Maryland biological stream survey: a state agency program to assess the impact of anthropogenic stresses on stream habitat quality and biota

摘要

The Maryland Department of Natural Resources is conducting the Maryland Biological Stream Survey, a probability-based sampling program, stratified by river basin and stream order, to assess water quality, physical habitat, and biological conditions in first through third order, non-tidal streams. These streams comprise about 90percent of all lotic water miles in the state. About 300 sites (75 m segments) are being sampled during spring and summer each year. All basins in the state ill be sampled over a three-year period, 1995-97.