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 “"ant communities"”.
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Effects of fragmentation and invasion on ant communities
… uses such as pastures, sugarcane and oil palm plantations. The resulting remnants generally maintain lower species diversity relative to unfragmented forest, and the species composition of what remains often includes generalist and invasive species. Another causative agent of extinction are …
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Leaf litter ant communities in tropical lowland rain forests in Sabah, Malaysia
… logging. Additionally the remaining forest remnants are isolated from each other by large scale oil palm plantations. Biodiversity patterns and responses of the community of leaf litter ants were studied in anthropogenically disturbed habitats and primary forests of different size. In logged …
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The distribution and ecology of invasive ant species in the Pacific region
Invasive ant species represent a major threat to biodiversity through their detrimental impacts on native ecosystems. An important step to managing invasive ant species is determining the factors responsible for their current and potential distribution. This thesis examines the spatial distribution …
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Granivory and Granivores in Native Grasslands and Agropyron Cristatum Stands in the Northern Great Plains
… the northern Great Plains because of the low plant biodiversity and high stability in A. cristatum stands. Small consumers have the potential to contribute to A. cristatum invasion and stability through granivory and herbivory. Little is known about ant species composition in the Northern Great …
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How availability and quality of nectar and honeydew shape an Australian rainforest ant community
Ant communities visiting nectar and honeydew sources were studied in a tropical lowland rainforest in North Queensland, Australia. The study focused on the hypothesis whether the distribution and composition of nectar and honeydew diets influence resource partitioning and competition in the ant …
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The influence of Microhodotermes viator nest density and dispersion on ecological processes
… occur in regular hexagonal patterns, predominantly in the north-western Succulent Karoo of South Africa, and are associated with distinct floral communities and faunal interactions. Most of the current literature on heuweltjies centres around their origins, of which two dominant theories …
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Global change effects on ant-mediated seed dispersal
… mutualisms, including seed dispersal by ants, are critical to the assembly of communities and the function of ecosystems. However, the consequences of human-caused global change factors, such as habitat fragmentation and climate change, for the future of these mutualisms are not fully …
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A functional and trait-based approach in understanding ant community assembly in the Soutpansberg Mountains, South Africa
… along the elevational Soutpansberg transect, ants were used as a model study organism because they are widely distributed geographically, ubiquitous and play several important roles in ecosystems. Functional and taxonomic diversity patterns along the elevation, their drivers (seasonality, soil …
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Linking mechanism to pattern in community assembly: Ant-mediated seed dispersal in neotropical pioneer tree species
… genetic structure, demography, and reproduction. Ant-mediated seed dispersal has evolved multiple times in many biogeographical locations. Most research in this area has focused on myrmecochorous plants that are known to elicit seed dispersal by providing a specialized lipid rich food reward …
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The impact of pine plantations and alien invertebrates on native forest and fynbos invertebrate communities in Table Mountain National Park
… (South Africa) is renowned for its exceptional plant and invertebrate diversity and endemism, extensive alien plant invasions and exotic pine plantations threaten and reduce native species richness. This study frames invasion ecology theory in a conservation context, and examines the impact of …
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Surveying house-infesting ants after 87 years: species identity and economic impact in central Illinois
Quantifying the long-term impacts of urbanization on taxa requires historic records and long-term surveys. In the mid-1920’s, Dr. Marion R. Smith conducted a 3-year survey of house-infesting ants in Urbana, Illinois. He reported species diversity, relative abundance, and the economic impact of …