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Full-Text Articles in Ecology and Evolutionary Biology

Complexity And Uncertainty In Human And Ecological Risk Assessment, Matthew Jordan Dellinger Dec 2012

Complexity And Uncertainty In Human And Ecological Risk Assessment, Matthew Jordan Dellinger

Theses and Dissertations

Multiple interacting stressors in the environment present increasingly complex risks to human health. Too often, however, the data required for traditional risk assessment are either lacking or unavailable at the necessary spatial or temporal scale. In addition, assessment practices and management policies need to move away from single factor approaches in order to accommodate the reality of complex chemical mixtures and environmental stressors. Recent literature suggests that a paradigm shift is under way. This points to a need for the development of new techniques both for rapid data collection and flexible risk assessment strategies that can adapt to make use …


An Evaluation Of The Effect Of Stormwater Treatment Ponds On Wetland And Stream Quality Indicators, Subhomita Ghosh Roy Dec 2012

An Evaluation Of The Effect Of Stormwater Treatment Ponds On Wetland And Stream Quality Indicators, Subhomita Ghosh Roy

Theses and Dissertations

Modifications of land cover in urban areas are leading to hydrological, physiochemical and subsequent biological disturbances in the receiving aquatic ecosystems. Resulting in damage of the limited quantity of available freshwater. Based on the recognition of the value of natural wetlands in water quality improvement, constructed wetlands have been widely used for water treatment, to remove fine pollutants from catchment runoff also to control increased surface runoff from urbanization. The hypotheses of the study was that the surface water quality would improve while the sediment quality would vary moving from up-gradient to down-gradient through the interconnected wetlands, relative to precipitation, …