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DOI | 10.1111/1752-1688.12399 |
Multivariate Condition Assessment of Watersheds with Linked Micromaps | |
McManus, Michael G.1; Pond, Gregory J.2; Reynolds, Lou2; Griffith, Michael B.1 | |
发表日期 | 2016 |
ISSN | 1093-474X |
卷号 | 52期号:2页码:494-507 |
英文摘要 | A challenge for statewide stream monitoring is visualizing the spatial and statistical characteristics of such data to compare the biotic condition of watersheds and relate that condition to watershed-level estimates of instream variables. We used linked micromaps on stream survey data of 25 subbasins (766-5,982km(2)) for biotic condition, nine water quality, and twohabitat variables. Subbasin biotic condition was negatively correlated with conductivity, magnesium and sulfate concentrations, and weakly positively correlated with habitat scores of sedimentation and embeddedness, with higher scores indicating better habitat. Positive spatial autocorrelation was detected among the subbasins in both habitat variables, iron concentration, pH, and exceedances of fecal coliform criteria as shown in linked micromaps. A spatial principal components analysis reduced the 11 environmental variables to two principal axes. The first axis synthesized a gradient of water quality and habitat scores among the subbasins. Subbasin biotic condition regressed on first axis subbasin scores had a significant, negative slope and accounted for 55% of the variation. Subbasins in degraded biotic condition had elevated conductivities and ion concentrations in northern and southern subbasins, and low habitat scores in western subbasins. Through linked micromaps, we compared the biotic condition among subbasins and identified stressors prevalent among subbasins that affected biotic condition. |
英文关键词 | ecological assessment;geospatial analysis;invertebrates;linked micromap;spatial autocorrelation;stressor;stream monitoring |
语种 | 英语 |
WOS记录号 | WOS:000373808800015 |
来源期刊 | JOURNAL OF THE AMERICAN WATER RESOURCES ASSOCIATION |
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/56694 |
作者单位 | 1.US EPA, Off Res & Dev, Natl Ctr Environm Assessment, 26 W Martin Luther King Dr,MS A110, Cincinnati, OH 45268 USA; 2.US EPA, Off Monitoring & Assessment, Environm Assessment & Innovat Div, Reg 3, Wheeling, WV 26003 USA |
推荐引用方式 GB/T 7714 | McManus, Michael G.,Pond, Gregory J.,Reynolds, Lou,et al. Multivariate Condition Assessment of Watersheds with Linked Micromaps[J]. 美国环保署,2016,52(2):494-507. |
APA | McManus, Michael G.,Pond, Gregory J.,Reynolds, Lou,&Griffith, Michael B..(2016).Multivariate Condition Assessment of Watersheds with Linked Micromaps.JOURNAL OF THE AMERICAN WATER RESOURCES ASSOCIATION,52(2),494-507. |
MLA | McManus, Michael G.,et al."Multivariate Condition Assessment of Watersheds with Linked Micromaps".JOURNAL OF THE AMERICAN WATER RESOURCES ASSOCIATION 52.2(2016):494-507. |
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