Biocenosis

All organisms living on the planet, form communities. Animals and microbes, plants and fungi are part of a community, if you take the same area of ​​land or water environment and have something to do with the place of residence, and with each other. In science, there is a joint called "biocenosis".
Biocenoses divided into phytocenoses Zoocenosis, mikotsenozy and microbial.
Phytocoenosis - community of plants, bringing together all the trees, shrubs and herbs that grow in the same place.
Zoocenosis - the community, which includes large and small animals, day and night, predators and their prey when they feed, have families and raise calves within the same territory.
Mikotsenoz - community of fungi.
Microbial - a community of microorganisms.
The release of these groups recognized conditional. Because in reality there is no association of animals, plants or microorganisms that are independent of other groups. Similarly, there is no existence apart from the living body of his internal organs.
Thus, the forest - is a complex in structure and species composition of the system, which includes trees and fungi, insects, birds, animals and groundwater organisms. Some species are concentrated in the underground level, the other - in the aerial environment in the undergrowth, and some on the top floor, the fourth - the air. Representatives of united with our peers at some single site, forming micro groups - spots. This may be the same plants growing together, or a group of animals who have settled in a limited space. So manifest horizontal patchiness biocenosis.
The vertical and horizontal edges can be sharp, and blurred when one group is moving or occasionally mixed with another group. After all, species interactions within ecological community - the basis of its existence. Some species of living organisms affect the conditions of life and reproduction of others, serve them food, or use them to create their works - nests, burrows, etc.
Therefore, any biocenosis is in constant motion and change. But human intervention leads to more conversion of natural systems. Destroyed or altered some community and create another - artificial: farmland, pasture and windbreaks, reservoirs and marshes drained. Often artificial biocenosis can not exist without human care and remaining without care and attention, it degrades and disintegrates