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 137 for “"dominant species"”.
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Biological structure of an Agulhas Bank subtidal reef community and consumption estimation for a dominant species
… and the consumption of organic matter by a dominant Porifera species are assessed. Further, reef fauna biomass and community structure, as well as Porifera respiration, the subsurface temperature regime above the subtidal reef and the amount of organic matter available for utilization are …
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Enhancement of diversity via disturbance and seed addition in two sand prairies dominated by different grasses
… can be reduced by native and non-native dominant species, through heightened competition for resources and low colonization by non-dominant species. Traits of the dominant species may influence these interactions and also the extent to which the dominant is affected by disturbance. …
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Effect of Population Sources and Species Pools on Community Phylogenetic and Functional Diversity During Restoration
… reveal new insights into how variation within dominant species interact with the local species pool to influence the structure of restored plant communities. Many studies have examined the effect of dominant species and species pools in structuring plant communities, but few have investigated …
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When do propagules matter? The role of ecological filters and regeneration dynamics during community assembly in tallgrass prairie restorations
… elucidate the role of regeneration dynamics and dominant species on community assembly during tallgrass prairie restoration. In the first study, patterns in the abundance, richness, and diversity of seed and bud banks were quantified across an 11-year chronosequence of restored prairies and in …
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Use of Geographic Information System and Remote Sensing Technologies to Describe Mosquito Population Dynamics in the Ray Roberts Greenbelt, Denton County, Texas
… from April through September 2002 on mosquito species occurring on the Ray Roberts Greenbelt, a riparian corridor used for public recreation on the Elm Fork of the Trinity River, in Denton County, Texas. ArcGIS software was used to set up a stratified random sampling design based on habitat …
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Vegetation patterns and plant reproductive processes in the succulent Karoo
… and competition in explaining variation in species distributions. The aim was to investigate changes in soil properties associated with species turnover (replacement series). Patterns of species abundances have been attributed to cyclic succession driven by disturbance and inter-specific …
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Spatiotemporal Composition of Pest Ant Species in the Residential Environments of Santa Isabel, Puerto Rico
… evaluated the community dynamics of pest ant species in tropical urban environments. Pest ant community dynamics were examined within three Puerto Rican housing developments. Housing developments (one, four, and eight years old), representing different stages of urban succession were sampled …
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The eco-physiology of macroalgae from a temperate marine embayment in southern Australia
… on the growth and ecophysiology of a number of dominant species of macroalgae at a site in Port Phillip Bay (PPB), a large shallow water marine embayment located on the central southern coast of Victoria, Australia. This thesis investigated the physiological processes (i.e. photosynthesis, …
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Stratigraphy and paleontology of the upper Cretaceous Morden Member (Vermilion River Formation) in the outcrop area, northeastern North Dakota
… extent of the Morden Member.</p> <p>Thirty-six species of benthonic foraminiferids and three species of planktonic foraminiferids were collected from 48 outcrop and 17 well cutting samples. The dominant species are rotaliines whereas the daminant individuals are textulariines. The foraminiferid …
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Using Plant Functional Traits to Estimate Prairie Restoration Species Composition
… data that may facilitate the prediction of plant species composition from species functional traits in different ages of prairie restorations. The inexpensive and diverse nature of Maxent makes it advantageous to restoration managers allowing them to manage expenditures in the field. Maxent …
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Fauna de Amphipoda (Crustacea) associada à esponja Dysidea sp. em Arraial do Cabo, RJ - taxonomia e composição da comunidade
… in a total of 4978 specimens included in 29 species. Two new species were described and illustrated, being one of the genus Autonoe and the other of Podocerus. Gammaropsis palmata (Stebbing & Robertson, 1891) and Perioculodes cf. aequimanus (Krossmann, 1880) were found to be new records for …
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Effect of land degradation on the above-ground vegetation and soil seed bank of a Rangeland in Kunene region Namibia
… were sampled along each transect. Woody plant species were identified and counted in a 20 x 20 m quadrat, while herbaceous plants were assessed in a 1 m2 quadrant, nested within the larger quadrat. Soil cores samplers measuring 9.7 cm in diameter and 5 cm in depth were obtained using a soil …
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Vegetation Ecology and Fire Effects on Community Structure, Composition, and Diversity in a Barrens Remnant and a Flatwoods in Southern Illinois
… as there were significant increases in species diversity and cover and dramatic changes among dominant species. Most increase in species diversity appears to be from soil seed banks. At GCB the increase was among species typical for the habitat while at MVF increase in diversity included …
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Vegetation, diversity and rarity on the Cape Peninsula, South Africa
… (471 km²) with over 2285 vascular plant species, is characterised by the combination of a diversity of habitats supporting a mosaic of vegetation types. This study attempts to describe and explain some of the determinants of species pattern and distribution. The first part of this thesis …
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Population biology of two key fish species and the dynamics and management of the trap fishery in Beung Borapet, Thailand
… limited information on the biology of important species and catch rates in fisheries, and limited assessment of management strategies such as Freshwater Protected Areas. This study has provided important information on aspects of the biology of knifefish (Notopterus notopterus) and catopra …
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Soil Carbon and Nutrient Cycling Across Cover Types in Southern Appalachian Hardwood Forests
… (CO, Quercus montana Wild.) and a pine-oak co-dominant cover (PO, Pinus spp. and Quercus spp. (primarily Pinus pungens Lamb. and Q. montana)). Null hypotheses were that: (1) Rs and its relationship to environmental drivers would not differ among the cover types, (2) water and nutrient use …
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Changes in the microbial community of Lubomirskia baicalensis affected by Red Sponge Disease
… lake and a unique ecosystem, home to several species of fresh water sponge. A disease outbreak affecting the dominant species, Lubormirskia baialensis, was recently reported. The cause of the disease has not been determined but one of the current hypothesis is that the increase in methane …
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The establishment of the oligomeric purity and molecular structure for n-methylated bis(8-hydroxyquinoline) zinc (n = 0, 2, 4, and 5)
… chromatography it has been determined that the dominant species of nMeq2Zn (n = 0, 4, 5) is tetrameric in crystalline form dissolved in chloroform, in thermally vapor deposited films, and in crystalline form dissolved in chloroform and DMSO. The 2Meq2Zn was determined to be solely monomeric …
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The Vascular Flora of Bona Glade Natural Area, Dade County, Missouri
… Bona Glade. Seven plant communities with their dominant species are described based upon minimal sampling data and subjective field observations. Soil test data for macronutrients and pH from representative localities on the glade reveal very acid sandy loam soils which are relatively infertile. …
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