PHYTOPLANKTON TRENDS: CHESAPEAKE BAY

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PHYTOPLANKTON TRENDS CHESAPEAKE BAY   AND MAJOR
TRIBUTARIES, 1985-2002
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MARYLAND GENERAL TRENDS 1985-2002 Choptank
River Chlorophyll
Increasing Phytoplankton biomass Mixed
(ET5.1 decreasing ET5.2 increasing) Phytoplankto
n abundance Increasing (ET5.2) Diatom Biomass
Mixed (ET5.1 decreasing ET5.2
increasing) inoflagellate Biomass
Increasing (ET5.2)   Potomac River Chlorophyll
Increasing Productivity
Increasing (TF2.3 and
LE2.2) Phytoplankton biomass Increasing
(TF2.3) Phytoplankton abundance
Increasing Cyanobacteria biomass
Increasing (TF2.3 and LE2.2) Diatom biomass
Increasing (LE2.2)   Patuxent
River Phytoplankton abundance Increasing
(LE1.1) Diatom biomass
Increasing (LE1.1)   MD Mainstem
Bay Phytoplankton abundance
Increasing Cyanobacteria biomass
Increasing
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GENERAL TRENDS 1985-2002 Virginia Mainstem
Bay Phytoplankton abundance
Mixed Phytoplankton biomass
Mixed Productivity
Decreasing Diatom biomass
Increasing Dinoflagellate biomass
Mixed Cyanobacteria biomass
Increasing Cyanobacteria abundance
Increasing Chlorophyte biomass
Increasing Autotrophic picoplankton
Mixed Chlorophyll
ns
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Virginia Tributary Trends
Rapp. York
James Phytoplankton abundance Inc.
Inc. Inc. Phytoplankton biomass
Inc. Inc. Inc. Productivity
ns ns
mixed Diatom biomass Inc.
Inc. Inc. Dinoflagellate biomass
mixed ns ns Cyanobacteria
biomass Inc. Inc.
mixed Cyanobacteria abundance Inc.
Inc. Inc. Autotrophic picoplankton
mixed mixed mixed Chlorophytes
Inc. Inc.
Inc. Chlorophyll
mixed mixed mixed
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Common Trends Throughout Chesapeake Bay
And Each Major Tributary   Total Bay
Mainstem Cyanobacteria Biomass
Increasing Phytoplankton Abundance
Increasing   Bay Tributaries Diatom Biomass
Increasing Phytoplankton
Abundance Increasing
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Representative phytoplankton papers in various
degrees of preparation and submission for
Chesapeake Bay estuarine system (List
incomplete).   1.Buchanan, C., R. Lacouture, H.
Marshall, M. Olson, and J. Johnson.
Phytoplankton Reference Communities in Chesapeake
Bay. 2. Lacouture, R. and H. Marshall.
Phytoplankton biovolume estimates and
biomass conversions for the Chesapeake Bay
estuary system. 3. Lacouture, R., C. Buchanan, H.
Marshall, and J. Johnson. Chesapeake Bay
phytoplankton index of biotic integrity. 4.
Marshall, H., R. Lacouture, C. Buchanan, and J.
Johnson. Phytoplankton assemblages
associated with water quality conditions
during spring and summer in salinity regions of
Chesapeake Bay derived from a long term
monitoring program. 5. Marshall, H. and L.
Burchardt. Phytoplankton development and
composition within tidal freshwater regions of
two Virginia rivers. 6. Marshall, H., L.
Burchardt, and R. Lacouture. Chesapeake Bay
Phytoplankton Composition. I. Addendum,
including tidal rivers.