Climate Change Data Portal
DOI | 10.1080/10402381.2014.906524 |
Lakeshore and littoral physical habitat structure in a national lakes assessment | |
Kaufmann, Philip R.1; Peck, David V.1; Paulsen, Steven G.1; Seeliger, Curt W.2; Hughes, Robert M.3,4; Whittier, Thomas R.5; Kamman, Neil C.6 | |
发表日期 | 2014-04-03 |
ISSN | 1040-2381 |
卷号 | 30期号:2页码:192-215 |
英文摘要 | Near-shore physical habitat is crucial for supporting biota and ecological processes in lakes. We used data from a statistical sample of 1101 lakes and reservoirs from the 2007 US Environmental Protection Agency National Lakes Assessment (NLA) to develop 4 indices of physical habitat condition: (1) Lakeshore Anthropogenic Disturbance, (2) Riparian Vegetation Cover Complexity, (3) Littoral Cover Complexity, and (4) Littoral-Riparian Habitat Complexity. We compared lake index values with distributions from least-disturbed lakes. Our results form the first US national assessment of lake physical habitat, inferring the condition (with known confidence) of the 49,500 lakes and reservoirs in the conterminous United States with surface areas >4 ha and depths >1m. Among the physical and chemical characteristics examined by the NLA, near-shore physical habitat was the most extensively altered relative to least-disturbed condition. Riparian Vegetation Cover Complexity was good in 46% (+/- 3%), fair in 18% (+/- 2%), and poor in 36% (+/- 2%) of lakes. Littoral-Riparian Habitat Complexity was good in 47% (+/- 3%), fair in 20% (+/- 2%), and poor in 32% (+/- 2%) of lakes. In every ecoregion, habitat condition was negatively related to anthropogenic pressures. Gradients of increased anthropogenic disturbance were accompanied by progressive simplification of littoral and riparian physical habitat. Nationwide, the proportion of lakes with degraded near-shore physical habitat was equal to or greater than that for excess nutrients and much greater than that for acidic conditions. In addition to better management of lake basins, we suggest an increased focus on protecting littoral and riparian physical habitat through better management of near-shore anthropogenic disturbance. |
英文关键词 | lake ecology;lake habitat;physical habitat structure;hydromorphology;reference condition;littoral habitat;riparian disturbance;monitoring;habitat complexity |
语种 | 英语 |
WOS记录号 | WOS:000335861700008 |
来源期刊 | LAKE AND RESERVOIR MANAGEMENT
![]() |
来源机构 | 美国环保署 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/59356 |
作者单位 | 1.US EPA, Off Res & Dev, Natl Hlth & Environm Effects Res Lab, Western Ecol Div, Corvallis, OR 97333 USA; 2.US EPA, Raytheon Informat Serv, Corvallis, OR 97333 USA; 3.Amnis Opes Inst, Corvallis, OR 97333 USA; 4.Oregon State Univ, Dept Fisheries & Wildlife, Corvallis, OR 97333 USA; 5.Oregon State Univ, Dept Forest Ecosyst & Soc, Corvallis, OR 97331 USA; 6.Vermont Dept Environm Conservat, Water Qual Div, Monitoring Assessment & Planning Program, Waterbury, VT 05671 USA |
推荐引用方式 GB/T 7714 | Kaufmann, Philip R.,Peck, David V.,Paulsen, Steven G.,et al. Lakeshore and littoral physical habitat structure in a national lakes assessment[J]. 美国环保署,2014,30(2):192-215. |
APA | Kaufmann, Philip R..,Peck, David V..,Paulsen, Steven G..,Seeliger, Curt W..,Hughes, Robert M..,...&Kamman, Neil C..(2014).Lakeshore and littoral physical habitat structure in a national lakes assessment.LAKE AND RESERVOIR MANAGEMENT,30(2),192-215. |
MLA | Kaufmann, Philip R.,et al."Lakeshore and littoral physical habitat structure in a national lakes assessment".LAKE AND RESERVOIR MANAGEMENT 30.2(2014):192-215. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。