Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"Farm pond"”.
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Food Habits of Fish In A Multispecies Farm Pond
… were studied during 1970 and 1971 in Abbey Pond, South Dakota. Aquatic insects, zooplankton, mollusks, and fish were the most frequently consumed food items by the three species. Yellow perch led primarily on aquatic insects, zooplankton, and mollusks. Aquatic insects were dominant (by …
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Chlorinated Pesticide Levels in Knox County, Nebraska Farm Pond Fish
… The results were compared with soil from each pond. The results were also compared with results from a larger species of fish (higher in the food chain). The fish fillets and the soil were found to contain levels of these pesticides which were at or below quantitation limits for the method …
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A study of the fish production of a natural farm pond
Thesis (M.S.)--Michigan State College of Agriculture and Applied Science. Dept. of Zoology, 1944
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Population Dynamics of Copepoda and Cladocera in an Iowa farm pond, Summer 1973
… of zooplankton found in an unpolluted artificial pond. This will serve as a basis for comparisons with other bodies of water to show man's effect upon one of the most basic of all ecosystems. Procedure. Water samples were collected with a Kemmerer Water Sampler and poured into a plankton net for …
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Spatial and Temporal Genetic Heterogeneity in a Natural Daphnia Population: Ecological and Physiological Differences Between Genotypes (Cladocera, Freshwater, Parthenogenesis)
… Daphnia pulex, inhabiting a permanent farm pond in east-central Illinois, indicated that electrophoretically distinct genotypes (clones) are frequently distributed non-randomly in the pond, both vertically and horizontally. Spatial autocorrelation analysis indicated that the genotypic …
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Small water, big potential: farm ponds and their potential for native fish conservation
Small impoundments, particularly farm or agricultural ponds, are often overlooked as potential habitat for native species despite their ubiquity across many human altered landscapes. Farm ponds intermittently connect to streams during floods allowing species exchanges to and from these novel …
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An evaluation of systematic error in the estimation of fish population size
… population in a 1.16 hectare Virginia farm pond. After estimates were obtained, the pond was drained in order to compare estimated population size with actual population size. In all cases, population estimates were significantly less than actual population size. An examination of the …
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Seed Dispersal by Aquatic Turtles
… in the feces of sliders and snappers from a farm pond in Christian County, Mo. Feeding trials were conducted to determine if seeds were being damaged as they passed through the digestive tracts of snappers (n = 10) and sliders (n = 10). The largest amount of damaged seeds passed was mulberry …
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Farm ponds of the eastern Great Plains: Key challenges and opportunities for conserving amphibians in these novel ecosystems
Farm ponds are numerous in the agricultural landscapes of the Eastern Great Plains of the United States. These ponds are constructed to support a variety of functions, including erosion control, cattle grazing, and recreational fishing, but their role in supporting native biodiversity, including …