Regulated streams did not have lower disturbance frequencies than unregulated systems.
Detecting Ecological Impacts: Concepts And Applications In Coastal Habitats
Percentage covers of plants, primarily bryophytes, were lower in regulated systems because of reduced cover on large substrata, but not small or medium ones. Together, these two pieces of evidence suggest that effects of river regulation on bryophytes were not caused by altered disturbance frequencies.
A more likely explanation is that regulated streams have little of the daily or weekly rises and falls in discharge that occur in unregulated streams because of small rainfall events. Consequently, large rocks in regulated streams have only narrow zones that are subject to a variety of wetted conditions, which may be more suitable for bryophyte growth and colonization than constant submergence.
Volume 19 , Issue 1. The full text of this article hosted at iucr.
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Search for more papers by this author. Detecting Ecological Impacts is devoted to the conceptual and technical underpinnings that allow for reliable estimates of ecological effects caused by human activities.
An international team of scientists focuses on the development and application of scientific tools appropriate for estimating the magnitude and spatial extent of ecological impacts. The contributors also evaluate our current ability to forecast impacts.
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Some of the scientific, legal, and administrative constraints that impede these critical tasks also are highlighted. Coastal marine habitats are emphasized, but the lessons and insights have general application to all ecological systems.
From the point of view of mathematical theory all that we can do is to show how the risk of the errors may be controlled and minimised. Spara som favorit.
Detecting Ecological Impacts - 1st Edition
Skickas inom vardagar. Detecting Ecological Impacts: Concepts and Applications in Coastal Habitats focuses on crucial aspects of detecting local and regional impacts that result from human activities.
Detection and characterization of ecological impacts require scientific approaches that can reliably separate the effects of a specific anthropogenic activity from those of other processes.