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 41 for “"Interspecific interactions"”.
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Experimental study of an avian cavity-nesting community: nest webs, nesting ecology, and interspecific interactions
… as interconnected webs can help identify species interactions that influence community structure. This study examines cavity-nesting bird community interactions within the fire-maintained longleaf pine (Pinus palustris) ecosystem at Eglin Air Force Base, Florida. In chapter 1, I provide a …
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Trees, Birds, and People: Resource Use and Interspecific Interactions in a Namibian Cavity Nesting Guild
… method for identifying important species and interactions within a cavity-nesting guild that can aid the management of these often threatened communities. Yet nest web data does not provide information regarding how natural resource managers are to encourage the support and adoption of …
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Analysis of intraspecific and interspecific interactions between the invasive exotic tree-of-heaven (Ailanthus altissima (Miller) Swingle) and the native black locust (Robinia pseudoacacia L.)
… were used to analyze the intraspecific and interspecific interference between these two species. In the greenhouse experiment, total biomass responses per plant for both species were significantly affected by interspecific but not by intraspecific interference (p <0.05). Competition indices …
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The synecology of dense assemblages of the deposit-feeding Polychaete, Axiothella rubrocincta (Maldanidae)
<p>Interspecific interactions have been shown to play critical roles in determining the realized niches of species in marine rocky intertidal (ie Connell 1961, Paine 1966,, Dayton 1971) and terrestrial (i.e~ Harper 1969, Pianka 1973, Cody 1974) communities. In contrast, such interactions have not …
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Effect of Intercropping and Trap Cropping on the Diamondback Moth, Plutella Xylostella L., Its Natural Enemies and Other Brassicaceous Pests, And, Studies on Diadegma Insulare (Cresson), the Major Diamondback Moth Parasitoid
… DBM larvae dispersed from host plants mainly by interspecific interactions with D. insulare, resulting in higher herbivory to infested and uninfested plants. (Abstract shortened by UMI.).
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The ecology of larval and juvenile fishes in lowland rivers, with particular emphasis on foraging
… which remained constant.The effects of interspecific interactions on the diet composition, prey selection, growth and condition of 0+ roach and bream were studied in allopatric (single-species) and sympatric (mixed-species) fish populations established in enclosures at Calverton Fish …
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Impact of nutrient heterogeneity on plant response and competition in Coastal plain species
… foraging behavior and short-term competitive interactions were investigated for six species native to southeastern USA. Monoculture, two- and six-species garden plots were established and fertilized to create spatially homogeneous or heterogeneous nutrient conditions. After 3.5 months, root …
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Biotic and Abiotic Drivers of Plant-Pollinator Interaction Rewiring
… the effect of changing plant-pollinator interactions. First, I use a structural equation modeling framework to demonstrate that temperature variation and plant community dissimilarity directly drive variation in plant-pollinator interaction patterns. Both variables also provide pathways …
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A quantitative model of density-dependent habitat selection: integrating isodar and isoleg theories
… but few models address multiple species interactions and even fewer simulate these phenomena. Moreover, the development of quantitative models that incorporate multiple species interactions is in its infancy with existing models being mostly conceptual and limited in application. Herein, …
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Spatial Pattern Analysis of Tree Species Distribution in a Central Appalachian Upland Heath Barren
… reflects biotic and abiotic factors, including interactions with surrounding environmental conditions and other plants. Appalachian heath systems are presently understudied regarding spatial point pattern research, despite representing a unique and biologically valuable ecosystem. In this study, …
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Interspecific Hybridization Among Black Basses (Micropterus spp.) in the Chattahoochee River, Columbus Georgia
<p>Interspecific hybridization can lead to the evolution of a new hybrid species or extinction of parental species due to competition or excessive backcrossing, When parental populations differ in abundance, hybrids tend to backcross more frequently with the more abundant parent, resulting in …
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Investigating Mechanisms of Co-Occurrence Between Two Similar Specis of Predaceous Diving Beetles (<i>Coleoptera: Dytiscidae</i>) in Temporary Aquatic Habitats
… Mississippi, but are hypothesized to have strong interspecific interactions. I investigated several possible mechanisms that may promote such coexistence, including segregation in habitat domain, differences in behavior, and differences in dispersal that may allow co-occurrence between these two …
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Influence of Detritus Levels and Organic Pollution on Interspecific Resource Competition, Oviposition Behavior, and Larval Survival of Two Tire-Inhabiting Mosquito Species (Diptera: Culicidae)
… in tires have not been studied, nor have their interspecific interactions. I investigated the effects of chemicals associated with organic pollution on oviposition preferences and larval survival of both species, and the effects of resource limitation, interspecific density, and chemical …
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The influence of habitat features and co-occurring species on puma (Puma concolor) occupancy across eight sites in Belize, Central America
… compared to temperate areas, research on the interspecific interactions of Central American felids is particularly lacking. I used single- and multi-season, single-species occupancy models and two-species co-occurrence models to analyze camera trapping and habitat data collected at eight study …
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Habitat Associations Of Stream-Dwelling Salamanders At Multiple Spatial Scales In Central Kentucky Headwaters.
… Habitat associations in late spring suggested interspecific interactions between <em>A. barbouri<em> and <em>E. cirrigera<em>, and further research is needed on the potential reversal of predatory roles between the two species as <em>A. barbouri<em> larvae develop. My results demonstrated the …
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Effects of seed dispersal by gibbons, sambar, and muntjac on Choerospondias axillaris demography, and the disruption of this mutualism by wildlife poaching
… to predict the role of diversity in species interactions, we must explicitly account for variation in life-history traits.
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Effects of seed dispersal by gibbons, sambar, and muntjac on Choerospondias axillaris demography, and the disruption of this mutualism by wildlife poaching
… to predict the role of diversity in species interactions, we must explicitly account for variation in life-history traits.
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Sugar maple (Acer saccharum Marsh.) provenances differ with climate of origin in survival, growth, and traits along a climate gradient: implications for the species' distribution under climate change
… constrained by climate, may be further shaped by interspecific interactions and intraspecific variation in growth and traits. Changing climate and species composition in plant communities lends urgency to the need to better define the factors determining species’ distributions. This research seeks …
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Understory Composition, Seedling Growth, and Snag Frequency Across a Water-Limited Forest Landscape
… demographic rates, and indirectly through interspecific interactions. Impacts can vary among forest strata. Here, I asked how different forest strata respond to topographic variation in soil moisture and other resources across a water-limited landscape. The objective of the second chapter …
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Species Composition and Spatial Ecology of Amazonian Understory Mixed-Species Flocks in a Fragmented Landscape
… roads. Conservation, however must take species interactions into consideration as they play a pivotal part the maintenance of several biological processes in the tropics. One of the most conspicuous interspecific interactions are seen in mixed-species flocks of birds, which in the Amazon, …
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