part of is part of part of participates in participates in biome A biome is an ecosystem which is undergoing climactic ecological succession. EcosytemType LTER:809 EcoLexicon:biome In this definition, there is an assumption that no major perturbations are occurring or have occurred in a time frame affects the successional dynamics of the ecosystem. A "major" perturbation is one which disrupts the community's ability to restore its (near) equilibrium. Usually, pioneer or early secondary successional processes would be in effect in such scenarios. major habitat type ecoregion ecozone astronomical body part biosphere ecosystem climactic ecological succession ecological community