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Identifier

000418836

Title

Χωρική προσέγγιση της αναπαραγωγικής οικολογίας του χρυσαετού (Aquila chrysaetos) στην Κρήτη : φέρουσα ικανότητα και παράγοντες που επηρεάζουν την επιλογή του βιοτόπου φωλεοποίησης

Alternative Title

A spatial approach to the nesting ecology of golden eagle (Aquila chrysaetos) on the island of crete: carrying capacity and factors that affect nest-site selection

Author

Σολάνου, Μαρία Π.

Thesis advisor

Μυλωνάς, Μωυσής

Reviewer

Πουλακάκης, Νίκος
Γιαννουλάκη, Μαριάννα

Abstract

At the current thesis: (a) factors that determine the selection of nest-sites of Aquila chrysaetos in Crete were explored via logistic regression, (b) prediction maps of the spatial distribution of the nests were constructed via maximum entropy and (c) detection of important areas for the species was attempted based on the proximity to the nest and rugged topography, namely steep cliffs that are suitable for gaining height when soaring. Additionally, Crete’s carrying capacity was evaluated and the overlap between territories and both areas of the NATURA 2000 sites network and olive groves – that is the expanding land cover type on the species’ territories on the island - were calculated. Data analysis was undertaken with up-to-date tools, like Geographic Information Systems (GIS) and modern statistical technics and software. We concluded that slope was the most determinant variable, while the map represented by the subset of topographic variables was able to predict nest-site of the species with highest accuracy according to the evaluation of the models’ fitting. In contrast, the subsets of bioclimatic variables and variables of human disturbance failed to predict the nest-sites’ positions with adequate accuracy. The overlap between territories and NATURA 2000 network only reaches 60%, while olive groves constitute 5,31 % of the species’ territories. Other metrics such as: telemetry data on the specie’s movements within their territories, variables related to specie’s prey and foraging land, monitoring of the tendencies and viability of the local population are necessary and would constitute a very useful tool for future conservation plans and proposals.

Language

Greek

Subject

Land use

Species distribution models

Territory

Μοντέλα κατανομής των ειδών

Χρήσεις γης

Χρυσαετός

Issue date

2018-11-23

Collection