Digital Commons Network^™

Transport And Fate Of Phosphorus In The Nearshore Zone Of Lake Michigan, Nathan Van Ee

Theses and Dissertations

Bioavailable phosphorus loads exported to Lake Michigan from the Milwaukee and Sheboygan River Watersheds appear to have increased in the last 40 years despite meeting total phosphorus (TP) loading goals set by the Great Lakes Water Quality Agreement (GLWQA).Overall, bioavailability of P delivered from the Milwaukee and Sheboygan Rivers was highest during the warmer months, which coincides with the nearshore nuisance algae growth season. However, first order loss rates of SRP calculated during baseflow recession were also greatest during the summer, suggesting that increased river residence time during the summer could reduce export of bioavailable P. Observations of phosphorus partitioning …

Prehistoric Humans And Elk (Cervus Canadensis) In The Western Great Lakes: A Zooarchaeological Perspective, Rebekah Ann Ernat

Theses and Dissertations

This thesis examines the relationship between humans and elk (Cervus canadensis) in the western Great Lakes region from prehistoric through early historic times, with a focus on Wisconsin archaeological sites. It takes a social zooarchaeological perspective, drawing from archaeological, ecological, biological, historical, and ethnographic sources. I also use optimal foraging theory to examine subsistence-related decisions. Based on my review of 34 Wisconsin archaeological sites or site components, elk diminished in relative dietary importance in prehistoric times as subsistence strategies shifted. The use of their bones, especially scapulae and antlers, in tool production increased. Other roles, as markers of group and …

The Unintended Benefits Of Dams Should Be Considered Prior To Removal, Jacob Lloyd Jozefowski

Theses and Dissertations

Dams provide multiple benefits; however, they also degrade rivers. Many dams no longer serve their intended purpose and are nearing the end of their operational lives. The aging of dams coupled with the cost of restoration and maintenance, regulation, and the ecologic impacts of dams has resulted in removal becoming a viable management alternative. Despite increased utilization, limited research and a lack of quantitative predictive capacity results in large amounts of uncertainty associated with impacts of dam removal. Additionally, dams which no longer serve their intended purpose may still have unintended positive benefits such as the prevention of the spread …

Determining The Impacts Of Environmental Contaminants To Zebra Mussels Using Genetic Biomarkers, Nicklaus James Neureuther

Theses and Dissertations

ABSTRACT

DETERMINING THE IMPACTS OF ENVIRONMENTAL CONTAMINANTS TO ZEBRA MUSSELS USING GENETIC BIOMARKERS

by

Nicklaus James Neureuther

The University of Wisconsin-Milwaukee, 2016

Under the Supervision of Professor Rebecca Klaper, PhD

Persistent legacy contaminants and emerging chemicals of concern continue to be a threat to the function and health in the Great Lakes Areas of Concern (AOCs). While chemical monitoring programs traditionally sample water and sediment, these studies can only provide information of the type and level of contamination within an (AOC). This being said, information on the biological impacts to the biota are needed to measure impairments of chemical exposure, …