Naslov
Predictive distribution model of rocky pastures with respect to the grazing intensity on the Northern Adriatic islands

Autori
Ljubičić, Ivica ; Jelaska, Sven D. ; Britvec, Mihaela

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

Izvornik
11. Hrvatski biološki kongres : zbornik sažetaka / Jelaska, Sven D. ; Klobučar, Goran I. V. ; Šerić Jelaska, Lucija ; Leljak Levanić, Dunja ; Lukša, Žaklin - Zagreb : Hrvatsko biološko društvo, 2012, 24-24

Skup
11. Hrvatski biološki kongres

Mjesto i datum
Šibenik, Hrvatska, 16.09.2012. - 21.09.2012

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Domaća recenzija

Ključne riječi
grazing; remote sensing; GIS; northern Adriatic islands

Sažetak
Rocky pastures are habitats that significantly increase the plant and landscape diversity. Nevertheless they are also endangered because of the frequent overloading of cattle and negligence due to the abandonment of traditional system of sheep farming. This research was conducted from the 2008 to 2010 on abandoned, moderately and intensively used rocky pastures on the northern Adriatic island of Pag, Krk and Cres. Based on the field collected data and LANDSAT ETM+ satellite image we have made a predictive map of rocky pastures with respect to the grazing intensity. Classification tree method (CT) have been used to develop predictive model than can estimate pasture capacity on the northern Adriatic islands. According to the model developed (with 83% accuracy on input data, Kappa statistics = 0.75), highest share of pastures was that of moderately used ones i.e. 40.36%. For latter it seems that on the northern Adriatic islands intensity of 1 to 1.5 sheep per hectare is the optimal intensity, that can improve not only the plant diversity, but “ecologically” based sheep manure as well.

Izvorni jezik
Engleski

Znanstvena područja
Biologija, Poljoprivreda (agronomija)

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