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 32 for “"aquatic-terrestrial"”.
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RESOURCE SUBSIDIES ACROSS THE AQUATIC-TERRESTRIAL BOUNDARIES OF TEMPORARY PONDS
Aquatic habitats are closely linked to surrounding terrestrial environments via reciprocal subsidies. Much of the research on these subsidies has been focused on streams, while subsidies across aquatic-terrestrial boundaries of other aquatic systems, like temporary ponds, have received little …
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Diet, growth and bioenergetics of Northern Pike (Esox lucius Linnaeus, 1758) in Box Canyon Reservoir, Pend Oreille River, Washington
… amphibians and mammals to species, insect prey (aquatic/terrestrial) to family and prey fish to species. Using standard regression equations from Hansel et al. (1988) and those developed for the EWU bone reference collection the length of ingested prey items at time of ingestion were estimated. A …
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Use of main channel and shallow-water habitat by larval fishes in the lower Missouri River
… (CPUE) was higher within sandbar aquatic terrestrial transition zone (ATTZ) than main channel. Local-environmental factors accounted for the greatest proportion of variance in larval fish CPUE within sandbar ATTZ, followed by hydrologic and finally geomorphic factors at macro- and …
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Relation of Missouri river flows to sandbar morphology with implications for selected biota
… Sandbars are an important interface between aquatic and terrestrial environments, i.e. an aquatic-terrestrial zone (ATTZ), within the main channel of the lower Missouri River. Predictive models of sandbar morphometry (area, wetted perimeter, elevation, and water-surface slope) were developed …
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Dissolved Organic Matter Sources from Soil Horizons with Varying Hydrology and Distance from Wetland Edge
… about how hydrologic connectivity along the aquatic-terrestrial interface in GIW catchments influences carbon dynamics, particularly regarding dissolved organic matter (DOM) transport and transformation. The organic matter (carbon) that accumulates in wetland soils may be released into water, …
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Influence of physical and biological habitat variables on juvenile salmonid and invertebrate drift abundance in southwest British Columbia streams
… models for invertebrate drift abundance. Aquatic, terrestrial and total invertebrate drift abundances varied primarily between sites and very little between days or months at the same site, indicating that a single day of sampling is sufficient to assess drift abundance for comparison …
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Influences of Mountainside Residential Development to Nutrient Dynamics in a Stream Network
… residential development not only modifies the terrestrial system but also aquatic systems by changing the nutrient input from the terrestrial to aquatic. However, the impacts of mountainside residential development on stream ecosystems are complex because interactions between in- stream process …
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Environmental reviews and environmental management systems: Methodologies and organisational impacts
This thesis considers the methodologies and organisational impacts of Environmental Reviews and Environmental Management Systems in Local Authorities, Universities and Conservation organisations. It assesses the practical impacts of these tools, identifies elements of good practice and discusses …
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Aluminium toxicity (with reference to Copper) in the aqueous environment and the mechanisms of its glutathione-mediated detoxification in the brine shrimp (Artemia franciscana)
Glutathione (y-glutamylcysteinylglycine) is a vital and ubiquitous component of biological systems that has been demonstrated to have a protective role against the toxicity of a wide array of xenobiotics and their metabolic by-products. It has been shown to detoxify many metals by direct and …
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Biodegradation studies of polyether polyurethane in a landfill site
Polyether polyurethane rigid foams have always been considered as inert materials due to their extreme stability. Urethanes and polyethers, which are the main constituents of the polymer structure, are well known for theirstability and resistance to hydrolysis.t 32 These groups give to the foam its …
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The effect of the growth retardant Paclobutrazol on the in vitro growth and development of Betula and Populus species
The effects of the application of increasing concentrations of the growth retardant paclobutrazol (PBZ) to in vitro cultures of Populus and Betula species was studied, with a view to translating the effect into the field, and ultimately to control undesired tree growth commercially. Plant growth …
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Investigation into the toxicity and membrane interactive properties of a range of cationic photosensitisers with potential application to Photoantimicrobial Chemotherapy
The emergence of bacterial strains with resistance to traditional antibiotics has necessitated fresh approaches to the treatment of infections. In the present study, the therapeutic potential of a series of phenothiazinium based photosensitisers (PhBPs) to act as novel photodynamic antibacterial …
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Aspects of Lumbricus Terrestris L. dispersal, distribution and intraspecific interactions in field and laboratory investigations
Earthworms are considered very important soil organisms, greatly influencing soil function through their feeding, burrowing and casting activities, e.g. comminution and incorporation of litter into soil, building and maintenance of soil structural porosity and aggregation, promoting changes in …
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The effectiveness of local air pollution control in Lancashire
This thesis examines the implementation of air pollution control at the local level within the UK. Focusing upon the local air pollution control regime (LAPC) that is regulated by local authorities under the provisions of Part One of the Environmental Protection Act 1990, the research assesses …
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Cholinergic and peptidergic responses of pedal A cluster cells of the pond snail lymnaea stagnalis
The cardioexcitatory neuropeptide FMRFamide was first identified and characterised by Price and Greenberg in the mollusc Macrocallista nirnbosa. Since then the peptide has been investigated in species representing every molluscan class except Scaphopoda The main classical neurotransmitters within …
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Changes in soil invertebrate decomposer communities during regeneration of Scots Pine within the Abernethy Forest Reserve, Scotland
Plans currently exist to extend the range of native woodland within the Scottish Highlands. The effects of such an expansion on birds, mammals and above ground invertebrates have been previously been investigated, but little consideration has been given to soil invertebrates. This research looks at …
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A study of the effects of paclobutrazol on the growth rate of fast growing tree species
A detailed investigation was conducted into the use of growth regulators to slow the development of fast growing tree species in close proximity to overhead power lines. Four fast growing tree species were selected: Acer pseudoplatanus (Sycamore), Tilia X europea (Lime), Fraxsinus excelsior (Ash) …
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A physiological and genetic analysis of the role of phytochrome in photoperiodic induction of flowering in Arabidopsis Thaliana
An analysis of the photoperiodic induction of flowering in Arabidopsis thaliana (L.) Heyne, Landsberg erecta ecotype, was carried out. This revealed that 4 day old seedlings, at which time the cotyledons where expanding and greening, could differentiate between a LD and a SD. At this stage the …
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Studies of aquatic micro-organisms in domestic swimming pools
Microbial attachment and proliferation on a surface leads to the formation of a structure known as a biofllm. In this thesis attention is directed towards the attachment of microorganisms to submerged surfaces in private swimming pools Samples were taken from two private swimming pools located in …
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