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Ecosystem Services Related To Oyster Restoration, Ld Coen, Rochelle Brumbaugh, D Bushek, R Grizzle, Mark Luckenbach, Et Al Jun 2007

Ecosystem Services Related To Oyster Restoration, Ld Coen, Rochelle Brumbaugh, D Bushek, R Grizzle, Mark Luckenbach, Et Al

VIMS Articles

The importance of restoring filter-feeders, such as the Eastern oyster Crassostrea virginica, to mitigate the effects of eutrophication (e.g. in Chesapeake Bay) is currently under debate. The argument that bivalve molluscs alone cannot control phytoplankton blooms and reduce hypoxia oversimplifies a more complex issue, namely that ecosystem engineering species make manifold contributions to ecosystem services. Although further discussion and research leading to a more complete understanding is required, oysters and other molluscs (e.g. mussels) in estuarine ecosystems provide services far beyond the mere top-down control of phytoplankton blooms, such as (1) seston filtration, (2) benthic–pelagic coupling, (3) creation of refugia …


Effects Of Oyster Population Restoration Strategies On Phytoplankton Biomass In Chesapeake Bay: A Flexible Modeling Approach, Rs Fulford, Dl Brietburg, Rie Newell, Wm Kemp, Mw Luckenbach Apr 2007

Effects Of Oyster Population Restoration Strategies On Phytoplankton Biomass In Chesapeake Bay: A Flexible Modeling Approach, Rs Fulford, Dl Brietburg, Rie Newell, Wm Kemp, Mw Luckenbach

VIMS Articles

Cultural eutrophication in estuaries and other coastal systems has increased over the last 50 yr. Some recently proposed strategies to reverse this trend have included the restoration of bivalve suspension feeders as an ecological tool for reducing phytoplankton biomass. The ecological benefits accruing from such bivalve restoration will be dependent on the characteristics of the estuary, as well as how restoration is implemented. We developed a filtration model to estimate the effect of bivalve restoration on the rate of phytoplankton removal over a range of spatial and temporal scales and used it to compare alternate restoration strategies for the eastern …


Predation Of Cockles (Cerastoderma Edule) By The Whelk (Buccinum Undatum) Under Laboratory Conditions, Jws Scolding, Ca Richardson, Mw Luckenbach Jan 2007

Predation Of Cockles (Cerastoderma Edule) By The Whelk (Buccinum Undatum) Under Laboratory Conditions, Jws Scolding, Ca Richardson, Mw Luckenbach

VIMS Articles

The feeding rate and behaviour of whelks (Buccinum undatum) offered cockles (Cerastoderma edule) in laboratory experiments were examined. When presented with cockles in a range of sizes (10–40 mm), 14 B. undatum (34.6–88.3 mm), held individually in aquaria, consumed a wide size range of cockles. Small whelks (<40 >mm) consumed cockles (<23 >mm), whereas large whelks, (>60 mm) ate a greater number of larger cockles (>30 mm) and a wider size range of cockles (12–40 mm) than smaller whelks. The majority (90%) of the shells of the predated cockles were undamaged and the few …