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 19 of 19 for “"Filamentous algae"”.
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Filamentous algae as a nutrient scrubber for agricultural drainage treatment
Filamentous algae nutrient scrubbers (FANS) have potential as a novel on-farm treatment system to remove and recover diffuse nutrients from agricultural drainage water. FANS use attached filamentous algae that grow and assimilate nutrients from the water which are removed when algal biomass is …
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Water Quality Spatial Heterogeneity in Wastewater Stabilization Ponds at Elevated pH
… pH levels in the summer months due to excessive algae growth. In efforts to comply with a regulated effluent pH of 9.5, the township commissioned this research group at Queen’s University to provide a scientifically proven solution to address this issue. Three studies are presented in this thesis …
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Algal control and prevention technologies for Lake Diefenbaker irrigation canals
… of the canals is hindered by the growth of filamentous algae. The filamentous algae are a nuisance and block pumps, making it difficult for water to be distributed to all the desired locations within the province. Currently, a synthetic chemical, Magnacide H, is utilized to control the …
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Experiments to culture juvenile freshwater mussels in small tanks, floating containers and sediment beds
… experiments combined water flow, inoculation of algae, fertilization, lighting and a pre-operation phase. Experimental results suggested that indoor floating container culture was a useful method to rear newly metamorphosed juvenile mussels, and the indoor sediment bed culture technique may also …
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Genesis And Environmental Position Of The Algal Mounds Of The Stonehenge Formation
… upward growth structures, stromatolites, and filamentous algae. Facies distribution and thickness relationships of the Stonehenge show that the mounds formed near the margins of a distinct sedimentary basin on the Cambro-Ordovician carbonate platform of Pennsylvania. Interpretations of the …
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The seasonal and spatial dynamics in the phytomacrofaunal communities of Lake Henley, Mastert : a thesis submitted in partial fulfilment of the requirements for the degree of Master of Science in Ecology at Massey Universityon
… macrophyte biomass were linked with changes in filamentous algae associated with the weed beds. Invertebrate communities associated with submerged macrophytes were also examined at multiple sites between June 1993 and June 1994. Overall community composition was related more to seasonal …
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Sexual dimorphism, resource partitioning and intraspecific aggression in Caprella californica Stimpson
… is exclusively marine and commonly found on filamentous algae, sea grasses and fouling communities. Most published works on caprellids have been primarily concern~d with systematics (Caine, 1974; Dougherty, 1943; Laubitz, 1970, 1972; McCain, 1968, 1975), although a few recent studies have …
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Removing Soluble Phosphorus from Tertiary Municipal Wastewater Using Phosphorus- Deprived, Filamentous Microalgae
… has been proposed that uses phosphorus-deprived, filamentous microalgae to quickly assimilate soluble phosphorus to low concentrations. This study investigated two parameters that influence the feasibility of such a system: (1) the biomass growth productivity of algal cultures during the …
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Feeding Ecology of Fishes in a South Dakota Power Plant Cooling Reservoir
… of 105 black bullheads >120 mm TL; fishes and filamentous algae were the dominant food items of 146 bullheads 5120 mm. Ostracods and dipteran pupae were positively selected, while Tanvpodinae and Chironominae larvae were negatively selected. Chydorinae, cyclopoid copepods, and Physa spp. were …
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Aspectos da biologia e ecologia de Callibaetis guttatus Navás, 1915 (Insecta: Ephemeroptera: Baetidae) em alagados temporários da Restinga de Maricá, Estado do Rio de Janeiro, com considerações taxonômicas
… vegetable fibres with intact cells, and many algae. The alimentary Pattern probably varied according to the different limnological phases of the marsh. During the decrease of water level the proportion of filamentous algae increased and vegetable fibres decreased in the diet of C.guttatus. …
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The role of red-backed salamanders in ecosystems
… can alter sedimentation, water clarity, and filamentous algae growth. Additionally, amphibians affect ecosystem functions, including nutrient cycling, decomposition, and primary production. Amphibians can alter the transfer of nutrients and energy between aquatic and terrestrial systems, but …
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Propagation and monitoring of freshwater mussels released into the Clinch and Powell rivers, Virginia and Tennessee
… The negative impacts of flatworm predation and filamentous algae in juvenile culture were controlled, and juvenile escapement was prevented. Juvenile mussels were successfully produced and cultured to stockable size (>15 mm) for release. I released laboratory-propagated mussels at three …
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Herbivory by Parma mccullochi (Pomacentridae) : its role as an ecosystem engineer in temperate algal-dominated reefs
… and their likely importance in removing algae from reefs in the region, there is a lack of information on their diet and their impact on the reef algal community. This study aims to determine the role of Parma mccullochi as an ecosystem engineer on temperate algal-dominated reefs in the …
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Ecophysiology, Morphology and Phylogeography of Insects in the Scotia Arc
… on their abundance and the fact they mostly need filamentous algae to thrive. Subsequentially, we exposed larvae of T. magellanicus to different physiological treatments and showed that they are very resistant to osmotic stress and temperature extremes, but that exposure to desiccation are one of …
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Interactive effects of temperature and grazing by seagrass limpets (Siphonaria compressa and Fissurella mutabilis) on seagrass (Zostera capensis)
… Langebaan Lagoon, feeding on epiphytic diatoms, filamentous algae and bacteria growing on blades on seagrass. Siphonaria compressa occurs exclusively in beds of Zostera capensis and is currently listed as critically endangered. Increasing sea temperatures have been found to directly and …
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Water Column Productivity, Calcite Precipitation, and Phosphorus Dynamics in Freshwater Marshes
… experimental mesocosms in central Ohio. Water, algae, and sediment samples were taken from July 1998 to May 1999 at sitesfrom the inflow to the outflow of the marshes. Diurnal dissolved oxygen data taken every half-hour from July 1996 through December 1998 at the experimental marshes were used …
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Application of Adverse Outcome Pathway framework in assessing nanogold exposure to Daphnia magna
… microorganisms, and many other unicellular and filamentous algae species found in aquatic environment. Daphnia magna is an internationally recognized test organism thereby making them an important species in bioassays and have internationally standardized Organisation for Economic Co-operation …
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Herbivorous fishes as determinants of the structure of coral reef communities: farmers, foragers and their interactions
… their territories reflected the proportions of algae and detritus in their diets. This suggests that diet can give a strong indication to the likely nature and magnitude of farmer effects on their territories. The differences among species make it overly simplistic to consider them a single …