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 77 for “"Environmental DNA"”.
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Phylogenetic inference using ancient environmental DNA
Ancient environmental DNA (aeDNA) has revolutionized our ability to describe and analyze biological communities in space and time by allowing for joint sequencing of entire ecosystems across thousands of years. However, because samples contain damaged, short fragments from multiple individuals or …
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Detection of non-native freshwater fishes using environmental DNA
… while an invader is still localised. Recently, environmental DNA (eDNA) techniques, based on detection from DNA present in water samples, have been applied to search for a range of organisms, from invertebrates in small ponds to cetaceans at sea. The aim of this thesis was to investigate the use …
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Examining uncertainty in environmental DNA analyses in freshwater lotic systems
The use of environmental DNA (eDNA) to quantify aquatic biodiversity is a rapidly emerging technique used for academic, government, and private purposes. The ease and relative low costs of taking environmental samples versus other methods of sampling makes eDNA methods an attractive choice, …
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Using environmental DNA to inform biodiversity conservation in agricultural landscapes
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-08-01
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Phylogeographic and environmental DNA analysis of the mudpuppy (necturus maculosus maculosus)
… local adaptation and evolutionary potential. Environmental DNA analysis complements traditional survey techniques and increases confidence when determining species’ range. Here, we explore the phylogeography of the mudpuppy’s western range and examine the feasibility of using eDNA to …
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Novel Molecules from Environmental DNA-Derived Type II Polyketide Biosynthetic Gene Clusters
… is the plethora of uncultured bacteria found in environmental soil samples. It is estimated that greater than 99% of bacteria from soil samples are recalcitrant to culturing in a laboratory setting. A culture-independent approach of extracting environmental DNA (eDNA) from soil and cloning it …
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Environmental DNA (eDNA) Metabarcoding: Analysis of Freshwater Macroinvertebrate Community Structure and Diversity
… macroinvertebrate sampling are being explored. Environmental DNA (eDNA) metabarcoding, which can be used to identify the taxonomic composition of entire communities, has the potential to increase both survey efficiency and taxonomic resolution. In this study, I evaluated the efficacy of eDNA …
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Sample Collection and DNA Extraction Methods for Environmental DNA Metabarcoding in Headwater Streams
<p>DNA is found to be free and ubiquitous in the environment where it is no longer associated with the source organism, and is also known as environmental-DNA (eDNA). Methods optimized for specific environments may be able supplement insight to local taxa richness. With the advent of high …
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Environmental DNA is an Effective Method to Monitor Species in Various Freshwater Habitats
<p>This research investigated the use of DNA shed from individuals into the environment (eDNA) to monitor three amphibian species and two trout species associated with habitat intersected by Interstate-90 in Snoqualmie Pass, Washington. This included a large catchment area within creeks and nearby …
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Downstream Transport of Zebra Mussel (Dreissena polymorpha) Environmental DNA and its Implications for Analysis
Collection and analysis of environmental DNA (eDNA; genetic material that organisms shed into their environment such as sloughed cells and other wastes) enables detection of organisms without direct observation, promoting earlier detection and more rapid response than conventional sampling methods. …
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Environmental influences on particle size distribution of Dreissena polymorpha environmental DNA in a Texas reservoir
Environmental DNA (eDNA) analysis provides an effective biodiversity survey method based on the analysis of genetic material shed into the environment and collected in bulk environmental samples such as water or sediment. With the expansion of eDNA applications, it is becoming increasingly …
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Comparing fine-scale temporal environmental DNA (eDNA) sampling to camera trapping for detecting mammalian carnivores
… direct handling and stress to the animals. Environmental DNA (eDNA) has emerged as a cost-effective, non-invasive, and efficient biodiversity monitoring method which has been used for both aquatic and terrestrial species. Previous mammalian eDNA-based studies have effectively detected …
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Optimization of environmental DNA collection and extraction techniques for early detection of aquatic invasive species
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-12-01
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Using Environmental DNA Surveys to Assess Green Sea Turtle (Chelonia mydas) Presence in Mississippi and Louisiana
… nature. Therefore, previously collected environmental DNA (eDNA) water samples (N=112) from Mississippi and Louisiana were screened to assess <em>C. mydas</em> seasonal presence. A species-specific quantitative PCR assay targeting a 130-base pair portion of the mitochondrial 16S ribosomal …
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The role of sampling location and depth in the performance of lake plant environmental DNA metabarcoding
… ecological research and to ecosystem management. Environmental DNA (eDNA) methods permit broad yet detailed biodiversity sampling to be performed with minimal field effort, but uncertainty remains regarding the spatial resolution necessary for effective sampling. We analyze eDNA samples from …
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Rockin’ in the eDNA world: Testing and applying environmental DNA (eDNA) for applied ecology and conservation
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-08-01
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