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Articles 1 - 12 of 12
Full-Text Articles in Physical Sciences and Mathematics
Mammal Damage And Movements Of Deer Mice In South Dakota Shelterbelts, Thomas G. Barnes
Mammal Damage And Movements Of Deer Mice In South Dakota Shelterbelts, Thomas G. Barnes
Electronic Theses and Dissertations
A study was initiated to examine animal damage to new shelterbelts in Brookings County, South Dakota. Feeding preferences of deer mice (Peromyscus maniculatus) prairie voles (Microtus ochragaster), and cottontail rabbits (Sylvilagus floridanus) was conducted on 5 woody species that colIIIllonly occur in South Dakota shelterbelts. Movementsof deer mice were studied in a mature shelterbelt using a smoked kymograph tracking technique. Green ash (Fraxinus pennsylvanica Marsh.), tatarian honeysuckle (Lonicera tatarica L. ),, and common lilac (Syringa vulgaris L.) were the most common tree species encountered in this study. Of the trees examined, 398 (8. 9%) sustained animal damage over the winter. …
Rainbow Trout Production And Water Quality In Eastern South Dakota Dugouts, William Lee Vodehnal
Rainbow Trout Production And Water Quality In Eastern South Dakota Dugouts, William Lee Vodehnal
Electronic Theses and Dissertations
Nine-hundred-fifty-four rainbow trout (Salmo gairdneri) were stocked into 18 eastern South Dakota dugouts in April 1980 to determine the feasibility of dugouts for raising annual fish crops. Trout growth was compared between dugouts by stocking rate (1977/ha, 1483/ha, 988/ha, and 494/ha) and feeding combination [fathead minnows (Pimephales promelas) and supplemental feed, supplmental feed, and trout alone]. Chemical physical properties were also monitored in an old and new unstocked dugouts from July 1980 to July 1981. Growth was greater for 988/ha rainbow trout than the other stocking densities during the April 1980 to July 1980 sampling period. Mean total length increased …
Evaluation Of A Power Plant Reservoir As A Holding Area For Paddlefish Brood Stock, Terry L. Margenau
Evaluation Of A Power Plant Reservoir As A Holding Area For Paddlefish Brood Stock, Terry L. Margenau
Electronic Theses and Dissertations
Twenty paddlefish (Polyodon spathula) released into the Big Stone Power Plant boiler make-up reservoir were monitored to determine growth, condition, and food habits. In addition, fish and zooplankton populations were sampled and chemical and physical parameters measured to determine the potential of the reservoir as a holding area for paddlefish brood stock. Paddlefish captured during the first year after their release into the boiler make-up reservoir averaged 2.2 kg body weight increases and 59 mm eye-fork length increases. Condition factors of captured paddlefish also increased during this period from 1.26 to 1.49. Paddlefish food in the reservoir consisted almost entirely …
Aquatic Plant Communities And Invertebrates In A Prairie Pothole During Duck Brood Rearing, Jeffrey W. Mccrady
Aquatic Plant Communities And Invertebrates In A Prairie Pothole During Duck Brood Rearing, Jeffrey W. Mccrady
Electronic Theses and Dissertations
More than 1,100 samples of aquatic plants and associated invertebrates were collected in a prairie wetland. Sampling was done weekly throughout the duck brood rearing season. Linear regression revealed a 4 to 100 ratio of animal to plant biomass (R²=0.488). Comparatively high degrees of association were found between Ceratophyllum demersum and Gastropoda and between Lemna minor and most zooplankton groups. Significant sources of variation in invertebrate biomass were plant communities, date, plants, and community by date interaction. Depth and communities were not significant.
Survival, Growth, Food Selection, And Alimentary Canal Development Of Intensively Reared Walleyes And Yellow Perch, Gregg Alan Raisanen
Survival, Growth, Food Selection, And Alimentary Canal Development Of Intensively Reared Walleyes And Yellow Perch, Gregg Alan Raisanen
Electronic Theses and Dissertations
Five genera of invertebrates, collected from a municipal sewage lagoon, were fed to newly hatched larval walleyes, (Stizostedion vitreun vitreun), and yellow perch, (Perca flavescens), to document survival, growth, food selection, and alimentary canal development of these fishes. Mean survival of walleyes for the 18 day period after hatching was 14.1%: mean unaccountable mortality was 43.5%. Forty-three percent of the walleyes remaining after 18 days survived an additional 32 days; mean unaccountable mortality was 33.8%. Mean daily length gain over the 50 day period was 0.8 mm/day. The cladoceran, Moina brachiate, was selected for by walleyes and yellow perch; the …
Movements And Habitats Of Brood-Rearing Wood Ducks On A Prairie River, Randy L. Smith
Movements And Habitats Of Brood-Rearing Wood Ducks On A Prairie River, Randy L. Smith
Electronic Theses and Dissertations
Radio telemetry and brood surveys were used to evaluate wood duck (Aix sponsa) brood habitat and movements along 40 km of the Big Sioux River in eastern South Dakota during 1979-81. Most of the oxbows and nearby wetlands in the study area contained water in 1979-80, but drought dried all but 2 of the 33 oxbows in 1981. Fourteen brood hens were radio monitored. In 1980, 4 hens utilized oxbows, 1 hen utilized the river, and 2 hens used other habitats for brood rearing. In 1981, 4 hens utilized oxbows, 2 hens utilized the river, and 1 hen utilized the …
Growth, Food Habits, And The Relative Effectiveness Of Stocking Rainbow Trout (Salmo Gairdneri) In South-Central South Dakota, Kenneth C. Clodfelter
Growth, Food Habits, And The Relative Effectiveness Of Stocking Rainbow Trout (Salmo Gairdneri) In South-Central South Dakota, Kenneth C. Clodfelter
Electronic Theses and Dissertations
The effectiveness of stocking rainbow trout (Salmo gairdneri) in 47 selected stock ponds in south-central South Dakota was analyzed in 1977 and 1978. Rainbow trout were captured in 31 (66.0%) ponds during the study. Twenty-five of the 31 ponds (80.6%) appeared to have excellent rainbow trout populations. Rainbow trout stocked in ponds with a resident largemouth bass (Micropterus salmoides) population had poor survival. The growth rates and condition factors for 93 and 463 rainbow trout in 1977 and 1978, respectively, were excellent. The average total length for age-groups I and II rainbow trout in 1977 was 195 and 224 mm, …
Great Blue Heron Nesting Biology And Habitat Use On The James River In South Dakota, Eileen M. Dowd
Great Blue Heron Nesting Biology And Habitat Use On The James River In South Dakota, Eileen M. Dowd
Electronic Theses and Dissertations
Breeding biology, nest site activities, and habitat use of great blue herons (Ardea herodias) nesting in the Glendale heronry, South Dakota, were investigated in 1980 and 1981. Mean brood size was 3.35 nestlings. The predicted number of feeding trips of adult birds peaked when nestlings were 29 days old. A significant amount of variance in adult feeding trips per hour was accounted for by southerly winds and the time period from 1800-2100 hours. The variables that were not significantly related to the number of feeding trips were temperature, wind speed, wind directions other than south, cloud cover, and the 4 …
Distribution, Movement, And Temperature Selection Of Adult Walleye And Muskellunge In A Power Plant Cooling Reservoir, Jerry A. Younk
Distribution, Movement, And Temperature Selection Of Adult Walleye And Muskellunge In A Power Plant Cooling Reservoir, Jerry A. Younk
Electronic Theses and Dissertations
Distribution and habitat selection of five adult walleyes (Stizostedion vitreum vitreum) and one adult muskellunge (Esox masquinongy), in a power plant cooling reservoir, were determined using temperature-sensitive ultrasonic transmitters, A total of 342 locations were obtained during the monitoring period (1 May-13 November 1981). Walleyes exhibited a seasonal distribution pattern; inhabiting the discharge area during the cooler months and the intake area during the warmer months, Summer-fall home ranges of three walleyes were estimated, Maximum home ranges (maximum area covered by an individual) were overlapping and similar in size, ranging from 36, 7-45, 9 ha, Estimates of utilized areas (intensively …
Composition, Biomass, And Protein Content Of A Lemna Trisulca L., Invertebrate Community In A Prairie Wetland, Linda J. Meyers
Composition, Biomass, And Protein Content Of A Lemna Trisulca L., Invertebrate Community In A Prairie Wetland, Linda J. Meyers
Electronic Theses and Dissertations
Samples of star duckweed (Lemna trisulca L.) were collected from a South Dakota prairie wetland during the summer 1981. Amphipods and gastropods were the dominant macroinvertebrates found within samples of duckweed in terms of biomass and density. Cladocera were the dominant microinvertebrates found in association with star duckweed. Significant variability was found in the biomass and densities of specific invertebrates with respect to sampling dates. Crude protein values of star duckweed-invertebrate community samples ranged from 7.6 to 18.5% and were found to correlate significantly with protein levels of the duckweed. Crude protein values for star duckweed ranged from 7.1 to …
Food Habits And Placental Scar Counts Of Bobcats In South Dakota, David Eric Nomsen
Food Habits And Placental Scar Counts Of Bobcats In South Dakota, David Eric Nomsen
Electronic Theses and Dissertations
Bobcat (Lynx rufus) food habits and placental scar counts were investigated in western South Dakota during 1978-79 and 1979-80 trapping and hunting seasons. Food habits were recorded by frequency of occurrence and placental scar counts were used to determine litter size for South Dakota bobcats. Rabbits (Sylvilagus spp. and Lepus spp.), rats and mice (primarily Microtus spp. and Peromyscus spp.), and deer (Odocoileus spp.) were identified in 56, 32, and 7% of bobcat stomachs, respectively. Analysis showed that rabbits, rats and mice, and deer occurred in 58, 36, and 9% of bobcat intestines, respectively. Occurrences in rabbits decreased from 67% …
Culture Of Channel Catfish In East-Central South Dakota Dugout Ponds, Martin Nicholas Dilauro
Culture Of Channel Catfish In East-Central South Dakota Dugout Ponds, Martin Nicholas Dilauro
Electronic Theses and Dissertations
Twenty dugout ponds in east-central South Dakota were stocked 10 May 1980 with fingerling (mean weight 39.4 g, mean total length 108.4 mm) channel catfish (Ictalurus punctatus) at stocking rates of 309, 618, 1,235, and 1,853 fish/ha. Supplemental food was provided in 16 ponds (four at each stocking rate) at a rate of 4% body weight every other day. Fish in four ponds stocked, one at each of the respective stocking rates were not fed. Eleven of the 16 ponds which received feed were considered fit for analysis at the end of the study period, 27 September 1980. Two of …