Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Gunnar Sein"'
Autor:
Gunnar Sein, Ülo Väli
Publikováno v:
Diversity, Vol 16, Iss 1, p 69 (2024)
Food supply stands out as one of the most critical drivers of population demographics by limiting reproductive rates. In this study, we assessed fluctuations in diet composition and monitored various reproductive parameters over a nine-year period in
Externí odkaz:
https://doaj.org/article/78964348d5e342ffa71eeb2cbe574b1a
Autor:
Igor V. Karyakin, Miroslav V. Babushkin, Kordian Bartoszuk, Márton Horváth, Urmas Sellis, Gunnar Sein
Publikováno v:
Пернатые хищники и их охрана, Vol 0, Iss 39, Pp 292-296 (2019)
С 70-х гг. казахстанскими орнитологами на перевале Чокпак в предгорьях Западного Тянь-Шаня вёлся регулярный учёт мигрирующих птиц, на осн
Externí odkaz:
https://doaj.org/article/f7c42e49d1d443679cdbd87f52d2335d
Publikováno v:
Пернатые хищники и их охрана, Vol 0, Iss 1, Pp 161-162 (2018)
В течение пяти лет (2014–2018 гг) мы проводили мониторинг размножения скопы (Pandion haliaetus) на восточном побережье Чудского озера. На большей час
Externí odkaz:
https://doaj.org/article/b348e29530484a6b91bec8119fbdf6af
Publikováno v:
Пернатые хищники и их охрана, Vol 0, Iss 1, Pp 65-66 (2018)
Основные цели исследований – выяснение видового состава орлов, размножающихся на полуострове, их численность и продуктивность. Полевы
Externí odkaz:
https://doaj.org/article/7e253233d89f453fac68da8d2ce069d6
Publikováno v:
Ibis. 164:1086-1103
Publikováno v:
Landscape Ecology. 35:1667-1681
Biodiversity is closely related to landscape heterogeneity, but both are difficult to evaluate directly. Apex predators, such as raptors, are potential surrogate indicators of diversity, but previous studies using a correlative approach have been hea
Autor:
BirdLife Hungary, Igor V. Karyakin, Ngo Eagle Club, Kordian Bartoszuk, Sibecocenter Llc, Mme, Urmas Sellis, Gunnar Sein, Darwin State Nature Biosphere Reserve, Márton Horváth, Miroslav V. Babushkin
Publikováno v:
Raptors Conservation. :292-296
Publikováno v:
Journal of Ornithology. 158:841-850
Anthropogenic loss of biodiversity is often indicated by the disappearance of top predators. However, some of them have adapted to man-made agricultural landscapes. Among raptors, one such example is the Lesser Spotted Eagle. We compiled an exhaustiv
Autor:
Christian Itty, Alberto Jorge, Gunnar Sein, Duncan J. Halley, Carlos Pacheco, Jan Tøttrup Nielsen, Juan J. Negro, Jan Kornan, Ismael Galván, Marian Stój, Derek Spencer, Tuomo Ollila
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
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Animals living on the earth’s surface are protected from the damaging effects of solar ultraviolet (UV) radiation by melanin pigments that color their integument. UV levels that reach the earth’s surface vary spatially, but the role of UV exposur