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Ecology and Evolutionary Biology
School of Natural Resources: Dissertations, Theses, and Student Research
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- Behavior (1)
- Carbon (1)
- Cascade (1)
- Chronic wasting disease (1)
- Disease transmission (1)
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- Ecology (1)
- Ethogram (1)
- Fish community (1)
- Food webs (1)
- Invertebrate community (1)
- LWD (1)
- Large woody debris (1)
- Large woody debris movement (1)
- Large woody debris retention (1)
- Missouri River (1)
- Nebraska (1)
- Odocoileus virginianus (1)
- Phragmites (1)
- Rivulus (1)
- Scrape (1)
- Scraping (1)
- Season (1)
- Stream (1)
- Subsidies (1)
- Terrestrial (1)
- Trophic (1)
- Tropical (1)
- White-tailed deer (1)
Articles 1 - 4 of 4
Full-Text Articles in Physical Sciences and Mathematics
Scraping Behavior In Male White-Tailed Deer As A Potential Means Of Transmitting Chronic Wasting Disease, Travis C. Kinsell
Scraping Behavior In Male White-Tailed Deer As A Potential Means Of Transmitting Chronic Wasting Disease, Travis C. Kinsell
School of Natural Resources: Dissertations, Theses, and Student Research
Chronic wasting disease (CWD) has become a concern for wildlife managers and hunters across the United States. High prevalence of chronic wasting disease (CWD) in older male white-tailed deer (Odocoileus virginianus) suggests that sex-specific social behavior may contribute to the spread of the disease among males. Scraping is a marking behavior performed by male white-tailed deer during the rut in which a pawed depression and associated over-hanging branch are marked with saliva, glandular secretions, urine, and feces. We placed 71 and 35 motion-activated cameras on scrapes in DeSoto National Wildlife Refuge in western Nebraska and eastern Iowa from …
Seasonal Variation In Terrestrial Insect Subsidies To Tropical Streams And Implications For The Diet Of Rivulus Hartii, David C. Owens
Seasonal Variation In Terrestrial Insect Subsidies To Tropical Streams And Implications For The Diet Of Rivulus Hartii, David C. Owens
School of Natural Resources: Dissertations, Theses, and Student Research
Terrestrial invertebrates subsidize fish diets in lotic ecosystems. Seasonality strongly influences terrestrial invertebrate abundance in temperate regions and alters their delivery to streams. Seasonal changes in the tropics are characterized by distinct wet and dry periods, with marked variation in invertebrate abundance. However, little is known about how these seasonal changes affect invertebrate subsidies and their ecological consequences for tropical streams. We measured the effect of rainfall and canopy density on terrestrial invertebrate falling input, as well as seasonal variation in falling input, benthic and drifting invertebrate, and Rivulus hartii (Hart’s Rivulus) diet composition during both the wet and dry …
Carbon Dynamics In A Phragmites Australis Invaded Riparian Wetland, Steven Walters
Carbon Dynamics In A Phragmites Australis Invaded Riparian Wetland, Steven Walters
School of Natural Resources: Dissertations, Theses, and Student Research
Invasive plant species are widely recognized as a major threat to biodiversity and ecosystem stability. Wetland ecosystems tend to be much more susceptible to invasions because of their location on the landscape where water, nutrients, and the impacts of disturbances accumulate. Invasive plants have the ability to alter ecosystem processes and community/population dynamics. The ability of invasive plants to alter these processes can have profound economic consequences. In the United States, control of invasive wetland species alone costs approximately 155 million dollars annually. The state of Nebraska spends 2 million dollars annually controlling invasive plant species in the Platte River …
Retention, Movement, And The Biotic Response To Large Woody Debris In The Channelized Missouri River, Michael W. Archer
Retention, Movement, And The Biotic Response To Large Woody Debris In The Channelized Missouri River, Michael W. Archer
School of Natural Resources: Dissertations, Theses, and Student Research
Large woody debris (LWD) is an important component of a healthy aquatic ecosystem. However, little is known about the dynamics of LWD in a large, channelized river such as the Missouri River. My objectives were to first, assess the abundance of LWD found along the channelized portion of the Missouri River. Second, I documented movement of LWD that entered the river. Lastly, using PRIMER software I analyzed what effect, if any, river segments, bend types, and LWD had on the community composition of the macroinvertebrate and fish that inhabit the river. Abundance of LWD was greater along bends that have …