Community Metabolism and Energy Transfer in the Chesapeake Bay Turbidity Maximum in 2007 and 2008

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dc.contributor.advisorHood, Raleigh R.en_US
dc.contributor.authorLee, Dong-Yoonen_US
dc.contributor.departmentMarine-Estuarine-Environmental Sciencesen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2010-10-07T05:47:54Z
dc.date.available2010-10-07T05:47:54Z
dc.date.issued2010en_US
dc.description.abstractThe estuarine turbidity maximum (ETM) is a zone of elevated organic matter concentrations and it is an important habitat for bacteria, zooplankton, and early-life-stages of fish. In an effort to identify the key mechanisms controlling production, we measured plankton community metabolism on a series of high-resolution spatial surveys in the upper Chesapeake Bay. The spatial patterns of metabolism revealed the highest primary production and community respiration rates downstream of the ETM region, and net heterotrophy in winter and spring. Also, strong correlations between plankton community metabolism and phytoplankton pigment concentrations, including chlorophyll-a and dinoflagellate indicating pigment peridinin, were observed. These correlations suggest that mixotrophic dinoflagellates were key organisms linking detrital and algal organic matter to higher trophic levels. It is hypothesized that the physiological advantages of mixotrophic dinoflagellates (i.e., autotrophic, heterotrophic) combined with the physical conditions in the ETM which enhance the quantity and quality of organic matter give rise to the high secondary production in the upper Chesapeake Bay.en_US
dc.identifier.urihttp://hdl.handle.net/1903/10839
dc.subject.pqcontrolledBiology, Oceanographyen_US
dc.subject.pquncontrolledChesapeake Bayen_US
dc.subject.pquncontrolledestuarine turbidity maximumen_US
dc.subject.pquncontrollednet ecosystem metabolismen_US
dc.subject.pquncontrolledplankton food weben_US
dc.subject.pquncontrolledprimary productionen_US
dc.subject.pquncontrolledrespirationen_US
dc.titleCommunity Metabolism and Energy Transfer in the Chesapeake Bay Turbidity Maximum in 2007 and 2008en_US
dc.typeThesisen_US

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