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JPR Advance Access published online on October 5, 2005
Journal of Plankton Research, doi:10.1093/plankt/fbi079
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© The Author 2005. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org
Received December 7, 2005
Accepted September 28, 2005

Article

A Review of Phytoplankton Composition Within Chesapeake Bay and its Tidal Estuaries

Harold G. Marshall 1*, Lubomira Burchardt 2, and Richard Lacouture 3

1 Department of Biological Sciences, Old Dominion University, Norfolk, VA 23529-0266, U.S.A
2 Collegium Biologicum, Department of Hydrobiology, Adam Mickiewicz University, 61-614 Poznan, Poland
3 Morgan State University Estuarine Research Center, St. Leonard, MD 20685, U.S.A

* To whom correspondence should be addressed.
Harold G. Marshall, E-mail: hmarshal{at}odu.edu


  Abstract

Based on a continuous 20-year data base of monthly sampling in Chesapeake Bay and tidal regions of its major tributaries, 1454 phytoplankton taxa have been identified in these waters. They represent a diverse assemblage of species with a dominant diatom flora throughout the year, in addition to large seasonal representation by chlorophytes, cyanobacteria, cryptophytes, and dinoflagellates. Included among this flora were 34 potential toxin producing species. The phytoplankton compositions associated with the seasonal successional patterns are discussed, in addition to characterizing the dominant floral relationships, with comparison to early composition records within the Bay. Several of the present day most common taxa were similar to those reported in sediment cores from the Bay dating to periods prior to European settlement. Comparison to collections made ca. 8 decades ago (1916-1922) within Chesapeake Bay indicated several of the same dominant flora remain dominant today, however, their cell concentrations are now significantly greater along with an increased diversity of species compared to these earlier studies.

Communicating Editor: KJ Flynn
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