To a Quesion of Cost Problem Catching Small Mammals at the Scientific Purpose in Dnipro-Orel’s Natural Reserve

The results of long-year investigations catching of small mammals in territory the reserve are presented. Under carry out calculation small mammals in territory the reserve take at the traps as vertebrates (moreover small mammals, birds, frogs, lizards) and also anvertebrates animals (Coleoptera). In all destroy 50 different species of anymals. On the another aspect at the time cartching take the traps Gero take place ruin very much small mammals (4011 individuals at our occasion). Such of high cost was pay possibility from studed small mammals at the Dnipro-Orel's Natural Reserve and solution enumerate in this paper problems: was mounting species composition is 15 animals (Apodemus agrarius, Sylvaemus sylvaticus, S. uralensis, Neomys fodiens, Sorex minutus, S. araneus, Crocidura leucodon, C. Suaveolens, Sicista subtilis, Micromys minutus, Mus musculus, M. spicilegus, Rattus norvegicus, Microtus levis, Arvicola amphibius); was studed this biology and ecology (peculiarity nutrition, reproduction); reading that dinamics of number phone species micromammalia take place tight boud from 11-th cycles of sun activitti and permission make prognosis from perspectiv or retpospective plane; from very actual materiale was studed species-double: Sylvaemus uralensis – S. Sylvaticus, Mus musculus – M. spicilegus and Microtus laevis is a species-double M. arvalis and determine this diagnostis define; bring to light 2 now species from Dnipropetrovsk Region (or reserve) is a Sylvaemus uralensis and Microtus laevis; also carry out scientific investigation a species-double micromammalia and determine parameters his definition at the natural condition; further was studed morphometrics and kraniometrics indexis species family Apodemus (Sylvaemus); moreover was analyse influence of various antropogenous (human) factor from phauna small mammals (introduction pine-tree from arenas of Dnipro River, the autumn fire in sandy steppe and planting seedling of pine-tree at the sandy steppe before fire under plough tractor) from microtheriophauna sandy steppe and in particular, her dominant, a wood mouse - Mus musculus). Adduce the recommendations by reestablishment sandy steppe and her inhabitants from fire area; was acknowledge absence from Dnipropetrovsk Region species Microtus arvalis and showed that here inhabit Microtus laevis, but not M. arvalis, as assert zoologists of Dnipropetrovsk National University; was bring to light and studed phenotipical changeabling sandy steppe and flood-land forms mammal Microtus laevis (so, at the flood-lands territoryes relative of long standing of number Microtus laevis almost in 3,5 one higher than from in a lot sandy steppe.