Includes references.

Vol. 41 -- Water supply in the Philippines: Cebu as object of a case study / Herman van Engelen, SVD -- Monthly variation of agar quality of some gracilarioids from the Philippines (Rhodophyta, Gracilariaceae) / Maria Rovilla J. Luhan, Maria Salvacion Ding R. Ferrer, Jiro Tanaka and Yusho Aruga -- Comparative NH4+ uptake of Caulerpa lentillifera (Chlorophyta, Caulerpales) and Gracilariopsis heteroclada (Rhodophyta, Gracilariales): Competition between a cultured alga versus an unwanted species? / Rupert Ian C. Torrefiel, Kristel Jayne Mislos, Amaike Reina Apalisok and Danilo T. Dy -- Antibacterial properties of the different thallus parts of Sargassum polycystum (Fucales, Phaeophyceae) / Frederick A. Uy and Danilo B. Largo --Collection and conservation status of the ferns and fern allies (Pteridophytes) on Panay island, Philippines (1841-2003) / Julie Fenete Barcelona -- Leaf architecture of ten Philippine Psychotria species (Rubiaceae) / M.C.N. Banaticla and I.E. Buot Jr. -- Gradient analysis of the plant communities on Mt Halcon summit zone, Mindoro island, Philippines / Emelina H. Mandia -- Diuretic activity of a semi-purified glycoside from carrot (Daucus carota L.) / Dunatila Y. Roma -- Vegetation analysis of forest over limestone in two sites in Batangas, Philippines / Apollo B. Cordon, Anna Lyn B. Andres, Ma. Rowena L. Flores, Michael S. Matias and Esperanza Maribel G. Agoo -- Description of the Cebu creeping waterbug Stalocoris platerosi sp.n. (Heteroptera: Naucoridae) / Herbert Zettel -- Organic matter assimilation efficiency of reef flat sea cucumbers in Cordova, Cebu, central Philippines / Melanie D. Ybañez, Bennet Christian P. Nuevarez, Rosa Celia M. Poquita, Dhael S. Remolino and Annie G. Diola -- Notes on the species composition, relative abundance and fishery of sea cucumbers (Echinodermata, Holothuroidea) in northwestern Iligan Bay, Philippines / Ephrime B. Metillo, Dominador T. Tarranza IV and Joy B. Arado -- The endemic and threatened species of birds in Mt. Kimangkil range, Bukidnon province, Mindanao island / Franelyn J. Saguindang and Olga M. Nuñeza -- Screening and characterization of indigenous aquatic bacteria inhibitory against Vibrio harveyi, cause of luminescent vibriosis in black tiger shrimp Penaeus monodon / Alfredo J. Anceno II -- Metal pollution of Abatan River - Maribojoc Bay (Bohol, Philippines): A preliminary study / Concepcion S. Mendoza -- The Golden Ratio and the area between certain polynomials / Ramon M. Echevarria, Jr. -- A group of affine transformations of (1 ‡ 15 )2 /Ramon M. Echevarria, Jr. -- Using requirements management and quality assurance data from past projects to improve future performance / Pauline C. Wade -- Disseminating Philippine census data through the Web / Daisy Cusi, Corné van Elzakker and Barend Köbben -- Notes and Information

English.