Type of Intraspecific and Interspecific Interaction Among Three Heron Species, while Foraging Around Pulau Dua Nature Reserve, Serang, Banten's province

DEWI ELFIDASARI♥

Jurusan Biologi FMIPA Universitas Al Azhar Indonesia, Jakarta 12110

ABSTRACT

This research intends to know interaction type among three heron species while foraging around Pulau Dua Nature Reserve, Serang Banten's Province. Observational method that is utilized is direct observing up to 6 months, pictures taking supported watch utilize Handycam by focal observation method, meanwhile data analyze was done by using scan sampling method. The research’s result points out that interaction during foraging for three species herons, namely Casmerodius albus, Egretta garzetta, and Bubulcus ibis, cover neutralism, competition and cooperation. C. albus showed cooperative's interaction as much as 66.67%. This interaction is happening between C. albus and Phalacrocorax sp. The competition and neutralism on C. albus each of them are 16.67%. E. garzetta showed neutralism as much as 50%, between E. garzetta and other waterbird which are Threskiornis melanocephalus and Plegadis falcinellus. Meanwhile, cooperative as high as 37.50% and competitions as high as 12.50%. B. ibis showed neutralism, as high as 44.44% between B. ibis and both Ardeola speciosa and P. falcinellus. Neutralism and competition interaction each of them are 33.33% and 22.22%.

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