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 46 for “"aquatic plants"”.
-
Survey of the Aquatic Plants of the Jack's Fork River, Missouri
A survey of the aquatic plants of the Jack's Fork River was conducted. The time frame of this study was three years, from 1991 through 1993. An annotated plant list including 51 taxa representing 35 genera and 25 families was generated. Thirteen records for Shannon and Texas Counties are documented …
-
Understanding the role of aquatic plants in stormwater management pond performance in Oshawa, Ontario, Canada
… natural, they are typically colonized by aquatic plants. Although submergent and emergent vegetation is common in SMPs, not much is known about their potential impacts on SMP performance. The aim of my thesis project was to investigate the effect of aquatic plants on the water treatment …
-
Biomonitoring of herbicide impact using aquatic macrophytes : laboratory and field studies for the evaluation of potential toxicity on aquatic plants
Die Bewertung des Herbizideinflusses auf Wasserpflanzen erfolgt zur Zeit anhand von Ergebnissen aus Versuchen mit der monokotylen Lemna sp. und mit Algen. Eine alleinige Einschätzung der Herbizidtoxizität aufgrund solcher Testsysteme birgt gewisse Unsicherheiten, da für einige Herbizide, wie z.B. …
-
Modeling agricultural recycling systems for system size and economic potential
… particularly for rural areas. Livestock waste, aquatic plants, fish, and feed for livestock might seem to be unrelated at first glance, but when combined in a modular production approach they become an effective approach to recycling water and biomass along with developing rural economics. A …
-
Propagation of Vallisneria Americana (MICHX): Vegetation Management In South Carolina Piedmont Reservoirs
<p>Aquatic plant communities in reservoirs can support biological and chemical processes that are typical of those found in more natural settings which may benefit reservoir managers and users through the associated enhancements that aquatic plants can bring to reservoir purposes. Reservoirs are …
-
Investigating the effects of pre-treatment of tropical seaweeds and freshwater macrophytes for bioenergy production
… inoculum in the anaerobic digestion of selected aquatic plants. The use of sewage anaerobic sludge was used as a reference. Findings show that using the non- adapted anaerobic fresh sludge produced higher methane in L. digitata 378 ml/g VS added followed by E. crassipies 275 ml/g VS added, P. …
-
Aquatic Plant Communities and Invertebrates in a Prairie Pothole During Duck Brood Rearing
More than 1,100 samples of aquatic plants and associated invertebrates were collected in a prairie wetland. Sampling was done weekly throughout the duck brood rearing season. Linear regression revealed a 4 to 100 ratio of animal to plant biomass (R²=0.488). Comparatively high degrees of association …
-
Using high resolution satellite imagery to map aquatic macropyhtes on multiple lakes in northern Indiana
… need to be able to quickly and accurately map aquatic plants in freshwater lakes and ponds for regulatory purposes, to monitor the health of native species and to monitor the spread of invasive species. Site surveys and transects are expensive and time consuming, and low resolution imagery is …
-
Effects of Various Pesticides on Hyalella Azteca
… Hyalella feeds upon epiphytic growths on rooted aquatic plants, on dead organic material in the substrate, and on living plants, particularly filamentous green algae (Cooper, 1965). Laboratory investigations indicate that several aquatic invertebrates, especially several members of the order …
-
Assessing interactions between nutrients and aquatic toxicity : influences of nitrogen and phosphorus on ionic silver toxicity to the aquatic macrophyte Lemna gibba.
Though nutrients and silver often co-occur in aquatic ecosystems, the combined effects of these environmental stressors on aquatic plants are poorly understood. Such coexposures are important because nanosilver is increasingly released to the environment, and recent studies indicate that the …
-
The role of aquatic vegetation on oscillatory flows and sediment transport
… wetlands along with their ecological services. Aquatic vegetation drives morphological changes by modifying flow and sediment transport within and around vegetated regions. The lack of accurate suspended sediment predictors for vegetated oscillatory flows compromise our capabilities for the …
-
Algal Biodiversity Survey of the Middle Chattahoochee River Using DNA Metabarcoding
<p>Aquatic plants play vital roles in water systems by providing ecological services, and one group that is understudied is algae. Algae play a crucial role in water systems as bioindicators and primary producers. They can be challenging to identify with the naked eye, so researchers have been …
-
Reverse genetic approaches reveal gene redundancy in Arabidopsis anthers
When aquatic plants migrated to land 500 million years ago, they were met with harsh conditions associated with terrestrial life, such as dry air, high radiance light, and high effective gravity. Early plants of this time period underwent rapid evolution to develop novel plant traits to mitigate …
-
Water quality and productivity changes associated with the liming of a soft water lake
… to the usurping of available nutrients by higher aquatic plants. Low concentrations of available phosphorus was considered to be the major chemical factor limiting biological production. No significant growth increments were evident for any species of fish of any age that could be attributed …
-
Fish Community Structure and Water Quality Assessment (Index of Biotic Integrity) of the San Marcos River, Texas
… of a refugia for endemic and introduced aquatic plants and animals. Over the entire length of the river, fifty-three species of fishes were collected. Due to the unique characteristics of the San Marcos River's headwaters, eight species were collected only in the headwaters of the river, …
-
Nutrient Transport in the Lake Poinsett System
… in Lake Poinsett, relative to the needs of aquatic plants in the lake, are in a state of super-saturation. The advanced degree of eutrophication in Lake Poinsett is ascribable to the large annual nutrient load entering and retained by the lake.
-
Exploring the potential of duckweed (Lemnaceae) as a circular protein crop on agri-food industry wastewaters
… sources of protein. Duckweeds are small floating aquatic plants known for their rapid growth and high dry weight protein content. Duckweed cultivation on agri-food wastewaters offers a potential solution for their valorisation through simultaneous phytoremediation and the production of a …
-
Behavior, Nest Site Selection and Success of Black Terns (Chlidonias niger)
… between the average percent cover of submerged aquatics and floating aquatics near nest sites and random points, which suggests that Black Terns may be avoiding areas with high levels of floating and submerged aquatic plants. While <em>Phragmites</em> and invasive cattails can degrade the …
Page 1 of 3