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 15 of 15 for “"Niche Modelling"”.
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Elephant endurance in Aceh: the effects of habitat disturbance and land cover change on the conservation of Sumatran elephants in Aceh, Indonesia
… habitat use was assessed by means of ecological niche modelling. The Sumatra-wide impact of deforestation on elephant population survival was analyzed by comparing the historic distribution of elephants to their current distribution. The observed incidences of population extinctions were then …
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Predicting suitable areas for cultivation and conservation of the baobab tree and investigating superior sources of planting material
… of the baobab tree were studied using Maxent niche modelling framework. And, in order to contribute to the selection of superior materials for cultivation, fruit morphology was studied in situ (in Malawi and Mali) while leaf and seedling morphology were studied in situ (in Benin and Malawi) …
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"MODEL COMPLEXITY AND VARIABLE SELECTION IN MAXENT NICHE MODELS: ANALYSES FOR RODENTS IN MADAGASCAR"
<p>Ecological niche models (ENMs) characterize the relationship between localities where a species is known to occur and the abiotic characteristics of these regions. While widely used, ENMs remain subject to several outstanding issues, including those related to model complexity and violation of …
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The effects of environment and niche on the distributions of dwarf chameleons, present and future
The niche and niche breadth of Dwarf Chameleons, Bradypodion, was assessed in terms of broad scale climatic factors. A niche-based modelling method was then used to construct present and future habitat suitability maps for 2050 and 2080, for species in the genus. Additionally, the relationship …
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Potential impacts of climate change on myosorex as a model for extinction risk of montane small mammals in South Africa
… by using morphological analysis. Ecological niche modelling using Maxent was applied to predict current and future distribution of these species. Eight bioclimatic variables for current and future projected scenarios together with occurrence data from South African Museums, new field …
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Faunal and human biogeography during the Terminal Pleistocene.
… species throughout Europe. Species distribution modelling of current climatic niches provided a new quantifiable framework for defining the ecology of mammals in Europe today to enable the reconstruction of past environments. Based on this framework, this thesis investigated the non- analogue …
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Identifying drivers of Cape vulture (Gyps coprotheres) space use in southern Africa
… I present the first approximation of the spatial niche of Cape vultures using ecological niche modelling methods and provide a first assessment of the potential impacts of climate change on their future occurrence. Immature individuals and two of the reintroduced vultures traversed extensive …
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Modelling distribution and associated environmental preferences of South African kelps and their close relatives
… of each species, and model their potential niches based on the environmental conditions that facilitate their growth. Species Distribution Modelling was used to map the fundamental niche of each species. The Maxent method was used to model predictive niches by layering known coordinates of …
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Systematics of the Philippine endemic Ixora L. (Rubiaceae, Ixoreae)
… of the country due to climate change. Ecological niche modelling was carried out for the two species with most occurrence records, I. bartlingii and I. auriculata, using Maxent. Model results suggested that these two Ixora species will shift their geographic distributions under predicted levels of …
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Modelling spatio-temporal changes in the ecological niches of major domesticated crops in China: Application of Species Distribution Modelling
… of crops in the past related to their ecological niches. In particular, it presents the niche models for five historically significant crops in China: rice, millet, wheat, barley and buckwheat. These models are rooted in the Species Distribution Modelling (SDM) methodology and infer the potential …
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Modelling the spatial and temporal distribution of Bacillus anthracis suitability across Uganda and Kenya: A Bayesian Approach
Modelling the spatial and temporal distribution of Bacillus anthracis suitability across Uganda and Kenya: A Bayesian Approach Valentina Awino Ndolo Anthrax disease, caused by Bacillus anthracis, poses a significant global disease burden, leading to sporadic outbreaks across a variety of climatic …
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Genomics and ecology of rapid adaptation: the expansion and evolution of the invasive common myna (<i>Acridotheres tristis</i>) and common starling (<i>Sturnus vulgaris</i>) in New Zealand
… I utilised ecological data to characterise the niches of both the common myna and common starling. For both species, I found no evidence of niche divergence between the native range and New Zealand, but evidence of niche differences between the two species in New Zealand. Future suitable …
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Biogeographical detection of Holocene climate refugia in Italian Ecoregions: an applied proposal
L'abstract è presente nell'allegato / the abstract is in the attachment
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Diversität und Biogeographie der Farne und Vögel Boliviens: Niche Modellierung GIS Applicationen
… und Vogelarten berechnet (species distribution modelling), welche endemisch für humide Bergregenwälder und saisonal-trockene tropische Wälder sind. Beide Klimamodelle zeigen recht ähnliche geographische Klimamuster, nur der Niederschlag bildet dabei eine Ausnahme. So ergab SAGA bei der …
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The Wandering Mussels: Analyzing the Ecological Impact of Dreissenid Mollusks Across Spatial and Temporal Scales in Eastern Ontario Using Environmental DNA
Biological invasions profoundly disrupt aquatic ecosystems, yet predicting their long-term trajectories remains challenging. To address this, I propose the Alien Succession Hypothesis (ASH), a novel theoretical framework conceptualizing biological invasions as a form of ecological succession …