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Articles 1 - 4 of 4
Full-Text Articles in Environmental Sciences
Sediment Metal Concentrations As A Function Of Land Use In The Charles River, Eastern Massachusetts, Darryl L. Luce
Sediment Metal Concentrations As A Function Of Land Use In The Charles River, Eastern Massachusetts, Darryl L. Luce
Graduate Doctoral Dissertations
Two sediment cores and eleven grab samples collected from the Charles River were analyzed to determine changes to the concentration of metals in sediments due to anthropogenic changes in the watershed. The unique aspect of this research was that sediment cores from the same geologic setting, yet having widely different sources, were compared. The findings from that comparison were used to focus the investigation through the remainder of the Charles River. The radionuclides 210Pb, 214Pb, and 137Cs established the year of deposition in the sediment cores. The concentrations of aluminum (Al), iron (Fe), manganese (Mn), copper (Cu), zinc (Zn), chromium …
Management Of Land Use Land Cover Through The Application Of Remote Sensing, Geographic Information Systems And Simulation, Praveen Jha
Graduate Doctoral Dissertations
Deforestation and degradation of forest areas, including those in the Protected Areas (PAs), are major concerns in India. There were 2 broad objectives of the study: the technological objective pertained to the development of state-of-art programs that could serve as Decision Support Systems while finalizing plans and policy interventions, while the other objective aimed at generating geo-spatial data in 2 PAs. A part of the Eastern Himalaya biodiversity hotspot, Manas Tiger Reserve (MTR), Assam, India having an area of 2837.12 sq km and an important part of Rajaji-Corbett Tiger Conservation Unit, Rajaji National Park (RNP), Uttarakhand, India, having an area …
A Model To Relate Environmental Variation To Npdes Permit Violations At Thermoelectric Facilities On The Taunton River, Seth Delevan Sheldon
A Model To Relate Environmental Variation To Npdes Permit Violations At Thermoelectric Facilities On The Taunton River, Seth Delevan Sheldon
Graduate Doctoral Dissertations
Large thermoelectric facilities are issued permits to discharge high volume, high temperature effluents as part of the National Pollutant Discharge Elimination System (NPDES). Once-through cooled power plants are especially dependent on large quantities of cool water to operate. When ambient temperatures are high or streamflow is very low, power plant managers must reduce (i.e., "dial back") energy generation in order to avoid violating their NPDES permit limitations. Sudden dial-back can have human health impacts when electricity is no longer available to provide cooling or other vital services. A superior system of electricity and environmental management would reduce the probability of …
The Relation Among Essential Habitat, Ocean Acidification, And Calcification On The Nantucket Bay Scallop (Argopecten Irradians), Bryanna Joy Broadaway
The Relation Among Essential Habitat, Ocean Acidification, And Calcification On The Nantucket Bay Scallop (Argopecten Irradians), Bryanna Joy Broadaway
Graduate Doctoral Dissertations
The relation among essential habitat, ocean acidification, and calcification in Argopecten irradians (Lamarck 1819) was examined through field and laboratory research. Three major questions were addressed: 1) What habitat conditions are associated with abundant populations of bay scallops in Nantucket Harbor? 2) How might future predictions of ocean pH decline affect the biomineralization of shell by bay scallop across juvenile and adult life stages? 3) Are there biochemical indicators that can inform our understanding on how the bay scallop may cope with ocean acidifying events? Elemental fingerprinting of adult and juvenile Nantucket bay scallop shells, A. irradians, revealed distinct element/Ca …