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Full-Text Articles in Life Sciences

Climate Change And Metapopulation Implications For Species Re/Introductions: A Spatial Analysis Of Suitable Habitat For The American Marten (Martes Americana) In Northern Michigan, Joshua Michael Green Dec 2013

Climate Change And Metapopulation Implications For Species Re/Introductions: A Spatial Analysis Of Suitable Habitat For The American Marten (Martes Americana) In Northern Michigan, Joshua Michael Green

Masters Theses

The American marten (Martes americana), which was extirpated from Michigan by 1939 due to logging and trapping, has cultural significance as a clan animal to Great Lakes Native American Tribes and ecological significance as a forest health indicator. Sleeping Bear Dunes National Lakeshore (SBD) is considering reintroduction, but several factors must first be considered in assessing the habitat suitability. The goals of this study were to 1) enhance an existing habitat suitability model by including additional relevant variables, 2) conduct a spatial analysis of the habitat within the study area using a metapopulation perspective and 3) incorporate climate change predictions ...


Home Range And Habitat Use Of Santa Rosa Island Foxes (Urocyon Littoralis Santarosae), Elizabeth Marie Drake Mar 2013

Home Range And Habitat Use Of Santa Rosa Island Foxes (Urocyon Littoralis Santarosae), Elizabeth Marie Drake

Master's Theses and Project Reports

Island foxes (Urocyon littoralis) are currently listed as federally endangered on four of the six Channel Islands to which they are endemic. The Santa Rosa Island (SRI) population declined by 99% during the 1990’s due to non-native golden eagle (Aguila chrysaetos) predation and is currently the lowest fox population (~280) and density (0.86 foxes/km2) of any of the Channel Islands. The goals of this study were to assess new miniaturized GPS technology and to quantify home range and habitat use of the SRI population. This is only the second use of Global Positioning System (GPS) collars ...


The Role Of Patch Size, Isolation, And Forest Condition On Pileated Woodpecker Occupancy In Southwestern Ohio, Anna Lynn Kamnyev Jan 2013

The Role Of Patch Size, Isolation, And Forest Condition On Pileated Woodpecker Occupancy In Southwestern Ohio, Anna Lynn Kamnyev

Browse all Theses and Dissertations

No studies of Pileated Woodpeckers (Dryocopus pileatus) have been done in southwestern Ohio where agriculture is prevalent and forests are significantly fragmented. The objective of this study was to determine the forest fragment size, isolation, and structure preferred by D. pileatus for breeding habitat. I sampled 37 forest fragments varying in size and isolation for D. pileatus cavities and forest characteristics and used LiDAR remote sensing data to analyze forest complexity. I hypothesized that D. pileatus relative abundance would increase with forest fragment size, density of dead trees, and forest vertical complexity but decrease with isolation. The hypotheses that size ...


Estimated Diets, Diet Overlap, And Winter Habitat Associations Of Four Grassland Sparrows In Florida Dry Prairie, Marianne Korosy Jan 2013

Estimated Diets, Diet Overlap, And Winter Habitat Associations Of Four Grassland Sparrows In Florida Dry Prairie, Marianne Korosy

Electronic Theses and Dissertations

North American grassland birds show long-term population declines that generally exceed the declines of other bird groups. Efforts to conserve grassland birds require knowledge of diet and habitat requirements during both the breeding and nonbreeding periods of annual life cycles. This dissertation investigated sparrow habitat associations within two defined plant communities of the dry prairie ecosystem, the dry-mesic and wet-mesic prairie, for four prescribed fire treatments over two consecutive winters. Grasshopper and Henslow’s sparrows showed higher relative abundance in wet-mesic prairie and Bachman’s Sparrows were more abundant in dry-mesic prairie across all fire treatments. Abundances of Grasshopper and ...