Factors shaping distribution and abundance of raptors wintering in two large Mediterranean islands

Panuccio, M., Agostini, N., Nelli, L., Andreou, G. and Xirouchachis, S. (2019) Factors shaping distribution and abundance of raptors wintering in two large Mediterranean islands. Community Ecology, 20(1), pp. 93-103. (doi:10.1556/168.2019.20.1.10)

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Abstract

A growing number of ecological studies suggest that animal distributions are not only influenced by classical ecological features such as habitat availability, but also by the motion capacity of the studied animal. Here we analyse the diversity and density of two wintering raptor communities from Crete and Sicily, two large Mediterranean islands located along migratory flyways. We performed 611 and 1030 km of transects in Crete and Sicily respectively, examining the spatial distribution of raptors in relation to land use, topography, raptor species diversity and abundance. Our results show that community diversity and specific abundance are strictly related in accordance with the ‘More Individuals Hypothesis’. Comparing the two most common raptors, the density of the Eurasian kestrel was the highest in Sicily and that of the common buzzard in Crete. An overall positive effect of Eurasian kestrel density on that of the common buzzard was found in both islands, but higher in Crete. Our findings suggest that the distribution and density of the Eurasian kestrel, because of its higher movement ability, are less influenced by the presence of ecological barriers along potentially migratory flyways. We cannot exclude that higher inter specific competition with common buzzards in Crete might have pushed the smaller species to cross the Mediterranean Sea in order to overwinter in Africa.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Nelli, Dr Luca
Authors: Panuccio, M., Agostini, N., Nelli, L., Andreou, G., and Xirouchachis, S.
Subjects:Q Science > QL Zoology
College/School:College of Medical Veterinary and Life Sciences > Institute of Biodiversity Animal Health and Comparative Medicine
Journal Name:Community Ecology
Publisher:Akadémiai Kiadó
ISSN:1585-8553
ISSN (Online):1588-2756
Published Online:12 July 2019
Copyright Holders:Copyright © 2019 The Authors
First Published:First published in Community Ecology 20(1):93-103
Publisher Policy:Reproduced under a Creative Commons License

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