Developing biological indicators from diverse data: The Potomac Basin-wide Index of Benthic Integrity (B-IBI)
作者： LeAnne E. Astin
DOI: 10.1016/J.ECOLIND.2006.09.004
关键词: Jackknife resampling 、 Hydrology 、 Metric (unit) 、 Benthic zone 、 Ecology 、 Structural basin 、 Environmental science 、 Index of biological integrity 、 Water quality 、 Drainage basin 、 STREAMS
摘要: Abstract A Basin-wide Index of Benthic Integrity (B-IBI) was developed to uniformly assess aquatic ecosystem health non-tidal, wadeable streams in the multi-jurisdictional Potomac River basin (US). Multiple datasets were merged and used identify stream classes discriminating biological metrics. The index (aggregated metric scores) accurately identified 95% impaired sites. jackknife cross-validation procedure confirmed accuracy B-IBI. B-IBI assessments generally compare favorably states’ derived from same data. habitat quality matrix which includes an indicator anthropogenic alterations disturbances is recommended. more useful than existing state-specific indexes for comparisons across jurisdictional boundaries basin-wide. can improve understanding water issues enhance abilities managers make well-informed decisions concerning basin's non-tidal waters.
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