Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- Research and Technical Reports (9)
- Fisheries Science Peer-Reviewed Articles (8)
- Biological Sciences Peer-Reviewed Articles (6)
- Physical Sciences Peer-Reviewed Articles (4)
- Special Reports in Applied Marine Science and Ocean Engineering (SRAMSOE) (4)
-
- Aquatic Health Sciences Peer-Reviewed Articles (3)
- Fisheries Science Reports (3)
- Virginia (3)
- Chesapeake Bay (2)
- Ecology (2)
- Amphipods; biodiversity; complementarity; diversity; ecosystem function; grazers; herbivory; macroalgae (1)
- Annual Awards (1)
- Annual Awards Ceremony (1)
- Aquaculture; Crassostrea Virginica; Eastern Oyster; Mtdna; Restoration; Rflp (1)
- BLACK CARBON; ATMOSPHERIC AEROSOLS; CHEMICAL-COMPOSITION; UNITED-STATES; PARTICULATE MATTER; HUMIC SUBSTANCES; CHESAPEAKE BAY; FULVIC-ACIDS; ESI-MS; QUANTIFICATION (1)
- CBNERR Publications (1)
- CCRM Peer Reviewed Articles (1)
- Climate variability; Dermochelys coriacea; ENSO; gelatinous zooplankton; global warming; jellyfish; leatherback sea turtles (1)
- Coastal development; fish; nekton; Chesapeake Bay; shallow water habitats; ecological threshold; shoreline alteration; bulkhead; biotic integrity (1)
- Construtction (1)
- Crassostrea Ariakensis; Bonamia; Salinity; Persistence; Transmission; Experimental; Introduction; Suminoe Oyster (1)
- Crassostrea Oysters; Species Identification; Its-1; Coi; Pcr/Rflp (1)
- Eastern Oyster; Crassostrea Virginica; James River; Age-At-Length; Jamestown; Chesapeake Bay (1)
- Environmental Assessment (1)
- Environmental stress models; food web; hypoxia; predation; predator-prey; Macoma balthica (1)
- Fellowships (1)
- Fish tagging; fish populations; Virginia (1)
- Gelatinous zooplankton; coastal upwelling; euphausiids; California current; scyphozoa; Aurelia; Chrysaora; phacellophora (1)
- Heterotrophic protists; algae; essential fatty acids; nutrient upgrading; docosahexaenoic acid; eicosapentaenoic acid; phytoplankton-heterotrophic protist interface (1)
- Human Impacts (1)
- Publication
- Publication Type
Articles 31 - 45 of 45
Full-Text Articles in Life Sciences
Estimation Of Juvenile Striped Bass Relative Abundance In The Virginia Portion Of Chesapeake Bay, January 2007-December 2007 : Annual Progress Report, Amanda H. Hewitt, Leonard S. Machut, Mary C. Fabrizio
Estimation Of Juvenile Striped Bass Relative Abundance In The Virginia Portion Of Chesapeake Bay, January 2007-December 2007 : Annual Progress Report, Amanda H. Hewitt, Leonard S. Machut, Mary C. Fabrizio
Reports
The primary objective of the Virginia Institute of Marine Science juvenile striped bass survey is to monitor the relative annual recruitment success of juvenile striped bass in the major Virginia nursery areas of lower Chesapeake Bay. The U.S. Fish and Wildlife Service initially funded the survey from 1967 to 1973. After a hiatus ending in 1980, funds were provided by the National Marine Fisheries Service under the Emergency Striped Bass Study program. Commencing with the 1988 annual survey, the work was jointly supported by Wallop-Breaux funds (Sport Fish Restoration Act) administered through the U.S. Fish and Wildlife Service and the …
Habitat Selection By Juvenile Striped Bass In Lower Chesapeake Bay Tributaries : Inferences From Occupancy Models, David A. Hewitt, Mary C. Fabrizio, Amanda H. Hewitt, Julia K. Ellis
Habitat Selection By Juvenile Striped Bass In Lower Chesapeake Bay Tributaries : Inferences From Occupancy Models, David A. Hewitt, Mary C. Fabrizio, Amanda H. Hewitt, Julia K. Ellis
Reports
No abstract provided.
Preliminary Assessment Of Nonpoint Source Fecal Coliform Loading And Flushing Capability In The Back Bay, Virginia, Mac Sisson, Harry V. Wang, Jian Shen, Tao Shen
Preliminary Assessment Of Nonpoint Source Fecal Coliform Loading And Flushing Capability In The Back Bay, Virginia, Mac Sisson, Harry V. Wang, Jian Shen, Tao Shen
Reports
No abstract provided.
The Status Of Virginia's Public Oyster Resource 2007, Melissa Southworth, Juliana Harding, Roger L. Mann
The Status Of Virginia's Public Oyster Resource 2007, Melissa Southworth, Juliana Harding, Roger L. Mann
Reports
This report summarizes data collected during 2007 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 2007, John A. Lucy, Lewis Gillingham
Virginia Game Fish Tagging Program Annual Report 2007, John A. Lucy, Lewis Gillingham
Reports
Initiated in 1995, the Virginia Game Fish Tagging Program (VGFTP) database is comprised of tagged fish records, and corresponding recaptured fish records. These records are primarily generated through contributed efforts of a dedicated corps of trained marine anglers targeting only a select number of target species. The recaptured fish records are the result of observant individuals noticing the tags in live or freshly-boxed/shipped fish. Recapture reports originate from a mix of sources, including marine anglers, commercial fishers, workers in fish packinghouses, wholesale and retail sellers of fish, and NOAA Fisheries observers on coastal trawl boats.
Bottom-Up And Top-Down Controls On Sedimentary Ecosystem Functioning In A Seagrass Habitat, Amanda C. Spivak
Bottom-Up And Top-Down Controls On Sedimentary Ecosystem Functioning In A Seagrass Habitat, Amanda C. Spivak
Dissertations, Theses, and Masters Projects
Coastal seagrass ecosystems are complex habitats that are increasingly influenced by human perturbations. Disturbances that affect the strength of bottom-up (i.e. resource availability) and top-down (i.e. consumer) controls may also influence biomass distribution between trophic levels, sediment biogeochemistry, and seagrass ecosystem metabolism. Here, I experimentally tested how top-down and bottom-up perturbations interact with community structure (diversity, food chain length of epibenthic consumers) to alter sediment biogeochemistry and ecosystem metabolism in an experimental eelgrass (Zostera marina ) system. My data indicated that resource availability influenced SOM composition and ecosystem metabolism. Light availability tended to be a stronger determinant of SOM composition …
Landscape-Level Impacts Of Shoreline Development On Chesapeake Bay Benthos And Their Predators, Rochelle D. Seitz, Amanda S. Lawless
Landscape-Level Impacts Of Shoreline Development On Chesapeake Bay Benthos And Their Predators, Rochelle D. Seitz, Amanda S. Lawless
VIMS Books and Book Chapters
Within the coastal zone, waterfront development has caused severe loss of shallow-water habitats such as salt marshes and seagrass beds. Little is known about the impact of habitat degradation and ecological value of subtidal shallow-water habitats, despite their prevalence. In coastal habitats, bivalves are dominant benthic organisms that can comprise over 50% of benthic prey biomass and are indicative of benthic production. We examined the effects of shoreline alteration in shallow habitats by contrasting the benthos of the subtidal areas adjacent to natural marsh, riprap, and bulkhead shorelines in three Chesapeake Bay subestuaries that differ in the level of shoreline …
Interspecific Interactions In Oyster Reef Communities: The Effect Of Established Fauna On Oyster Larval Recruitment, Brian B. Barnes
Interspecific Interactions In Oyster Reef Communities: The Effect Of Established Fauna On Oyster Larval Recruitment, Brian B. Barnes
Dissertations, Theses, and Masters Projects
The behaviors of oyster larvae are difficult to monitor or experimentally manipulate, especially in field conditions. As a result, little is known of the fate of oysters in the larval portion of their life cycle, prior to recruitment. At the transition from pelagic larvae to benthic adults, larvae are likely to come into contact with many invertebrates resident on oyster reefs. Of these, fouling epifauna are generally believed to reduce the settlement of interspecific larvae through competitive exclusion and predation. Studies of these interactions, however, often utilize artificial settlement panels, which can exhibit different recruitment patterns to those observed on …
Natural Mortality Of Blue Crab: Estimation And Influence On Population Dynamics, David A. Hewitt
Natural Mortality Of Blue Crab: Estimation And Influence On Population Dynamics, David A. Hewitt
Dissertations, Theses, and Masters Projects
The blue crab Callinectes sapidus supports one of the most important fisheries in the Chesapeake Bay and is the leading contributor to blue crab landings in the United States. Assessment and management of blue crab stocks has been hampered by a lack of estimates of natural mortality rates, a key parameter in assessment models. In Chapter 2, we demonstrate that the approach used for estimating natural mortality that had been used in past assessments was flawed, and provide justification for a superior alternative. In Chapter 3, we synthesize our current understanding of natural mortality rates in adult blue crab and …
Impacts Of Gelatinous Zooplankton On Dissolved Organic Matter Cycling And Bacterioplankton Communities In The York River Estuary, Robert Howard Condon
Impacts Of Gelatinous Zooplankton On Dissolved Organic Matter Cycling And Bacterioplankton Communities In The York River Estuary, Robert Howard Condon
Dissertations, Theses, and Masters Projects
Large gelatinous zooplankton (GZ) blooms of lobate ctenophores, Mnemiopsis leidyi, and scyphomedusae, Chrysaora quinquecirrha , occur throughout Chesapeake Bay and its tributaries. The mechanisms of GZ bloom formation, and the roles GZ blooms play in dissolved organic matter (DOM) and carbon (C) cycling are not fully understood. During 2003--2006, I conducted laboratory experiments and field surveys in the lower York River to determine factors controlling timing and magnitude of GZ blooms, and to evaluate their effects on C cycling. Highest biomass of M. leidyi occurred in early summer (May-June) and in late winter. Peaks in ctenophore biomass in the mesohaline …
Effects Of Shoreline Development And Oyster Reefs On Benthic Communities In Lynnhaven, Virginia, Amanda Sue Lawless
Effects Of Shoreline Development And Oyster Reefs On Benthic Communities In Lynnhaven, Virginia, Amanda Sue Lawless
Dissertations, Theses, and Masters Projects
Shoreline hardening and construction of restoration oyster reefs are occurring at rapid rates throughout Chesapeake Bay and little research has been conducted to determine whether installment of a hardened shoreline and oyster reef placement has an effect on the surrounding benthic infaunal communities. I investigated the effects of shoreline development and oyster reefs on benthic communities in Lynnhaven, Virginia. Throughout Lynnhaven, I determined the effects of shoreline type (natural marsh, oyster reef, rip-rap and bulkhead), sediment grain size, Total Organic Carbon/Total Nitrogen (TOC/TN) of the sediment, and predation (caging study) on density, biomass, and diversity of benthic infauna. An information-theoretic …
Zooplankton Community Structure In A Cyclonic And Mode-Water Eddy In The Sargasso Sea, Bethany Rose Eden
Zooplankton Community Structure In A Cyclonic And Mode-Water Eddy In The Sargasso Sea, Bethany Rose Eden
Dissertations, Theses, and Masters Projects
Recent evidence suggests that mesoscale eddies are an important mechanism for supplying nutrients to the surface waters of oligotrophic gyres. However, little is known about the biological response to these physical perturbations. Because mesozooplankton play a key role in food-web interactions and the flux of carbon and other elements from surface waters, changes in mesozooplankton community structure can affect biogeochemical cycling. During the summers of 2004 and 2005, respectively, we followed the development of a cyclonic eddy and an anti-cyclonic mode-water eddy in the Sargasso Sea. Zooplankton tows were conducted across both eddies using a Multiple Opening and Closing Net …
Intra-Oral Flow Patterns And Speeds In A Suspension-Feeding Fish With Gill Rakers Removed Versus Intact, Jennifer S. Smith, S. Laurie Sanderson
Intra-Oral Flow Patterns And Speeds In A Suspension-Feeding Fish With Gill Rakers Removed Versus Intact, Jennifer S. Smith, S. Laurie Sanderson
Arts & Sciences Articles
Oreochromis aureus, a species of tilapia, is a suspension-feeding fish that employs a pumping action to bring water into its mouth for filtering.To address questions about water flow inside the mouth, we used a microthermistor flow probe to determine the speed of intra-oral flow during suspension feeding in this species before and after surgical removal of gill rakers. Synchronization with high-speed external videotapes of the fish and high-speed video endoscopy inside the oropharyngeal cavity allowed the first correlation of oral actions with intra-oral flow patterns and speeds during feeding. This analysis established the occurrence of a brief reversal of …
Stable Isotope Dynamics In Summer Flounder Tissues, With Application To Dietary Assessments In Chesapeake Bay, Andre Buchheister
Stable Isotope Dynamics In Summer Flounder Tissues, With Application To Dietary Assessments In Chesapeake Bay, Andre Buchheister
Dissertations, Theses, and Masters Projects
Stable isotope techniques were applied to summer flounder, Paralichthys dentatus, in Chesapeake Bay to elucidate the relative importance of different prey groups on the growth and productivity of this species. Prior to field application, a laboratory diet-shift study was conducted to evaluate methodological assumptions and obtain necessary isotopic parameters. Specifically, the goals of the laboratory study were to 1) determine isotopic turnover rates and fractionations of δ13C and δ15N in liver, whole blood, and white muscle and 2) estimate the relative importance of growth and metabolic processes on isotopic turnover. Groups of captive juvenile summer flounder (130-255mm total length) were …
Community Dynamics In Submersed Aquatic Vegetation: Intermediate Consumers As Mediators Of Environmental Change, James G. Douglass
Community Dynamics In Submersed Aquatic Vegetation: Intermediate Consumers As Mediators Of Environmental Change, James G. Douglass
Dissertations, Theses, and Masters Projects
Natural ecosystems are strongly affected by changes in resource supply (bottom-up forces) and by changes in upper trophic levels (top-down forces). The extent to which these processes impact a system depends largely on the responses of organisms at middle trophic levels. In seagrass beds, a group of mid-level consumers known as mesograzers form a critical link in the chain of impact, connecting seagrass and epiphytic algae with predatory fishes and crustaceans. I observed dramatic seasonal and interannual changes in mesograzer abundance and species composition in eelgrass (Zostera marina) beds of lower Chesapeake Bay, Virginia, and endeavored to explain the top-down …