The seaweed resources of the Philippines

Abstract

This review paper presents information on the production status of economically important seaweed species in the Philippines, new culture technologies for Halymenia durvillei and also an examination of the present but limited use of Sargassum. The country recorded its highest production volume of seaweeds (mainly eucheumatoids) in 2011 amounting to 1,840,832 metric tons (fresh weight). In the subsequent years, the Philippines recorded a steady decline in production which can be attributed to epiphytism, loss of genetic diversity due to the culture methods used (i.e. vegetative propagation), political unrest in the main farming areas of the Southern Philippines, and the frequent occurrence of typhoons. The more than 200,000 ha of farmable areas along available coastlines remain to be tapped and evaluated in order to determine which areas are suitable for seaweed farming. The haphazard harvesting of Sargassum led to the proclamation of Fisheries Order No. 250 which prohibits harvesting of Sargassum. Exploitation of Gelidiela acerosa remains a concern as there is no currently available culture technology for the species. The lack of comprehensive records on Philippine seaweed production needs to be addressed and its diverse algal resources remain to be explored.

Taxonomic reassessment of the Indo-Pacific Scytosiphonaceae (Phaeophyceae):Hydroclathrus rapanuiisp. nov. andChnoospora minimafrom Easter Island, with proposal ofDactylosiphongen. nov. andPseudochnoosporagen. nov.

“…Plurangial cuticles in Ch. minima have not been mentioned in other reports (Fotos 1981, Trono 1997, Abbott and Huisman 2004, Kraft 2009. Kraft (2009) suggested that the plurangia illustrated by Fotos (1981, figs.…”

ANALISIS LOGAM TIMBAL (Pb) PADA Kappaphycus alvarezii (Doty) ALGA MERAH YANG DI BUDIDAYA DI TELUK TOTOK MINAHASA TENGGARA, SULAWESI UTARA

“…Alga K. alvarezii adalah alga yang dibudidayakan secara komersial karena merupakan komoditi penting penghasil kappa karagenan. Ciri morfologi dari K. alvarezii adalah thallus yang silindris dengan permukaan yang licin dan kartilogenus (Trono, 1997). Warna thalus tidak tetap tergantung faktor lingkungan terkadang berwarna coklat, hijau, kuning dan kemerahan (Luning, 1990 (Sunarto, 2008).…”

The biodiversity of macroalgae in the coastal waters of Blongko Village, Sub-District of Sinonsayang, District of South Minahasa

“…Makroalga dapat dijumpai hidup dan melekat pada tipe substrat seperti pasir, berlumpur, bahkan pada tipe substrat keras seperti karang dan batu. Makroalga hidup dengan menancapkan dirinya pada substrat berlumpur, pasir, karang, karang mati, kulit kerang, batu, kayu bahkan sebagai epifit dengan menancapkan dirinya pada tumbuhan lain (Trono, 1997). Odum (1996) (Bold dan Wynne, 1985).…”