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Full-Text Articles in Life Sciences
Effects Of Dominance/Subordination, Encounter Site And Olfactory Cues On Behavior And Spatial Dynamics Of Male Peromyscus Leucopus Noveboracensis, Janet L. Norcross
Effects Of Dominance/Subordination, Encounter Site And Olfactory Cues On Behavior And Spatial Dynamics Of Male Peromyscus Leucopus Noveboracensis, Janet L. Norcross
Dissertations, Theses, and Masters Projects
No abstract provided.
The Feeding Ecology Of The Chesapeake Bay Ospreys And The Growth And Behavior Of Their Young, Peter Kleppinger Mclean
The Feeding Ecology Of The Chesapeake Bay Ospreys And The Growth And Behavior Of Their Young, Peter Kleppinger Mclean
Dissertations, Theses, and Masters Projects
No abstract provided.
Evidence For A Role Of The Gill In Osmotic Regulation In The Horseshoe Crab, Limulus Polyphemus Linnaeus, Susan Ann Jackson
Evidence For A Role Of The Gill In Osmotic Regulation In The Horseshoe Crab, Limulus Polyphemus Linnaeus, Susan Ann Jackson
Dissertations, Theses, and Masters Projects
No abstract provided.
Barn Owl Habitat And Prey Use In Agricultural Eastern Virginia, Charles Patrick Rosenburg
Barn Owl Habitat And Prey Use In Agricultural Eastern Virginia, Charles Patrick Rosenburg
Dissertations, Theses, and Masters Projects
No abstract provided.
Localization Of A Camp-Dependent Protein Kinase In Ovarian Mitochondria, William Jameson Roberts
Localization Of A Camp-Dependent Protein Kinase In Ovarian Mitochondria, William Jameson Roberts
Dissertations, Theses, and Masters Projects
No abstract provided.
Reproductive Ecology, Population Dynamics And Seasonal Movements Of The Hogchoker (Trinectes Maculatus), In The Elizabeth River, Virginia, Stephen M. Smith
Reproductive Ecology, Population Dynamics And Seasonal Movements Of The Hogchoker (Trinectes Maculatus), In The Elizabeth River, Virginia, Stephen M. Smith
Dissertations, Theses, and Masters Projects
No abstract provided.
Biological Review And Commercial Whelk Fisheries Analysis Of Busycon Carica With Comments On B Canaliculatum And B Contrarium In Virginia, Jane Dicosimo
Dissertations, Theses, and Masters Projects
No abstract provided.
The Role Of Picoplankton In Phytoplankton Dynamics Of A Temperate Coastal Plain Estuary, Robert Triau Ray
The Role Of Picoplankton In Phytoplankton Dynamics Of A Temperate Coastal Plain Estuary, Robert Triau Ray
Dissertations, Theses, and Masters Projects
No abstract provided.
Effects Of Food Ration Size On Bioaccumulation Of Kepone By Spot (Leiostomus Xanthurus) And Grass Shrimp (Palaemonetes Pugio) (Pharmacokinetics, Dietary Accumulation, Accelerated Test, Bioconcentration, Assimilation Efficiency), Daniel J. Fisher
Dissertations, Theses, and Masters Projects
Long-term bioaccumulation studies were conducted using ('14)C-Kepone and unlabeled Kepone to determine the significance of dietary accumulation to final Kepone body burdens in spot (Leiostomus xanthurus) and grass shrimp (Palaemonetes pugio). Both food (grass shrimp) and consumer organisms were exposed to aqueous Kepone concentrations of 0.04 (mu)g/l at 23�C for 16-19 days, followed by a 21-28 day clearance phase. Dietary and aqueous sources of Kepone were shown to be additive for both species. Dietary contributions of Kepone represented 9, 18 and 38% of the total Kepone body burden in spot fed contaminated food rations of 4, 8 and 20% mean …
Trophodynamics Of Estuarine (Salt Marsh) Heterotrophic Nanoplankton (Microbial Ecology, Salt Marsh Ecology, Choanoflagellates, Virginia), Alyce T. Fritz
Trophodynamics Of Estuarine (Salt Marsh) Heterotrophic Nanoplankton (Microbial Ecology, Salt Marsh Ecology, Choanoflagellates, Virginia), Alyce T. Fritz
Dissertations, Theses, and Masters Projects
Seasonal occurrence and activity of heterotrophic nanoflagellates (HNANO or heteroflagellates) and bacteria were studied in a sheltered brackish water embayment of Chesapeake Bay wetlands (Virginia, USA) over a three year period (1981 - 1984). Epifluorescence direct counts and Scanning and Transmission Electron Microscopy (SEM and TEM) techniques were used for the description of organisms, enumeration, and biomass determinations. Seasonal bacterial growth rates and growth and grazing rates of bactivorous HNANO were estimated using diffusion chambers equipped with Nuclepore polycarbonate membrane filters in natural salt marsh tidal pools. Environmental monitoring of nanoplankton populations revealed a seasonal pattern of bacterial abundances with …
The Seasonal And Diel Use By Juvenile And Adult Finfishes Of A Mesohaline Intertidal Creek On The York River, Virginia (Menidia Menidia, Fundulus Heteroclitus, Leiostomas Xanthuras, Brevoortia Tyrannus, Anchoa Mitchilli), Robert W. Middleton
Dissertations, Theses, and Masters Projects
An intertidal creek off the York River, Va. was sampled for juvenile and adult fishes during the spring, summer, and fall of 1981. Over 21,500 individuals of 14 species were collected using a block net technique. Ninety-eight percent of the total number was derived from five species which were, in order of abundance; Brevoortia tyrannus, Fundulus heteroclitus, Anchoa mitchilli, Leiostomus xanthurus, and Menidia menidia. Diel variations in abundance were indicated for A. mitchilli and M. menidia juveniles which were mostly captured at night and for M. menidia adults, L. xanthurus juveniles, and F. heteroclitus of all ages which were typically …
Estuarine Zooplankton Community Structure In Stratified And Well-Mixed Environments (York River, Virginia, Chesapeake Bay), James Edward Price
Estuarine Zooplankton Community Structure In Stratified And Well-Mixed Environments (York River, Virginia, Chesapeake Bay), James Edward Price
Dissertations, Theses, and Masters Projects
The community structure and vertical distribution patterns of mesozooplankton in the lower York River, Virginia were examined during August, 1978. Samples were collected in the upper and lower water strata before, during and after destratification of the water column due to tidal mixing. In the stratified pre-mixed water column, distinct zooplankton communities were identified above and below the pycnocline. Pronounced diurnal vertical migrations of Acartia tonsa (all stages) and Pseudodiaptomus coronatus were documented. During the well-mixed hydorgraphic regime, the previously identified communities were not as well defined. There was a greater homogeneity of species assemblages and less pronounced differentiation of …
The Community Metabolism And Nutrient Dynamics Of A Shoal Sediment In A Temperate Estuary, With Emphasis On Temporal Scales Of Variability (Sediment/Water Exchange, Euphotic, Chloraphyll-A, Virginia), William M. Rizzo
Dissertations, Theses, and Masters Projects
The oxygen metabolism and exchange of nutrients between sediment and water were studied on a submerged sandy shoal in the York River, Virginia from March to December 1983. Particular emphasis was placed on the variability in metabolic estimates over different time scales. Variation in oxygen metabolism was examined over the photoperiod, between successive sampling days, between tidal condition (mid-day high vs. low tide), and among seasons. Morning NP was significantly greater than afternoon NP over the study. Mean hourly NP and R were significantly different between successive days in 4 of 6 tests, and 2 of 6 tests respectively. R …
The Use Of Crab Meal As A Supplemental Food For Juvenile Hard Clams (Mercenaria Mercenaria), Patricia Lynn Duncan
The Use Of Crab Meal As A Supplemental Food For Juvenile Hard Clams (Mercenaria Mercenaria), Patricia Lynn Duncan
Dissertations, Theses, and Masters Projects
No abstract provided.
Vegetation Of Selected Dune Ridges And Marshes On The Eastern Shore Of Virginia: Community Structure And Relationship To Environmental Factors, Marian Vance Huq
Vegetation Of Selected Dune Ridges And Marshes On The Eastern Shore Of Virginia: Community Structure And Relationship To Environmental Factors, Marian Vance Huq
Dissertations, Theses, and Masters Projects
No abstract provided.