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Economics Of Managing Loblolly Pine Plantations For Increased Wildlife Biodiversity, Melissa Griffith
Economics Of Managing Loblolly Pine Plantations For Increased Wildlife Biodiversity, Melissa Griffith
Electronic Theses and Dissertations
The goal of this thesis was to identify the differences between the costs incurred and revenues gained from managing loblolly pine (Pinus taeda) plantations in East Texas for strictly timber production or a combination of timber production and wildlife biodiversity. Management regimes evaluated had varying planting densities, thinning frequency and intensities, prescribed burn intervals, and site indices. Economic analyses used to evaluate management regimes over a range of nonindustrial private landowner (NIPF) alternative rates of return (ARRs) and site indexes were net present worth, land expectation value, and equal annual annuity. These economic analyses demonstrated that altering management …
Delineating Metrics Of Diversity For A Snake Community In A Rare Ecosystem, Zachary John Marcou
Delineating Metrics Of Diversity For A Snake Community In A Rare Ecosystem, Zachary John Marcou
Electronic Theses and Dissertations
Snakes are among the least understood vertebrate groups despite their considerable diversity. A diverse community of snakes in an ecosystem can indicate a complex habitat structure that is capable of supporting a robust assemblage of other biota. I used remote photography arrays (RPA) to quantify metrics of diversity for the snake community occurring in a ~7,000–ha tract of contiguous Longleaf Pine (Pinus palustris) Savanna within the Angelina National Forest (ANF; Angelina and Jasper Cos., TX), over the course of two consecutive snake activity seasons. I quantified the snake species richness, Shannon diversity, and Shannon equitability for the snake community in …