Humans are the top consumers in many food pyramids. To increase food production, they use methods that disrupt food chains and food webs. Some of the harmful methods are described as follows:
Monoculture: This is the cultivation of a single crop in large areas. Vast tracts of land are converted to rice farms, sugar farms, and coconut farms.
By limiting the cultivation of different kinds of plants, people also deprive many animals of their food and home. These animals, some of which feed on insect pests, move to other places. Only the insect pests that eat the monocrop remain in the area. If uncontroled, these pest can totally wipe out to monocrop in a short time.
Some soil microorganisms depend on specific plants for food. Eliminating these plants is harmful to the microorganisms. Since microorganisms are responsible for returning plant nutrients to the soil, the cycling of nutrients for reuse of the plants is distributed.
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