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As an illustration, a pasture field or a crop field in a temperate climate. The field is continually maintained by the activity of humans and their livestock. The predominant vegetation is grass or other monoculture, and species diversity is low. If the livestock are removed and the land ceases to be disturbed, larger plants which were previously suppressed by intensive grazing are able to grow. Seeds are dispersed by wind and birds. Deeper rooted plants act as mineral accumulators and other plants act as nitrogen fixers. Soil depths increase and soil erosion and leaching of nutrients decrease. The increasing diversity of plants create habitat for larger diversity of animals and insects. Herbaceous plants initially predominate until slower growing shrubs and finally trees start to dominate. This process can take decades or even hundreds of years.
 
As an illustration, a pasture field or a crop field in a temperate climate. The field is continually maintained by the activity of humans and their livestock. The predominant vegetation is grass or other monoculture, and species diversity is low. If the livestock are removed and the land ceases to be disturbed, larger plants which were previously suppressed by intensive grazing are able to grow. Seeds are dispersed by wind and birds. Deeper rooted plants act as mineral accumulators and other plants act as nitrogen fixers. Soil depths increase and soil erosion and leaching of nutrients decrease. The increasing diversity of plants create habitat for larger diversity of animals and insects. Herbaceous plants initially predominate until slower growing shrubs and finally trees start to dominate. This process can take decades or even hundreds of years.
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[[Category:Ecology]]
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[[Category:Environment]]
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[[Category:Science]]

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