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 11 of 11 for “"comparative ecology"”.
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Comparative ecology of Pachyptila species breeding sympatrically at Gough Island
… their taxonomy, at-sea distribution and foraging ecology are poorly known. There has been considerable confusion surrounding the taxonomy of prions and their identification at sea is problematic. Recent studies have confirmed the presence of two very similar prion species breeding sympatrically, …
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Comparative ecology and physiology of four South African mussel species with notes on culture potential
The objective of this study was to compare the distribution patterns, reproductive cycles, growth rates and physiological processes in four species of South African marine mussels - Aulacomya ater, Choromytilus meridionalis, Mytilus galloprovincialis and Perna perna. The first chapter is a …
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Comparative Ecology of Juvenile Striped Bass and Juvenile Hybrid Striped Bass in Claytor Lake, Virginia
Since the introduction of hybrid striped bass M. chrysops x M. saxatilis to Claytor Lake, Virginia in 1993, relative abundance of striped bass Morone saxatilis has dropped disproportionately to stocking density. Potentially deleterious interactions between the two fishes that may limit recruitment …
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Comparative ecology of the endemic Cyprus Warbler and the congeneric Sardinian Warbler: Implications of recent coexistence
In 1992 the Sardinian Warbler was first recorded breeding in Cyprus. Since then, survey results from Paphos District suggest that the endemic Cyprus Warbler population has declined, while the Sardinian Warbler breeding population has increased and expanded in Paphos District. Colour-ringed Cyprus …
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Comparative Ecology and Conservation Status of Procambarus (Pennides) gibbus and Procambarus (Pennides) versutus in Marion County, Georgia
<p>Two crayfish species, whose conservation status was of concern, Procambarus (Pennides) gibbus Hobbs and Procambarus (Pennides) versutus Hagen, and one relatively common crayfish, Procambarus (Pennides) spiculifer LeConte were studied at nine creek sites in Marion County, Georgia. Major …
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Comparative ecology of the copepods calanoides carinatus and calanus agulhensis in the Southern Benguela and Agulhas Bank ecosystems
The aim of this study was to investigate the niche separation between these two species, using zooplankton net samples collected during biannual hydroacoustic surveys of pelagic fish between 1988 and 2000, as well as results from ship- and laboratory-based egg production and feeding experiments. C. …
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The Comparative Ecology of the Brown Hyaena (Hyaena brunnea) in Makgadikgadi National Park and a Neighbouring Community Cattle Area in Botswana
… and analysed on the feeding and spatial ecology of brown hyaenas living in the Makgadikgadi National Park and in an adjacent Wildlife Management Area where local subsistence pastoralists live. The responses of the pastoralists to a questionnaire designed to document their perceptions of …
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The comparative ecology of highrate plastic, conventional mineral and mixed plastic mineral media in the treatment of domestic sewage in percolating filters.
… m[3] of plastic mediumupon 1.2 m[3] of slag. The comparative treatment efficienciesof the various packings were studied at three different loadings,for three months during maturation at 5.72 m[3] m[-3] d[-1] (0.85 kgBOD m[-3]d[-1]) and then for 12 months at 1.68 m[3]m[-3]d[-1] (0.28 kgBOD …
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The comparative ecology of Minuartia verna (L.) Hiern and Thlaspi alpestre L. in the southern pennines, with special reference to heavy metal tolerance.
… in the southern Pennines on the basis of comparative studies of the autecology and genecology of the species, their population biology and dynamics in the field and their responses to competition from other species. Both field and laboratory studies confirmed that the two species were …
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Comparative reproductive biology of co-occurring endangered and common shrubland birds
… Here I address this apparent paradox with a comparative ecological study of co-occurring black-capped and white-eyed vireos. I studied vireos in shrublands and woodlands in central Texas, USA in 2013 and 2014. I used point count surveys (n = 256) and nest monitoring (n = 145) to determine …