Phytoplankton assemblages associated with water quality and salinity regions in Chesapeake Bay, USA

Marshall, Harold G.; Lacouture, Richard; Buchanan, Claire; Johnson, Jacqueline M.

doi:10.1016/j.ecss.2006.03.019

Cited by 85 publications

(55 citation statements)

References 12 publications

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“…Wendker et al (1997) reported primary production of microbenthic algae at mud flat stations in southern Chesapeake Bay at 142.4 g C m −2 year −1 . Various relationships among phytoplankton components within different salinity regions and water quality conditions in Chesapeake Bay and its major tidal tributaries are discussed by Marshall et al (2006). The objectives of this study are to characterize the phytoplankton composition in this ecosystem since 1985, and to identify significant relationships associated with long term trends within this estuarine complex.…”

Section: Introductionmentioning

confidence: 99%

Assessment and significance of phytoplankton species composition within Chesapeake Bay and Virginia tributaries through a long-term monitoring program

Marshall

Lane

Nesius

et al. 2008

Environ Monit Assess

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Phytoplankton and water quality long term trends are presented from a 20-year monitoring program of Chesapeake Bay and several of its major tributaries. Increasing phytoplankton biomass and abundance are ongoing within this estuarine complex, with diatoms the dominant component, along with chlorophytes and cyanobacteria as sub-dominant contributors in the tidal freshwater and oligohaline regions. Diatoms, dinoflagellates, and cryptomonads are among the major flora downstream in the tributaries and within the Chesapeake Bay. Water quality conditions within the three tributaries have remained rather stable over this time period; while there are long term trends of reduced nutrients, increasing bottom oxygen, and decreasing water clarity for the lower Chesapeake Bay. Of note is an increasing trend of cyanobacteria biomass at 12 of the 13 stations monitored at tributary and Chesapeake Bay stations, plus the presence of 37 potentially harmful taxa reported for these waters. However, the overall status of the phytoplankton populations is presently favorable, in that it is mainly represented and dominated by taxa suitable as a major food and oxygen source within this ecosystem. Although potentially harmful taxa are present, they have not at this time exerted profound impact to the region, or replaced the diatom populations in overall dominance.

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Section: Introductionmentioning

confidence: 99%

Assessment and significance of phytoplankton species composition within Chesapeake Bay and Virginia tributaries through a long-term monitoring program

Marshall

Lane

Nesius

et al. 2008

Environ Monit Assess

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“…It was observed in the sub-bottom sediments of the Szczecin Lagoon by Andrén (1999), Bąk et al (2001) and Bąk (2004), as well as commonly recorded in the Baltic Sea (Hällfors 2004) and worldwide (Sabater 1990, Hakansson & Bailey-Watts 1993, Stoermer et al 1996, Marshall et al 2006, Nemes et al 2008.…”

Section: Discussionmentioning

confidence: 79%

Diatoms as indicators of eutrophication in the SW part of the Gulf of Gdańsk, the Baltic Sea

Leśniewska

Witak

2011

Oceanological and Hydrobiological Studies

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The aim of this study was to reconstruct paleoenvironmental changes of the SW part of the Gulf of Gdańsk. Three subbottom sedimentary cores were analyzed with respect to diatom flora. Post-Littorina Sea assemblages were noticed in the lower parts of the cores, whilst the present-day eutrophication of the gulf was evidenced in their superficial sediments, with high abundance of so-called 'anthropogenic assemblage' taxa. Shifts in the species composition might have been caused by intensified nutrient load, increasing organic matter concentrations and possible silica limitation.

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“…Seasonal blooms of nanoplanktonic cryptomonads (< 20 µm) are common in polyhaline and mesohaline estuarine areas (e.g. MARSHALL et al, 2006). This group is favored by high turbidity (e.g.…”

Section: Discussionmentioning

confidence: 99%

Influence of river discharge on phytoplankton structure and nutrient concentrations in four tropical semiarid estuaries

2016

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This study evaluated changes in phytoplankton and nutrients after an increase in river discharge in four estuaries of northeastern Brazil. Samples were taken during a markedly freshwater-deprived period (Nov/2010, dry season), and during a rainy season (May/2011). While two estuaries are located in urban areas (Ceará -CE and Cocó -CO), the others are markedly freshwater-deprived (Pacoti -PAC and Pirangi -PIR). Our findings indicate that increased freshwater had opposing effects on estuaries impacted by anthropogenic discharges (CO, CE and PIR) compared with the other, less impacted (PAC). In CO and CE, the freshwater flow during the rainy period had a nutrient diluting effect and controlled phytoplankton blooms. In PIR, only phosphorus and inorganic nitrogen decreased in the rainy season. In contrast, an increase of all nutrients was observed in PAC, and of TN in PIR, followed by an increase in phytoplankton biomass. In the rainy season, eutrophic freshwater species dominated in all the estuaries. In the dry season, blooms of Cryptomonas/Rhodomonas and Synechocystis aquatilis were, respectively, observed in CE and CO. Also in the dry season, PAC and PIR had a predominance of marine species under a condition of hypersalinity. Canonical correspondence analysis suggested the variation observed for salinity, silica, and TN are the main driver of phytoplankton structure. AbstrAct

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Phytoplankton assemblages associated with water quality and salinity regions in Chesapeake Bay, USA

Cited by 85 publications

References 12 publications

Assessment and significance of phytoplankton species composition within Chesapeake Bay and Virginia tributaries through a long-term monitoring program

Assessment and significance of phytoplankton species composition within Chesapeake Bay and Virginia tributaries through a long-term monitoring program

Diatoms as indicators of eutrophication in the SW part of the Gulf of Gdańsk, the Baltic Sea

Influence of river discharge on phytoplankton structure and nutrient concentrations in four tropical semiarid estuaries

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