作者: Melissa T. Drake , Donald L. Pereira
DOI: 10.1577/1548-8675(2002)022<1105:DOAFBI>2.0.CO;2
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摘要: Abstract We developed a fish-based index of biotic integrity (IBI) for set Minnesota lakes having similar geophysical and chemical features. Fish data were collected by means trap nets, gill shoreline seines, backpack electrofishing. Of 30 evaluated metrics, we identified 16 metrics three types: species richness, community assemblage, trophic composition. In contrast to lotic IBIs, where single sampling gear is usually used, from all four gears necessary IBI development. selected based on responses measures human-induced stress watershed land use patterns human population density. Species richness composition describing intolerant or habitat specialist most sensitive differences in stress. Because these found the nearshore zone lakes, effective fish was essential development performance IBI. Trap-net- an...