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Showing 1 to 20 of 241 for “"Chesapeake Bay"”.
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Tidal Circulation in Chesapeake Bay
… examination of the tidal circulation of Chesapeake Bay and its major tributaries. Tide and current data, which were observed in Chesapeake Bay by the National Ocean Service during the period from 1972 to 1983, are analyzed and used to construct charts that describe the tide and tidal …
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Investigations of Phytoplankton Diversity in Chesapeake Bay
… and their relation to the algal community of Chesapeake Bay were analyzed using data collected over a 25 year period (1985-2009).</p> <p>The phytoplankton community of Chesapeake Bay, containing 1480 taxa was characterized as one of high richness and low evenness, with a single species …
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Living museum of the bay : Chesapeake Bay Aquarium
… grandeur of a precious yet fragile estuary, the Chesapeake Bay. The thesis proposes by in creasing public awareness of the fragile tenure with nature, modern industrial society is the context, an industrial land scape is transformed into a Living/interpretive aquarium .
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Thermal History of the Chesapeake Bay Impact Crater
… exist within the syn-impact sediment of the Chesapeake Bay impact crater, including an unexplained brine. This brine may be the result of phase-separation of seawater that occurred within the syn-impact sediments as underlying deformed and possibly melted basement rock cooled following …
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Urban Tree Canopy Assessments in the Chesapeake Bay Watershed
… been conducted for numerous localities in the Chesapeake Bay watershed (CBW) as part of a strategy to enhance urban tree canopy (UTC) and reduce stormwater runoff that pollutes the Chesapeake Bay. Our research examined how local governments employ these UTCAs and identified barriers to and …
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Neoliberalism, the Environmental Protection Agency, and the Chesapeake Bay
… many of the nation's waterways, including the Chesapeake Bay. Through a case study, this project demonstrates how the neoliberal influences impacting the Environmental Protection Agency has resonated in its policies, like in the abilities of the Clean Water Act to sufficiently clean-up the …
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Feeding Ecology of Invasive Catfishes in Chesapeake Bay Subestuaries
… drainages. This includes subestuaries of the Chesapeake Bay, where their feeding ecology and potential impact on native species was largely unknown. We collected stomach contents from 16,110 Blue Catfish at 698 sites in three large subestuaries of the Chesapeake Bay (James, York, Rappahannock …
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Environmental ethics and the oyster of the Chesapeake Bay
… of a foreign species of oyster to the Chesapeake Bay, show that the Green perspective can, if adopted, be a valuable aid to solving current environmental problems.
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Microzooplankton Dynamics in Lower Chesapeake Bay and Its Major Tributaries
… and biomass at 14 stations located within Chesapeake Bay and four rivers. Microzooplankton are defined as those heterotrophic organisms which range from 20 to 200 $\mu$m in size, and in this study were mainly composed of copepod nauplii, rotifers, and ciliates. Ciliates were the most …
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SPATIAL AND TEMPORAL DYNAMICS OF THE CHESAPEAKE BAY SEA NETTLE
The jellyfish Chrysaora chesapeakei forms large summer blooms in Chesapeake Bay, and has substantial ecological and economic impacts on local ecosystems. Limited information on this species is mostly due to difficulties collecting spatial information on jellyfish in dynamic coastal ecosystems. …
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Essays on Water Quality Management for the Chesapeake Bay Watershed
Water quality management for agricultural production is a complicated and interesting problem. Hydrological and economic factors must be considered when designing strategies to reduce nutrient runoff from agricultural activities. This dissertation is composed of three chapters that investigate …
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Evaluating agricultural pesticide use and risk for the Chesapeake Bay
… to the risk of toxic contamination of the Chesapeake Bay, little information concerning the nature and extent of that risk is available. Such information is essential, however, for setting pesticide risk management priorities and for designing policies to reduce the risk of toxic pollution …
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Processes Affecting the Behavior of Redox-Sensitive Elements in Chesapeake Bay
… and long-term studies were conducted in Chesapeake Bay. Redox species involved in redox cycling include oxygen, iron, manganese, hydrogen sulfide, nitrogen species, arsenic and antimony species, while phosphate is indirectly involved in redox cycles. Silicate was used as a non-redox …
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Surface Circulation and Horizontal Diffusion Processes of the Lower Chesapeake Bay
… and horizontal diffusion processes of the lower Chesapeake Bay. The study area encompasses some 160 km<sup>2</sup> and includes the area north of Thimble Shoal Channel, southwest of Chesapeake Channel and west of the Chesapeake Bay Bridge and Tunnel. Eleven trials utilizing buoyed drogues were …
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RESPONSES OF THE COPEPOD ACARTIA TONSA TO HYPOXIA IN CHESAPEAKE BAY
Chesapeake Bay experiences seasonal hypoxia each year and while studies have been done investigating how the copepod Acartia tonsa responds to hypoxia, few studies have focused on a comprehensive understanding of how its behavior and fitness are affected by low oxygen. The abundance, distribution, …
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Movements and bioenergetics of canvasbacks wintering in the upper Chesapeake Bay
… (Aythya valisineria) wintering in the upper Chesapeake Bay, Maryland, were investigated. Eighty-seven juvenile female canvasbacks were radio-tracked between 30 December 1988 and 25 March 1989. Diurnal time and energy budgets were constructed for a time of day-season matrix for canvasbacks …
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The occurrence and toxicology of heavy metals in Chesapeake Bay waterfowl
… and tissue accumulations of heavy metals in Chesapeake Bay waterfowl and to determine effects of chronic cadmium and lead ingestion on energy metabolism in waterfowl. Concentrations of cadmium, lead, copper, and zinc were measured in 774 livers, 266 kidneys, and 271 ulnar bones from 15 …
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Supercritical fluid extraction applied to environmental pollutants from Chesapeake Bay sediment
… Sixteen P AHs were extracted from dry Chesapeake bay marine sediment using two-step experimental conditions where step 1 was designed to extract the more volatile P AHs and used 100% CO2 and step 2 incorporated parameters for the removal and trapping of the less volatile P AHs with 10% …
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