Dr. William SM. Gruezo is MNH's curator for composites. He has the rank of Professor 12 at the Institute of Biological Sciences, College of Arts and Sciences, UPLB.

Dr. Gruezo has a PhD in Plant Taxonomy (1988) from The University of Alberta and he is an expert of Biosystematics and Quaternary Environments.

His research interests include biodiversity inventory and assessment of Philippine plants with emphasis on updating conservation status such as endangered species, rare species, threatened/near-extinct species, etc.; collection, evaluation, conservation and documentation of germplasm of wild relatives of agricultural crops (and their ultimate utilization in plant breeding).

He is also involved in biosystematic studies of Philippine Lichens with emphasis on their potential uses such as source of antibiotics and medicines, biological indicators of pollution, famine food, etc.; assessment of genetic erosion in Philippine agricultural crops and wild relatives inventory and mapping of extant/remaining populations of wild-type (Niu kata) coconuts in the Philippines; parks and botanical gardens establishment, development and management with emphasis on conservation of tropical and subtropical plant genetic resources

Dr. Gruezo is an Academician of the National Academy of Science and Technology of the Philippines.

Publications

(Note: Senior author if other than WSG indicated by underscore).

_________. 1983. Lobaria clemesiae Vain. (Lobariaceae, Lichenes) in Halmahera Island. Gardens' Bulletin Singapore 36: 233- 236.

_________. 1984a. Self-sown, wild-type coconuts in the Philippines. Biotropica 16 (2): 140-147. (with Hugh C. Harries).

_________. 1985a. Notes on Phoenix hanceana var. philippinensis in the Batanes Islands, Philippines. Principes 29(4): 170- 176. (with E.S. Fernando as junior author)

_________. 1992. Conservation status of Philippine Biota. 1. Dawsonia longifolia (Bruch. & Schimp.) Zant. var. superba (Grev.) Zant., Polytrichaceae. Asia Life Sciences, The Asian International Journal of Life Sciences 1(1 & 2): 143-147.

_________. 1994a. Musci Philippinensis Exsiccati: Fascicle 4 (Palawan Mosses). Asia Life Sciences, The Asian International Journal of Life Sciences 3(1): 21-24. (with B.C. Tan as first author and S. Duffield as third author).

_________. 1994b. Taxonomy of Arnica L. subgenus Chamissonis Maguire (Asteraceae). Asia Life Sciences, The Asian International Journal of Life Sciences 3(2): 88-172. (with Keith E. Denford as second author).

_________. 1994c. Carotenoids in certain species of lichen from tropical region. Feddes Repertorium 105(1-2): 89-96. [with B. Czeczuga, G. Lim, T. Koon Tan, H. Streimann and U.A. Jenie as co-authors]

_________. 1995a. Cytogeographical investigation of Arnica L. subgenus Chamissonis Maguire (Asteraceae) in western North America. Asia Life Sciences, The Asian International Journal of Life Sciences 4(1): 95-124. (with Keith E. Denford as second author).

_________. 1995b. Foliar flavonoid variation in Arnica L. subgenus Chamissonis Maguire (Asteraceae) in western North America. Asia Life Sciences, The Asian International Journal of Life Sciences 4(2): 151-170. (with Keith E. Denford as second author).

_________. 1996. Vegetation of Mt. Labo and vicinity, Camarines Norte Province, (Luzon, Philippines). Asia Life Sciences 5(2): 63-106. [with Rodrigo Badayos as junior author)

_________. 1998a. Species alpha diversity of Pagbilao Grande Island vegetations, Quezon Province, Philippines. Asia Life Sciences 7(1): 39-92.

_________. 1999. Of Philippine plants and places: an ethnobiological memoir. Asia Life Sciences 8(1): 15-56.

_________. 2000b. Conservation Status of Philippine Biota 2. Sararanga philippinensis Merr., Family Pandanaceae. Asia Life Sciences 9(2): 189-204. (with P.M. Zamora as junior author).

_________. 2002b. Conservation Status of Philippine Biota 3. Medinilla dolichophylla Merr. (Family Melastomataceae) – a rare, endemic plant species with ornamental value. Asia Life Sciences 11(2): 127-134.

_________. 2004b. Conservation Status of Philippine Biota 4. Salacca clemensiana Becc. (Arecaceae/Palmae) – a Mindanao endemic palm with high commercial, landscape and ornamental value. Asia Life Sciences 13(1 &2): 81-98. (with V.B. Amoroso as junior author).

_________. 2005a. Numerical analyses of Arnica L. subgenus Chamissonis Maguire (Asteraceae: Senecioneae) using TAXMAP and CLUSTAN methods. Asia Life Sciences 14(1): 1-22. 

_________. 2005b. Preliminary list of soil mites (Acari) from the Samar Island National Park, Philippines with descriptions of a new species and a new record of Oribatida. Asia Life Sciences 14(2): 191-206. with L.A. Corpuz-Raros as senior author.

_________. 2006a. Revision of the lichen genus Lobaria (Schreb.) Hoffm. in the Philippines. I. Subgenus Lobaria Section Lecanolobarina Vain. Asia Life Sciences 15(1): 1-46. 

_________. 2006b. Revision of the lichen genus Lobaria (Schreb.) Hoffm. in the Philippines. II. Subgenus Lobaria Section Lobaria. Asia Life Sciences 15(2): 107-172. 

_________. 2006c. Ptyctimous mites mainly from Samar Island of the Philippines (Acari: Oribatida). Genus 17(3): 449-470. (with Niedbala, W. and L.A. Corpuz-Raros as senior and second authors, respectively)

_________. 2007a. Revision of the lichen genus Lobaria (Schreb.) Hoffm. in the Philippines. III. Subgenus Ricasolia (DeNot.) Gruezo comb. et stat. nov. Asia Life Sciences 16(1): 1-18

_________. 2007b. Two new species of predatory mites of the family Cunaxidae (Acari) from Java, Indonesia. Asia Life Sciences 16(2): 175-181l. (with L.A. Corpuz-Raros as senior author)

_________. 2007c. Conservation status of Philippine Biota 5. Arenga ambong Beccari – an immediately endangered endemic palm species (Arecaceae/Palmae). Asia Life Sciences 16(2): 237-277. (with Romeo R. Lerom as junior author)

_________. 2008a. Flora and vegetation of Mankayan, Benguet Province, Philippines I. Teneb-Lapangan Ridge and Victoria Gold area. Asia Life Sciences 17(1): 151-177. 

_________. 2008b. Flora and vegetation of Mankayan, Benguet Province, Philippines II. Tailings Dams 3, 4 and 5. Asia Life Sciences 17(2): 349-390.

_________. 2008c. A revision of the genus Basiceremaeus Corpuz-Raros 1979 (Acari: Oribatida: Otocepheidae) including the description of a new species from Bangladesh. Asia Life Sciences 17(2): 179-188. (with L.A. Corpuz-Raros as senior author)

_________. 2009a. Vegetation and wildlife fauna of the Emerald Bay coast, Zambales Province, Philippines. Asia Life Sciences 18(1): 155-175.

_________. 2009b. Three new species of Phyllhermannia Berlese 1916 (Acari: Oribatida: Hermanniidae) from the Philippines, with notes on the chaetotaxy of notogaster and legs in this genus. Asia Life Sciences 18(1): 17-34. (with L.A. Corpuz-Raros as senior author) 

_________. 2009c. Vegetation and flora of Naujan Lake National Park watershed zone, Mindoro Oriental Province, Philippines, I. Upper Watershed Zone. Asia Life Sciences 18(2): 281-315.

_________. 2009d. New species and records of Oribatids (Acari: Oribatida) from Palawan Island, Philippines with a note on Acrotocepheus duplicornu tus (Aoki) from Bangladesh. Asia Life Sciences 18(2): 177-194. (with L.A. Corpuz-Raros as senior author)

_________. 2009e. Lichen Pyxine cocoes (Sw.) Nyl. (Physciaceae) as a potential biomonitor for atmospheric pollution in Southern Luzon, Philippines. Asia Life Sciences 18(2): 215-230. (with P.C.B. Pabroa, L.L. Quirit, K.N. Hernandez and L.S. Balansay as lead authors)

_________. 2010a. Vegetation and flora of Naujan Lake National Park watershed zone, Mindoro Oriental Province, Philippines, II. Lower Watershed Zone. Asia Life Sciences 19(1): 71-114. 

_________. 2010b. Vegetation and flora of Naujan Lake National Park watershed zone, Mindoro Oriental Province, Philippines, III. Diversity, conservation status and functional roles. Asia Life Sciences 19(2): 263-314.

_________. 2010c. Comparative diversity of birds across habitat gradients in the Polillo Islands, Philippines. Asia Life Sciences Supplement 4: 83-109. (with Gonzalez, J.C.T. & P.P. Ocampo Jr. as first and second authors).

_________. 2011. New species and records of Oribatida and other soil-inhabiting mites (Acari) mainly from Luzon and Mindanao Islands, Philippines. Asia Life Sciences 20(1): 37-61. (with L.A. Corpuz-Raros as senior author)