Ecosystem diversity refers to the diversity of a place at the level of ecosystems. The term differs from biodiversity, which refers to variation in species rather than ecosystems. Ecosystem diversity can also refer to the variety of ecosystems present in a biosphere, the variety of species and ecological processes that occur in different physical ... Found on http://en.wikipedia.org/wiki/Ecosystem_diversity
The variety of ecosystems that occurs within a larger landscape, ranging from biome (the largest ecological unit) to microhabitat. Found on http://www.encyclo.co.uk/local/20945
The variety of unique biological communities found on the Earth. A component of biodiversity. Also see genetic diversity and species diversity. Found on http://www.physicalgeography.net/physgeoglos/e.html