Restoration of the Middle Irtysh population of European beaver
2016
Kassal, B. Yu
As a result of reintroduction of individuals of the Eastern European and Belorussian subspecies of European beaver populations, a Middle Irtysh population was formed. Five stages can be distinguished in its development: adaptation (1953–1966); recovery (1967–1975); stabilization (1976–1988); depression (1989–2000); and expansion (2001–2012, not finished). Each stage has its own individual statistical and mathematical characteristics. A complete restoration of the European beaver range has not been achieved in the oblast, since the introduction of commercial hunting led to a depression in the number and number dilution of the range. Therefore, the quantitative and spatial development of the Middle Irtysh European beaver population was delayed for 25 years.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
المعلومات البيبليوغرافية
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