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Showing 1 to 20 of 729 for “"South Dakota"”.
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Helminths of South Dakota Coyotes
… carcasses were obtained for this study from South Dakota Department of Game, Fish and Parks trappers and from fur buyers. Coyotes were necropsied, internal organs were examined for helminth parasites, and parasites located were collected and identified. Nematodes found included Toxascaris …
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Limnology of Selected South Dakota Lakes
… chemical, and biological aspects of 45 lakes in South Dakota were studied from July 1965 to July 1967. Maximum water temperature at the surface reached 28 C. Most of the lakes studied exhibited continuous circulation except when ice covered. Thermocline formation was observed in six of the lakes. …
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Nesting Chronology of South Dakota Ducks
… were censused on 476 randomly selected plots in South Dakota during July of the years 1973 through 1976. Broods were also censused on wetlands located off the study plots both in July and August of these years, except in 1976 when no August counts were made. Hatching and nest initiation dates …
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Aeration of Stockade Lake, South Dakota
Intermittent aeration of Stockade Lake (2,470 acre feet) during the summers of 1967 and 1968 temporarily altered the thermal profile and phytoplankton density. Continual aeration for 48 hours in the deepest portion of this eutrophic lake produced epilmnetic cooling, hypolimnetic warming and …
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Interpretive Potential of South Dakota Wetlands
A study was initiated to devise a method for selecting prairie wetlands on which nature interpretation areas could be established. An evaluation form was designed to systematically identify areas of good potential and 64 prairie wetlands were evaluated. Twenty-two percent of the evaluated marshes …
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Breeding Waterfowl Populations in South Dakota
Breeding waterfowl in South Dakota were censused on 500 legal quarter sections within 125 clusters representing a proportional stratified random sample of 0.16 percent of the state area. Two breeding pair counts, one in May and second in June, were conducted each year on the sample units in 1973 …
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Assessment of Wetland Mitigation in South Dakota
… this project was to review wetland mitigation in South Dakota by 1) reviewing federal and state wetland policies and regulations; 2) examining the outcomes of wetland impact pennit requests completed and submitted to the South Dakota Corps Regulatory Office from 1996 to 1999; and 3) comparing the …
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Phenologic Assessment of Western South Dakota Rangelands
… resolution in the Bad River watershed of western South Dakota. Analysis revealed that biomass production decreased with precipitation from east to west across the study area. Alternatively, cool season percentage of total production increased from east to west. Cool season biomass production …
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Fox-Prey Relationships in Eastern South Dakota
… were studied on four units in eastern South Dakota from December 1964 to September 1966. Each unit was composed of a 100-square-mile "reduction area," on which fox populations were reduced, and a 100-square-mile "check area," on which fox populations were not reduced for the study. …
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A Study of Milk Composition in South Dakota
… supply of milk. The Dairy Science Department at South Dakota State University has received reports of lower than average product yields in several dairy plants in the state, especially during certain times of the year. Lower product yields make for lower economic returns to the processing plants …
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Evaluation of Flame Weeding in Southeastern South Dakota
<p>Weed management is the main yield-limiting factor in production of organic crops. Currently, organic producers have limited resources available for in-row weed management. Flame weeding has been recognized for its potential as one part of an integrated approach at weed management in organic …
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Estimation of Predator Densities in Western South Dakota
… skunk (Mephitis mephitis) populations in western South Dakota, to determine if temporal variation of these populations occurred within study areas, and to determine absolute densities of the above species. Relative densities of coyote, red fox, and striped skunk populations were determined using …
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Demographics of Western South Dakota Wetlands and Basins
… feature of the semiarid landscape of western South Dakota. These wetlands have numerous social and economic values and functions for both landowners and non-owners, as well as for fish and wildlife species. For this reason, accurate information about wetland abundance, characteristics and …
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Factors Affecting Mercury Accumulation in South Dakota Fishes
Mercury (Hg) contamination in South Dakota fishes has become an important issue. In recent years, several lakes in South Dakota have been found to contain fish with elevated Hg concentrations and fish consumption advisories have been issued for Bitter Lake (Day County), Twin Lake complex (Highway …
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Mammal Distributions and Habitat Models for South Dakota
… may be suitable for unprotected species. South Dakota's Gap Analysis Project began in 1997 with information gathered on vegetation, vertebrates, and public lands of South Dakota. The objectives of this study were: (1) develop distribution maps and habitat models for the mammals of South …
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Nesting Giant Canada Geese in Western South Dakota
… vegetation, distance to nearest farmstead, and southward drainage were the 6 variables which best separated the 4 classes of ponds. When “class” and the other 30 variables were entered into the analysis the presence of absence of geese on stockponds was predicted by the computer with 92% and 93% …
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Chemical Survey of Selected South Dakota Lake Sediments
… sediments of 16 lakes and ponds in northeast South Dakota. These lakes were glaciated, relatively shallow, and productive. Ranges of the surface sediments were: available phosphorus, 2 to 42 ppm; organic carbon, 0.94 to 5.34 percent; and organic nitrogen, 0.29 to 0.79 percent. Ranges of …
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Geographical Distribution and Morphometrics of South Dakota Turtles
… little information has been published on South Dakota turtles compared to the neighboring Midwest states. This study was conducted to compile literature relevant to the species of turtles that occur in the state; develop proper protocols for field collection, morphological measurement, …
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Bioenergetics of Walleye in Lake Oahe, South Dakota
… trophic interactions of walleyes in Lake Oahe, South Dakota. Monofilament gill nets were set at three depths in the water column (bottom, suspended, and surface) from May through September, 1994 to determine the effect of gill net placement on catch rates of walleyes. Catch per unit effort of …
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Seasonal Movements of Prairie Grouse in South Dakota
… were trapped in Gregory and Lyman Counties in south-central South Dakota. Cannon-projected nets and funnel traps were used to capture prairie grouse on breeding grounds and winter baitsites. Some birds were marked with backtags and leg-markers. Movement information was obtained from field …
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