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Beta Diversity Provides Evidence Of Niche Based Assembly In Temperate Forest Understory Assemblages Of Mississippi, David Steven Mason
Beta Diversity Provides Evidence Of Niche Based Assembly In Temperate Forest Understory Assemblages Of Mississippi, David Steven Mason
Theses and Dissertations
Assembly is a process that shapes the abundance and identity of species in a community. Niche and neutral theory explain assembly processes with mechanisms driven by either species differences, or functional equivalence and stochastic dispersal. In 2017 I sampled vegetation and environmental variables at 59 sites in the Noxubee National Wildlife Refuge and Tombigbee National Forest of Mississippi to explore forest understory community assembly. I developed and assessed a framework of predictions concerning general patterns and underlying mechanism. Evidence of dispersal limitation and functional equivalence were expected under neutral theory. Local environmental characteristics, surrounding landscape variables, and fire were significant …
The Effect Of Environmental Perturbations On The Plant Phyllosphere Microbiome, Bram W. Stone
The Effect Of Environmental Perturbations On The Plant Phyllosphere Microbiome, Bram W. Stone
Electronic Theses and Dissertations
Applying ecological concepts to microbial communities has proved to be challenging, often revolving around the relative importance of stochastic and deterministic processes applied heterogeneously across the habitat in time or space. The phyllosphere is the aboveground surface of plants on which microbial communities, composed primarily of Bacteria, but also including Archaea and microbial eukaryotes, exist and is characterized by stochastic immigration balanced with strong selective forces. Variation in bacterial community composition was characterized across space and time, with special attention given to the exposure of phyllosphere communities to rain as a plausible mechanism of ecological disturbance. Bacterial communities were characterized …
Examination And Characterization Of Brook Trout Ecology Before And After A Broad Scale Disturbance Event In Headwater Streams Of West Virginia, Usa, Ross Gilbert Andrew
Examination And Characterization Of Brook Trout Ecology Before And After A Broad Scale Disturbance Event In Headwater Streams Of West Virginia, Usa, Ross Gilbert Andrew
Graduate Theses, Dissertations, and Problem Reports
No abstract provided.