Accounting for regional variation in both natural environment and human disturbance to improve performance of multimetric indices of lotic benthic diatoms
文献类型：期刊论文
| 作者 | Tang, Tao1,2; Stevenson, R. Jan2; Infante, Dana M.3 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2016-10-15 |
| 卷号 | 568页码:1124-1134 |
| ISSN号 | 0048-9697 |
| 关键词 | Multimetric index Biological condition Ecoregions Biological typology Bioassessment |
| 英文摘要 | Regional variation in both natural environment and human disturbance can influence performance of ecological assessments. In this study we calculated 5 types of benthic diatom multimetric indices (MMIs) with 3 different approaches to account for variation in ecological assessments. We used: site groups defined by ecoregions or diatom typologies; the same or different sets of metrics among site groups; and unmodeled or modeled MMIs, where models accounted for natural variation in metrics within site groups by calculating an expected reference condition for each metric and each site. We used data from the USEPA's National Rivers and Streams Assessment to calculate the MMIs and evaluate changes in MMI performance. MMI performance was evaluated with indices of precision, bias, responsiveness, sensitivity and relevancy which were respectively measured as MMI variation among reference sites, effects of natural variables on MMIs, difference between MMIs at reference and highly disturbed sites, percent of highly disturbed sites properly classified, and relation of MMIs to human disturbance and stressors. All 5 types of MMIs showed considerable discrimination ability. Using different metrics among ecoregions sometimes reduced precision, but it consistently increased responsiveness, sensitivity, and relevancy. Site specific metric modeling reduced bias and increased responsiveness. Combined use of different metrics among site groups and site specific modeling significantly improved MMI performance irrespective of site grouping approach. Compared to ecoregion site classification, grouping sites based on diatom typologies improved precision, but did not improve overall performance of MMIs if we accounted for natural variation in metrics with site specific models. We conclude that using different metrics among ecoregions and site specific metric modeling improve MMI performance, particularly when used together. Applications of these MMI approaches in ecological assessments introduced a tradeoff with assessment consistency when metrics differed across site groups, but they justified the convenient and consistent use of ecoregions. (C) 2016 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Environmental Sciences |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| 关键词[WOS] | CONTERMINOUS UNITED-STATES ; STREAM FISH ASSEMBLAGES ; MID-ATLANTIC HIGHLANDS ; FRESH-WATER BIOTA ; LANDSCAPE CLASSIFICATIONS ; BIOLOGICAL INTEGRITY ; SPECIES COMPOSITION ; CONTINENTAL-SCALE ; SPATIAL-PATTERNS ; RANDOM FORESTS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000382258300114 |
| 源URL | [http://ir.ihb.ac.cn/handle/342005/28377]  |
| 专题 | 水生生物研究所_淡水生态学研究中心_学位论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China 2.Michigan State Univ, Dept Integrat Biol, Ctr Water Sci, E Lansing, MI 48824 USA 3.Michigan State Univ, Dept Fisheries & Wildlife, E Lansing, MI 48824 USA |
| 推荐引用方式 GB/T 7714 | Tang, Tao,Stevenson, R. Jan,Infante, Dana M.. Accounting for regional variation in both natural environment and human disturbance to improve performance of multimetric indices of lotic benthic diatoms[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2016,568:1124-1134. |
| APA | Tang, Tao,Stevenson, R. Jan,&Infante, Dana M..(2016).Accounting for regional variation in both natural environment and human disturbance to improve performance of multimetric indices of lotic benthic diatoms.SCIENCE OF THE TOTAL ENVIRONMENT,568,1124-1134. |
| MLA | Tang, Tao,et al."Accounting for regional variation in both natural environment and human disturbance to improve performance of multimetric indices of lotic benthic diatoms".SCIENCE OF THE TOTAL ENVIRONMENT 568(2016):1124-1134. |
入库方式： OAI收割
来源：水生生物研究所
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