sd-sample article 1 Dahlia C. Apodaca, PhD Mines and Geosciences Bureau Department of Environment and Natural Resources Johnrob Y. Bantang, PhD National Institute of Physics University of the Philippines Diliman Wilfredo L. Campos, PhD College of Arts and Sciences University of the Philippines Diliman Relicardo M. Coloso, PhD Southeast Asian Fisheries Development Center/Aquaculture Department Tigbauan, Iloilo Maria Phythias B. Espino, PhD Institute of Chemistry University of the Philippines Diliman Edna G. Fortes, PhD Marine Science Institute University of the Philippines Diliman Alipio T. Garcia, PhD Department of Physics University of the Philippines Baguio Luis B. Maria B. Garcia, DFSc Institute of Biology University of the Philippines Diliman Paul John L. Geraldino, PhD Department of Biology University of San Carlos, Cebu City Francisco M. Heralde III, PhD Department of Biochemistry and Molecular Biology University of the Philippines Manila REVIEWERS FOR THIS ISSUE January-June 2013 • Volume 25 No. 1 Vincent V. Hilomen, PhD Institute of Biological Sciences University of the Philippines Los Baños Hilton Y. Lam, PhD Department of Clinical Epidemiology University of the Philippines Manila Lawrence LIiao, PhD Graduate School of Biosphere Science Hiroshima University, Japan Jose Ernie C. Lope, PhD Institute of Mathematics University of the Philippines Diliman Hildie Maria Nacorda, PhD Marine Science Institute University of the Philippines Diliman Minerva S.D. Olympia, PhD Institute of Fish Processing and Technology University of the Philippines Visayas Perry S. Ong, PhD Institute of Biology University of the Philippines Diliman Gil Nonato Santos, PhD Department of Physics De La Salle University Benjamin M. Vallejo, PhD Institute of Environmental Science and Meteorology University of the Philippines Diliman