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Articles 1 - 10 of 10
Full-Text Articles in Physical Sciences and Mathematics
Effects Of Salinity And Nitrogen On The Distribution And Growth Of Phragmites Australis Along The Rappahannock River, Carmen Rebekah Packett
Effects Of Salinity And Nitrogen On The Distribution And Growth Of Phragmites Australis Along The Rappahannock River, Carmen Rebekah Packett
Dissertations, Theses, and Masters Projects
No abstract provided.
An Analysis Of Nitrate Contaminated Water In Cherry Valley, Adriana Hernandez-Romo
An Analysis Of Nitrate Contaminated Water In Cherry Valley, Adriana Hernandez-Romo
Theses Digitization Project
The purpose of this study was to evaluate the level of nitrate contamination in the water in Cherry Valley. It examines the theory that human effluent is the source of the nitrate and evaluates the role of politics in the nitrate issue.
Site Fidelity, Home Range, And Daily Movements Of White Perch, Morone Americana, And Striped Bass, Morone Saxatilis, In Two Small Tributaries Of The York River, Virginia, Patrick E. Mcgrath
Site Fidelity, Home Range, And Daily Movements Of White Perch, Morone Americana, And Striped Bass, Morone Saxatilis, In Two Small Tributaries Of The York River, Virginia, Patrick E. Mcgrath
Dissertations, Theses, and Masters Projects
Striped bass (Morone saxatilis) and white perch (M. americana) are two common species residing within Chesapeake Bay and its tributaries. These congeners are both commercially and recreationally important species. White perch are permanent residents in the Bay, while striped bass are only residents during the first few years of their life. During these initial years, striped bass co-occur with white perch. There is very little known about white perch and resident striped bass site fidelity and home range. This acoustic tagging study aims to examine site fidelity and home range of both species and determine if there is any spatial …
Description And Evaluation Of The United States Coastal Pelagic Longline Fishery Interactions With Target And Non-Target Species In The Western North Atlantic, David. Kerstetter
Description And Evaluation Of The United States Coastal Pelagic Longline Fishery Interactions With Target And Non-Target Species In The Western North Atlantic, David. Kerstetter
Dissertations, Theses, and Masters Projects
Eighty-five monitored sets were used to investigate the interactions of pelagic fishes with commercial pelagic longline gear in the western North Atlantic during the fall mixed species fishery north of Cape Hatteras, North Carolina, and the spring swordfish fishery in the southern Gulf of Mexico and northern Caribbean Sea. This dissertation incorporates four components: (1) direct analyses of longline gear behavior using small time-depth recorders, (2) comparisons of catch rates and mortality of all species caught on size 16/0 non-offset circle and size 9/0 straight-shank J-style hooks, including analyses of time-of-capture utilizing electronic hook time recorders, (3) an evaluation of …
Tidal Wetland Contributions To Fecal Coliform Loads In Shellfish Growing Waters By Analysis Of Model Prediction Discrepancy, Jie. Huang
Dissertations, Theses, and Masters Projects
Fecal contamination in estuaries has become an increasing concern worldwide. The use of wetlands for wastewater treatment has expanded due to their natural ability to improve water quality by removing suspended sediments, nutrients, and fecal bacteria. In general, most of the removal occurs through deposition and accumulation in the wetland substrate. This would suggest that wetlands are effective filters for fecal coliform transported from terrestrial environments to surface waters. It has also been hypothesized, however, that wetlands may be an intermittent source of fecal coliform in tidal systems as a result of wildlife deposition and /or accumulation from terrestrial sources. …
Investigation Of The Life History Of The Cownose Ray, Rhinoptera Bonasus (Mitchill 1815), Donna S. Grusha
Investigation Of The Life History Of The Cownose Ray, Rhinoptera Bonasus (Mitchill 1815), Donna S. Grusha
Dissertations, Theses, and Masters Projects
No abstract provided.
Nursery Delineation, Movement Patterns, And Migration Of The Sandbar Shark, Carcharhinus Plumbeus, In The Eastern Shore Of Virginia Coastal Bays And Lagoons, Christina L. Conrath
Nursery Delineation, Movement Patterns, And Migration Of The Sandbar Shark, Carcharhinus Plumbeus, In The Eastern Shore Of Virginia Coastal Bays And Lagoons, Christina L. Conrath
Dissertations, Theses, and Masters Projects
The identification and delineation of nursery areas and areas of aggregation of north Atlantic sharks has been identified as an important information need for future management efforts. The objectives of this project were to use a fishery-independent method to study the overwintering area of juvenile sandbar sharks, to spatially delineate the Eastern Shore nursery area, and to examine movement patterns and space use within this nursery area. Data from 21 satellite transmitters attached to large juvenile sandbar sharks revealed that these sharks primarily occurred off the outer banks of North Carolina, at deeper depths and colder water temperatures during the …
Estimation Of Annual And Semi-Annual Survival Of Adult Female Blue Crabs And Assessment Of The Effectiveness Of The Virginia Blue Crab Sanctuary Using Tag-Return Methodology, Debra M. Lambert
Dissertations, Theses, and Masters Projects
The blue crab fishery is the most valuable commercial fishery in Chesapeake Bay. The Chesapeake Bay stock recently experienced a period of overfishing, which has resulted in below average abundances, and the spawning stock has experienced an 84 % decline in biomass relative to levels in the late 1980s. The status of the stock is determined by comparing current estimates of mortality to biological reference points. Given the current focus on blue crab conservation, there is a need to obtain reliable, empirical estimates of survival to compare to the biological reference points. A tagging program was initiated on the terminally-molted, …
Physiological Ecology Of The Cultured Hard Clam, Mercenaria Mercenaria: A Case Study In Cherrystone Inlet, Virginia, Elizabeth Darrow Condon
Physiological Ecology Of The Cultured Hard Clam, Mercenaria Mercenaria: A Case Study In Cherrystone Inlet, Virginia, Elizabeth Darrow Condon
Dissertations, Theses, and Masters Projects
No abstract provided.
Characteristics Of Vesicomyid Clams And Their Environment At The Blake Ridge Cold Seep, Taylor Perrine Heyl
Characteristics Of Vesicomyid Clams And Their Environment At The Blake Ridge Cold Seep, Taylor Perrine Heyl
Dissertations, Theses, and Masters Projects
No abstract provided.