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 17 of 17 for “"Afrotropical"”.
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Biogeography and conservation of terrestrial afrotropical birds
… describe patterns of distribution in terrestrial Afrotropical birds, to investigate the causes of these patterns, and examine how aspects of distributional patterns may be used to prioritize local regions for conservation attention. Presence-only data were gathered and digitized at one-degree …
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Systematics of the Afrotropical Mystarini (Araneae : Thomisidae : Dietinae)
… a worldwide distribution. The thomisids of the Afrotropical region are known from ca. 69 genera and 371 species grouped into seven subfamilies of which the subfamily Dietinae is the focus group in the present study. The Dietinae of the Afrotropical region are represented by 18 genera and ca. 58 …
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A multi-scale study on the movement ecology of Afrotropical waterbirds
Understanding the processes and mechanisms governing animal movement is a fundamental goal in ecology. Processes driving movement can occur across multiple spatiotemporal scales and have important consequences for the structure and dynamics of populations, communities and ecosystems. The study of …
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Forecasted Afrotropical Forest Responses to Climate Change Diverge from Neotropical Predictions with Consequences for Biodiversity Conservation and Carbon Storage
… </p><p>To evaluate the unique response of Afrotropical forests to changes in the abiotic environment and disturbance, I employ diverse data including species inventories, seed rain, species traits, remotely sensed historic climatic data, future climate predictions, and soil nutrient data …
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The Spatial and Temporal Ecology of Seed Dispersal by Gorillas in Lopé National Park, Gabon: Linking Patterns of Disperser Behavior and Recruitment in an Afrotropical Forest
<p>Western lowland gorillas: <italic>Gorilla g. gorilla</italic>) consume large quantities of fruit and disperse a great number of seeds. The majority these seeds are dispersed intact and viable in the dung. Dung is often deposited around the rim of a night nest or at a nest-site. Gorillas often …
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A Phylogenetic Assessment of Thereva Latreille (Insecta: Diptera: Therevidae)
… of Thereva was identified that includes Afrotropical, Nearctic, and Palaearctic species and excludes Afrotropical and Neotropical species treated as Thereva by previous authors. The second phase of phylogenetic analyses examined species relationships within the monophyletic nominal clade …
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Phylogeny of the Scarabaeini (Coleptera: Scarabaeidae)
… Their distribution extends throughout the Afrotropical region (including Madagascar) and southern latitudes of the Palaearctic. In this study, 244 morphological characters, including 154 multistate, and 3 biological characters were identified using 28 morphologically diverse members of the …
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Environmental influences on moult and movement strategies in southern African waterfowl
… I investigated the underlying responses of Afrotropical waterfowl to stochastic varying environmental conditions in southern Africa and the life-history strategies they have evolved to cope with this variability. The study also compares and contrasts the life-history strategies of southern …
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Sense in Sensitivity: Assessing Species Vulnerability to Climate Change
… as most vulnerable include the Neotropical and Afrotropical zones. Mitigation is found to reduce potential vulnerability with early mitigation being the most beneficial. The deeper understanding gained through this research will help us prioritise species for conservation based on their …
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The macroecological distribution of avian functional diversity: environment, extinction risk and protected area coverage
… by comparing seasons across the Palaearctic-Afrotropical flyway, e.g. functional richness (volume of trait space occupied by an assemblage), which ranges from 0 to 0.33, declines by 0.08-0.17 in the northernmost cells in the non-breeding season compared to the breeding season. Some traits …
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The Origins, Evolution, and Phylogeny of the Praying Mantises (Dictyoptera: Mantodea)
… region. In fact, most divergences between Afrotropical and Indomalayan lineages resulted from the slow dissociation between Africa and the Indian subcontinent. Our results also suggest that Antarctica played an important role as a biological conduit during the diversification of some …
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Genoma mitocondrial no estudo filogenético de carrapatos pertencentes às famílias Ixodidae e Argasidae
… englobado por representantes das regiões Afrotropical e Neotropical, com parasitismo específico em morcegos, o que pode ser um indicativo de um processo evolutivo de coevolução entre vetor e seu hospedeiro. Paralelamente, também se investigou para o N. amazoniensis, a interação …
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Intergrative taxonomy and biogegraphy of ants in the genus Anoplolepis (Hymenoptera: Formicidae) in Southern Africa
… Although this genus is widely distributed in the Afrotropical region, it is understudied. This study aimed to: 1) resolve taxonomic challenges of the ant genus Anoplolepis in southern Africa, including the production of updated identification keys for the species and the description of new …
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Hidden Diversity of Madagascan Freshwater Crabs (Brachyura: Potamoidea) Revealed by Morphological and Molecular Studies
<p>This study focuses on the freshwater crab fauna of the island of Madagascar. Relatively little is known about the species diversity of the island’s freshwater crabs and their phylogenetic relationships. Chapter 1 is based on a newly published molecular phylogeny that used the highest taxonomic …
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The phylogenetics and evolution of Africa's Larks (Alaudidae)
… monotypic genus, more closely related to Afrotropical Spizoco1')'s; and (2) a poorly resolved association comprising Eremalauda, Eremophila, Calandrella (and Alaudula) and Melanocorypha (Chapters 2, 3 & 7). A study using toe pads from museum skins (278 nucleotides of cytochrome b) assessed …
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The phylogenetics and evolution of Africa's Larks (Alaudidae)
… monotypic genus, more closely related to Afrotropical Spizoco1')'s; and (2) a poorly resolved association comprising Eremalauda, Eremophila, Calandrella (and Alaudula) and Melanocorypha (Chapters 2, 3 & 7). A study using toe pads from museum skins (278 nucleotides of cytochrome b) assessed …
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Phylogenetic studies of the Madagascan freshwater crabs (Potamoidea, Potamonautidae, Deckeniinae)
<p>Relationships within the Madagascan freshwater crab fauna were examined based on unstudied specimens from all parts of Madagascar. This study allowed the examination of the validity of existing genera and species, and identified potential new taxa. The new specimens provided phylogenetic and …