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Full-Text Articles in Life Sciences

Development Of An Automated Detection System For Nitrite In Aquatic Environments, Tim Schierenbeck Aug 2016

Development Of An Automated Detection System For Nitrite In Aquatic Environments, Tim Schierenbeck

Theses and Dissertations

The main objective of the project is to develop an automated nitrite sensor for use in aquatic environments, and more specifically for use in recirculating aquaculture systems (RAS), where monitoring can help sustain a controlled environment, protect against nitrite intoxication, and promote fish health. Detecting nitrite manually with semi-quantitative colorimetric test kits, although inexpensive and simple, is prone to inter-user variability and poor sensitivity. An automated nitrite sensor has potential to provide higher resolution measurements at both concentration and time scales and can serve as a research tool for the study of filtration systems essential in maintaining a healthy RAS …


Assessment Of Benthic Habitat Quality In Lower Green Bay, Lake Michigan With Special Regard To Potential Hexagenia Recolonization, Christopher Michael Groff Aug 2016

Assessment Of Benthic Habitat Quality In Lower Green Bay, Lake Michigan With Special Regard To Potential Hexagenia Recolonization, Christopher Michael Groff

Theses and Dissertations

With environmental remediation in the Great Lakes, Hexagenia have recovered or are recovering in systems from which they were once extirpated. An active Hexagenia recovery does not appear to be taking place in lower Green Bay. This study first examines the highly fluidized nature of lower Green Bay sediment as a possible cause for their lack of recovery due to nymphs’ potential inability to construct and maintain burrows essential to the completion of their life cycles. Hexagenia bilineata nymphs collected from the Upper Mississippi River were distributed into oxygenated aquaria containing substrates from lower Green Bay or the Upper Mississippi …


Captive Chimpanzee Group And Individual Space Use In A Naturalistic Enclosure, Amanda Epping May 2016

Captive Chimpanzee Group And Individual Space Use In A Naturalistic Enclosure, Amanda Epping

Theses and Dissertations

Current research continues to identify the cognitive and social abilities of chimpanzees, as well as the imperative to provide a complex environment in captivity that allows them to practice and use their minds appropriately (Ross 2009). The goal of this research is to investigate how chimpanzee social relationships change based on the available amount of enclosure space in a captive setting. The project’s study group is made up of six captive born chimpanzees housed in a naturalistic enclosure at the Lincoln Park Zoo in Chicago, Illinois. Data is taken daily as a part of a long-term study at the Lester …