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 24 for “"Indicator Species Analysis"”.
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MYCOBIOME ANALYSIS OF TREES SELECTED BY BLACK-CAPPED CHICKADEES (Poecile atricapillus) AS NEST SITES
… Overall, I identified 201 fungal OTUs to species level. Among the fungal OTUs identified to phylum level, 706 (63%) belonged to Ascomycota, 284 (25%) Basidiomycota, four (0.35%) Mortierellomycota, two (0.2%) Glomeromycota, two (0.2%) Mucoromycota, while 122 (11%) fungal OTUs could not be …
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CHARACTERIZING PATTERNS IN TEXAS GULF COAST BEACH DUNE PLANT SPECIES COMPOSITION
… plant communities were analyzed using cluster analysis, ANOSIM, SIMPER, NMDS, and ISA for fives zones representing the foredune complex of twenty Gulf Coast beaches. ANOVA revealed that zones differ in terms of percent bare sand, percent vegetative cover, and species richness. Cluster Analysis, …
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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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A gradient analysis of Coleogyne communities in Southern Nevada
Species richness, density, and abundance in Coleogyne ramosissima (blackbrush) shrublands were compared on 15 elevational transects in the Spring and Sheep Mountain Ranges adjacent to the Las Vegas Valley. Coleogyne shrublands shared relatively broad upper and lower ecotones with Pinus-Juniperus …
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Using Benthic Indicator Species and Community Gradients to Optimize Restoration in the Arid, Endorheic Walker River Watershed, Western USA
… approach was employed using a combination of indicator species analysis, cluster analysis, canonical correspondence analysis, and community tolerance indices to evaluate the variation of benthic macroinvertebrate community composition across a set of environmental gradients. Results …
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Ecological studies of benthic macroinvertebrates for determining sedimentation impacts in Chattahoochee National Forest streams
… National Forest. Five studies involving the analysis of historical, biological survey data and current data were conducted to improve our understanding of macroinvertebrate response to sedimentation and to support the development of biological information for sediment load models to be …
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Seed mix design and application to overcome seed limitation in floodplain forest restorations
… focused primarily on the establishment of canopy species, operating under the assumption that understory species will naturally recolonize. However, the compositional differences between restored and reference forest understories are apparent. To enhance the compositional similarity of restored …
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Relationships between flood frequency and riparian plant community structure in mountain streams of western Montana
… structure in mountain streams. Boundary analysis showed that microtopography was an important factor for boundary maintenance of riparian plant communities. In the second part of the study, the effective flood frequency was determined initially by partial Mantel tests between inundation …
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Assessing Macroinvertebrate Community Recovery in Post Restoration Silver Bow Creek, Montana
… have been implemented on Silver Bow Creek. This analysis evaluates changes in benthic biotic community composition throughout the period of record (1986 to 2009). Transformations of historical data were necessary to standardize community information and calculate indices of biotic integrity. A …
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Relationships between flood frequency and riparian plant community structure in mountain streams of western Montana
… structure in mountain streams. Boundary analysis showed that microtopography was an important factor for boundary maintenance of riparian plant communities. In the second part of the study, the effective flood frequency was determined initially by partial Mantel tests between inundation …
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Assessing Macroinvertebrate Community Recovery in Post Restoration Silver Bow Creek, Montana
… have been implemented on Silver Bow Creek. This analysis evaluates changes in benthic biotic community composition throughout the period of record (1986 to 2009). Transformations of historical data were necessary to standardize community information and calculate indices of biotic integrity. A …
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Exploring candidate genes and rhizosphere microbiome in relation to iron cycling in Andean potatoes
… approaches including SNP genotyping, QTL analysis, identifying genes orthologous to Arabidopsis ferrome, yeast complementation assay and genetic transformation to avoid the limitation from a single approach. We revealed several candidate genes potentially associated with potato plant Fe …
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The investigation of regional ecology using 2km x 2km scale botanical distribution data
… 1995 - 2009, were analysed using Two Way Indicator Species Analysis and Principal Components Analysis, explored using GIS, to examine major floristic distribution patterns. Environmental data were also examined using Redundancy Analysis. The strongest floristic trend was a human influence …
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Restraurant regions : an ecological community based model of restaurant chain distribution in the United States
… model utilized in this study is commonly used in analysis of ecological communities. Each restaurant chain was treated as an individual biological species, and the clustering software analyzed it as such. The individual restaurant chain locations were treated as individual samples in the …
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Identification and incorporation of quantitative indicators of ecosystem function into single-species fishery stock assessment models and the associated biological reference points
… and an understanding of the interactions among species. The two objectives of this study were to describe the demersal fish community (DFC) associated with the northwestern Gulf shrimp trawl fishery, and to utilize a multispecies Lotka-Volterra model to examine possible community level effects …
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The vegetation of Maud Island, Marlborough, New Zealand
… how the vascular plant communities vary in species composition across Maud Island, (2) determine which environmental factors are important predictors of the variation in species composition of Maud Island plant communities, and (3) describe the pattern of succession of the plant communities …
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Forest recovery trends following an unprecedented mountain pine beetle outbreak in the southern Rocky Mountains
… as they recover. I used Forest Inventory and Analysis data collected by the US Department of Agriculture Forest Service, together with hierarchical cluster analysis, to separate 626 subplots into unique forest type groups based on their post-outbreak overstory and understory stand structure …
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Macroinvertebrate composition of the upper Georges River with reference to urban, industrial and agricultural impacts
… Samples were preserved, picked and identified to species level where possible. Physical measurements and water samples, were taken at each site for every survey. The physical variables measured include turbidity, temperature, dissolved oxygen, pH and conductivity. The water samples were analysedin …
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Vegetation structure and inferred patterns of functional group attrition in a shrub encroached old field and tallgrass prairie mosaic
… endangered ecosystem and encroachment by woody species threatens many remnants. Insights are needed into the differences in diversity and species and functional group composition along a gradient of woody encroachment to help gauge restoration potential and gain insights into patterns of …
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Riparian understory dynamics and relationship to dams on the Elwha River, Washington
… the relative utility of under- and overstory species as indicators of plant community type, reach location and geomorphic landform. Vegetation and environmental surveys were conducted in 2005 and 2010 on 100-m² plots located along 15 perpendicular transects on river reaches above, below and …
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