Összesen 2 találat.


001-es BibID:BIBFORM052181
Első szerző:Fülöp Attila (biológus)
Cím:Autumn migration of soaring birds in North Dobrogea, Romania : a study with implications for wind farm development / Attila Fülöp, Lőrinc Bărbos, Gábor M. Bóné, Szilárd J. Daróczi, Luca A. Dehelean, Réka B. Kiss, István Kovács, Attila Nagy, Tamás Papp
Megjegyzések:In Dobrogea, a core area for wind energy exploitation in Romania, existing knowledge regarding the intensity and pattern of bird migration is limited. In the absence of enumerated data, wind farms may be constructed in areas where large aggregations of migrants pass. In this study we recorded the intensity of the autumn migration of soaring birds in three locations within the M¡acin Mountains, where wind farms are planned to be built. The locations chosen were at V¡ac¡areni, Greci and Cerna villages. Furthermore we categorized all migrating individuals as threatened or non-threatened by the planned wind farms, based on their migration routes and height at local scale. At V¡ac¡areni 4.716 individuals were counted, 3.394 raptors and 1.322 non-raptors, at Greci 2.387 individuals, 2.064 raptors and 323 non-raptors, and finally at Cerna, 5.268 individuals, 4.529 raptors and 739 non-raptors. At all three sites a significant proportion of birds, both raptors and non-raptors, were found to be threatened by the proposed wind farms. At V¡ac¡areni 68.33% of raptors and 84.95% of non-raptors were at threat, at Greci 44.48% and 54.18% respectively, and at Cerna 59.37% and 94.86%. As such we conclude that intensive migration occurs in North Dobrogea and wind farms would have a considerable negative impact on migrants in the studied areas.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény hazai lapban
Mǎcin Mountains
migration corridor
wind energy
Élettudományok - Biológiai tudományok
Megjelenés:Ornis Hungarica. - 20 : 2 (2012), p. 73-85. -
További szerzők:Bărbos Lőrinc Bóné Gábor M. Daróczi Szilárd J. Dehelean, Luca A. Kiss Réka B. Kovács István Nagy Attila Papp Tamás
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001-es BibID:BIBFORM107668
Első szerző:Németh Zoltán (biológus)
Cím:Partial migration and decreasing migration distance in the Hungarian population of the Common Blackbird (Turdus merula Linnaeus, 1758): Analysis of 85 years of ring recovery data / Zoltán Németh
ISSN:1215-1610 2061-9588
Megjegyzések:The Common Blackbird is a partial migrant throughout much of its range in Europe. That is, part of its breeding population migrates while the rest stays at the breeding ground for winter. Given the rapidly changing global climate, it is important to understand how migratory birds, including partial migrants, res-pond to shifting climatic conditions. In this study, I analyzed 85 years of ring recovery data of the Hungarian po-pulation of the Blackbird, ringed during the breeding season and recovered during migration or winter, with two objectives in mind: (1) to assess whether the Hungarian Blackbird population is also partially migratory, and (2) to test the prediction that Blackbirds have exhibited decreasing migration distances over the past decades as ex-pected based on warming winter temperatures. Hungarian Blackbirds expressed both migratory and resident stra-tegies, thus can be considered as partial migrants. Furthermore, Blackbirds had been recovered increasingly closer (-5.9 km/year) to their breeding grounds in the past decades. Age and sex had no effects on recovery distance. Pro-vided that this trend continues, the adaptive benefits of migratory behavior may eventually be reduced to a level that selection will not maintain it in the population and the Hungarian population becomes entirely sedentary. Sur-prisingly, 88% of migrant recoveries were the result of shooting or hunting activities in Mediterranean countries, primarily in Italy, highlighting both the need to understand the effects of hunting pressure on migratory behavior at the population level in songbirds and the urgency to ban the killing of migratory birds in European countries.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény hazai lapban
Eurasian Blackbird
European Blackbird
migratory bird
climate change
partial migration
Megjelenés:Ornis Hungarica. - 25 : 1 (2017), p. 101-108. -
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