Date of Award

Spring 1974

Document Type


Degree Name

Master of Science (MS)


Biological Sciences



Committee Director

Harold G. Marshall

Committee Member

John R. Holsinger

Committee Member

Gerald J. Pepe

Call Number for Print

Special Collections LD4331.B46 H54


Five stations were established in the Southern Branch of the Elizabeth River, the Dismal Swamp Canal, the Albemarle and Chesapeake Canal and the North Landing River. Representative samples of zooplankton were taken from October 1971 to June 1972. A. total of 57 species were identified and discussions regarding seasonal distribution in relation to physical factors and circulation are presented.

The composition of the zooplankton was found to fluctuate greatly due to the variables characteristic of the study area. The combined effect of tidal flow with freshwater input in conjunction with drainage from the Great Dismal Swamp, results in isolated populations in a small geographical region of interconnecting water­ ways. Indications suggest that endemic species do occur in an area where great salinity fluctuations are normal.


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