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Full-Text Articles in Life Sciences
Identifying Spatial Heterogeneity In And Potential Biological Consequences Of River Thermal Environments, Keith Jeffrey Fritschie
Identifying Spatial Heterogeneity In And Potential Biological Consequences Of River Thermal Environments, Keith Jeffrey Fritschie
Dartmouth College Ph.D Dissertations
Temperature is a nearly ubiquitous driver of ecological and evolutionary processes, especially for organisms whose body temperature changes with the environment. The overarching biological importance of environmental temperature and increased availability of temperature datasets have led to its inclusion in spatially continuous models of species’ performance, abundance, and distribution. However, variation in both environmental temperature and animal behavior at finer scales than captured by these models may reduce the accuracy of their scientific conclusions and conservation recommendations. Here I contribute to an improved understanding of thermal variability in river systems and its potential biological consequences for an iconic coldwater species, …
Selection Of Foraging And Nesting Sites By Black-Throated Blue Warblers: Their Relative Influence On Habitat Choice, Benjamin B. Steele
Selection Of Foraging And Nesting Sites By Black-Throated Blue Warblers: Their Relative Influence On Habitat Choice, Benjamin B. Steele
Dartmouth Scholarship
To understand why breeding Black-throated Blue Warblers (Dendroica caerulescens) select forests with dense shrubs, I assessed the value of this habitat in supplying opportunities for foraging and nesting. I predicted that these warblers would select shrub foliage for foraging if foraging substrate was important in their selection of habitat and that they would place their nests in areas of dense shrubs if nest-site availability affected habitat choice. To measure foraging and nest-site selection, I compared the proportion of foraging or nests in a particular habitat element to the availability of that element expressed as a proportion of all …