Re-introduction of Griffon Vulture ( Gyps fulvus ) in the Eastern Balkan Mountains, Bulgaria - completion of the establishment phase 2010-2020.

Autor:	Kmetova-Biro E; Green Balkans - www.greenbalkans.org, Stara Zagora, 9 Stara Planina Str., Bulgaria Green Balkans - www.greenbalkans.org Stara Zagora, 9 Stara Planina Str. Bulgaria.; Department of Environmental Sciences and Policy, Central European University, Vienna, Austria Department of Environmental Sciences and Policy, Central European University Vienna Austria., Stoynov E; Fund for Wild Flora & Fauna, 49 Ivan Mikhaylov Str., office 327, P.O.Box 78, www.fwff.org, pirin@fwff.org, Blagoevgrad, Bulgaria Fund for Wild Flora & Fauna, 49 Ivan Mikhaylov Str., office 327, P.O.Box 78, www.fwff.org, pirin@fwff.org Blagoevgrad Bulgaria., Ivanov I; Green Balkans - www.greenbalkans.org, Stara Zagora, 9 Stara Planina Str., Bulgaria Green Balkans - www.greenbalkans.org Stara Zagora, 9 Stara Planina Str. Bulgaria., Peshev H; Department of Geography, Ecology and Environmental Protection, Faculty of Mathematics and Natural Sciences, South-West University 'Neofit Rilski', Blagoevgrad, Bulgaria Department of Geography, Ecology and Environmental Protection, Faculty of Mathematics and Natural Sciences, South-West University 'Neofit Rilski' Blagoevgrad Bulgaria.; Fund for Wild Flora & Fauna, 49 Ivan Mikhaylov Str., office 327, P.O.Box 78, www.fwff.org, pirin@fwff.org, Blagoevgrad, Bulgaria Fund for Wild Flora & Fauna, 49 Ivan Mikhaylov Str., office 327, P.O.Box 78, www.fwff.org, pirin@fwff.org Blagoevgrad Bulgaria., Marin S; Green Balkans - www.greenbalkans.org, Stara Zagora, 9 Stara Planina Str., Bulgaria Green Balkans - www.greenbalkans.org Stara Zagora, 9 Stara Planina Str. Bulgaria., Bonchev L; Fund for Wild Flora & Fauna, 49 Ivan Mikhaylov Str., office 327, P.O.Box 78, www.fwff.org, pirin@fwff.org, Blagoevgrad, Bulgaria Fund for Wild Flora & Fauna, 49 Ivan Mikhaylov Str., office 327, P.O.Box 78, www.fwff.org, pirin@fwff.org Blagoevgrad Bulgaria., Stoev IP; Green Balkans - www.greenbalkans.org, Stara Zagora, 9 Stara Planina Str., Bulgaria Green Balkans - www.greenbalkans.org Stara Zagora, 9 Stara Planina Str. Bulgaria., Stoyanov G; Birds of Prey Protection Society, 23 Golyam Bratan Str., www.bpps.org, Sofia, Bulgaria Birds of Prey Protection Society, 23 Golyam Bratan Str., www.bpps.org Sofia Bulgaria., Nikolova Z; Green Balkans - www.greenbalkans.org, Stara Zagora, 9 Stara Planina Str., Bulgaria Green Balkans - www.greenbalkans.org Stara Zagora, 9 Stara Planina Str. Bulgaria., Vangelova N; Fund for Wild Flora & Fauna, 49 Ivan Mikhaylov Str., office 327, P.O.Box 78, www.fwff.org, pirin@fwff.org, Blagoevgrad, Bulgaria Fund for Wild Flora & Fauna, 49 Ivan Mikhaylov Str., office 327, P.O.Box 78, www.fwff.org, pirin@fwff.org Blagoevgrad Bulgaria., Parvanov D; Nadezhda Women's Health Hospital, 3 'Blaga vest' Street, Sofia, Bulgaria Nadezhda Women's Health Hospital, 3 'Blaga vest' Street Sofia Bulgaria., Grozdanov A; Department of Zoology and Anthropology, Faculty of Biology, Sofia University 'St. Kliment Ohridski', 8 Dragan Tsankov Blvd, zootribe@gmail.com, Sofia, Bulgaria Department of Zoology and Anthropology, Faculty of Biology, Sofia University 'St. Kliment Ohridski', 8 Dragan Tsankov Blvd, zootribe@gmail.com Sofia Bulgaria.
Jazyk:	angličtina
Zdroj:	Biodiversity data journal [Biodivers Data J] 2021 Apr 20; Vol. 9, pp. e66363. Date of Electronic Publication: 2021 Apr 20 (Print Publication: 2021).
DOI:	10.3897/BDJ.9.e66363
Abstrakt:	The current study presents and analyses the results from the recently completed 11-year-establishment phase, following the start of the local re-introduction of the Griffon Vulture ( Gyps fulvus ) in Kotlenska Planina SPA and Sinite Kamani Nature Park in the Eastern Balkan Mountains of Bulgaria in the period 2010-2020. As a result of the re-introduction efforts and release of 153 individuals, the Griffon Vulture has been successfully reproducing again in the Eastern Balkan Mountains since 2016, after more than 40-50 years of absence. At 2020, the local population consists of some 80 local and up to 80-115 birds, together with sojourn individuals. Amongst them, 23-25 breeding pairs, located in five different colonies and two more frequently used roosting sites. The current average productivity remains relatively low: 0.41 fledglings/territorial pair and fledging success of 0.61 fledglings/breeding pair between 2016 and 2020, but shows a trend to increase with time and the growing experience of the young locally re-introduced population. The mortality confirmed between 2010-2021 accounts for 33%, mostly due to electrocution as a post-release effect in the first six months following their release. Our data show that the newly established population in the Eastern Balkan Mountains mostly forages on feeding sites, having a comparatively small 95% home range: 281.88 ± 91 km 2 and 50% core area: 6.6 ± 2.28 km 2 (range 4.7-8.5 km 2 ). We, therefore, consider the establishment phase of the re-introduction of Griffon Vulture in this particular site as successfully completed, but management should continue. Furthermore, the area of the Eastern Balkan Mountains can currently be regarded as a "source" for the species within the source-sink population regulation concept in the national and Balkan context. (Elena Kmetova–Biro, Emilian Stoynov, Ivelin Ivanov, Hristo Peshev, Simeon Marin, Lachezar Bonchev, Iliyan P. Stoev, George Stoyanov, Zlatka Nikolova, Nadya Vangelova, Dimitar Parvanov, Atanas Grozdanov.)
Databáze:	MEDLINE
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