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- Benthic macroinvertebrates (1)
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Articles 1 - 5 of 5
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A Survey Of Invasive Exotic Ants Found On Hawaiian Islands: Spatial Distributions And Patterns Of Association, Camie Frandsen Martin
A Survey Of Invasive Exotic Ants Found On Hawaiian Islands: Spatial Distributions And Patterns Of Association, Camie Frandsen Martin
Theses and Dissertations
An intensive sampling of all ant species encountered on 6 Hawaiian Islands: Big Island, Maui, Oahu, Kauai, Molokai, and Lanai took place between 1988 and 1996. Species presence and absence was recorded at each site. Using remote sensing, variables were added insitu and used throughout my analysis. Species accumulation curves suggest that sampling was comprehensive. There is a significant trend between island area and species richness which validates the Theory of Island Biogeography for invasive species. Islands were found to be significantly nested by area, order, and tourism. Cluster analysis shows a link between elevation, land-use and island, and species …
Using Macroinvertebrate Community Composition To Distinguish Between Natural And Anthropogenic Sedimentation, Amanda E. Schutt
Using Macroinvertebrate Community Composition To Distinguish Between Natural And Anthropogenic Sedimentation, Amanda E. Schutt
Theses and Dissertations
Excess fine sediment from human activity is a major pollutant to streams across the U.S.; however, distinguishing human-induced sedimentation from natural fine sediment is complex. The U.S. Environmental Protection Agency recently implemented a protocol for the quantitative field assessment of human-induced sedimentation using measurements of stream geomorphology. Macroinvertebrate community composition, streambed sediment stability, and sediment composition were studied at 49 sites in the James River watershed in central Virginia. Sediment composition was found to be a stronger driver of community composition than sediment stability. Although I was not able to show that macroinvertebrate metrics were related to sediment stability independently …
A Study Of Selection On Microsatellites In The Helianthus Annuus Transcriptome, Sreepriya Pramod
A Study Of Selection On Microsatellites In The Helianthus Annuus Transcriptome, Sreepriya Pramod
Theses and Dissertations
The ability of populations to continually respond to directional selection even after many generations instead of reaching response plateaus suggests the presence of mechanisms for rapidly generating novel adaptive variation within organismal genomes. The contributions of cis regulation are now being widely studied. This study details the contributions of one such mechanism capable of generating adaptive genetic variation through transcribed microsatellite mutation. Microsatellites are abundant in eukaryotic genomes, exhibit one of the highest known mutation rates; and mutations involve indels that are reversible. These features make them excellent candidates for generating variation in populations. This study explores the functional roles …
Cardiovascular Diease And Vitamin D Deficency, Lori Nelson
Cardiovascular Diease And Vitamin D Deficency, Lori Nelson
Theses and Dissertations
Vitamin D deficiency is a common health condition affecting a significant number of individuals throughout the world. For years vitamin D has generated interest in reducing osteoporosis because of its role in bone and calcium metabolism. Recently low concentrations have been linked to the development of several cardiovascular diseases such as hypertension, heart failure, atherosclerosis and peripheral arterial disease. The purpose of this article is to examine evidence regarding vitamin D deficiency and cardiovascular disease and provide advanced practice nurses with recommendations regarding supplementation in those individuals with vitamin D deficiency and risk for development of cardiovascular disease.
Exploring The Social Determinants Of Sexually Transmitted Disease And High-Risk Sexual Behaviors, River Pugsley
Exploring The Social Determinants Of Sexually Transmitted Disease And High-Risk Sexual Behaviors, River Pugsley
Theses and Dissertations
Abstract 1: A multi-level assessment of disproportionate population sex ratios and high-risk sexual behaviors among STD clinic patients Low male-to-female sex ratios in a population may influence high-risk sexual behaviors, such as multiple sex partners and inconsistent condom use, which facilitate the transmission of STDs. This study used multi-level modeling to assess whether population sex ratios were associated with these two individual-level behaviors. All analyses were stratified by gender. Interview data were collected from patients (N = 9,203, 48% male) attending participating STD clinics. Interviews included information on socio-demographics and sexual behavior, including number of sex partners in the previous …