Cyanobacteria Dominance in the Oligohaline Waters of Back Bay, Virginia

Harold G. Marshall

doi:10.2179/11-046

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Harold G. Marshall^1,*

¹Department of Biological Sciences, Old Dominion University, Norfolk, Virginia 23529-0266

^*email address: hmarshal@odu.edu

Abstract

Back Bay and its flora have historically been influenced by the interaction of freshwater flow in combination with frequent intrusion of saline water into its basin. These events have resulted in a dynamic environmental setting influencing the abundance and composition of its phytoplankton community. Dominating these oligohaline waters is a diverse representation and high abundance of freshwater filamentous and colonial cyanobacteria. These include the nonheterocystous Planktolyngbya contorta, Planktolyngbya limnetica, and Pseudanabaena limnetica, taxa implicated as bloom producers in Bay waters with N:P molar ratios ranging from 23:1 to 74:1.

Citation Download Citation

Harold G. Marshall "Cyanobacteria Dominance in the Oligohaline Waters of Back Bay, Virginia," Castanea 77(3), 235-244, (1 September 2012). https://doi.org/10.2179/11-046

Received: 19 December 2011; Accepted: 1 June 2012; Published: 1 September 2012

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