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Articles 1 - 30 of 35
Full-Text Articles in Life Sciences
End-Products Of Anaerobic Chitin Degradation By Salt-Marsh Bacteria As Substrates For Dissimilatory Sulfate Reduction And Methanogenesis, Jn Boyer
VIMS Articles
The anaerobic pathway of chitin decomposition by chitinoclastic bacteria was examined with an emphasis on end product coupling to other salt marsh bacteria. Actively growing chitinoclastic bacterial isolates produced primarily acetate, H2, and CO2 in broth culture. No sulfate-reducing or methanogenic isolates grew on chitin as sole carbon source or produced any measurable degradation products. Mixed cultures of chitin degraders with sulfate reducers resulted in positive sulfide production. Mixed cultures of chitin-degrading isolates with methanogens resulted in the production of CH4 with reductions in headspace CO2 and H2. The combination of all three metabolic types resulted in the simultaneous production …
Variable Functional Responses Of A Marine Predator In Dissimilar Homogeneous Microhabitats, Rn Lipcius, Anson Hines
Variable Functional Responses Of A Marine Predator In Dissimilar Homogeneous Microhabitats, Rn Lipcius, Anson Hines
VIMS Articles
Adult soft-shelled clams (Mya arenaria) persist at low densities in Chesapeake Bay sandy habitats despite Intense predation by blue crabs (Callinectes sapidus). Clam persistence may be a consequence of variation in blue crab foraging rates as a function of clam density and sediment composition. In laboratory aquaria, we measured the functional responses (prey consumption per predator as a function of prey density) of large blue crabs to six densities of adult soft-shelled clams buried at natural depths in two sediment types (mud and sand). Functional responses in sand and mud were differentiated statistically by analyses of(1) residuals and residual sums …
Survey Of Migratory Fishes In The Beaver Dam Creek, Sampled As Part Of A Reservoir Construction Study For Gloucester County Final Report, Frank J, Wojcik, Deane Estes
Survey Of Migratory Fishes In The Beaver Dam Creek, Sampled As Part Of A Reservoir Construction Study For Gloucester County Final Report, Frank J, Wojcik, Deane Estes
Reports
No abstract provided.
Status Of The Major Oyster Diseases In Virginia, Eugene M. Burreson
Status Of The Major Oyster Diseases In Virginia, Eugene M. Burreson
Reports
No abstract provided.
Water Quality In A Virginia Potomac Embayment: Belmont-Occoquan Bay, Yothin Unkulvasapaul, Paul V. Hyer, Albert Y. Kuo
Water Quality In A Virginia Potomac Embayment: Belmont-Occoquan Bay, Yothin Unkulvasapaul, Paul V. Hyer, Albert Y. Kuo
Reports
No abstract provided.
Handle With Care : Mid-Atlantic Marine Animals That Demand Your Respect, Jon Lucy
Handle With Care : Mid-Atlantic Marine Animals That Demand Your Respect, Jon Lucy
Reports
Generally speaking, the marine organisms found along middle Atlantic shores are not considered threatening to people. However, some of these animals can cause problems, either upon simple contact with the skin, as in the case of some jellyfish, or through careless handling. Larger inhabitants of coastal waters, such as stingrays and sharks, must always be treated with great respect because of the danger potential and their unpredictable nature. The following description of nuisance and potentially harmful organisms is presented to help coastal residents and visitors become more aware of how problems with such marine animals might develop, how they can …
Potential Effects Of The 1986 Drought On The Oyster Industry Of Virginia, Virginia Sea Grant Marine Advisory Program
Potential Effects Of The 1986 Drought On The Oyster Industry Of Virginia, Virginia Sea Grant Marine Advisory Program
Reports
No abstract provided.
A Preliminary Comparative Analysis Of Sea Scallop Harvest Pattern Between Dredge And Trawl Vessels, James E. Kirkley
A Preliminary Comparative Analysis Of Sea Scallop Harvest Pattern Between Dredge And Trawl Vessels, James E. Kirkley
Reports
No abstract provided.
A Survey Of The Temporary Easement For Construction Of The Proposed Bridge Over The Machipongo River, Roger Mann, James P. Whitcomb
A Survey Of The Temporary Easement For Construction Of The Proposed Bridge Over The Machipongo River, Roger Mann, James P. Whitcomb
Reports
On April 23 and 24, 1986 a survey was conducted by the Virginia Institute of Marine Science (VIMS) on the temporary easement (3.248 acres) for the construction of the proposed bridge over the Machipongo River in Accomack County, Virginia (Figure 1). The study was done at the request of the Virginia Department of Highways and Transportation, Suffolk, Virginia for Project 0182-001-102, RW-201.
The objective of this study was to determine the extent and value of the molluscan resource in· the temporary easement.
Status Of The 1985 Striped Bass Fisheries In Virginia After Implementation Of The 1985 Amendment Iii To The 1981 Asmfc Interstate Management Plan For Striped Bass, Herbert M. Austin
Status Of The 1985 Striped Bass Fisheries In Virginia After Implementation Of The 1985 Amendment Iii To The 1981 Asmfc Interstate Management Plan For Striped Bass, Herbert M. Austin
Reports
No abstract provided.
Dogfish Harvesting And Processing : An Examination Of Key Economic Factors In The Mid-Atlantic Region, Ron Grulich, William D. Dupaul
Dogfish Harvesting And Processing : An Examination Of Key Economic Factors In The Mid-Atlantic Region, Ron Grulich, William D. Dupaul
Reports
No abstract provided.
Testimony Before The Subcommittee On Fisheries And Wildlife Conservation And The Environment Of The Committee On Merchant Marine And Fisheries On H.R. 3358 Reauthorization Of The Athlantic Striped Bass Conservation Act And S.B. 1813 To Amern And Extend The Atlantic Striped Bass Conservation Act, Herbert M. Austin
Reports
No abstract provided.
The College Of William And Mary, School Of Marine Science, 1986-87 Program, College Of William And Mary, School Of Marine Science
The College Of William And Mary, School Of Marine Science, 1986-87 Program, College Of William And Mary, School Of Marine Science
Miscellaneous
Catalog for the Graduate program from the School of Marine Science at the College of William and Mary for the listed academic year.
Cooperative Agreement For Experimental Stocking Of Striped Bass In Virginia's Tidal Waters : Signing Ceremony, Virginia Institute Of Marine Science
Cooperative Agreement For Experimental Stocking Of Striped Bass In Virginia's Tidal Waters : Signing Ceremony, Virginia Institute Of Marine Science
Miscellaneous
Program brochure for the signing ceremony May 23, 1986. List of speakers.
Norfolk's Harborfest '86: A Tenth Anniversary Analysis, Jon A. Lucy, Eleanor A. Bochenek
Norfolk's Harborfest '86: A Tenth Anniversary Analysis, Jon A. Lucy, Eleanor A. Bochenek
Reports
No abstract provided.
Occurrence Of Some Parasites And A Commensal In The American Lobster, Homarus-Americanus, From The Mid-Atlantic Bight, Willard A. Van Engel, R. E. Harris Jr., D. E. Zwerner
Occurrence Of Some Parasites And A Commensal In The American Lobster, Homarus-Americanus, From The Mid-Atlantic Bight, Willard A. Van Engel, R. E. Harris Jr., D. E. Zwerner
VIMS Articles
No abstract provided.
Arctica Islandica (Linne) Larvae: Active Depth Regulators Or Passive Particles?, Roger L. Mann
Arctica Islandica (Linne) Larvae: Active Depth Regulators Or Passive Particles?, Roger L. Mann
VIMS Articles
The seasonal change in depth distribution of Arctica islandica (Linne) larvae at a station on the Southern New England Shelf for the period April-December 1981 is compared with the output of a numerical model designed to predict distribution in a scenario where active depth regulation predominates. Larvae in excess of 200 J.Lm length were present in the field in May at 1-30 m depth and, at depths of 20-40 m from late July through November. The majority of larvae captured in November were shelled veligers of 110 J.Lm length. Good agreement of the model with field data exists with respect …
The Public Oyster Bottoms In Virginia : An Overview Of Their Size, Location, And Productivity, Dexter S. Haven, James P. Whitcomb
The Public Oyster Bottoms In Virginia : An Overview Of Their Size, Location, And Productivity, Dexter S. Haven, James P. Whitcomb
VIMS Articles
The location size and extent of Virginia's public oyster grounds was determined using a long pole to probe the bottom , a towed sonic device that detected shell or oysters, and by sampling the bottom with patent tongs for shell and oyster density. Station location was determined using an electronic positioning system (Raydist® ). Bottoms were classed as oyster reefs, mud-shell or sand shell (productive or potentially productive). Areas having mud or sand or those in deep water over 30 ft. (9.1 m) were considered unproductive. Average oyster harvest for seed and market size oysters over the last ten years …
Peniagone-Leander New Species, An Abyssal Benthopelagic Sea-Cucumber (Echinodermata, Holothuroidea) From The Eastern Central Pacific-Ocean, Dl Pawson, Ej Foell
Peniagone-Leander New Species, An Abyssal Benthopelagic Sea-Cucumber (Echinodermata, Holothuroidea) From The Eastern Central Pacific-Ocean, Dl Pawson, Ej Foell
VIMS Articles
Peniagone leander. new species, differs from other Peniagone species in possessing the combination of: an ovoid body, lateral ridges defining right and left margins of body, anterior veil (velum) with four projections, two pairs of anterior dorsal projections posterior to velum, four pairs of posterior ventral tube feet. The reddish-brown body reaches a length of approximately 30 em. P. leander is the second species of the genus known to be benthopelagic. The species is fairly common where it occurs, dividing its time between actively swimming above the bottom and feeding on the sediment surface.
Observations On The Reproductive-Biology Of The Cownose Ray, Rhinoptera-Bonasus, In Chesapeake Bay, Joseph W. Smith, John Merriner
Observations On The Reproductive-Biology Of The Cownose Ray, Rhinoptera-Bonasus, In Chesapeake Bay, Joseph W. Smith, John Merriner
VIMS Articles
No abstract provided.
The Abundance And Distribution Of The Family Macrouridae (Pisces, Gadiformes) In The Norfolk Canyon Area, Robert W. Middleton, John Musick
The Abundance And Distribution Of The Family Macrouridae (Pisces, Gadiformes) In The Norfolk Canyon Area, Robert W. Middleton, John Musick
VIMS Articles
No abstract provided.
Geochemistry And Deposition Of Be-7 In River‐Estuarine And Coastal Waters, C. R. Olsen, I. L. Larsen, P. D. Lowry, N. H. Cutshall, Maynard Nichols
Geochemistry And Deposition Of Be-7 In River‐Estuarine And Coastal Waters, C. R. Olsen, I. L. Larsen, P. D. Lowry, N. H. Cutshall, Maynard Nichols
VIMS Articles
The atmospheric flux of cosmogenic Be-7 (53.3-day half-life) and the mode of ?Be deposition in river- estuarine and coastal environments have been examined. The atmospheric flux of ?Be commonly sup- ports inventories ranging from 1.0 to 2.0 pCi/cm 2 (1 pCi = 0.037 Bq). Beryllium 7 concentrations in water phase samples, collected across salinity gradients in several estuaries along the eastern coastline of the United States, range from 0.03 to 0.53 pCi/L and primarily reflect variations in Be-7supply and sorption kinetics. The major process controlling the concentration of Be-7 on estuarine suspended particles appears to be the length of time …
The Expansion Of America's Soft-Shell Crab Industry: A Sea Grant Success Story, Karen Mcdonald, William Dupaul
The Expansion Of America's Soft-Shell Crab Industry: A Sea Grant Success Story, Karen Mcdonald, William Dupaul
Reports
No abstract provided.
The York River: A Brief Review Of Its Physical, Chemical And Biological Characteristics, Michael E. Bender
The York River: A Brief Review Of Its Physical, Chemical And Biological Characteristics, Michael E. Bender
Reports
The purpose of this paper is to provide an overview of the physical, chemical and biological characteristics of the York River, Virginia. The river is formed by the confluence of the Mattaponi and Pamunkey rivers at West Point, Virginia. It is tidal over its entire length and flows to the western shore of Chesapeake Bay.
Enhancing The Value Of Commercial Fish Species Through Quality Control Procedures : An Integrated Approach For Mid-Atlantic Fisheries., Virginia Sea Grant Marine Advisory Program, Virginia Institute Of Marine Science
Enhancing The Value Of Commercial Fish Species Through Quality Control Procedures : An Integrated Approach For Mid-Atlantic Fisheries., Virginia Sea Grant Marine Advisory Program, Virginia Institute Of Marine Science
Reports
Poor quality has often been cited as a major obstacle to increased foreign and domestic sales of U.S. harvested fish. In a report on fisheries trade prepared for the 1984 New England Governors' Conference, the absence of quality standards, particularly for finfish, was cited as a major reason for diminished economic returns to fishermen (Background Paper on Fisheries Trade 1984). A subsequent study by the New England Fisheries Development Foundation (NEFDF) revealed a definite need for vessel operators and buyers to initiate quality control in order to effectively compete for world markets (Connors and Ostergard 1986). The need for procedural …
Oyster Shoal Survey - Fall 1986, James Whitcomb
Oyster Shoal Survey - Fall 1986, James Whitcomb
Reports
This report summarizes data collected during 1986 in the Virginia portion of the Chesapeake Bay. The report focuses on the fall oyster survey in Virginia.
The Assessment Of Commercial Fishing Effort In Virginia Annual Report 1986, Joice S. Davis, James C. Owens, William H. Kriete Jr., Joseph G. Loesch
The Assessment Of Commercial Fishing Effort In Virginia Annual Report 1986, Joice S. Davis, James C. Owens, William H. Kriete Jr., Joseph G. Loesch
Reports
This report summarizes the assessment of commercial fishing effort in Chesapeake Bay and its Virginia tributaries during the period October 1, 1985 through December 31, 1986. Objectives of this study were: 1. to assess pound net fishing effort in Chesapeake Bay, and in the James, York and Rappahannock rivers; and 2. to assess anchor, drift, and stake gill net fishing effort in the James, York and Rappahannock rivers.
Additionally, two months of data for pound nets and anchor, drift, and stake gill nets have been included in order that the cessation of the study period would occur at a natural …
Chesapeake Bay Research Initiatives At The Virginia Institute Of Marine Science Of The College Of William And Mary : Accomplishments For The 1984-1986 Biennium And Projected Activities For The 1986-1988 Biennium, Virginia Institute Of Marine Science
Chesapeake Bay Research Initiatives At The Virginia Institute Of Marine Science Of The College Of William And Mary : Accomplishments For The 1984-1986 Biennium And Projected Activities For The 1986-1988 Biennium, Virginia Institute Of Marine Science
Reports
This is the biennium report for the 1984-1986 Commonwealth's Chesapeake Bay Initiatives for Research. Funding thereby directed to the Virginia Institute of Marine Science allowed augmentation of the Institute's directed research program which is devoted to the conservation and preservation of the living marine resources of the Commonwealth. Specifically, the funds were directed towards three program areas: 1) Biological and River Circulation Studies for Revitalization of the James River Seed Oyster Beds; 2) Environmental Factors Controlling Critical Finfish Populations; and 3) Chemical Poisons in Virginia's Tidal Waters.
Study Of Alosa Stock Composition And Year-Class Strength In Virginia - Annual Report 1985, Joseph G. Loesch, William H. Kriete Jr., Roxanne P. Trapani
Study Of Alosa Stock Composition And Year-Class Strength In Virginia - Annual Report 1985, Joseph G. Loesch, William H. Kriete Jr., Roxanne P. Trapani
Reports
This presentation is the annual report for P. L. 89-304, AFC 13-2 project "Study of Alosa stock composition and year-class strength in Virginia," for the period 15 February 1985 to 14 February 1986. The fishes of concern were the alewife (Alosa pseudoharengus), American shad (A. sapidissima), and the blueback herring (A. aestivalis).
Chsac Working Group On Data Identification And Interpretation Data Set Inventory Request, Frank J. Wojcik
Chsac Working Group On Data Identification And Interpretation Data Set Inventory Request, Frank J. Wojcik
Reports
No abstract provided.