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Full-Text Articles in Life Sciences
Monitoring Relative Abundance Of American Shad In Virginia's Rivers Annual Report 1999, John E. Olney Sr., John M. Hoenig
Monitoring Relative Abundance Of American Shad In Virginia's Rivers Annual Report 1999, John E. Olney Sr., John M. Hoenig
Reports
A moratorium on the taking of American shad (Alosa sapidissima) in the Chesapeake Bay and its tributaries was established by the Virginia Marine Resources Commission (VMRC) beginning 1 January 1994. The prohibition applied to both recreational and commercial fishers. The moratorium was imposed at a time when commercial catch rates of American shad in Virginia's rivers were experiencing declines. Data from the commercial fishery were the best available for assessing the status of individual stocks. Catch-per-unit-effort (CPUE) data were compiled from logbooks that recorded landings by commercial fishermen using staked gill nets at various locations throughout the middle reaches of …
Restoration Of Submerged Aquatic Vegetation (Sav) In The Tidal Freshwater James River: Year 2, Ken Moore, Kevin Segerblom, Betty Neikirk, James Fishman
Restoration Of Submerged Aquatic Vegetation (Sav) In The Tidal Freshwater James River: Year 2, Ken Moore, Kevin Segerblom, Betty Neikirk, James Fishman
Reports
No abstract provided.
Restoration Of Submerged Aquatic Vegetation (Sav) In The Tidal Freshwater James River: 1999 Pilot Study, Ken Moore, R J. Orth, James Fishman
Restoration Of Submerged Aquatic Vegetation (Sav) In The Tidal Freshwater James River: 1999 Pilot Study, Ken Moore, R J. Orth, James Fishman
Reports
No abstract provided.
Basinsim 1.0 A Windows-Based Watershed Modeling Package, Ting Dai, Richard L. Wetzel, Tyler R.L. Christensen, E. Amy Lewis
Basinsim 1.0 A Windows-Based Watershed Modeling Package, Ting Dai, Richard L. Wetzel, Tyler R.L. Christensen, E. Amy Lewis
Reports
BasinSim 1.0 for Windows is the product of a NOAA Coastal Zone Management grant (through the Virginia Coastal Resources Management Program) awarded to Drs. Ting Dai, R. L. Wetzel, I. C. Anderson, and L. W. Haas at the Virginia Institute of Marine Science, College of William and Mary in 1998. Additional support has been provided for the development and testing of this package and production of this user’s guide by grants from Virginia’s Chesapeake Bay Local Assistance Department (CBLAD). BasinSim 1.0 is a desktop simulation system that predicts sediment and nutrient loads for small to mid-sized watersheds. The simulation system …
Feeding Habits Of Young-Of-Year Striped Bass, Morone Saxatilis, And White Perch, Morone Americana, In Lower James River, Va, Paul J. Rudershausen, Joseph G. Loesch
Feeding Habits Of Young-Of-Year Striped Bass, Morone Saxatilis, And White Perch, Morone Americana, In Lower James River, Va, Paul J. Rudershausen, Joseph G. Loesch
Virginia Journal of Science
A total of 188 young-of-year (YOY) striped bass, Morone saxatilis, and 199 YOY white perch, Morone americana, were collected by pushnet, seine and trawl during 24-hour periods from June through August, 1992 in lower James River, Virginia. The purpose was to identify prey and temporal and spatial feeding habits. Copepods were the most numerous prey of both species. Fishes and mysids comprised the largest volumetric percentage of diets of striped bass and white perch, respectively. Using an index of relative importance, leptodorids and copepods were the most important prey of striped bass and white perch, respectively. Both species …
Monitoring Relative Abundance Of American Shad In Virginia's Rivers Annual Report 1998, John E. Olney, John Hoenig
Monitoring Relative Abundance Of American Shad In Virginia's Rivers Annual Report 1998, John E. Olney, John Hoenig
Reports
A moratorium on the taking of American shad in the Chesapeake Bay and its tributaries was established by the Virginia Marine Resources Commission (VMRC) beginning 1 January 1994. The prohibition applied to both recreational and commercial fishers. The moratorium was imposed at a time when commercial catch rates of American shad in Virginia's rivers were experiencing declines. Data from the commercial fishery were the best available for assessing the status of individual stocks. Catch-per-unit-effort (CPUE) data were compiled from logbooks that recorded landings by commercial fishermen using staked gill nets at various locations throughout the middle reaches of the three …
Carbon Cycling In A Tidal Freshwater Marsh Ecosystem: A Carbon Gas Flux Study, Sc Neubauer, Wd Miller, Iris C. Anderson
Carbon Cycling In A Tidal Freshwater Marsh Ecosystem: A Carbon Gas Flux Study, Sc Neubauer, Wd Miller, Iris C. Anderson
VIMS Articles
A process-based carbon gas flux model was developed to calculate total macrophyte and microalgal production, and community and belowground respiration, for a Peltandra virginica dominated tidal freshwater marsh in Virginia. The model was based on measured field fluxes of CO2 and CH,, scaled to monthly and annual rates using empirically derived photosynthesis versus irradiance, and respiration versus temperature relationships. Because the gas exchange technique measures whole system gas fluxes and therefore includes turnover and seasonal translocation, estimates of total macrophyte production will be more accurate than those calculated from biomass harvests. One Limitation of the gas flux method is that …