Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1111/ibi.12258 |
High juvenile mortality during migration in a declining population of a long-distance migratory raptor | |
Oppel, Steffen1; Dobrev, Vladimir2; Arkumarev, Volen2; Saravia, Victoria3; Bounas, Anastasios3,4; Kret, Elzbieta5; Velevski, Metodija6; Stoychev, Stoycho2; Nikolov, Stoyan C.2 | |
通讯作者 | Oppel, Steffen |
来源期刊 | IBIS
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ISSN | 0019-1019 |
EISSN | 1474-919X |
出版年 | 2015 |
卷号 | 157期号:3页码:545-557 |
英文摘要 | Many populations of long-distance migrants are declining and there is increasing evidence that declines may be caused by factors operating outside the breeding season. Among the four vulture species breeding in the western Palaearctic, the species showing the steepest population decline, the Egyptian Vulture Neophron percnopterus, is a long-distance migrant wintering in Africa. However, the flyways and wintering areas of the species are only known for some populations, and without knowledge of where mortality occurs, effective conservation management is not possible. We tracked 19 juvenile Egyptian Vultures from the declining breeding population on the Balkan Peninsula between 2010 and 2014 to estimate survival and identify important migratory routes and wintering areas for this species. Mortality during the first autumn migration was high (monthly survival probability 0.75) but mortality during migration was exclusively associated with suboptimal navigation. All birds from western breeding areas and three birds from central and eastern breeding areas attempted to fly south over the Mediterranean Sea, but only one in 10 birds survived this route, probably due to stronger tailwind. All eight birds using the migratory route via Turkey and the Middle East successfully completed their first autumn migration. Of 14 individual and environmental variables examined to explain why juvenile birds did or did not successfully complete their first migration, the natal origin of the bird was the most influential. We speculate that in a declining population with fewer experienced adults, an increasing proportion of juvenile birds are forced to migrate without conspecific guidance, leading to high mortality as a consequence of following sub-optimal migratory routes. Juvenile Egyptian Vultures wintered across a vast range of the Sahel and eastern Africa, and had large movement ranges with core use areas at intermediate elevations in savannah, cropland or desert. Two birds were shot in Africa, where several significant threats exist for vultures at continental scales. Given the broad distribution of the birds and threats, effective conservation in Africa will be challenging and will require long-term investment. We recommend that in the short term, more efficient conservation could target narrow migration corridors in southern Turkey and the Middle East, and known congregation sites in African wintering areas. |
英文关键词 | Balkan peninsula feedback loop Movebank navigation satellite telemetry vulture |
类型 | Article |
语种 | 英语 |
国家 | England ; Bulgaria ; Greece ; Macedonia |
收录类别 | SCI-E |
WOS记录号 | WOS:000356700500010 |
WOS关键词 | VULTURES NEOPHRON-PERCNOPTERUS ; AUTUMN MIGRATION ; SATELLITE TELEMETRY ; SOCIAL INTERACTIONS ; HABITAT SELECTION ; RANDOM FORESTS ; BIRD ; SURVIVAL ; MIGRANTS ; WIND |
WOS类目 | Ornithology |
WOS研究方向 | Zoology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/187775 |
作者单位 | 1.Royal Soc Protect Birds, RSPB Ctr Conservat Sci, Sandy SG19 2DL, Beds, England; 2.Bulgarian Soc Protect Birds BirdLife Bulgaria, Sofia, Bulgaria; 3.Hellen Ornithol Soc, Athens, Greece; 4.Univ Ioannina, Dept Biol Applicat & Technol, GR-45110 Ioannina, Greece; 5.WWF Greece, Athens, Greece; 6.Macedonian Ecol Soc, Skopje, Macedonia |
推荐引用方式 GB/T 7714 | Oppel, Steffen,Dobrev, Vladimir,Arkumarev, Volen,et al. High juvenile mortality during migration in a declining population of a long-distance migratory raptor[J],2015,157(3):545-557. |
APA | Oppel, Steffen.,Dobrev, Vladimir.,Arkumarev, Volen.,Saravia, Victoria.,Bounas, Anastasios.,...&Nikolov, Stoyan C..(2015).High juvenile mortality during migration in a declining population of a long-distance migratory raptor.IBIS,157(3),545-557. |
MLA | Oppel, Steffen,et al."High juvenile mortality during migration in a declining population of a long-distance migratory raptor".IBIS 157.3(2015):545-557. |
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