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 29 for “"Dreissena"”.
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Untersuchungen zur Einsatzmöglichkeit der Dreikantmuschel Dreissena polymorpha als biologischer Filter und Wasserhygienemonitor
Dreikantmuscheln (Dreissena polymorpha) sind aufgrund ihrer speziellen Ernährungsweise in der Lage, erhebliche Wassermengen unterschiedlichster Qualität sehr effektiv zu filtrieren und dabei zu reinigen (Biofilter). Ziel der Arbeit waren Einschätzungen zum Leistungsumfang, der Nutzung und von …
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Downstream Transport of Zebra Mussel (Dreissena polymorpha) Environmental DNA and its Implications for Analysis
… concentration, using invasive zebra mussels (Dreissena polymorpha) in Texas reservoirs as a case study. My objectives were 1) define the rate of eDNA decline during downstream transport and 2) evaluate how abiotic factors of the river affect eDNA concentration during transit downstream. I …
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Environmental influences on particle size distribution of Dreissena polymorpha environmental DNA in a Texas reservoir
… natural settings, I analyzed the PSD of invasive Dreissena polymorpha (zebra mussels) by taking four weekly samples at four locations in Canyon Lake, a central Texas reservoir. I sequentially filtered replicate water samples through 12, 8, 5, 3, 1, and 0.2 μm filters followed by an ethanol …
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Post-settlement processes and early life history dynamics of zebra mussels (Dreissena polymorpha) in the Hudson River estuary
… dynamics of open populations. The zebra mussel, Dreissena polymorpha, in an estuarine habitat such as the Hudson River, provides an ideal system for examining the early life history period and the effect of early life history processes on population dynamics. My dissertation research focuses on …
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Sediment toxicity and bioaccumulation of toxicants in the zebra mussel, Dreissena polymorpha, at Times Beach, Buffalo, New York
… study utilizing the zebra mussel, <i>Dreissena polymorpha</i>, at the Times Beach Confined Disposal Facility (CDF), located in Buffalo, New York. Concentrations of the selected contaminants (polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and the following …
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CYTO-GENOTOXIC EFFECTS OF SOME PHARMACEUTICAL AND PERSONAL CARE PRODUCTS (PPCPS) ON THE FRESHWATER BIVALVE ZEBRA MUSSEL (DREISSENA POLYMORPHA)
… IBU) on the freshwater bivalve zebra mussel (Dreissena polymorpha). This mussel was chosen as biological model because the invertebrates constitute more the 90% of living species, they play an important role in freshwater ecosystems and are particularly susceptible to environmental stressors. …
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Control strategies for the zebra mussel, Dreissena polymorpha, and the Asian clam, Corbicula fluminea: comparative stress responses and nontarget impact
… of water intake systems by the zebra mussel, Dreissena polymorpha, the comparative response of zebra mussels and the Asian clam, Corbicula fluminea, to a surfactant -based chemical control agent, the nontarget impact associated with the control agent, and the use of the Asian clam as a …
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Environmental Stressors: Pathways Of Exposure And Aquatic Invertebrate Response
… tolerance using two invasive mussel species, <em>Dreissena bugensis</em> and <em>D. polymorpha</em>. Mussels were evaluated for OS via lipid peroxidation and catalase activity following exposure to four stressors (e.g., high densities, temperature, hypoxia, and PCBs) both alone and in combination. …
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Load reduction and invasive mussel effects on eutrophication dynamics in Saginaw Bay, Lake Huron
… Lakes in the late 1980s. Zebra mussels (<italic>Dreissena polymorpha</italic>) spread quickly into shallow, hard-substrate areas; quagga mussels (<italic>Dreissena rostriformis bugensis</italic>) spread more slowly and are currently colonizing deep, offshore areas. These mussels have the …
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Prevention, Control and Eradication of Aquatic Invasive Species
… included eight invasive macrophyte, Quagga (Dreissena bugensis) and Zebra (Dreissena polymorpha) mussels, Asian clam (Corbicula fluminea), killer shrimp (Dikerogammarus villosus), and bloody red shrimp (Hemimysis anomala). Each species was independently exposed to aquatic disinfectants or …
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Intensive sampling and comparison of methods in detection of non-indigenous species
… of a newly introduced NIS, zebra mussels (Dreissena polymorpha), in Lake Winnipeg. Zebra mussel presence can be determined by the presence of their larvae (veligers). I hypothesized that veligers will be detected in the south basin where they were previously reported, but not in the north …
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The Consequences of Non-Native Species Invasions on the Contemporary and Historic Trophic Ecology of Native Sport Fish in a Lake Michigan Embayment
… establishment of dreissenid mussels (<em>Dreissena spp.</em>) in Lake Michigan has strongly altered energy flow by sequestering nutrients in nearshore benthic habitats. Despite these ecosystem changes, little is known about their influence on resource partitioning in nearshore fish …
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Evaluating non-point source microplastic pollution and its impact on biota in the Huron River
… experiments exposing zebra mussels (<em>Dreissena polymorpha</em>) in microcosms to microplastics and pharmaceuticals in a factorial design. On average, mussels ingested 57.5 ± 35.2 MP/individual during the 24-day experiment. Results from this experiment indicate that exposure to …
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Waterfront spectacular
… lamprey (Petromyzon marinus) and zebra mussel (Dreissena polymorpha) and asserts that making work visible, in public, is spectacular—as noted, “a visible deviation from the norm intended to provoke a response.” In conclusion, this thesis discusses how instrumentalizing spectacle in design can …
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Invasive non-native species and the management and exploitation of freshwater ecosystems
… by quantifying the impacts of quagga mussels (Dreissena rostriformis bugensis) in UK reservoirs. I identified that impacted sites demonstrated: an increase in overall reactive silica and soluble reactive phosphorus concentrations; reductions in overall diatom, cyanobacteria and Aphanizomenon …
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Spatially distributed bioaccumulation risk analysis: a GIS-based tool and a case study of polychlorinated biphenyls in the Great Lakes
… based on concentrations in zebra mussels (Dreissena polymorpha). Zebra mussels have a great fi ltration capacity and high bioconcentration rates, increasing the bioavailability of contaminants for predator species. PCBs concentrations in different-level predators are predicted. Furthermore, …
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Foraging ecology, sexual selection, and divergence in sunfish (Lepomis spp.)
… in diet following the invasion of zebra mussels (Dreissena polymorpha), consuming considerably more zebra mussels and fewer benthic invertebrates than before the invasion. These results contribute to a growing body of evidence that foraging ecology and its relationships with both disruptive …
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Aquatic community response to Zequanox®: a mesocosm experiment
Zebra and quagga mussels (Dreissena spp.) are European freshwater molluscs that have invaded most major inland water systems across North America, resulting in billions of dollars in damages and losses to fisheries, recreational water use, infrastructure, and industry each year. Zequanox®, a …
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Big data for the benefit of aquatic invasive species management
… to the spread of two prolific invaders (e.g., Dreissena and Myriophyllum species). Next, identifying lakes that are vulnerable to invasion provide an opportunity for early detection and intervention. I used machine learning models to predict the presence of five aquatic invaders that have …
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