인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
The work was performed in the hollow of Lake Baikal (1965-2023). For comparative analysis, the generalizing materials of T.N. Gagina (the end of the XYII – the first half of the XX centuries) were used. By this author, the hollow of Lake Baikal was not identified as an independent ornithogeographic unit and was part of several ornithogeographic sites. At the same time, the hollow differs from the surrounding territories in terms of a complex of physical and geographical conditions and represents a united region. It should be considered as an independent zoogeographic unit – the Baikal complex. Modern climate warming has had a strong impact on the bird fauna of the region. Their fauna increased by 106 species in the second half of the XX – early XXI centuries and now amounts to 427 species of birds (previously 321 species). It should be borne in mind that a slight warming has been observed since the middle of the XVIII century. By the middle of the 20th century, 57 vagrant species had already been recorded here, which clearly expanded the area. However, most of the new species appeared towards the end of the last century and were associated with a series of large, extensive and frequently recurring droughts, followed by long periods of low water, in Central Asia. The process of eviction of birds continues, but at a very slow pace. Few species, ichthyophages and insectivorous, have reached high numbers in the new areas. The remaining species are found in limited numbers as vagrant birds. As a result, the species diversity of birds in the hollow of Lake Baikal has sharply increased, but the number of their main part has remained low.
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
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