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Articles 1 - 30 of 109
Full-Text Articles in Life Sciences
Evaluation Of Color Imagery And Direct Referencing For Mapping Submersed Aquatic Vegetation In Chesapeake Bay - Final Report, David J. Wilcox, R J. Orth, Jennifer R. Whiting, Anna K. Kenne, Amy L. Owens, Leah S. Nagy
Evaluation Of Color Imagery And Direct Referencing For Mapping Submersed Aquatic Vegetation In Chesapeake Bay - Final Report, David J. Wilcox, R J. Orth, Jennifer R. Whiting, Anna K. Kenne, Amy L. Owens, Leah S. Nagy
Reports
The VIMS Annual Submersed Aquatic Vegetation (SAV) Monitoring Program has used black and white aerial photography to map SAV in Chesapeake Bay each year from 1984 to the present, with the exception of 1988. In 2008, VIMS initiated a pilot project to address two potential enhancements identified by a recent external program review: color film and direct referencing technology. Simultaneous color and black and white imagery was captured for three regions. In addition, GPS/inertial mapping unit (IMU) direct referencing data was acquired for two of the regions.
Recruitment, Substrate Quality And Standing Stock Monitoring In Support Of Noaa-Acoa Oyster Restoration Projects In The Great Wicomico, Rappahannock, Piankatank And Lynnhaven River Basins, 2004-2006 : Supplementary Materials, Mark Luckenbach, Paige G. Ross
Recruitment, Substrate Quality And Standing Stock Monitoring In Support Of Noaa-Acoa Oyster Restoration Projects In The Great Wicomico, Rappahannock, Piankatank And Lynnhaven River Basins, 2004-2006 : Supplementary Materials, Mark Luckenbach, Paige G. Ross
Reports
Many factors affect the success of oyster restoration efforts. This supplemental report details the VIMS effort under this NOAA-funded program to monitor some of those factors in the Great Wicomico, Rappahannock, Piankatank and Lynnhaven Rivers. Specifically, it details monitoring of (1) oyster settlement at two reefs in each of those tributaries from May to November from 2004 – 2006, along with additional widespread recruitment monitoring in the Lynnhaven River in 2005 & 2006, (2) substrate condition on the same eight reefs during spring, summer and fall of 2004 – 2006, (3) oyster abundance on Shell Bar reef in the Great …
Status Of The Major Oyster Diseases In Virginia 2006-2008 A Summary Of The Annual Oyster Disease Monitoring Program, Ryan Carnegie, Eugene M. Burreson
Status Of The Major Oyster Diseases In Virginia 2006-2008 A Summary Of The Annual Oyster Disease Monitoring Program, Ryan Carnegie, Eugene M. Burreson
Reports
Fall Survey sampling revealed P. marinus levels to be generally normal to high in Virginia tributaries. By 2007 P. marinus was present on every oyster reef sampled, and by the end of the 2006-2008 period the parasite was probably causing some mortality throughout Virginia waters. Data for H. nelsoni are still incomplete for 2006/7 because of funding limitations, but in 2008 H. nelsoni was observed at 17 of 31 sampled reefs, a marked expansion in distribution since 2003/4. A significant MSX disease outbreak occurred in the Great Wicomico River in 2008, as a mild winter and a long period of …
Estimating Relative Abundance Of Young-Of-Year American Eel, Anguilla Rostrata, In The Virginia Tributaries Of Chesapeake Bay (Spring 2009), Troy D. Tuckey, Mary C. Fabrizio
Estimating Relative Abundance Of Young-Of-Year American Eel, Anguilla Rostrata, In The Virginia Tributaries Of Chesapeake Bay (Spring 2009), Troy D. Tuckey, Mary C. Fabrizio
Reports
The Atlantic States Marine Fisheries Commission (ASMFC) adopted the Interstate Fishery Management Plan (FMP) for the American eel in November 1999. The FMP focuses on increasing coastal states’ efforts to collect American eel data through both fishery-dependent and fishery-independent studies. Consequently, member jurisdictions agreed to implement an annual survey for young-of-year (YOY) American eels. The survey is intended to “…characterize trends in annual recruitment of the YOY eels over time [to produce a] qualitative appraisal of the annual recruitment of American eel to the U.S. Atlantic Coast” (ASMFC 2000). The development of these surveys began in 2000 with full implementation …
Nutrient Enrichment And Food Web Composition Affect Ecosystem Metabolism In An Experimental Seagrass Habitat, Amanda C. Spivak, Elizabeth A. Canuel, J. Emment Duffy, J. Paul Richardson
Nutrient Enrichment And Food Web Composition Affect Ecosystem Metabolism In An Experimental Seagrass Habitat, Amanda C. Spivak, Elizabeth A. Canuel, J. Emment Duffy, J. Paul Richardson
VIMS Articles
Food web composition and resource levels can influence ecosystem properties such as productivity and elemental cycles. In particular, herbivores occupy a central place in food webs as the species richness and composition of this trophic level may simultaneously influence the transmission of resource and predator effects to higher and lower trophic levels, respectively. Yet, these interactions are poorly understood.
First Records Of Hypleurochilus Geminatus And Centropristis Philadelphica From Chesapeake Bay, Aimee D. Halvorson
First Records Of Hypleurochilus Geminatus And Centropristis Philadelphica From Chesapeake Bay, Aimee D. Halvorson
VIMS Articles
During the fall of 2007, Centropristis philadelphica (rock seabass) and Hypleurochilus geminatus (crested blenny) were collected from Chesapeake Bay. These captures are significant as they represent the first substantiated record of C. philadelphica from Chesapeake Bay and only the second and third validated records of H. geminatus. Additionally, the first record of H. geminatus from Chesapeake Bay was only recently recognized since the specimen had been previously misidentified as Parablennius marmoreus (seaweed blenny). The collection of seven individuals of H. geminatus in 2007, from two locations, indicates that the species may be resident within the Chesapeake Bay estuary.
Sand Dune And Beaches In Virginia: Science And Management, Center For Coastal Resources Management, Virginia Institute Of Marine Science
Sand Dune And Beaches In Virginia: Science And Management, Center For Coastal Resources Management, Virginia Institute Of Marine Science
Reports
Rivers & Coast is a periodic publication of the Center for Coastal Resources Management, Virginia Institute of Marine Science. The goal of Rivers & Coast is to keep readers well informed of current scientific understanding behind key environmental issues related to watershed rivers and coastal ecosystems of the Chesapeake Bay.
Evolving Guidance For Tidal Wetlands Management, Center For Coastal Resources Management, Virginia Institute Of Marine Science
Evolving Guidance For Tidal Wetlands Management, Center For Coastal Resources Management, Virginia Institute Of Marine Science
Reports
Rivers & Coast is a periodic publication of the Center for Coastal Resources Management, Virginia Institute of Marine Science. The goal of Rivers & Coast is to keep readers well informed of current scientific understanding behind key environmental issues related to watershed rivers and coastal ecosystems of the Chesapeake Bay.
Water Quality Conditions And Restoration Of Submerged Aquatic Vegetation (Sav) In The Tidal Freshwater James River, 2008, Ken Moore, Betty Berry Neikirk, Erin C. Shields, David Parrish
Water Quality Conditions And Restoration Of Submerged Aquatic Vegetation (Sav) In The Tidal Freshwater James River, 2008, Ken Moore, Betty Berry Neikirk, Erin C. Shields, David Parrish
Reports
In 2008, wild celery (Vallisneria americana), water stargrass (Heteranthera dubia) and hydrilla (Hydrilla verticilata) shoots were transplanted into shallow water sites in the Hopewell region of the tidal James River and sampled for survivorship and growth throughout the SA V growing season. Water quality sampling was conducted at bi-weekly intervals throughout the year for water column nutrients, chlorophyll a, suspended solids, water transparency and other chemical and physical constituents important for SA V growth. Continuous water quality sampling was also conducted along the James River from the mouth of the Chickahominy River to the upstream limits of tidal water at …
Final Report An Assessment Of Sea Scallop Abundance And Distribution In Selected Closed Areas: Georges Bank Area Ii And The Delmarva Closed Area, David Rudders, William D. Dupaul
Final Report An Assessment Of Sea Scallop Abundance And Distribution In Selected Closed Areas: Georges Bank Area Ii And The Delmarva Closed Area, David Rudders, William D. Dupaul
Reports
No abstract provided.
Evaluating Recruitment Of American Eel, Anguilla Rostrata, In The Potomac River (Spring 2009), Troy D. Tuckey, Mary C. Fabrizio
Evaluating Recruitment Of American Eel, Anguilla Rostrata, In The Potomac River (Spring 2009), Troy D. Tuckey, Mary C. Fabrizio
Reports
The Atlantic States Marine Fisheries Commission (ASMFC) adopted the Interstate Fishery Management Plan (FMP) for the American eel in November 1999. The FMP focuses on increasing coastal states’ efforts to collect American eel data through both fishery-dependent and fishery-independent studies. Consequently, member jurisdictions agreed to implement an annual survey for young of year (YOY) American eels. The survey is intended to “…characterize trends in annual recruitment of the YOY eels over time [to produce a] qualitative appraisal of the annual recruitment of American eel to the U.S. Atlantic Coast” (ASMFC 2000). The development of these surveys began in 2000 with …
Distribution, Habitat Characteristics, Prey Abundance And Diet Of Surf Scoters (Melanitta Perspicillata) And Long-Tailed Ducks (Clangula Hyemalis) In Polyhaline Wintering Habitats In The Mid-Atlantic Region: A Comparison Of Shallow Coastal Lagoons And Chesapeake Bay Environs, Paige G. Ross, Mark W. Luckenbach
Distribution, Habitat Characteristics, Prey Abundance And Diet Of Surf Scoters (Melanitta Perspicillata) And Long-Tailed Ducks (Clangula Hyemalis) In Polyhaline Wintering Habitats In The Mid-Atlantic Region: A Comparison Of Shallow Coastal Lagoons And Chesapeake Bay Environs, Paige G. Ross, Mark W. Luckenbach
Reports
To the best of our knowledge there are no published data on sea duck winter habitat use in the higher salinity portion of the lower Chesapeake Bay or in adjacent coastal bays along the Atlantic margin of the Delmarva (Delaware, Maryland, Virginia) peninsula. Within these regions both SUSC and LTDU have been observed in shallow water environments (Ross, pers. obs.), yet little is known about their habitat use or feeding habits in these areas. Importantly, these two adjacent areas, which are separated by as little as 20 km, differ in several key environmental components.
In this study we documented the …
Northeast Area Monitoring And Assessment Program Final Report 2005-2009, Christopher F. Bonzek, James Gartland, J. David Lange Jr., Robert J. Latour
Northeast Area Monitoring And Assessment Program Final Report 2005-2009, Christopher F. Bonzek, James Gartland, J. David Lange Jr., Robert J. Latour
Reports
No abstract provided.
Abstracts Of Technical Papers Presented At The 101st Annual Meeting National Shellfisheries Association Savannah, Georgia March 22–26, 2009, National Shellfisheries Association
Abstracts Of Technical Papers Presented At The 101st Annual Meeting National Shellfisheries Association Savannah, Georgia March 22–26, 2009, National Shellfisheries Association
VIMS Articles
No abstract provided.
2009 Annual Report Estimating Relative Juvenile Abundance Of Ecologically Important Finfish In The Virginia Portion Of Chesapeake Bay, Troy D. Tuckey, Mary C. Fabrizio
2009 Annual Report Estimating Relative Juvenile Abundance Of Ecologically Important Finfish In The Virginia Portion Of Chesapeake Bay, Troy D. Tuckey, Mary C. Fabrizio
Reports
No abstract provided.
Identification And Assessment Of Water Quality Problems In Mill Dam Creek And Dey Cove Tributaries Of Lynnhaven, Virginia Beach, Mac Sisson, Harry V. Wang, W. G. Reay, Yueping Li
Identification And Assessment Of Water Quality Problems In Mill Dam Creek And Dey Cove Tributaries Of Lynnhaven, Virginia Beach, Mac Sisson, Harry V. Wang, W. G. Reay, Yueping Li
Reports
No abstract provided.
Idiopathic Lesions And Visual Deficits In The American Lobster (Homarus Americanus) From Long Island Sound, Ny, Christopher R. Magel, Jeffrey D. Shields, Richard Brill
Idiopathic Lesions And Visual Deficits In The American Lobster (Homarus Americanus) From Long Island Sound, Ny, Christopher R. Magel, Jeffrey D. Shields, Richard Brill
VIMS Articles
In 1999, a mass mortality of the American lobster (Homarus americanus) occurred in western Long Island Sound (WLIS). Although the etiology of this event remains unknown, bottom water temperature, hypoxia, heavy metal poisoning, and pesticides are potential causal factors. Lobsters from WLIS continue to display signs of morbidity, including lethargy and cloudy grey eyes that contain idiopathic lesions. As the effect of these lesions on lobster vision is unknown, we used electroretinography (ERG) to document changes in visual function in lobsters from WLIS, while using histology to quantify the extent of physical damage. Seventy-three percent of lobsters from WLIS showed …
Estimating Relative Abundance Of Young Of Year American Eel, Anguilla Rostrata, In The Virginia Tributaries Of Chesapeake Bay (Spring 2008), Troy D. Tuckey, Mary C. Fabrizio
Estimating Relative Abundance Of Young Of Year American Eel, Anguilla Rostrata, In The Virginia Tributaries Of Chesapeake Bay (Spring 2008), Troy D. Tuckey, Mary C. Fabrizio
Reports
The Atlantic States Marine Fisheries Commission (ASMFC) adopted the Interstate Fishery Management Plan (FMP) for the American eel in November 1999. The FMP focuses on increasing coastal states’ efforts to collect American eel data through both fishery-dependent and fishery-independent studies. Consequently, member jurisdictions agreed to implement an annual survey for young-of-year (YOY) American eels. The survey is intended to “…characterize trends in annual recruitment of the YOY eels over time [to produce a] qualitative appraisal of the annual recruitment of American eel to the U.S. Atlantic Coast” (ASMFC 2000). The development of these surveys began in 2000 with full implementation …
Palatability And Chemical Defenses Of Sponges From The Western Antarctic Peninsula, Kevin Peters, Charles D. Amsler, James B. Mcclinotck, Rob W.M. Van Soest, Bill J. Baker
Palatability And Chemical Defenses Of Sponges From The Western Antarctic Peninsula, Kevin Peters, Charles D. Amsler, James B. Mcclinotck, Rob W.M. Van Soest, Bill J. Baker
Richard Bland Faculty Works
No abstract provided.
Regional Workshop On Cownose Ray Issues Identifying Research And Extension Needs, Virginia Sea Grant Marine Advisory Program
Regional Workshop On Cownose Ray Issues Identifying Research And Extension Needs, Virginia Sea Grant Marine Advisory Program
Reports
No abstract provided.
Northeast Area Monitoring And Assessment Program (Neamap) Data Collection And Analysis In Support Of Single And Multispecies Stock Assessments In The Mid-Atlantic: Northeast Area Monitoring And Assessment Program Near Shore Trawl Program, Christopher F. Bonzek, James Gartland, J. David Lange, Robert J. Latour
Northeast Area Monitoring And Assessment Program (Neamap) Data Collection And Analysis In Support Of Single And Multispecies Stock Assessments In The Mid-Atlantic: Northeast Area Monitoring And Assessment Program Near Shore Trawl Program, Christopher F. Bonzek, James Gartland, J. David Lange, Robert J. Latour
Reports
Concerns regarding the status of fishery-independent data collection from continental shelf waters between Cape Hatteras, North Carolina and the U.S. / Canadian border led the Atlantic States Marine Fisheries Commission’s (ASMFC) Management and Science Committee (MSC) to draft a resolution in 1997 calling for the formation of the Northeast Area Monitoring and Assessment Program (NEAMAP) (ASMFC 2002). NEAMAP is a cooperative state-federal program modeled after the Southeast Area Monitoring and Assessment Program (SEAMAP), which has been coordinating fishery-independent data collection south of Cape Hatteras since the mid-1980s (Rester 2001). The four main goals of this new program directly address the …
Accelerating Loss Of Seagrasses Across The Globe Threatens Coastal Ecosystems, Michelle Waycott, Carlos M. Duarte, Tim J. Carruthers, Robert J. Orth, Wc Dennison, Suzanne Olyarnik, Ainsley Calladine, James W. Fourqurean, Kl Heck, A. Randall Hughes, Gary A. Kendrick, W. Judson Kenworthy, Frederick T. Short, Susan L. Williams
Accelerating Loss Of Seagrasses Across The Globe Threatens Coastal Ecosystems, Michelle Waycott, Carlos M. Duarte, Tim J. Carruthers, Robert J. Orth, Wc Dennison, Suzanne Olyarnik, Ainsley Calladine, James W. Fourqurean, Kl Heck, A. Randall Hughes, Gary A. Kendrick, W. Judson Kenworthy, Frederick T. Short, Susan L. Williams
VIMS Articles
Coastal ecosystems and the services they provide are adversely affected by a wide variety of human activities. In particular, seagrass meadows are negatively affected by impacts accruing from the billion or more people who live within 50 km of them. Seagrass meadows provide important ecosystem services, including an estimated $1.9 trillion per year in the form of nutrient cycling; an order of magnitude enhancement of coral reef fish productivity; a habitat for thousands of fish, bird, and invertebrate species; and a major food source for endangered dugong, manatee, and green turtle. Although individual impacts from coastal development, degraded water quality, …
Final Report - 2008 Data Collection And Analysis In Support Of Single And Multispecies Stock Assessments In Chesapeake Bay: The Chesapeake Bay Multispecies Monitoring And Assessment Program, Christopher F. Bonzek, James Gartland, Raemarie A. Johnson, Robert J. Latour
Final Report - 2008 Data Collection And Analysis In Support Of Single And Multispecies Stock Assessments In Chesapeake Bay: The Chesapeake Bay Multispecies Monitoring And Assessment Program, Christopher F. Bonzek, James Gartland, Raemarie A. Johnson, Robert J. Latour
Reports
Historically, fisheries management has been based on the results of single‐species stock assessment models that focus on the interplay between exploitation level and sustainability. There currently exists a suite of standard and accepted analytical frameworks (e.g., virtual population analysis (VPA), biomass dynamic production modeling, delay difference models, etc.) for assessing the stocks, projecting future stock size, evaluating recovery schedules and rebuilding strategies for overfished stocks, setting allowable catches, and estimating fishing mortality or exploitation rates. A variety of methods also exist to integrate the biological system and the fisheries resource system, thereby enabling the evaluation of alternative management strategies on …
Virginia Shellfish Aquaculture Situation And Outlook Report : Results Of The 2008 Virginia Shellfish Aquaculture Crop Reporting Survey, Thomas J. Murray, Michael J. Oesterling
Virginia Shellfish Aquaculture Situation And Outlook Report : Results Of The 2008 Virginia Shellfish Aquaculture Crop Reporting Survey, Thomas J. Murray, Michael J. Oesterling
Reports
Recent growth of the shellfish aquaculture industry in Virginia has added significant value to the state’s seafood marketplace. Today, watermen continue to harvest both hard clams and oysters from the state’s public resources, albeit at diminished rates. At the same time, Virginia’s watermen-farmers are providing growing quantities of additional quality shellfish to consumers. Following the lead of the hard clam industry, there has been a significant transition to intensive aquaculture of native oysters in recent years. The once extensive oyster planting has disappeared primarily as a result of endemic oyster diseases and increasing wildlife predation of seed oysters. In its …
Monitoring Relative Abundance Of American Shad In Virginia Rivers 2008 Annual Report, John E. Olney, Brian Watkins
Monitoring Relative Abundance Of American Shad In Virginia Rivers 2008 Annual Report, John E. Olney, Brian Watkins
Reports
Concern about the decline in landings of American shad (Alosa sapidissima) along the Atlantic coast prompted the development of an interstate fisheries management plan (FMP) under the auspices of the Atlantic States Marine Fisheries Management Program (AS
Abundance And Distribution Of Sea Scallops And Yellowtail Flounder During The 2008 Vims/Industry Cooperative Survey Of Georges Bank Closed Area Ii, William D. Dupaul, Kelli Milleville Wright, David Rudders
Abundance And Distribution Of Sea Scallops And Yellowtail Flounder During The 2008 Vims/Industry Cooperative Survey Of Georges Bank Closed Area Ii, William D. Dupaul, Kelli Milleville Wright, David Rudders
Reports
No abstract provided.
Marine Resource Bulletin Vol. 41, No. 1, Virginia Sea Grant, Virginia Institute Of Marine Science
Marine Resource Bulletin Vol. 41, No. 1, Virginia Sea Grant, Virginia Institute Of Marine Science
Virginia Marine Resource Bulletin
In This Issue
Forecasting the Rising Tide 2
Coastal Virginia is one of the most vulnerable areas in the country to sea-level rise. With help from Sea Grant, VIMS researchers are helping Virginia communities predict and prepare for the increasingly frequent floods that climate change and rising seas will bring.
Trabajadores 6
The new workforce in seafood processing is a growing population of seasonal migrant workers—almost all of them hispanic. Sea Grant is helping these workers and the foods they process stay safe by providing specialized on-the-job training in Spanish.
Sowing the Seeds 10
A technique called spat-on-shell is promising …
A Molecular Phylogeny Of The Remoras And Their Relatives, Kn Gray, Jan Mcdowell, Bb Collette, Je Graves
A Molecular Phylogeny Of The Remoras And Their Relatives, Kn Gray, Jan Mcdowell, Bb Collette, Je Graves
VIMS Articles
The Echeneoidea comprise three families of cosmopolitan tropical/subtropical marine fishes: the Echeneidae (remoras), Coryphaenidae (dolphin fishes), and Rachycentridae (cobia). Complete nucleotide sequences from the mitochondrial 12S rRNA, 16S rRNA, protein-coding ND2, and nuclear ITS-1 gene regions were used to reconstruct the phylogenetic history of these fishes. Parsimony, maximum likelihood, and Bayesian analyses of combined data sets resolved trees of similar topology. Congruent with evolutionary hypotheses based on larval morphology, a monophyletic Rachycentridae + Coryphaenidae was resolved with high support. Within a monophyletic Echeneidae, the subfamilies Echeneinae and Remorinae were monophyletic. In agreement with recent morphological analyses, the genus Remora was …
Diversity Has Stronger Top-Down Than Bottom-Up Effects On Decomposition, Ds Srivastava, Bj Cardinale, Al Downing, Je Duffy, Et Al
Diversity Has Stronger Top-Down Than Bottom-Up Effects On Decomposition, Ds Srivastava, Bj Cardinale, Al Downing, Je Duffy, Et Al
VIMS Articles
The flow of energy and nutrients between trophic levels is affected by both the trophic structure of food webs and the diversity of species within trophic levels. However, the combined effects of trophic structure and diversity on trophic transfer remain largely unknown. Here we ask whether changes in consumer diversity have the same effect as changes in resource diversity on rates of resource consumption. We address this question by focusing on consumer-resource dynamics for the ecologically important process of decomposition. This study compares the top-down effect of consumer (detritivore) diversity on the consumption of dead organic matter (decomposition) with the …
Northeast Area Monitoring And Assessment Program (Neamap) Mid-Atlantic Nearshore Trawl Survey: Data Collection And Analysis In Support Of Single And Multispecies Stock Assessments And Management Progress Report: Fall 2008 Survey Data Summary, Christopher F. Bonzek, James Gartland, J. David Lange, Robert J. Latour
Northeast Area Monitoring And Assessment Program (Neamap) Mid-Atlantic Nearshore Trawl Survey: Data Collection And Analysis In Support Of Single And Multispecies Stock Assessments And Management Progress Report: Fall 2008 Survey Data Summary, Christopher F. Bonzek, James Gartland, J. David Lange, Robert J. Latour
Reports
Concerns regarding the status of fishery-independent data collection from the continental shelf waters between Cape Hatteras, North Carolina and the U.S. / Canadian border led the Atlantic States Marine Fisheries Commission’s (ASMFC) Management and Science Committee (MSC) to draft a resolution in 1997 calling for the formation the Northeast Area Monitoring and Assessment Program (NEAMAP) (ASMFC 2002). NEAMAP is a cooperative state-federal program modeled after the Southeast Area Monitoring and Assessment Program (SEAMAP), which had been coordinating fishery-independent data collection south of Cape Hatteras since the mid-1980s (Rester 2001). The four main goals of this new program directly address the …