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.
Results
Showing 1 to 20 of 709 for “"Natural Resources and Conservation"”.
-
Evaluation of Facilities Design and Methods of Handling Bison
… mammals that have been domesticated for thousands of years (Diamond: 1999, 168-169). Bison (Bison bison) are not on that list even though they have been held on private ranches and in parks for over 100 years. Bison have been treated as wild, difficult to handle animals in roundups and when …
-
Waterfowl Breeding Pair and Brood Usage of Oxbows and Riverine Habitats on the James River
<p>Waterfowl breeding pair and brood surveys were conducted along 250 km of the James River and adjacent oxbows in Brown and Spink Counties, South Dakota during 1987-88. Invertebrates were sampled at brood survey sites in 1988. All of the oxbows and river segments in 1987 contained sufficient water …
-
Effects of Wind Turbines On Nongame Birds in Conservation Reserve Program Grasslands in Southwestern Minnesota
… of wind turbines on nongame bird composition and density in Conservation Reserve Program (CRP) grasslands was evaluated in summer 1995 along Buffalo Ridge in southwestern Minnesota. Bird density in CRP fields with wind turbines was compared with that found in cropland, pastureland, woodland, …
-
Community Compostition and Microhabitats of Macroinvertebrates on Sandbars within the Lower Missouri River as a Food Source for Foraging Migratory Shorebirds
This study took place on 3 lower Missouri River sandbars near Columbia, Missouri during June 2004 to June 2005. The objectives of the study were to describe sandbar microhabitats and determine the abundance and distribution of macroinvertebrates and fish using these microhabitats as a source of …
-
A Comparison of Eastern Wild Turkeys and Rio Grande Wild Turkeys in Northeastern South Dakota
A management goal of the Department of Game, Fish and Parks, National Wild Turkey Federation, and area landowners is to restore the most suitable subspecies of wild turkey in the remaining suitable habitats of South Dakota. Rio Grande wild turkeys (Meleagris gallopavo intermedia) were successfully …
-
Ecology of Merriam's Turkeys in the Southern Black Hills, South Dakota
… selection patterns, survival, reproduction, and recruitment of Merriam’s turkeys (Meleagris gallopavo merriami) in a xeric ponderosa pine (Pinus ponderosa) ecosystem in the southern Black Hills, South Dakota. Winter survival of female Merriam’s turkeys associated with supplemental food from …
-
Biotic Impacts in Shallow Water Bodies of South Dakota Resulting From Common Carp Invasion
… them very efficient at invading new water bodies and rapidly expanding their populations. Their impacts on lentic systems as a result of their feeding behavior are thoroughly documented, and include increases in turbidity, nutrient and phytoplankton concentrations, and cyanobacteria blooms, …
-
Sagebrush Steppe Habitats and Their Associated Bird Species in South Dakota, North Dakota, and Wyoming: Life on the Edge of the Sagebrush Ecosystem
Sagebrush lands in the western Dakotas are at the eastern edge of the distribution of sagebrush in the United States, forming a transition zone from the true shrubsteppe of Wyoming and Montana to the mixed-grass prairie that dominates most of the Dakotas. Because this transition zone is different …
-
Evaluation of Largemouth Bass Harvest Regulations For South Dakota Waters
… minimum length limits of 380 mm (total length) and 300 mm were imposed on largemouth bass Micropterus salmoides in Lake Alvin and Lake Yankton, South Dakota. No largemouth bass longer than 350 mm were collected during pre-regulation electrofishing samples conducted on Lake Alvin. After …
-
Yellow Perch Production in Semi-Permanent Wetlands in Eastern South Dakota and Evaluation of a New Chemical Marking Tool for Juvenile Yellow Perch
… perch Perca flavescens is an important sport and prey fish present in over 80% of natural lakes in eastern South Dakota. Many of these yellow perch population densities fluctuate due to inconsistent recruitment and/or winterkill. Therefore, South Dakota Department of Game, Fish and Parks …
-
Survey of the Fishes and Habitat in the Upper Moreau River, Perkins County, South Dakota
The goal of this study was to document the fishes and habitat characteristics in the upper Moreau River, Perkins Country, South Dakota. Presently, the status of several species, including western silvery minnows, plains minnows, and flathead chubs, is in question within the Missouri River basin of …
-
Food Habits of Yellow Perch in Eastern South Dakota Glacial Lakes
… nets. Yellow perch food habits were documented and related to population form and function characteristics. A wide range of yellow perch population types were identified. Higher-quality yellow perch populations were characterized by fast growth, low density, and low and inconsistent recruitment. …
-
Effects of Two Haying Provisions on Duck Nesting in Conservation Reserve Program (CRP) Fields in South Dakota
Duck nesting in Conservation Reserve Program (CRP) fields was evaluated in 1989 and 1990 to determine the post year effects of emergency haying. Due to severe drought some CRP fields were released in 1988 for emergency haying with the provision that 10% be left in idled strips and some fields were …
-
Bioenergetics of Rainbow Trout in Lake Oahe, South Dakota
… providing South Dakota Department of Game, Fish and Parks biologist the opportunity to substantially increase stocking rates. Concern exist on what effects an increase in the rainbow trout population might have on the rainbow smelt Osmerus mordax population. The objective of this study was to …
-
Yellow Perch Production and Harvest Strategies for Semi-Permanent Wetlands in Eastern South Dakota
Natural production and harvest of yellow perch Perca flavescens within small semi-permanent wetlands in eastern South Dakota is highly variable. Many factors have been attributed to variable natural production including lack of suitable spawning habitat, food availability and competition for …
-
Development, Growth, and Behavioral Ecology of Walleye as Influenced by Sublethal Exposure to Dietary Selenium
… Dakota, was documented in the early l 980's and has since been attributed to poor natural reproduction and/or recruitment. Contaminants are highly suspected in lower Lake Oahe because of the low natural reproduction/recruitment and the lower hatchability of eggs produced from broodstock …
-
Landscape Characteristics Affecting Habitat Use and Productivity of Avifauna on Stock Ponds in Western South Dakota
The effects of local- and landscape-level characteristics on nongarne wetland bird occurrence and density and waterfowl pair and brood density and rates of productivity (broods/ 1 00 pairs) were evaluated in 1 999 and 2000 in western South Dakota. Nongame wetland bird use for the 1 0 most common …
-
Structure and Dynamics of Largemouth Bass Populations in Eastern South Dakota Glacial Lakes and Large Impoundments
… variation in relative abundance, size structure, and body condition for largemouth bass Micropterus salmoides collected by night electrofishing from Enemy Swim Lake, South Dakota, from May through November of 2000 and 2001. Mean catch per unit effort (CPUE; number of stock-length largemouth bass …
-
Changes in Waterfowl, Wetlands, Demographics, and Land Use on the Waubay Study Area, Day County, South Dakota: 1950-53 vs. 1992-93
During 1950-53, Evans and Black (1956) conducted the Waubay Study, one of the first comprehensive studies of waterfowl and wetlands on private lands. During 1992-93, we repeated this study to assess the changes that have occurred relative to waterfowl populations, wetland characteristics, land use, …
-
Estimating Forage Production for Waterbirds and Waterbird Response to Habitat Management at Lacreek National Wildlife Refuge, South Dakota
… crusgalli), annual smartweed (Polygonum spp.), and beggarticks (Bidens spp.) on Lacreek National Wildlife Refuge, South Dakota in September of 2008 and 2009. Multiple linear regression was used to develop prediction equations for each of the target plant genera. Dry seed mass was regressed …
Page 1 of 36