Adjective apply to habitats or ecosystems when these have forms very different .of life plant or animal, i.e., that there are many kinds of plants and animals that can live in a sustainable manner in this ecosystem because the tensions between them are balanced. If the struggle for life among hunters animals and hunted was balanced not destroying the ecosystem. By that when a species becomes hegemonic threats to the ecosystem. Some actions of Governments in this regard I guess well-meaning are true nonsense. An example: a few years ago in Castilla y León is released by the field mice million, I guess to food from predators. They did not survive the harsh winters.
