Mm. Pikulik et Ve. Sidorovich, SEASONAL PREVALENCE IN OTTER REPRODUCTION AND AMPHIBIAN AVAILABILITY, Doklady Akademii nauk BSSR, 40(6), 1996, pp. 80-83
In Belarus and Eastern Europe as a whole, otter (Lutra lutra) reproduc
tive timing and family group distribution ill a cold period depend on
the possibility to feed on tile common fi og (Rana remporaria). Regula
rity is discussed ill aspect of structural and functional relationship
s in natural and anthropogenic ecosystems.