An ecological community is a set of relatively similar species in similar ecological conditions There are different sets of suitable species for different ecological conditions. The greater diversity of communities means that there are more species in the landscape.

It is estimated that there are more than 40,000 species in Estonia The systematics of nature is based on the assumption that living beings form more or less different units – taxons. The central taxon, or the basic unit of systematics, is a species. A species is a set of organisms that are similar in some way. Members of a species are able to produce offspring with each other, but are generally...