Read e-book online Applied Ecology and Natural Resource Management PDF

By Guy R. McPherson

ISBN-10: 0521811279

ISBN-13: 9780521811279

This quantity bridges the distance among ecology and typical source administration and, specifically, specializes in plant ecology as a beginning for crops and natural world administration. It describes how techniques and techniques utilized by ecologists to review groups and ecosystems may be utilized to their administration. man R. McPherson and Stephen DeStefano emphasize the significance of thoughtfully designed and carried out clinical reviews to either the development of ecological wisdom and the applying of suggestions for the administration of plant and animal populations.

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1989:111) to conclude that we are less certain about the role of competition in rodent communities than is generally believed. 2). Dueser et al. (1989) reviewed 25 North American field experiments of competition that included both treatment and control plots. They reported that interspecific competition was prevalent, but that detection of competition was affected by experimental protocols. For example, competition was more evident between enclosed populations than between populations on open grids and, more disturbingly, competition was more evident in unreplicated than replicated studies.

Studying interactions Comparative studies Comparative studies follow directly from descriptive studies, in that observational data are used to describe patterns and the resulting patterns are compared in order to infer differences in process. As with descriptive studies, caution is warranted; in the absence of an experiment, the researcher is forced to compare patterns and then invoke mechanisms. When many hypotheses make similar predictions about pattern, this process simply does not work. Given the complexity of nature, many alternative hypotheses typically can be generated (Keddy 1989).

Descriptive studies remain widely used, at least partly because of historical precedence: “generations of plant ecologists have been occupied with tallying the contents of quadrats in the summer, and then trying to draw inferences about these observations in the winter” (Keddy 1989:83). An impressive number of statistical techniques has been developed just for investigating patterns in data sets derived from field descriptions. , an interaction) must be invoked to explain a pattern, but that several different processes may produce the same pattern.

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Applied Ecology and Natural Resource Management by Guy R. McPherson

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