The major part of this biotic area lies within the Lower Sonoran Life-zone. In our literature survey we found records of biotic associations for about species. The Tropical barrier separates the Tamaulipan and Veracruzian biotic provinces.
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What Defines a Biotic Component?
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Examples of biotic factors include any animals, plants, trees, grass, bacteria , moss, or molds that you might find in an ecosystem. In general, biotic factors are the living components of an ecosystem and are sorted into three groups: producers or autotrophs, consumers or heterotrophs, and decomposers or detritivores. Grass as producers autotrophs. Mouse, deer, and owl as consumers heterotrophs.