountains. Algal biomass, algal community assemblage, and nutrient limitation were measured in a chain of lakes and streams fed by glacial meltwater (GSF) and a chain fed by snowmelt alone (SF). Nitrate (NO3-) concentrations in the GSF chain ranged from 228 to 70 g L-1 declining from the top of the chain to the bottom, while NO3- concentrations in the SF chain were consistently low,<9 g L-1. In the glacial chain, both lakes were phosphorus-limited; the strength of this limitation signal weakened down the chain, with the lake at the bottom showing secondary nitrogen and phosphorus colimitation. In the snowmelt chain, lakes were colimited with no change in strength down the chain. Algal biomass averaged 2.6 g L-1 and 7.3 g m(-2) in SF lakes and streams and 5.4 g L-1 and 9.2 g m(-2) in GSF lakes and streams. Phytoplankton and periphyton communities in the GSF chain were more homogeneous compared to the SF chain. Our results indicate nutrient subsidies in glacial meltwaters can propagate down aquatic chains and alter nutrient limitation patterns and algal communities compared to SF systems, creating heterogeneous patterns across the landscape. |
英文关键词 | nitrogen subsidies glacial meltwater aquatic chains |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000418736700063 |
WOS关键词 | COLORADO FRONT RANGE ; GREEN LAKES VALLEY ; PHYTOPLANKTON NUTRIENT LIMITATION ; UNPRODUCTIVE SWEDISH LAKES ; STREAM ECOSYSTEM ; ALPINE LAKES ; PHOSPHORUS LIMITATION ; DIATOM COMMUNITIES ; SPATIAL-PATTERNS ; ROCKY-MOUNTAINS |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/21622 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Maine, Climate Change Inst, Orono, ME 04469 USA; 2.Univ Maine, Sch Biol & Ecol, Orono, ME 04469 USA; 3.Univ Auckland, Sch Environm, Auckland, New Zealand |
推荐引用方式 GB/T 7714 | Warner, K. A.,Saros, J. E.,Simon, K. S.. Nitrogen Subsidies in Glacial Meltwater: Implications for High Elevation Aquatic Chains[J]. WATER RESOURCES RESEARCH,2017,53(11). |
APA | Warner, K. A.,Saros, J. E.,&Simon, K. S..(2017).Nitrogen Subsidies in Glacial Meltwater: Implications for High Elevation Aquatic Chains.WATER RESOURCES RESEARCH,53(11). |
MLA | Warner, K. A.,et al."Nitrogen Subsidies in Glacial Meltwater: Implications for High Elevation Aquatic Chains".WATER RESOURCES RESEARCH 53.11(2017). |
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