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 E-Mail IMAGE: Isotopic niches of the studied species of the genus Rossia: comparison among species and ontogenetic comparison within species. view more  Credit: Olga Zimina Co-author from Kazan Federal University, Professor Rushan Sabirov explains, In ecosystems, two or more closely related species of organisms with similar ecology and morphological appearance often inhabit the same territory. These species are called sympatric. According to classical ecological theory, one of the species will lose out in competition and eventually die out. In reality, closely related sympatric species coexist successfully for a long time. It is very important to understand how the division of resources and favorable biotope sites between sympatric species in the Arctic occurs, because Arctic ecosystems are extremely susceptible to external influences.

Aleksey golikovRushan sabirovArctic rossiaKazan federal universityUniversity of coimbra portugalIcelandic institute of natural historyPolar institute of marine fisheriesGreenland institute of natural resourcesInstitute of marine research norwayNational securityProfessor rushan sabirovAssociate professor alekseyArctic zonePolar instituteMarine fisheriesGreenland institute