Standing crops of marsh vegetation of two tributaries of Chesapeake Bay |
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Authors: | David A Flemer Donald R Heinle Carolyn W Keefe D Heyward Hamilton |
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Institution: | 1. Center for Environmental and Estuarine Studies Chesapeake Biological Laboratory, University of Maryland, 20688, Solomons, Maryland
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Abstract: | A comparative study of the standing crop of marsh vegetation was made of the Patuxent River and Parker Creek, two tributaries of Chesapeake Bay. The biomass of marsh vegetation in the tidal freshwater and brackish regions of the Patuxent was relatively uniform with regard to salinity, seasonally high concentrations of dissolved nitrogen, and phosphorus and nutrient gradient. Maximum values of biomass occurred in the tidal freshwater and slightly brackish water region of Parker Creek, a system whose nutrient concentrations approximated 20% of those of Patuxent River. Biomass values for the Patuxent River and Parker Creek averaged about 1417 and 895 g m?2 dry weight, respectively. Estimates of total annual marsh production based on the maximum standing crop was 27×103 and 519 metric tons, respectively, for the Patuxent River and Parker Creek. |
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