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2013 Annual Report July 1, 2012 Through June 30, 2013, Virginia Institute Of Marine Science Jan 2013

2013 Annual Report July 1, 2012 Through June 30, 2013, Virginia Institute Of Marine Science

VIMS Annual Reports

No abstract provided.


Abundance, Structure And Function Of Zooplankton-Associated Bacterial Communities Within The York River, Va, Samantha L. Bickel Jan 2013

Abundance, Structure And Function Of Zooplankton-Associated Bacterial Communities Within The York River, Va, Samantha L. Bickel

Dissertations, Theses, and Masters Projects

Mesozooplankton function as microbial microhabitats and can support concentrations of bacteria orders of magnitude higher than in the surrounding water. These zooplankton-associated bacteria can have much higher production rates than their free-living counterparts. Portions of the zooplankton microhabitat may also be anoxic and provide refuge for anaerobic bacteria and their associated processes within the oxygenated water column. Despite their common presence in the marine environment, zooplankton-associated bacteria are largely ignored by microbial ecologists and zooplankton ecologists alike. Consequently, factors which influence zooplanktonassociated bacterial abundance, community composition and function, and how zooplankton-associated bacteria compare to free-living bacteria are not well known. …


Migratory And Within-Estuary Behaviors Of Adult Summer Flounder (Paralichthys Dentatus) In A Lagoon System Of The Southern Mid-Atlantic Bight, Karen M. Capossela, Mary C. Fabrizio, Richard Brill Jan 2013

Migratory And Within-Estuary Behaviors Of Adult Summer Flounder (Paralichthys Dentatus) In A Lagoon System Of The Southern Mid-Atlantic Bight, Karen M. Capossela, Mary C. Fabrizio, Richard Brill

VIMS Articles

We monitored the movements of 45 adult Summer Flounder (Paralichthys dentatus) between June 2007 and July 2008 through the use of passive acoustic telemetry to elucidate migratory and within-estuary behaviors in a lagoon system of the southern mid-Atlantic Bight. Between 8 June and 10 October 2007, fish resided primarily in the deeper (>3 m) regions of the system and exhibited low levels of large-scale (100s of meters) activity. Mean residence time within this estuarine lagoon system was conservatively estimated to be 130 days (range: 18-223 days), which is 1.5 times longer than the residence time previously reported for Summer …


Patterns And Drivers Of The Demersal Fish Community Of Chesapeake Bay, Andre Buchheister, Christopher F. Bonzek, James Gartland, Robert J. Latour Jan 2013

Patterns And Drivers Of The Demersal Fish Community Of Chesapeake Bay, Andre Buchheister, Christopher F. Bonzek, James Gartland, Robert J. Latour

VIMS Articles

Large-scale research on the environmental, biological, and anthropogenic drivers of fish distributions, abundances, and community structure can identify patterns and trends within systems, provide mechanistic insight into ecosystem functioning, and contribute to ecosystembased fisheries management. This study synthesized 10 yr of extensive fisheries-independent bottom trawl data (2002 to 2011) to evaluate drivers of demersal fish community structure in Chesapeake Bay, the largest estuary in the United States. Changes in community composition were assessed using constrained correspondence analysis. Also, aggregate community metrics (species richness, Simpson diversity, and catch-per-unit-effort [CPUE] of species groups) were modeled using generalized additive models. Five species (Atlantic …


A Conceptual Framework For Restoration Of Threatened Plants: The Effective Model Of American Chestnut (Castanea Dentata) Reintroduction, Douglass F. Jacobs, Harmony J. Dalgleish, Harmony J. Dalgleish, C. Dana Nelson Jan 2013

A Conceptual Framework For Restoration Of Threatened Plants: The Effective Model Of American Chestnut (Castanea Dentata) Reintroduction, Douglass F. Jacobs, Harmony J. Dalgleish, Harmony J. Dalgleish, C. Dana Nelson

Arts & Sciences Articles

We propose a conceptual framework for restoration of threatened plant species that encourages integration of technological, ecological, and social spheres. A sphere encompasses ideas relevant to restoration and the people working within similar areas of influence or expertise. Increased capacity within a sphere and a higher degree of coalescing among spheres predict a greater probability of successful restoration. We illustrate this with Castanea dentata, a foundation forest tree in North America that was annihilated by an introduced pathogen; the species is a model that effectively merges biotechnology, reintroduction biology, and restoration ecology. Because of C. dentata's ecological and social importance, …