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Full-Text Articles in Life Sciences
Impacts Of White-Tailed Deer Grazing On Spring Wildflower Communities, Faye Frankland
Impacts Of White-Tailed Deer Grazing On Spring Wildflower Communities, Faye Frankland
Masters Theses
High deer densities on state forests and nature preserves throughout Illinois have prompted concerns that deer are impacting the growth, survival, and reproduction of spring-flowering herbaceous plants. I investigated the impacts of white-tailed deer (Odocoileus virginianus) on the herbaceous vegetation, particularly spring wildflowers, at Beall Woods Nature Preserve (BWNP). BWNP was selected as the site for this study because it supports a diverse community of spring wildflowers and a large deer population. The objectives for this study were to: (1) quantify the extent of deer foraging on representative spring-flowering plant species at Beall Woods Nature Preserve, (2) investigate the effects …
Effects Of Leafy Spurge (Euphorbia Esula) Infestation On Breeding Birds Of The Sheyenne National Grassland, Nd, Daniel M. Scheiman
Effects Of Leafy Spurge (Euphorbia Esula) Infestation On Breeding Birds Of The Sheyenne National Grassland, Nd, Daniel M. Scheiman
Masters Theses
Leafy spurge (Euphorbia esula) is an exotic invasive weed in the northern Great Plains. We examined the effects of leafy spurge infestation on densities and nest success of breeding birds in grasslands on the Sheyenne National Grassland (SNG), ND. We categorized spurge-infested grasslands into three levels of infestation, based on the area covered by spurge patches: (a) low (0-20%), (b) medium (20-60%) and, (c) high (> 60%). We surveyed 60 100-m radius circular plots (20 in each category), and searched for nests in three 16-ha plots (one in each category). There were no statistically significant differences in mean species richness …
Prairie Analysis At Prairie Ridge State Natural Area, Jasper County, Il, Annette Kessler
Prairie Analysis At Prairie Ridge State Natural Area, Jasper County, Il, Annette Kessler
Masters Theses
Five restored prairie sites at Prairie Ridge State Natural Area in Jasper County were studied during the growing season of 1998. These sites varied in age from two years to thirty years and in size from 4 acres to 10 acres. Key areas of data recorded were an overall and site specific vascular species lists, phenology of various species, and cover analysis of each site. Frequency cover and importance values of the taxa were determined using randomly located quadrats along line transects. Prairie quality of each site was determined, as well as a similarity index that compared the sites to …