First Day High Essay

1553 WordsJun 28, 20127 Pages
Ecological backlash It's the revenge of nature to the effect of the damage we make. Ecological backlash involves the counter-responses of pest populations or other biotic factors in the environment that diminish the effectiveness of pest management tactics. Many of these counter responses result from heavy mortality burdens imposed by the pest management tactics. Other responses arise from disruption of ecological processes or changes in resource levels of the biotic community. Ecological backlash mainly manifests in the form of resistance, resurgence, and replacement- the three "R" s of pest management awareness. This simply means viewing problem from all angles, anticipating side effects. If doing so, we might succeed in solving one environmental problem but at the same time start another. Some examples of ecological backlash: Pest control resistance- bugs become immune to treatments and chemicals Effects of an oil spill on the environment- loss of fish, dirty water The unexpected and detrimental consequences of an environmental modification (e.g. dam construction) which may outweigh the gains anticipated from the modification scheme. Eutrophication Eutrophication (Greek: eutrophia—healthy, adequate nutrition, development; German: Eutrophie) or more precisely hypertrophication, is the ecosystem response to the addition of artificial or natural substances, such as nitrates and phosphates, through fertilizers or sewage, to an aquatic system.[1] One example is the "bloom" or great increase of phytoplankton in a water body as a response to increased levels of nutrients. Negative environmental effects include hypoxia, the depletion of oxygen in the water, which induces reductions in specific fish and other animal populations. Other species (such as Nomura's jellyfish in Japanese waters) may experience an increase in population that negatively

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