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Full-Text Articles in Life Sciences
Type Of Synthetic Microfiber Influences Ingestion By Freshwater Worms, Sarah A. Martinez
Type Of Synthetic Microfiber Influences Ingestion By Freshwater Worms, Sarah A. Martinez
Honors College Theses
Plastics enter the environment from many sources, including clothing made from synthetic textiles, which shed a form of microplastics (microfibers) during their production, use and disposal. The impacts of microfibers on freshwater organisms are relatively unknown, therefore we tested the hypothesis that short- and long-term effects of microfibers on the aquatic worm, Lumbriculus variegatus, depend on the type of synthetic microfiber present. Microcosms containing L. variegatus, sediment and water were exposed to either no fibers (control) or one of three microfiber treatments (nylon, polyester or olefin) at the same concentration for 48 hours or 28 days. At the …
Trophish: Building A Global Database Of Freshwater Trophic Interactions, Jacob M. Ridgway
Trophish: Building A Global Database Of Freshwater Trophic Interactions, Jacob M. Ridgway
Honors Thesis
Freshwater management and research frequently use the trophic data of freshwater fishes. Despite this fact, it is difficult to perform a simple search of dietary information for any one fish species. FishBase represents, to our knowledge, the largest compilation of freshwater dietary information to date. However, it excludes a large portion of the ecological literature due to its development taking place prior to the creation of most modern scientific search engines. Our project (TroPhish) is building upon FishBase by digitizing approximately 130 years of data from the fish predation literature. Data from the primary and grey (e.g. theses, dissertations, reports) …
Influence Of Nutrients And The Native On E. Coli Survival In The Beach Environment, Brigid Meyers
Influence Of Nutrients And The Native On E. Coli Survival In The Beach Environment, Brigid Meyers
Theses and Dissertations
E. coli is used as an indicator for water quality to determine if water poses a health risk for pathogens. Past research has shown that E. coli is present in high numbers in freshwater beach sands distinct from fecal pollution events, yet the precise mechanism for their persistence in not well understood. Persistent E. coli populations in sand can resuspend into adjacent water and lead to increased beach closures when no threat is present. This work identifies factors that influence the survival of E. coli in sand using laboratory microcosms to replicate beach conditions. Microcosms were deployed to examine the …