Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 26 for “"molecular ecology"”.
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Molecular ecology of marine isoprene degradation
Isoprene is an atmospheric trace gas whose emissions to the atmosphere are roughly equal to that of methane. It is highly reactive and has the potential to affect climate through a variety of interactions in the atmosphere, including the formation of ozone. In the marine environment alone, algae …
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Molecular Ecology and Evolution of Fibrobacter and Its Cellulases
Fibrobacter is a major genus of fiber digesting bacteria of the bovine rumen. It is the only Gram ($-$) anaerobic cellulolytic bacteria identified at present. Strains of Fibrobacter are indistinguishable from each other using traditional phenotypic criteria. Of 21 substrates examined, only …
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Molecular ecology and hierarchical models elucidate chronic wasting disease dynamics
… for the genetics of Prnp in order to examine its molecular evolutionaryhistory, and the likely force of natural selection acting on it, by analyzing genetic diversity both within and between species within Class Mammalia. We accessed Prnp nucleotide sequences of a large number of mammalian species …
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Resolving the molecular ecology of marine microbial eukaryotes with metatranscriptomes
… sequenced metatranscriptomes to resolve the molecular ecology of in situ marine microbial eukaryote communities. In Chapter 1, I studied a diel-resolved metatranscriptome time series in the North Pacific Subtropical Gyre. I developed a method for assembly, annotation, and quantification of …
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Molecular ecology of hawksbill turtles Eretmochelys imbricata in the Seychelles
Molecular genetics are an invaluable tool in whole-organism biology, allowing the indirect investigation of life history traits and evolutionary processes that are otherwise unobservable. In this thesis, I apply molecular genetic techniques to the study of the hawksbill sea turtle Eretmochelys …
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The molecular ecology of Vaccinium macrocarpon Aiton, the American cranberry
Cranberry (Vaccinium macrocarpon), a commercially grown evergreen dwarf shrub, is a dominant taxon in temperate bogs in North America. It spreads clonally by runners, and reproduces sexually predominantly by self-fertilization on upright stems. The objective of this project was to investigate …
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An icon of conservation biology: molecular ecology of greater prairie chicken (Tympanuchus cupido pinnatus) in Illinois
Made available in DSpace on 2012-02-01T00:54:10Z (GMT). No. of bitstreams: 3 Mussmann_Steven.pdf: 683774 bytes, checksum: 783a5d90b1d907163a8ff0be4f4ae602 (MD5) license.txt: 4065 bytes, checksum: 70e81c1b4097a058a975809a4d7b50aa (MD5) Mussmann_Steven.docx: 961193 bytes, checksum: …
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Molecular ecology and fitness of striped (Stenella coeruleoalba, Meyen, 1833) and common (Delphinus delphis, Linnaeus, 1758) dolphins
In this study the molecular ecology and fitness of two Delphinidae species, the striped dolphin (Stenella coeruleoalba) and the common dolphin (Delphinus delphis), were investigated in the Mediterranean Sea and Atlantic Ocean. This thesis provides a comparative assessment of the striped and the …
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Morphometrics, molecular ecology and multivariate environmental niche define the evolutionary history of the Western Rattlesnake (Crotalus viridis) complex
… within the complex. The three datasets (molecular, morphological, and ecological) were coalesced using supertree methodology to derive a single hypothesis that supported two distinct lineages but with obscured subspecific relationships. They were also utilized in crosshair classification …
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Molecular ecology of plant cell wall hydrolysis by mixed cultures of Ruminococcus albus 8, Ruminococcus flavefaciens FD-1 and Fibrobacter succinogenes S85
A total of 6 specific oligonucleotide probes were designed for the Ruminococci, 3 targeted to sites on 16S rRNA of Ruminococcus albus and 3 targeted to sites on 16S rRNA of Ruminococcus flavefaciens. A subspecies probe for Fibrobacter succinogenes S85 (Stahl et al., 1988) and a eubacterial kingdom …
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Genetic Structure of the Copperhead (Viperidae: Agkistrodon Contortrix Mokasen) at its Most Northern Distribution
<p>The focus of molecular studies in North American pitvipers has been on species that warrant conservation concern, such as Timber (<em>Crotalus horridus</em>) and Massasauga rattlesnakes (<em>Sistrurus catenatus</em>). Scant effort has been directed towards the molecular ecology of the Copperhead …
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Eukaryotic Parasites of Toxic and Bloom-forming Diatoms: Molecular insights in their diversity and physiology
… counterpart. Only with the recent application of molecular ecology methods, we have started to gain deeper insights in the structure of complex microbial communities where heterotrophic protists, and especially putative parasites, resulted as an abundant and diverse component in both aquatic and …
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Population Structure of Lake Whitefish (Coregonus Clupeaformis) on Multiple Spatial Scales: Transitioning to a Genomics Approach
… nucleotide polymorphisms (SNPs) in the field of molecular ecology, and to explore the population structure of important fish species. Microsatellite markers were the gold standard for two decades and were used to investigate the population structure of lake and round whitefish (Coregonus …
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Illuminating the Drivers of Genomic Diversification in Lamprologine Cichlids of the Lower Congo River
… directionality. This study was published in Molecular Ecology in May 2022.</p> <p>To further understand the drivers of speciation in this system, I explore the impact of extrinsic forces, such as paleoclimate changes, on the timing of diversification and gene flow patterns across these …
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Time-of-Flight Mass Spectrometry to Characterize Inorganic Coordination Complexes and Cyanobacteria
… MALDI screening method could find application in molecular ecology studies of cyanobacteria. Peptide mass fingerprinting is used to monitor the isolation of the water stress protein from N. commune. The protein is produced by recombinant growth in E. coli in order to assess the role of Wsp in the …
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Mapping pathogen distributions and population connectivity of a sentinel Arctic species, the polar bear (Ursus maritimus) across a changing North American Arctic
… The focus of my dissertation was to develop molecular tools to monitor polar bear populations and to promote co-management through non-invasive and harvest-based sampling. More specifically I aimed to: (i) Delineate polar bear population structure using genome-wide panels of Single Nucleotide …
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Conservation genetics of African elephants
… understanding of historical elephant population ecology and genetics. Here I show that contemporary West African forest elephant populations have limited genetic diversity compared to the genetic diversity found in historical populations. Chapter 4 highlights the need for proactive and …
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The Fungal Connection: Characterizing the Ectomycorrhizal Community and Belowground Response to Restoration Treatments in Northern Mississippi.
… to ensure restoration efforts succeed. Using molecular methods, this research aimed to identify the ECM fungal community in a restoration project in northern Mississippi, comparing the belowground fungal community on plant roots between replicated control and treatment plots. We also measured …
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Phylogeography of Oculina Corals and their Algal Symbionts: Insights into the Origin and Expansion of Oculina Patagonica in the Mediterranean
In a world of rapidly changing environmental conditions, species must effectively respond to their changing habitat or risk extinction. The goal of my dissertation is to elucidate the origins and mechanisms underlying the recent successful population expansion of the invasive coral Oculina …
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