Global ETD Search

11	Predicting the spatial distribution of stoats, ship rats and weasels in a beech forest setting using GIS Lough, Hamish January 2006 (has links) Using trap data the Hawdon, Poulter and South Branch valleys, a spatial distribution model was created for Stoats (Mustela erminea), Ship Rats (Rattus rattus) and Weasels (Mustela nivalis) in the North Branch of the Hurunui River. Ten spatial attributes were analysed in this thesis as potential spatial predictors of Stoats, Ship rats or Weasels; four of which were distance related measurements (distance from ecotonal edge, distance from river, distance from river tributary and distance from trapping edge); three were climate based variables (mean maximum temperature, mean minimum temperature and mean precipitation) and three were topographical based variables (elevation, aspect and slope). Relationships that existed between each spatial attribute and the number of Stoats, Ship Rats and Weasels caught were quantified by comparing the significance of the mean trapping rate with each spatial attribute and expressed spatially as maps in a Geographical Information System (GIS). Results from this thesis found elevation, aspect and distance from ecotonal edge as potential spatial predictors of Stoat populations. Elevation and aspect were found to be potential predictors of Ship rat and Weasel populations. GIS is able to predict the spatial distribution of pest species to a similar (or better) level compared to more formal associative models. The potential of GIS is however, restrained by the same limitations associated with these models. By using a larger trapping data set and identifying a number of social interactions between Stoats, Ship Rats and Weasels, one can improve the accuracy of spatially modelling each species within a Beech forest environment. Therefore, improve our understanding how landscapes influence the distribution of each pest species. Department of Conservation Stoat distribution Ship Rat distribution Weasel distribution distribution maps Operation Ark GIS Ecological modelling Hawdon valley Poulter valley South Branch North Branch Hurunui Mainland Island Nothofagus beech forest.
12	Fragmentace a savčí predátoři v lesních habitatech: faktory ovlivňující jejich distribuci a výběr prostředí / Fragmentation and mammalian carnivores in forest habitats: variables which affect carnivores distribution and habitat choice PAVLUVČÍK, Petr January 2010 (has links) The human use of landscape causes fragmentation and loss of original habitats. Different species vary in their sensitivity to habitat loss. Especially carnivores can be more sensitive to decrease of their habitat because of lower abundance of their prey. On the other hand several opportunistic carnivores can profit in human modified habitats. This study was carried out in the České Budějovice basin, Czech Republic during the years 2008 and 2009 and the aim of this study was to determine carnivore{\crq}s habitat preferences in the fragmented landscape. During these two years were seven carnivore species monitored in forest patches by using scent stations. Records of this monitoring were compared with physiognomy of these patches and structure of surrounding landscape.
13	Sex, Chastity, and Political Power in Medieval and Early Renaissance Representations of the Ermine Cobb, Morgan B. January 2010 (has links) No description available. Ancient History Animals Art History Classical Studies European Studies European History Folklore History Literature emblem weasel Petrarch ferret ermine Italian Wars Italy France Chastity Nationalism Gaston Phoebus Poitier Cathedral Leonardo da Vinci Queen Mary Psalter Bourdichon Anne of Brittany Ursula Helen Carpaccio Gubbio Andrea Alciati

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