Preliminary Assessment of Seagrass Bed in Colanggaman Islet, Cogtong Bay, Philippines

  • Tertulian C Tuyogon
  • Jerelijane Aaron
  • Marichu Libres
  • Inocencio Cosare


Abstract - Seagrass bed in Colanggaman Islet supply great deal of revenues and support the fisheries of the coastal dwellers within the Cogtong Bay. This ecosystem was assessed through a one-time sampling, wherein four sites of sampling areas (North, South, West, and East) were selected. A 1 x 1 m quadrat was used in the assessment along a 25 m transect line with three replicates per site to determine seagrass percent cover, composition, and abundance. Macro-invertebrate associates were assessed using 2m x 25 n strip transect. Results showed that there were two species of seagrass Enhalus acoroides (Lusay tag-as) and Thalassia hemprichii (Lusay mugbo). Enhalus acoroides had the highest mean percent cover and abundance. Sixteen species of macro-benthic invertebrates were also identified belonging to 13 families. The Strombus labiatus (aninikad) andAnadara granusa (litob) were among the species that were most abundant in the four sampling sites. The results of this study showed that the assessment generated a reliable data that could be used in the future for a stringent application of the management measures aimed at conserving the aquatic resources within the islet.


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