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Articles 91 - 93 of 93
Full-Text Articles in Natural Resources and Conservation
Dynamics And Distribution Of Fishes Occupying A South Dakota Power Plant Cooling Reservoir, Timothy R. Walters
Dynamics And Distribution Of Fishes Occupying A South Dakota Power Plant Cooling Reservoir, Timothy R. Walters
Electronic Theses and Dissertations
Distribution, population number, growth rate, and reproductive activities of walleyes (Stizostedion vitreum vitreum) were studied to evaluate the potential of the Big Stone Power Plant cooling reservoir as a source of walleye brood stock. In addition, dynamics and distribution of bluegill (Lepomis macrochirus) and orangespotted sunfish (L. humilis) were examined. Walleye grew well, reaching a weighted mean total length of 271 mm at formation of annulus I. Survival of walleye was poor, with population estimates of 41 and 43 fish in 1984 and 1985, respectively. Low sample size precluded analysis of distribution, but no consistent preference for an area of …
Influence Of Geomorphological Origin Upon Macroinvertebrate Community Structure In Black Hills Streams, Matthew Lechner
Influence Of Geomorphological Origin Upon Macroinvertebrate Community Structure In Black Hills Streams, Matthew Lechner
Electronic Theses and Dissertations
The purpose of this study was to test a stream classification system proposed for the Black Hills National Forest. Stream physiochemical characteristics and macroinvertebrate community structure were compared among three geomorphically distinct landtype associations in the Black Hills. Stepwise disciminant analysis identified five physiochemical variables, which explained 90% of the variability among landtype associations. The classificatory discriminant procedure correctly reclassified 47 of 52 stations based on the five discriminating invertebrate taxa. Each landtype association was sufficiently different in stream physiochemical characteristics to permit classification. Macroinvertebrates exhibited distributional patterns related to changes in geomorphic structure and stream order, among landtype associations. …
Characteristics And Use Of Wild Turkey Roost Sites In Southcentral South Dakota, Randall Allen Craft
Characteristics And Use Of Wild Turkey Roost Sites In Southcentral South Dakota, Randall Allen Craft
Electronic Theses and Dissertations
Ten radio-tagged wild turkeys (Meleagris gallopavo)were monitored to document roost site use and bird movements in the Missouri River breaks complex of southcentral South Dakota during the summer of 1984. Distances between roost sites used by wild turkeys ranged from 0.55 km to 3.09 km. Primary and secondary roost sites were identified. Turkeys used one primary roost site consistently every night during periods ranging from a few days to 2 months, then moved to other primary roost sites. Secondary roost sites were used inconsistently by only a few birds that occupied the roost one night, and did not return on …