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Name: Benthic Index of Biotic Integrity (BIBI)
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Description: The Index of Biotic Integrity (IBI), first developed for fish species by Karr (1981), is a measure of community health. It has since been adapted to evaluate benthic community condition in a variety of regions and water bodies, including freshwater streams in Tennessee (Kerans and Karr 1994), urban streams in the Puget Sound basin (Morley and Karr 2002), and the Chesapeake Bay (Weisburg et al. 1997). The B-IBI index is dependent on habitat, salinity, and season and integrates multiple parameters, such as total abundance/biomass, species diversity, and prevalence of pollution tolerant/sensitive taxa relative to reference communities/conditions. In the Choptank watershed, there are two monitoring programs, the Chesapeake Bay Program/Versar and the Maryland Biological Stream Survey, that measure B-IBI in tidal and non-tidal waters, respectively.
Copyright Text: NOAA/NOS/NCCOS/CCMA/Biogeography Branch
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