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Now showing items 141-150 of 3438
Community Dynamics of Grassland Birds, Rangeland Vegetation, and Black-Tailed Prairie Dogs on Grazed Mixed-Grass Prairie
(North Dakota State University, 2015)
Investigators surveyed vegetation and grassland bird communities on and off black-tailed prairie dog (Cynomys ludovicianus) towns to investigate community drivers, interactions, and species associations. This study was ...
Crop and Prairie Grasses Serving as Hosts for the Hessian Fly
(North Dakota State University, 2012)
Insect herbivores typically parasitize a relatively small number of plant species. Host specialization is presumed to be a result of evolutionary arms races, with insect adaptations ultimately restricting host range. Being ...
Foraging Ecology of Rangeland Bats
(North Dakota State University, 2017)
Land-use and land cover changes impact the distribution of landscape features in rangelands and wildlife use of the landscape. To balance the requirements of wildlife groups that respond differently to landscape features, ...
The Use of Sediment Removal to Reduce Phosphorus Levels in Wetland Soils and the Distribution of Plant-Available Phosphorus in Wetland Soils and its Potential Use as a Metric in Wetland Assessment Methods
(North Dakota State University, 2014)
Plant-available phosphorus (P) in wetland soils and its relationship with wetland communities and condition is somewhat unknown in the Prairie Pothole Region (PPR) in North America. Research objectives were to determine ...
Soil Salinity and Sodicity Impacts on Soil Shrinkage, Water Movement and Retention
(North Dakota State University, 2015)
Saline, sodic, and saline-sodic ground waters are problematic throughout the Northern Great Plains and Red River Valley. High sodium adsorption ratio (SAR) and low electrical conductivity (EC) of soil solution and irrigation ...
The Effects of Herbivory and Vegetation Competition on Seedling Survival and Growth in the Middle Sheyenne River Watershed, North Dakota
(North Dakota State University, 2017)
There is a concern about the lack of regeneration of riparian hardwood forest communities in the Middle Sheyenne River Watershed of northeastern North Dakota. Natural resource managers and landowners are unsure if herbivory ...
Effect of Larval Diet on Endogenous Carbon Reproductive Resources of Fifth Instars and Adult Females of the Moth, Heliothis Virescens
(North Dakota State University, 2013)
Mostly adult Lepidoptera feed on plant nectar. That is, adults can only contribute to
carbon, and not nitrogen, acquisition. The moth Heliothis virescens were used to explore the
hypothesis that larval nutrition influences ...
Influence of Neonicotinoid Seed Treatment on Two Co-Occuring Arthropod Pests, Two-Spotted Spider Mite (Tetranychus urticae) and Western Flower Thrips (Frankliniella occidentalis)
(North Dakota State University, 2019)
Insecticidal neonicotinoid seed treatments in agriculture is a common insect pest management strategy. Seed treatments have systemic and residual toxicity, which are effective against target insect pests. However, effects ...
A Study of Prairie Reconstructions in the Eastern Dakotas
(North Dakota State University, 2019)
Two studies of reconstruction processes in the Northern Great Plains (NGP) are presented. The first study is a retrospective study on United States Fish and Wildlife Service (USFWS) managed lands seeded with a high diversity ...
Biological Capabilities of Selected Ecological Sites in the Western Dakotas
(North Dakota State University, 2014)
The study was conducted on the Dakota Prairie National Grasslands (DPG) within the Little Missouri National Grassland (LMNG) of North Dakota and Grand River National Grassland (GRNG) of South Dakota during the summer and ...