Ay. Kulikov, POPULATION-STRUCTURE OF EARTHWORMS IN THE SUB-ALPINE ZONE OF THE NORTHERN CAUCASUS (ELBRUS REGION), Soviet journal of ecology, 23(5), 1992, pp. 339-343
The author investigated structural features of the earthworm populatio
n and seasonal changes in the number of them in two biotopes in condit
ions of the Northern Caucasus. The ratio of species was shown in the o
verall complex and in complexes of sexually mature and sexually immatu
re individuals.