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Natural environments tend to be balanced environments, where organisms depend on one another and also restrict one another by competition for resources or by parasitism, predation, etc.
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Biological Control Natural environments tend to be balanced environments, where organisms depend on one another and also restrict one another by competition for resources or by parasitism, predation, etc. But human influences can upset these balances, and this is most evident when an exotic organism is introduced on purpose or by accident. Many of the most serious pests, crop diseases or invasive weeds come about from their existence in foreign lands and then spreading. These newly introduced organisms find a favourable environment, free from their previous hold backs, and they multiply to achieve "pest" status. Entomologists have a useful term for this - they refer to the keeping organisms in their original origin as "the natural enemy complex". We can define Biological control (biocontrol) as: "the practice or process by which an undesirable organism is controlled by means of another (beneficial) organism" In other words, biocontrol is both a naturally occurring process (which we...
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