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An Examination of Stream Fishes at 3 Levels: Species-Area and Environmental Interactive Influences on Fish Species Richness, Stream Type Influences on Assemblage Membership, and Variation in Weight-Length Parameters by Stream Type & Fish Trait
(2016-05-05)
Obtaining an understanding of the multi-scale influences on species richness is of concern not only to theoretical development but to building an understanding of potential mechanisms of rapid species loss. To address ...
Factors affecting safe-guarding of the federally endangered Schwalbea americana L. (Orobanchaceae)
(2016-12-20)
Schwalbea americana L. (American chaffseed) is a federally endangered hemi-parasitic plant (USFWS 1992). Its tendency to persist with limited recruitment and threats to its habitat make it vulnerable to extirpation. ...
The Effects of Forest Treatments on Ground – dwelling Herpetofauna and Macroarthropods in Longleaf Pine Forests of South Alabama
(2016-08-04)
The purpose of this thesis was to examine long-term effects of forest treatments on captures of herpetofauna, habitat structure, and relative abundance of macroarthropods. In chapter 1, I described my general research ...
The effects of male philopatry on reproductive behaviors and fitness in Columbian ground squirrels (Urocitellus columbianus)
(2016-11-09)
Decreased fitness is a consequence of inbreeding in many species. As a result, a variety of behavioral mechanisms, such as dispersal, are employed be mammals to avoid mating with relatives. Columbian ground squirrels ...
Do seasonal changes in developmental temperature have season-specific consequences in a lizard?
(2016-12-09)
Rapidly changing environmental conditions can reduce the fitness of a phenotype. Phenotypic plasticity can solve this problem by enabling individuals to develop phenotypes that are suited to their immediate environment. ...
Effects of dietary protein intake on fecal and milk microbiota
(2016-08-03)
Microorganisms in milk have traditionally been assumed to be contaminants, but recent data suggest that these microbial communities naturally reside in milk and may contribute to vital maternal effects. Investigators have ...
Relationships between benthic macroinvertebrate assemblages and the physical environment in sandy SE streams, with emphasis on stream geomorphology, hydrology and watershed disturbance
(2016-05-05)
Biodiversity is predicted to decline over the next 100 years, and stream ecosystems are
predicted to be impacted by landuse change. This predicted decline highlights the need to
understand sand-bed streams and biotic ...
Evolution of Miniaturization and Paedomorphism in Fishes of the Order Cypriniformes
(2016-08-05)
The order Cypriniformes (carps, minnows and their allies) is a morphologically diverse freshwater fish clade numbering over 4000 species. One species is the model organism zebrafish, Danio rerio. Cypriniform fishes have ...
Determining the spatial and seasonal influences of microbial community composition and structure from the Hawaiian anchialine ecosystem
(2016-12-09)
Characterized as coastal bodies of water lacking surface connections to the ocean but with subterranean connections to the ocean and groundwater, habitats belonging to the anchialine ecosystem occur worldwide in primarily ...
Diversity and Conservation of the Southern Cavefish, Typhlichthys subterraneus
(2016-07-29)
The Southern Cavefish, Typhlichthys subterraneus, is one of the most fascinating stygobionts of the Amblyopsidae due to undescribed diversity within it. I investigated aspects of morphological and molecular diversity for ...