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- Biological Sciences Peer-Reviewed Articles (9)
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- American eel--Virginia; Eel fisheries--Virginia (1)
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- Amphipods; Ampithoe longimana; community structure; competition; Cymadusa compta; Gammarus mucronatus; grazing; mesograzers; resource limitation; Zostera marina (1)
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- Armor vs. avoidance; bivalves; blue crab; Callinectes sapidus; density dependence; sigmoid functional response (1)
- Artificial eelgrass; blue crab; Callinectes sapidus; complexity; habitat fragmentation; landscape ecology (1)
- Biodiversity; community structure; epifauna; macroalgae; Zostera marina (1)
- Biodiversity; ecosystem function; eelgrass; Erichsonella attenuata; estuaries; functional redundancy; Gammarus mucronatus; grazing (1)
- Chesapeake Bay; Aquaculture; Species Introduction; Crassostrea Ariakensis; C. Virginica (1)
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- ESTUARY-ASSOCIATED SYNDROME; TOXIC PFIESTERIA; NORTH-CAROLINA; FISH BIOASSAY; SKIN ULCERS; PISCICIDA; DINOFLAGELLATE; EXPOSURE; COMPLEX; IDENTIFICATION (1)
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Articles 31 - 44 of 44
Full-Text Articles in Life Sciences
Species-Specific Impacts Of Grazing, Amphipods In An Eelgrass-Bed Community, Je Duffy, Am Harvilicz
Species-Specific Impacts Of Grazing, Amphipods In An Eelgrass-Bed Community, Je Duffy, Am Harvilicz
VIMS Articles
Small, grazing invertebrates often benefit seagrasses by cropping their epiphytic algal competitors. Yet predictive relations between grazer abundance and seagrass performance are elusive, in significant part because of poorly understood diversity in mesograzer feeding biology. We conducted experiments in eelgrass Zostera marina microcosms to explore how differences in feeding between 2 common grazing amphipod taxa affected accumulation and species composition of epiphytes on eelgrass, as well as amphipod population growth, competition and production, over a 4-week period in summer. Gammarus mucronatus and ampithoids (a mixture of Cymadusa compta and Ampithoe longimana) were stocked, singly and in combination, along with a …
Magnitude And Variability Of Benthic And Pelagic Metabolism In A Temperate Coastal Lagoon, Kj Mcglathery, Iris C. Anderson, Ac Tyler
Magnitude And Variability Of Benthic And Pelagic Metabolism In A Temperate Coastal Lagoon, Kj Mcglathery, Iris C. Anderson, Ac Tyler
VIMS Articles
In shallow coastal systems where most of the seafloor lies within the photic zone, benthic photoautotrophy is likely to play a key role in regulating carbon and nitrogen cycling. We measured dissolved inorganic carbon exchanges in seasonal microcosm incubations to determine the relative importance of benthic (with and without macroalgae) and water column metabolism at 3 sites located along a nutrient gradient in a coastal barrier-island lagoon on the eastern shore of Virginia. When coupled with data on in situ biomass, the incubations clearly indicated a seasonality in the dominance of primary producers at the sites, with benthic primary producers …
A Comparative Field Study Of Crassostrea Ariakensis (Fujita 1913) And Crassostrea Virginica (Gmelin 1791) In Relation To Salinity In Virginia, G. W. Calvo, Mark Luckenbach, Standish K. Allen Jr., E. M. Burreson
A Comparative Field Study Of Crassostrea Ariakensis (Fujita 1913) And Crassostrea Virginica (Gmelin 1791) In Relation To Salinity In Virginia, G. W. Calvo, Mark Luckenbach, Standish K. Allen Jr., E. M. Burreson
VIMS Articles
We examined survival, growth, and disease susceptibility of triploid Crassostrea ariakensis (= rivularis) and compared results with that of diploid Crassostrea virginica. Two hundred and fifty oysters (age = 2 yr, mean shell height = 60-64 mm) of each species were deployed at duplicate sites, (Chesapeake Bay, and the Atlantic Coast of Virginia) within low, medium, and high salinity regimes respectively (< 15%, 15-25%, > 25%). Over the course of the study, from June 1998 to September 1999, C. virginica exhibited low survival, modest growth and high disease susceptibility. In contrast, C. ariakensis exhibited high survival, high growth rate, and low disease susceptibility. …
Development And Verification Of A Model For The Population Dynamics Of The Protistan Parasite, Perkinsus Marinus, Within Its Host, The Eastern Oyster, Crassostrea Virginica, In Chesapeake Bay, Lmr Calvo, Rl Wetzel, Em Burreson
Development And Verification Of A Model For The Population Dynamics Of The Protistan Parasite, Perkinsus Marinus, Within Its Host, The Eastern Oyster, Crassostrea Virginica, In Chesapeake Bay, Lmr Calvo, Rl Wetzel, Em Burreson
VIMS Articles
A simulation model was developed to investigate the population dynamics of the protistan parasite, Perkinsus marinus, within its host, the eastern oyster, Crassostrea virginica. The main objective was to evaluate the relationship between P. marinus population dynamics and environmental conditions in order to predict the onset and termination of P. marinus epizootics in Chesapeake Bay oyster populations. Information derived from laboratory experiments and from direct field observations of P. marinus dynamics in the James River for the years 1990 to 1993 was utilized for model development. The individual-based model, which is driven by temperature and salinity, tracks the average within-host …
Nitrogen Cycling Through A Fringing Marsh-Aquifer Ecotone, Cr Tobias, Iris C. Anderson, Elizabeth A. Canuel, Sa Macko
Nitrogen Cycling Through A Fringing Marsh-Aquifer Ecotone, Cr Tobias, Iris C. Anderson, Elizabeth A. Canuel, Sa Macko
VIMS Articles
Fringing wetlands are critical components of estuarine systems, and subject to water fluxes from both watersheds and estuaries. To assess the effect of groundwater discharge on marsh nitrogen cycling, we measured N-cycling in sediments from a fringing mesohaline marsh in Virginia which receives a seasonal groundwater input. Mineralization, nitrification, potential denitrification (DNF), and potential dissimilatory nitrate reduction to ammonium (DNRA) rates were estimated along with porewater concentrations of oxygen, sulfide, and conductivity during high (May 1997) and low (October 1997) groundwater discharge. All N-cycling processes were confined to the upper 1 to 1.5 m of marsh, where organic matter and …
Swimming Mechanics And Behavior Of The Shallow-Water Brief Squid Lolliguncula Brevis, Ian K. Bartol, Mark R. Patterson, Roger L. Mann
Swimming Mechanics And Behavior Of The Shallow-Water Brief Squid Lolliguncula Brevis, Ian K. Bartol, Mark R. Patterson, Roger L. Mann
VIMS Articles
Although squid are among the most versatile swimmers and rely on a unique locomotor system, little is known about the swimming mechanics and behavior of most squid, especially those that swim at low speeds in inshore waters. Shallow-water brief squid Lolliguncula brevis, ranging in size from 1.8 to 8.9 cm in dorsal mantle length (DML), were placed in flumes and videotaped, and the data were analyzed using motion-analysis equipment. Flow visualization and force measurement experiments were also performed in water tunnels. Mean critical swimming speeds (Ucrit) ranged from 15.3 to 22.8 cm s–1 …
Efficacy Of Blue Crab Spawning Sanctuaries In Chesapeake Bay, Rochelle D. Seitz, Romauld N. Lipcius, William T. Stockhausen, Marcel M. Montane
Efficacy Of Blue Crab Spawning Sanctuaries In Chesapeake Bay, Rochelle D. Seitz, Romauld N. Lipcius, William T. Stockhausen, Marcel M. Montane
VIMS Books and Book Chapters
Sanctuaries can potentially protect a significant fraction of the spawning stock, and thereby sustain heavily exploited populations. Despite the worldwide use of marine and estuarine spawning sanctuaries, the effectiveness of such sanctuaries remains untested. We therefore attempted to quantify the effectiveness of the spawning sanctuaries for adult female blue crabs (Callinectes sapidus) in Chesapeake Bay. We used baywide winter dredge survey data to estimate the potential spawning stock prior to the major exploitation period, and summer trawl survey data to estimate spawning stock abundance within the Lower Bay Spawning Sanctuary and adjacent Bayside Eastern Shore Sanctuary during the reproductive period. …
A Deepwater Dispersal Corridor For Adult Female Blue Crabs In Chesapeake Bay, Romuald N. Lipcius, Rochelle D. Seitz, William J. Goldsborough, Marcel M. Montane, William T. Stockhausen
A Deepwater Dispersal Corridor For Adult Female Blue Crabs In Chesapeake Bay, Romuald N. Lipcius, Rochelle D. Seitz, William J. Goldsborough, Marcel M. Montane, William T. Stockhausen
VIMS Books and Book Chapters
In marine ecosystems, there is no empirical evidence for the utility of dispersal corridors in conservation, despite widespread migrations by mammals, fish, and invertebrates. We investigated the potential for a deepwater dispersal corridor (> 13 m depths) in protecting adult females of the blue crab, Callinectes sapidus, en route from shallow-water nursery and mating areas to the spawning sanctuary in lower Chesapeake Bay.
Estimation Of Juvenile Striped Bass Relative Abundance In The Virginia Portion Of Chesapeake Bay, January 2000-December 2000 : Annual Progress Report, Herbert M. Austin, A. Dean Estes, Donald M. Seaver
Estimation Of Juvenile Striped Bass Relative Abundance In The Virginia Portion Of Chesapeake Bay, January 2000-December 2000 : Annual Progress Report, Herbert M. Austin, A. Dean Estes, Donald M. Seaver
Reports
The Virginia Institute of Marine Science (VIMS) has conducted a juvenile striped bass seine survey from 1967 through 1973 and from 1980 through the present. The primary objective has been the monitoring of the relative annual recruitment success of juvenile striped bass in the spawning and nursery areas of Lower Chesapeake Bay. Initially (1967-1973), the survey was funded by the U.S. Fish and Wildlife Service and when reinstated in 1980 with funding from the National Marine Fisheries Service under the Emergency Striped Bass Study program. Commencing with the 1988 annual survey, support of the program has been jointly made through …
The Status Of Virginia's Public Oyster Resource 2000, Melissa Southworth, Juliana Harding, Roger L. Mann
The Status Of Virginia's Public Oyster Resource 2000, Melissa Southworth, Juliana Harding, Roger L. Mann
Reports
This report summarizes data collected during 2000 in the Virginia portion of the Chesapeake Bay. The report is composed of two parts, part one, oyster recruitment (shell string) in Virginia and part two, dredge survey of selected oyster bars in Virginia.
Virginia Game Fish Tagging Program Annual Report 2000, John A. Lucy, C.M. Bain Iii
Virginia Game Fish Tagging Program Annual Report 2000, John A. Lucy, C.M. Bain Iii
Reports
The Virginia Game Fish Tagging Program (VGFTP), in its sixth year during 2000, systematically trains and assists anglers in tagging a select number of species important to Virginia's marine recreational fishery and maintains the resulting tagging database. A cooperative project of the Virginia Marine Resources Commission and the Virginia Institute of Marine Science (VIMS), the program is primarily funded with revenues from Virginia's saltwater recreational fishing license funds (Recreational Fishing Development Fund). In addition, support for the program is provided by Virginia's Sea Grant Marine Advisory Program at VIMS.
Polychaete Key For Chesapeake Bay And Coastal Virginia, Aaron Bartholomew, Virginia Institute Of Marine Science
Polychaete Key For Chesapeake Bay And Coastal Virginia, Aaron Bartholomew, Virginia Institute Of Marine Science
Reports
Polychaetes are a class of annelid worms, generally marine, with more than 10,000 species. Common representatives include the lugworm (Arenicola marina) and the sandworm or clam worm Nereis. Polychaetes are important members of benthic ecosystems, serving as food for other organisms and playing a key role in mixing sediments. This key is designed to help identify polychaete species in Chesapeake Bay and coastal Virginia.
The Impact Of Marine Reserves On Exploited Species With Complex Life Histories: A Modeling Study Using The Caribbean Spiny Lobster In Exuma Sound, Bahamas, William T. Stockhausen
The Impact Of Marine Reserves On Exploited Species With Complex Life Histories: A Modeling Study Using The Caribbean Spiny Lobster In Exuma Sound, Bahamas, William T. Stockhausen
Dissertations, Theses, and Masters Projects
Most benthic invertebrates and reef-associated fish undergo a dispersive, planktonic larval stage prior to settlement and metamorphosis into the juvenile and adult stages. In some species, settlement may be decoupled from adult abundance at local spatial scales if hydrodynamic conditions or larval behavior do not promote local retention. Similarly, spatial variability in postsettlement mortality or secondary dispersal by juveniles and adults may decouple spatial patterns of adult abundance from those of settlement. as a consequence, spatial patterns of settlement and adult abundance may be functionally related in a complex fashion. Whether biotic/environmental factors control spatial patterns of abundance may have …
Morphological Variation Of Three Populations Of The Veined Rapa Whelk, Rapana Venosa, An Invasive Predatory Gastropod Species, Rebecca A. Green
Morphological Variation Of Three Populations Of The Veined Rapa Whelk, Rapana Venosa, An Invasive Predatory Gastropod Species, Rebecca A. Green
Dissertations, Theses, and Masters Projects
No abstract provided.