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 11 of 11 for “"Dichotomous Key"”.
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A study of biting midge populations and an assessment of Bluetongue virus presence in southern Ontario, with a visual dichotomous key to the North American genera of Ceratopogonidae
… of their dispersal patterns. Finally, a dichotomous key to the Nearctic biting midge genera was constructed and illustrated with high-definition photography to show key characters. This key aids with taxonomic identification of the 35 recognized genera occurring north of Mexico.
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Chapter 1, a dichotomous key for the identification of nine salmonids of the Inland Northwest using six diagnostic skull bones; and associated equations to estimate total length and weight form bones ingested by piscivores or found in archeological sites; Chapter 2, Utilization of acoustic biotelemetry to define the movements of Lake Roosevelt Redband trout, oncorhynchus mykiss gairdneri
… bones of salmonids, adequate descriptions for keying out most salmoinds is limited in the available literature. To address this, eight different bones from a sample of 273 fish, representing nine salmonid species, were observed and measured. Observations and measurements were used to construct …
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Preserving Traditional Botanical Knowledge in a Developing World: A Case Study.
… the National and State educational standards. A dichotomous key using plant morphology and anatomy is presented, and is linked to a taxonomic treatment and descriptions of ethnobotany, linguistics, and economic value. Both library citations and numerous web resources are given to supplement the …
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A computer-assisted method for deriving soil maps of Virginia counties
… was written to combine these data and produce a dichotomous key to soil types. About 36,000 cells belonging to 26 soil types were classified with 55 percent accuracy using data available for the entire study area. Twenty- three of the 26 types could not be distinguished in the classification. …
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An Evolutionary and Ecological Investigation into the Enigmatic Stalked Puffball Genus Tulostoma
… the southwestern United States is outlined and a dichotomous key for these species is provided. The phylogeny is then used to investigate phylogeographic patterns in the genus. The phylogeographic analysis indicates a Palearctic origin for the genus. The phylogeography also suggests both …
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Feeding ecology, daily activity budget and primatourism of schlegel’s banded langur (presbytis neglectus) (schlegel,1876) in Kota Tinggi Johor
… neglectus, is an endemic leaf-eating monkey distributed in Johor but faced lacked of concern on its conservation aspect. It has the potential to be a primate-based tourism product called PrimaTourism (read: primate tourism) which is able to offer a sustainable approach in balancing the …
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Systematics, Biogeography and Leaf Anatomy and Architecture of Bursera subgen. Bursera (Burseraceae) in the Greater Antilles and the Bahamas
… as conspecific with <em>B. trinitensis</em>. A dichotomous key is provided using mostly vegetative characters due to the frequent lack of adequate reproductive material and the relative uniformity of most floral and fruit characters. Each species description includes leaf architecture …
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Mountains as Crossroads: Temporal and Spatial Patterns of High Elevation Activity in the Greater Yellowstone Ecosystem, USA
… materials they contain. Second, I create a dichotomous key for chronologically typing projectile points, suggesting a methodological improvement for typological dating in the GYE and for surface archaeology more broadly. Third, I use obsidian source data to consider whether mountain people …
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Assessment of morphological and molecular genetic variation of freshwater mussel species belonging to the genera Fusconaia, Pleurobema, and Pleuronaia in the upper Tennessee River basin
… may exist in systems often explored. Three dichotomous keys were created from classification trees to identify select individuals in the genera Fusconaia, Pleurobema, and Pleuronaia; two of these keys, one for shells and one for live mussels were tested by participants with varying mussel …
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Revision of Xanthomicrogaster Cameron, 1911 (Hymenoptera: Braconidae: Microgastrinae)
… boundaries of the genus are proposed, and a dichotomous key to world species is presented to facilitate identification and future description of species. Two molecular phylogenies are produced, using appropriate outgroups: one for all newly described species using three genes, and one for all …
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Development of Molecular and Morphological Resources for Identification and Monitoring of Freshwater Mussel Species in the Genera Fusconaia and Pleurobema in the Green River, Kentucky
… variation in my study species and developed dichotomous keys for the identification of both live mussels and shells. My results suggest that P. rubrum and P. sintoxia are the same species based on the mitochondrial DNA analyses, as there were few genetic differences between them. My results …