Inventory and Distribution of Edible Seaweeds in Ilocos Sur

Abstract

This study aimed to make an inventory and assessment of edible seaweeds in Ilocos Sur. It particularly sought to conduct taxonomic and ecological studies of edible seaweeds to include species composition, biomass, and spatial and seasonal distribution. Five sampling stations were considered namely: Teppeng, Sinait; Salomague, Cabugao; Nalvo, Sta. Maria; Bateria, San Esteban; and Gabao, Santiago. Taxonomic studies were conducted from September 2000 to November 2001. Collection of specimens for taxonomic studies was done monthly and identification was done at the University of Northern Philippines Marine Resources Development Center. Ecological studies, particularly on the occurrence and seasonality of the edible seaweeds, were done from October 2000 to September 2001. Sampling design was based on the method of Saito and Atobe (1970). Results showed that there is a high diversity ofedible seaweeds in locos Sur. Twenty three (23) species were identified, represented by eight (8) Chlorophyta (green) species, two (2) Phaeophyta (brown) species, andthirteen (13) Rhodophyta (red) species.
In terms of spatial distribution, stations, having sandy to rocky substrates were found to have more species than the sandy or rocky substratum. In terms of seasonal distribution, some seaweeds species werefoundto be persistent, others seasonal. Considering the high diversity of edible seaweeds in the province, proper collection, utilization and conservation of the resource are necessary. Researches on product formulation and possible culture of these seaweeds are deemed equally important.