Naslov
Habitat suitability and potential expansion of the White Stork (Ciconia ciconia) breeding population in Slovenia

Autori
Radović, Andreja Denac, Damjan

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, ostalo

Izvornik
8th Conference of the European Ornithologists' Union / Fusani, Leonida ; Coppack, Timothy ; Strazds, Maris - Riga : Latvian Ornithological Society, 2011, 313-313

ISBN
978-9984-9747-2-9

Skup
8th Conference of the European ornithologists' union

Mjesto i datum
Riga, Latvija, 27.08.2011. - 30.08.2011

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
habitat; bird; stork

Sažetak
The breeding population of white stork (Ciconia ciconia) in Slovenia was 201 breeding pairs in 2010, varying from 193-240 in 1999-2010 period. The purpose of the study was to quantify the suitability of the whole territory of Slovenia for sustaining breeding population of white storks according to knowledge of the present breeding distribution and thus infer to potential further expansion of its breeding range. For that purpose we used Ecological Niche Factor Analysis (ENFA) as implemented in Biomaper software this time run from R environment (http://www.r-project.org/) using adehabitat package. All auxiliary maps were prepared using open source GIS software SAGA (System for Automated Geoscientific Analyses http://www.saga-gis.org/en/index.html). According to the ecogeographical variables that we assumed to be important for spatial distribution of white stork and data of presence from the white stork census we run ENFA in order to obtain habitat suitability index (hsi) for every pixel according to its suitability for white storks. The analysis was performed at 1 km resolution. The result of the ENFA is asc grid map having information for habitat suitability value for every pixel (Fig.1) ranging from 0-100. Marginality is mostly driven by presence of open habitats, missing of forest and lover values of precipitation. Specialisation is defined with mean slope and absolute height above the sea level following with amount of forest in the quadrate and precipitation. We tested significance of the obtained ENFA result with randomisation test run 9999 time that proved the significance of the niche detected (p< 1e-04). Our analysis revealed areas where current breeding range of the species’ could possibly expand in case of further population growth. With this analysis we proved the usefulness of already available datasets like Corine Land Cover (CLC), digital elevation data (DEM) and basic climate data analysed with free open-source software can give us additional information on bird species and its habitat.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA