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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
81

Habitat Use By The Southeastern Beach Mouse (peromyscus Polionotus Niveiventris) At Cape Canaveral Air Force Station, Florida

Simmons, Kathryn 01 January 2009 (has links)
Successful recovery of the federally threatened southeastern beach mouse (Peromyscus polionotus niveiventris) depends in part on an understanding of their habitat requirements. I studied habitat use by beach mice at Cape Canaveral Air Force Station, Florida from March 2005 until March 2006. I livetrapped six grids, three on coastal dunes and three within scrub located inland from the coast. On each grid and trap station, I quantified the extent of bare ground, woody vegetation, non-woody vegetation, height of vegetation, and percentage of coarse sand in the surface soil. I assessed trap success relative to these habitat variables using linear and multiple regression, correlation, and ordination. Significantly higher numbers of mice were captured in the scrub habitat relative to the coastal habitat. Linear regression of trap success against the habitat variables did not reveal any significant relationships at the level of grids. A non-metric multidimensional scaling model was designed to capture the vegetation heterogeneity at the trapping sites and clarify the results. This methodology identified a predominantly dune and predominately scrub cluster of trap sites. A bubble plot showed higher densities of beach mice using the scrub habitat types. These results suggest beach mice are selecting for those habitat variables defined by the ordination: higher vegetation height, more woody vegetation types, less bare ground, and less heterogeneity.
82

Peromyscus Population Dynamics and Seed Predation of Lupinus Perennis in and Near Oak Savannas of Northwest Ohio

Kappler, Rachel Hope 29 July 2009 (has links)
No description available.
83

FACTORS AFFECTING THE NEGATIVE DENSITY AREA RELATIONSHIP OF THE WHITE-FOOTED MOUSE (PEROMYSCUS LEUCOPUS)

Wilder, Shawn Michael 07 July 2003 (has links)
No description available.
84

The Effects of Predation and Supplemental Food on Foraging and Abundance of White-Footed Mice (<i>Peromyscus Leucopus</i>) in Relation to Forest Patch Size

Marcello, Gregory James 05 August 2005 (has links)
No description available.
85

Geographical heterogeneity and landscape-scale genetic patterns in Great Lakes populations of <i>Peromyscus</i>

Taylor, Zachary S. 17 August 2010 (has links)
No description available.
86

The Effects of Bot Fly (<i>Cuterebra Fontinella</i>) Parasitism on the Ecology and Behavior of the White-Footed Mouse (<i>Peromyscus Leucopus</i>)

Cramer, Michael John 03 April 2006 (has links)
No description available.
87

Psychobiological factors alter health outcome

Glasper, Erica Renee 14 July 2006 (has links)
No description available.
88

Psychobiological factors alter health outcome

Glasper, Erica Renee, January 2006 (has links)
Thesis (Ph. D.)--Ohio State University, 2006. / Available online via OhioLINK's ETD Center; full text release delayed at author's request until 2009 May 24
89

Identifying Environmental Factors Driving Differences in Climatic Niche Overlap in Peromyscus Mice

Russell, Vanessa 14 August 2019 (has links)
No description available.
90

The Cascading Effects of Invasive Grasses in North American Deserts: The Interactions of Fire, Plants, and Small Mammals

Bowman, Tiffanny R. 01 March 2015 (has links) (PDF)
The landscapes of the Great Basin and Mojave Deserts are changing due to plant invasion. Highly flammable invasive grasses increase the size and frequency of fire causing a cascade of effects through the plant and animal communities. One of the most influential animal groups in desert systems is small mammals. We sought to learn how small mammals are impacted by fire and how their influence on the plant community differs between burned and unburned habitat. Small mammals did not have higher rates of mortality as a direct result of a controlled burn. In the Great Basin, there were short-term reductions in abundance, richness, and diversity of the small mammal community in burned plots. In the Mojave, species richness and diversity increased in burned plots shortly after fire and no abundance differences were detected. These results correspond with our prediction based on the dominant small mammal species at each site. Small mammals are primarily granivores; however, they also have strong impacts on the plant community via folivory. We tested for small mammal impacts on seedling survival in burned and unburned habitat. Small mammal access, burned vs. unburned habitat, and plant species were all important determinants of survival. Small mammals greatly reduced survival at both sites in burned and unburned habitat and often had a stronger impact in unburned than burned plots. Accounting for small mammal folivory may be a crucial step in successful post-fire rehabilitation. Finally, we used seed trays to test how small mammals influence the persistence of seed on the landscape. Small mammals reduced persistence of an invasive and native plant species in the Great Basin in 2012, yet a year later when small mammal abundance was reduced, no small mammal effect was observed. In the Mojave, persistence was reduced for the majority of species both years of the study. Small mammals did not appear to avoid seed of invasive plant species as we had predicted and may be important consumers reducing the reproductive potential of these invaders. If small mammals do prefer non-native seedlings over natives and are also consuming non-native seed, they may be greatly reducing the presence of non-natives both on the unburned landscape as well as after fire. Non-native consumption by small mammals could aid in the biotic resistance of these desert ecosystems. This research further enforces the important role that small mammals play as consumers, dispersers, and regulators of the plant community.

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