Outline of introduction - Geomatics and Landscape Ecology
to calculate accessible habitat We hypothesize that accessible habitat will be the best predictor of the effects of habitat loss and roads for any species for which roads are a major barrier to movement We conducted a case study of the utility of the accessible habitat concept using a data set of anuran species richness from 27 ponds near a
Accessible habitat: an improved measure of the effects of
accessible habitat (dark grey) is less than total habitat (light grey + dark grey) Distance to the nearest road is the same in landscapes B, C and D, but accessible habitat is lower in landscapes C and D Road density is higher in landscape D than in landscape C but accessible habitat remains the same in both landscapes 160 Landscape Ecol
Learning Landscape Ecology - Educons
training in spatial analysis tools accessible to a wide audience The first edition of this book, Learning Landscape Ecology: A Practical Guide to Concepts and Techniques, was the first “hands-on” teaching guide for landscape ecology The book introduced a diversity of tools and software in the field The text
Local habitat association does not inform landscape
Habitat selection by animals is typically a hierarchical process and when different spatial scales are not considered, important habitat associations of species can be missed (Jones 2001) Earlier research shows that although birds select nesting sites based on local characteristics (Robertson 2009), they are also influenced by the landscape
UNITED NATIONS STATISTICS DIVISION - UN-GGIM
erosion, evolving wildlife habitat or loss of habitat and species at risk, food security in remote areas, extreme fire and flooding events A large proportion of Canada’s 36 3 million people inhabit the southern part of the country while a low population density is found in the north Canada’s population distribution and
Behavioral Responses of Northern Leopard Frogs ( Rana pipiens
that “accessible habitat,” i e , the amount of habitat accessible to an amphibian population without crossing a road, was a stronger predictor of species richness than total habitat They suggest this could imply that some amphibians behaviorally avoid crossing roads, particularly roads with high traffic levels
Positive effects of forest fragmentation, independent of
muting between habitat types (Dunning et al 1992) While the amount of potential roosting habitat is largely a function of forest amount, the spatial configuration of different resources in a landscape is also important in determining whether a potential roosting site will actually be occupied (Wunder and Carey 1996)
Environmental Effects of Sand and Gravel Mining on Land and
43 Journal of Geosciences and Geomatics environmental impacts along Nzhelele valley These impacts ranged from collapsing river banks, habitat destruction, flood plain ponding, landscape destruction, dust, noise, to sedimentation Their work has shown that there is significant environmental degradation in Nzhelele
i Does landscape heterogeneity affect bee diversity in
landscape heterogeneity, independent of habitat amount, affects the richness and abundance of a temperate bee assemblage in an agricultural region of Eastern Ontario, Canada Bee diversity was sampled at roadside sites at the centre of each of 40 landscapes A landscape selection process was used to minimize correlations between
Modeling density dependence and climatic disturbances in
quality of digestible available forage on accessible sites may decline, that is the animals would have density-dependent impacts on forage resources where it is accessible in most years However, the biomass of available and usually Journal of Zoology 272 (2007) 209–217 c 2006 The Authors Journal compilation c 2006 The Zoological Society of
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