Parameter Tree:
EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > WATER QUALITY INDEXES > INDEX OF BIOTIC INTEGRITY

Definition:
A scientific tool used to identify and classify water pollution problems. An Index of Biotic Integrity (IBI) associates anthropogenic influences on a water body with biological activity in the water body, and is formulated using data developed from biosurveys.

Reference:
Karr, J. R. (1981), Assessment of Biotic Integrity Using Fish Communities. Fisheries, 6: 21?27. doi:10.1577/1548-8446(1981)006<0021:AOBIUF>2.0.CO;2