title: 17-year change in species composition of mixed seagrass beds around Santiago Island, Bolinao, the northwestern Philippines.
abstract: Effects of fish culture can alter the adjacent ecosystems. This study compared seagrass species compositions in 2012 with those in 1995, when fish culture was less intensive compared to 2012 in the region. Observations were conducted at the same four sites around Santiago Island, Bolinao: (1) Silaqui Island, (2) Binaballian Loob, (3) Pislatan and (4) Santa Barbara, and by using the same methods as those of Bach et al. (1998). These sites were originally selected along a siltation gradient, ranging from Site 1, the most pristine, to Site 4, a heavily silted site. By 2012, fish culture had expanded around Sites 2, 3 and 4, where chlorophyll a (Chl a) was greater in 2012 than in 1995 by one order of magnitude. Enhalus acoroides and Cymodocea serrulata, which were recorded in 1995, were no longer present at Site 4, where both siltation and nutrient load are heavy.
authors.affiliation: Mutsu Institute for Oceanography, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 690 Kitasekine, Mutsu, Aomori 035-0022, Japan. Electronic address: y-tanaka@jamstec.go.jp.
authors.forename: Yoshiyuki
authors.initials: Y
authors.lastname: Tanaka
authors.affiliation: Marine Science Institute, University of the Philippines, Diliman, Quezon City 1101, Philippines.
authors.forename: Gay Amabelle
authors.initials: GA
authors.lastname: Go
authors.affiliation: Graduate School of Information Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguroku, Tokyo 152-8552, Japan.
authors.forename: Atsushi
authors.initials: A
authors.lastname: Watanabe
authors.affiliation: Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwanoha 5-1-5, Kashiwa 277-8564, Japan.
authors.forename: Toshihiro
authors.initials: T
authors.lastname: Miyajima
authors.affiliation: Akkeshi Marine Station, Field Science Center for Northern Biosphere, Hokkaido University, Aikappu, Akkeshi, Hokkaido 088-1113, Japan.
authors.forename: Masahiro
authors.initials: M
authors.lastname: Nakaoka
authors.affiliation: Institute of Fisheries R&D, Mindanao State University, 9023 Naawan, Misamis Oriental, Philippines.
authors.forename: Wilfredo H
authors.initials: WH
authors.lastname: Uy
authors.affiliation: Graduate School of Information Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguroku, Tokyo 152-8552, Japan.
authors.forename: Kazuo
authors.initials: K
authors.lastname: Nadaoka
authors.affiliation: Mutsu Institute for Oceanography, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 690 Kitasekine, Mutsu, Aomori 035-0022, Japan.
authors.forename: Shuichi
authors.initials: S
authors.lastname: Watanabe
authors.affiliation: Marine Science Institute, University of the Philippines, Diliman, Quezon City 1101, Philippines.
authors.forename: Miguel D
authors.initials: MD
authors.lastname: Fortes
mesh_terms: D000818:Animals; D017756:Aquaculture; D002734:Chlorophyll / Q000032:analysis; D000077194:Chlorophyll A; D017753:Ecosystem; D031321:Hydrocharitaceae; D062312:Islands; D008137:Longitudinal Studies; D010679:Philippines; D011156:Population Density
chemical_list: D002734:Chlorophyll; D000077194:Chlorophyll A
keywords: Bolinao; Fish culture; Long-term change; Seagrass; Species composition; Tropical