Conserving Life on Earth |
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Page 84
... Poisons are usually considered to be substances that interfere direct- ly with the essential metabolic chemistry of organisms and are effective in small doses . These doses may be spread over long periods in the case of " cumulative " ...
... Poisons are usually considered to be substances that interfere direct- ly with the essential metabolic chemistry of organisms and are effective in small doses . These doses may be spread over long periods in the case of " cumulative " ...
Page 85
... poisons on biotic communities are bound to be generalizations riddled with exceptions . Nevertheless , some generalizations about poisons are important . To paraphrase Hynes : Toxicity is dependent upon many environmental factors ...
... poisons on biotic communities are bound to be generalizations riddled with exceptions . Nevertheless , some generalizations about poisons are important . To paraphrase Hynes : Toxicity is dependent upon many environmental factors ...
Page 86
... poisoning . Of the various poisons that have become a global problem , none exert so broad a spectrum of environmental damage over so great an Ospreys with chick , Mexico . The decline of populations 86 CONSERVING LIFE ON EARTH.
... poisoning . Of the various poisons that have become a global problem , none exert so broad a spectrum of environmental damage over so great an Ospreys with chick , Mexico . The decline of populations 86 CONSERVING LIFE ON EARTH.
Contents
Introduction | 3 |
Ecology and ManMade Change | 24 |
Pollution Industrial Accidents and Species Manipulations | 80 |
Copyright | |
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acres agricultural alligator American animals and plants Archie Carr areas artificial reef biological biologist birds blue whale breeding Camp Smith canal cause century chemical climate climax community complex conservation conservationists crop damage danger destruction detergent diversity earth ecological ecologists economic ecosystems effects eggs endangered environment environmental eutrophication Everglades example existing extinction farms fauna fish flood Florida gene Green Revolution green turtles habitat human hunting important increase Indian industry insecticides insects ivory-bill ivory-billed woodpecker killed kind Lake land landscape major mammals marsh miles National Park native natural communities nesting Oklawaha Oklawaha River orangutan organisms percent pest poisons pollution population population density predators preserve problem production protection redwood reef region River Science scientists soil species square miles survival tion Torrey Canyon trees United variety waste wild animals wildlife York zoos