Changes in Fish Communities in the Upper Patuxent River from 1966 to 1977

Tsai, Chu-fa and Gollembiewski, Sandra Lee (1979) Changes in Fish Communities in the Upper Patuxent River from 1966 to 1977. College Park, MD, University of Maryland Center for Environmental and Estuarine Studies, (Reference Series,79-141)

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Abstract

Ten year comparison of fish survey's with respect to diversity evenness and composition of fish communities. The upper Patuxent River was divided into Piedmont Plateau and Coastal Plain regions, not only for geographical purposes, but also because of the clustering of sewage treatment plants in the Coastal Plain region. In the Piedmont Plateau region, the fish species diversity changed very little from 1966 to 1977 ( Little Patuxent -- 2.82 to 2.66; Middle Patuxent -- 2.86 to 2.83; and main stem -- 2.46 to 2.63), except in a section of Little Patuxent River at and below the City of Columbia where the species diversity index showed a significant reduction from 2.97 to 1.99, and in a section of the main stem Patuxent River immediately downstream from the Brighton Dam of the Triadelphia Reservoir where the index increased significantly from 1.66 to 3.20. In the Coastal Plain region, a significant reduction in the fish species diversity index occurred between 1966 and 1977 below the two sewage treatment plant outfalls : Savage -- 2.69 to 0 and Patuxent-Crofton -- 3.06 to 1.33. Also, the substantial reduction in the species diversity index which had already occurred in 1966 below the six other plant: outfalls of Fort Meade No. I, Fort Meade No. 2, Maryland House of Correction, Maryland City , Parkway and Bowie, remained depressed in 1977. On the other hand, below the Horsepen Sewage Treatment Plant (a tertiary plant practicing dechlorination) the species diversity index increased from 1.91 to 2.8. (PDF contains 48 pages)

Item Type: Monograph or Serial Issue
Title: Changes in Fish Communities in the Upper Patuxent River from 1966 to 1977
Personal Creator/Author:
CreatorsEmail
Tsai, Chu-fa
Gollembiewski, Sandra Lee
Series Name: Reference Series
Volume: 79
Number: 141
Date: 1979
Publisher: University of Maryland Center for Environmental and Estuarine Studies
Place of Publication: College Park, MD
Projects: University of Maryland Center for Environmental Science
Funders: Water Resources Administration, Department of Natural Resources, State of Maryland
Issuing Agency: University of Maryland Center for Environmental Science. Chesapeake Biological Laboratory
Additional Information: UMCEES Ref. No. 79-41
Uncontrolled Keywords: sewage outfalls; dechlorination; Maryland; Little Patuxent; Piedmont Plateau; Hammond Branch; Dorsey Run; species diversity;
Subjects: Ecology
Environment
Fisheries
Pollution
Item ID: 4900
Depositing User: Kathleen Heil
Date Deposited: 03 Mar 2011 22:11
Last Modified: 29 Sep 2011 15:44
URI: http://aquaticcommons.org/id/eprint/4900

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