The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



(or life regions), the three most important subdivisions of the biosphere: dry land, the sea, and inland waters. Each biocycle is subdivided into biochores, which include a significant number of biotopes. For example, biotopes of sandy, clayey, and rocky deserts unite to form the desert biochore, which—together with forest, steppe, and other biocycles—makes up the dry-land biocycle. The term “biological cycles” is used in ecology in a different sense.


Geptner, V. G. Obshchaia zoogeografiia. Moscow-Leningrad, 1936.
Naumov, N. P. Ekologiia zhivotnykh. Moscow, 1955.
Vernadskii, V. I. Khimicheskoe stroenie biosfery Zemli i ee okruzheniia. Moscow, 1965.
Ecological Animal Geography. New York, 1951.


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
POPs may significantly impact human health and the environment because their persistence; i.e., metastability, enables their: i) long-range transport, bioaccurnulation in biological tissue, and, consequent, iii) biomagnification in ecological biocycles. POPs are usually endocrine disruptors and/or mutagens/teratogens.