Read e-book online Quantitative Ecology, Second Edition: Measurement, Models PDF

Environmental Studies

By David C. Schneider

ISBN-10: 0126278652

ISBN-13: 9780126278651

A stick to as much as the hugely profitable first variation, this publication stories the manifold ways in which scale affects the translation of ecological edition. As scale, importance, volume, and dimension occupy an increasing function in ecology, this moment version should be an quintessential addition to person and institutional libraries. In delivering a context for solution of ecological difficulties, Ecologists will savour the importance of scale and value addressed during this ebook. Written for complicated undergraduates, graduate scholars, and college researchers, this booklet synthesizes a burgeoning literature at the affects of scale. * extended by means of quite a few explanatory figures and extensive assurance of fabric* subject is of the most important value to Ecologists* the main thorough, entire insurance to be had on quantitative ecology available in the market

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Additional info for Quantitative Ecology, Second Edition: Measurement, Models and Scaling

Example text

It measures the number of potentially interacting species. Beta (β) diversity is the between-habitat diversity differentiation: the change along an environmental gradient or among the different communities of a landscape. It was developed by Whittaker (1960) as a measure of packing competing species along a gradient; it was defined as the ratio of regional (gamma) diversity to average within-habitat (alpha) diversity. Wilson and Shmida (1984) review other measures of beta diversity. Gamma (γ) diversity is the landscape diversity: the number of species in a set of samples including more than one kind of community.

1997). (a) Spatial and temporal scale of the problem of point release of contaminants; (b) Space and time scales of survey and experiments addressing the problem; (c) Space and time scales of prevailing dynamics. 1 State in words an ecological problem of interest to you, then sketch a space-time diagram showing the space and time scales of the problem and of the measurements that can be made. 2 Definition of Scale The word scale has multiple meanings, contributing to its ambiguous usage in the ecological literature.

Habitat loss, for example, alters animal distribution and movement at local scales, whereas at larger scales it can lead to species extinction. When pattern and process depend on spatial or temporal scale, variables at the scale of decades and ecosystems cannot necessarily be computed directly from local measurement, which includes almost all experimental manipulations. The classic example of the problem of scale is loss of biodiversity. The causes of species extinction occur at the scale of ecosystems, whereas measurements of species © 2009 Elsevier Inc.

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Quantitative Ecology, Second Edition: Measurement, Models and Scaling by David C. Schneider

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