Fish Communities and Their Relation to Physical and Chemical Characteristics ofStreams from Selected Environmental Settings in the Lower Susquehanna River Basin, 1993-95

摘要

Studies of fish-community composite in were conducted annually in selectedreaches (from 10 to 303 meters in length) on seven streams from June 1993 to June 1995 within the Lower Susquehanna River Basin. In 1994, additional reaches were selected on three of the streams, resulting in a total of 28 samples. At each reach environmental characteristics consisting of instream and riparian habitat conditions, hydrology, and water quality were determined. The relation of fish communities at these reaches to physical and chemical characteristics of streams was analyzed to determine if the fish communities differed temporally or spatially. Data were analyzed by parametric and multivariate techniques.