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.
Results
Showing 1 to 20 of 44 for “"environmental DNA (eDNA)"”.
-
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 …
-
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 …
-
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
-
e(lasmo)DNA : the role of environmental DNA (eDNA) analysis in marine fish biodiversity assessment, with special focus on elasmobranchs
… shark) detection is inherently difficult. Environmental DNA metabarcoding, based on the retrieval of genetic traces (skin cells, metabolic waste, etc.) naturally released in the environment, is emerging as a non-invasive method for the detection and identification of rare and elusive …
-
Assessment of mudpuppy (Necturus maculosus) presence along the St. Clair-Detroit River System using environmental DNA and occupancy modeling
… they could be a gauge for restoration success. Environmental DNA (eDNA) and occupancy modeling were used to determine best detection practices for this cryptic species. Mudpuppy eDNA was detected at all known mudpuppy sites with the addition of one site. Occupancy was highest at shoreline …
-
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 …
-
Investigating the Utility of Environmental DNA Analysis for the Monitoring and Management of Mid-Atlantic Alosine Fishes
Environmental DNA (eDNA) tools can address gaps in fish assessment data while reducing the cost and the impact of sampling on threatened anadromous alosine fishes in Chesapeake Bay. Here, I tested the ability of high-frequency eDNA sampling of river herring to predict fish abundances from …
-
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 …
-
Intensive sampling and comparison of methods in detection of non-indigenous species
… flow cytometry and microscopy (FlowCAM), and environmental DNA (eDNA). I detected veligers throughout Lake Winnipeg, even in the north basin, with varying abundances. As expected, veliger abundance was highest in the south, and very low in the north. Abundance and prevalence were significantly …
-
Road Salt Runoff - Impact on Macroinvertebrates and Water Quality
… Additionally, the potential of molecular method, environmental DNA (eDNA), was investigated by comparing the results from kick sampling to those of the eDNA. The results from the study did not show any significant differences between sites affected by road salt runoff and those not. Additionally, …
-
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 …
-
Development and Employment of Environmental DNA Methods for the Detection of Bull Sharks (<i>Carcharhinus leucas</i>) in a Freshwater and Estuarine Interface in the Mobile-Tensaw Delta and Mobile Bay, Alabama
… and refuge; their ability to withstand changing environmental conditions may mean they are linking ecosystems through their habitat usage and movements. Rather than setting nets or attaching acoustic monitoring devices, which can be expensive, time-consuming, and invasive, the analysis of …
-
The spread of invasive virile crayfish (Faxonius virilis) in the current river drainage of Missouri, U.S.A.: Hybridization and potential impacts on detection and management
… the 1980s. Additionally, we wanted to develop an environmental DNA (eDNA) assay to aid in detection of F. virilis. While developing the F. virilis-specific eDNA assay, we noticed a discordance between the phenotype and mitochondrial DNA barcode of some native F. punctimanus specimens. As evidenced …
-
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 …
-
Development and Use of an Environmental DNA Tool to Monitor Recovery of the Critically Endangered Smalltooth Sawfish, Pristis pectinata, in the Northwest Atlantic
… SWFL is not currently well understood. Targeted environmental DNA (eDNA) surveys were chosen to assess the occurrence of <em>P</em>. <em>pectinata</em> in these formerly inhabited waters due to the rapid, cost-effective, and non-invasive advantages of this technique over traditional survey …
-
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. …
-
A CREDIBILITY, RELEVANCE AND LEGITIMACY FRAMEWORK ANALYSIS OF ENVIRONMENTAL DNA FROM THE POINT OF VIEW OF POTENTIAL END-USERS
… to successfully accomplish fast and reliable environmental information is to make use of advanced technologies, such as sampling genetic material shed by organisms into the surrounding environment, also known as environmental DNA (eDNA). While there are many studies on the scientific and …
-
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, …
-
16S rRNA sequence analysis of silver carp microbial community in eDNA water samples
… conducted in a closed system taking triplicate environmental DNA (eDNA) water samples from 150 L tanks containing set numbers of invasive Silver Carp. Analysis eDNA samples typically involves only targeting the species of interest. However, eDNA detection alone cannot undeniably confirm the …
Page 1 of 3