Dimitris P. Vasilakis
Research Subjects
Research Interests
Dimitris P. Vasilakis has a total of 3 co-authors. Here are the top co-authors by number of shared publications:
Javier N. Elorriaga
Mungialde Etorbidea11 , Derio, Spain
2 shared publications- Konstantinos Poirazidis
Laboratory of Environmental Management and Sustainable Development, Department of Environment, Ionian University, Panagoula, 29100 Zakynthos, Greece
2 shared publications Dimitris P. Vasilakis
WWF‐Greece , Dadia, Greece
1 shared publication
Latest Publications
- 1 February 2008
- Published by Taylor & Francis in Journal of Natural History
- Vol. 42 (5-8) , 355-373
Range use of a Eurasian black vulture (Aegypius monachus) population in the Dadia‐Lefkimi‐Soufli National Park and the adjacent areas, Thrace, NE Greece
Primary goal of this study was to facilitate the management and conservation of Eurasian black vulture (Aegypius monachus) population on a larger scale than the Dadia‐Lefkimi‐Soufli National Park (Dadia NP). Range use pattern of this population was studied using an integrated radio‐tracking methodology. Various home range (HR) parameters were estimated for the breeding (BS) and non‐breeding (NBS) season using minimum convex polygon and fixed kernel estimators and incremental cluster polygon analysis. Various comparisons were made within and between the two seasons and between the different age classes. More activity centres were detected during the BS than the NBS. The overall area used by the vultures was bigger in the NBS than in the BS and the adult individuals used HRs and core areas larger in size than the juveniles. During their foraging the vultures prospected a much wider area than Dadia NP and all showed fidelity to the colony while the juvenile individuals were attached to the natal area. The vultures' foraging behaviour has not been affected by supplementary feeding. Measures have to be taken to preserve the foraging areas that were identified and to prevent rural depopulation and the abandonment of traditional stock‐raising practices.
- 1 February 2008
- Published by Taylor & Francis in Journal of Natural History
- Vol. 42 (5-8) , 355-373
Range use of a Eurasian black vulture (Aegypius monachus) population in the Dadia‐Lefkimi‐Soufli National Park and the adjacent areas, Thrace, NE Greece
Primary goal of this study was to facilitate the management and conservation of Eurasian black vulture (Aegypius monachus) population on a larger scale than the Dadia‐Lefkimi‐Soufli National Park (Dadia NP). Range use pattern of this population was studied using an integrated radio‐tracking methodology. Various home range (HR) parameters were estimated for the breeding (BS) and non‐breeding (NBS) season using minimum convex polygon and fixed kernel estimators and incremental cluster polygon analysis. Various comparisons were made within and between the two seasons and between the different age classes. More activity centres were detected during the BS than the NBS. The overall area used by the vultures was bigger in the NBS than in the BS and the adult individuals used HRs and core areas larger in size than the juveniles. During their foraging the vultures prospected a much wider area than Dadia NP and all showed fidelity to the colony while the juvenile individuals were attached to the natal area. The vultures' foraging behaviour has not been affected by supplementary feeding. Measures have to be taken to preserve the foraging areas that were identified and to prevent rural depopulation and the abandonment of traditional stock‐raising practices.
- 1 February 2008
- Published by Taylor & Francis in Journal of Natural History
- Vol. 42 (5-8) , 345-353
Population size, breeding rates and conservation status of Eurasian black vulture in the Dadia National Park, Thrace, NE Greece
The population of the Eurasian black vulture in the Dadia National Park was nearly extinct in 1979 (26 individuals and 4–5 pairs) and since 1988 it has been the only breeding population in Greece and the Balkans. During the period 1987–2005, the number of breeding pairs increased from 6 to 22. The protection of the nesting sites and the establishment of one supplementary feeding site could have contributed positively to this increase. Overall, during 1994–2005 the number of breeding pairs remained stable but breeding success showed a significant decrease. During this period, two remarkable drops in the number of the breeding pairs were recorded in 1995–1997 and in 2003–2005. Concurrent with these decreases, a considerable number of individual adult fatalities were recorded, caused mainly by the consumption of poisoned carcasses. Poisoning can be considered as one of the main reasons of black vultures mortality in Dadia National Park and the adjacent areas.
- 1 February 2008
- Published by Taylor & Francis in Journal of Natural History
- Vol. 42 (5-8) , 345-353
Population size, breeding rates and conservation status of Eurasian black vulture in the Dadia National Park, Thrace, NE Greece
The population of the Eurasian black vulture in the Dadia National Park was nearly extinct in 1979 (26 individuals and 4–5 pairs) and since 1988 it has been the only breeding population in Greece and the Balkans. During the period 1987–2005, the number of breeding pairs increased from 6 to 22. The protection of the nesting sites and the establishment of one supplementary feeding site could have contributed positively to this increase. Overall, during 1994–2005 the number of breeding pairs remained stable but breeding success showed a significant decrease. During this period, two remarkable drops in the number of the breeding pairs were recorded in 1995–1997 and in 2003–2005. Concurrent with these decreases, a considerable number of individual adult fatalities were recorded, caused mainly by the consumption of poisoned carcasses. Poisoning can be considered as one of the main reasons of black vultures mortality in Dadia National Park and the adjacent areas.