The area has been known as the major source of macrobenthic invertebrates in the southeastern most region of Eastern Samar. Gleaning has been the source of alternative livelihood for the locals. However, no regulation on the harvest of these resources is observed which could degrade its status. Survey was conducted using a 50 sqm belt transect method. The 7011 total samples were composed of 42 observed species distributed to echinoderms (81.46), sponges (11.27), mollusks (7.07), and arthropods (0.2) based on relative abundance. Species with higher economic value, i.e. mollusks and crustaceans were least abundant. Margalef index revealed species richness of 5.3, while Shannon diversity index was low (H’ = 1.26). The low status of macrobenthic invertebrates in the area can be attributed to severe or moderate exploitation/harvest pressure or environmental pollution due to active gleaning activities coupled with non-existing regulations specifically on harvesting, zoning and resource management in general.
KeywordsMacrobenthic InvertebratesMatarinao BaySpecies DiversitySeagrass Bed
Fortes, M. (1990) Seagrasses: A Resource Unknown in the ASEAN Region. ICLARM Education Series 5. https://www.researchgate.net/publication/39012908_Seagrasses_a_resource_unknown_in_the_ASEAN_region
Alfaro, A.C. (2006) Benthic Macro-Invertebrate Community Composition within a Mangrove/Seagrass Estuary in Northern New Zealand. Estuarine , Coastal and Shelf Science , 66, 97-110. https://doi.org/10.1016/j.ecss.2005.07.024
Ciasico, M.N.A., Villaluz, E.A., Geraldino, P.J.L., Dy, D.T. and Diola, A.G. (2006) Initial Stock Assessment of Four strombus Species (Mollusca: Gastropoda) in Eastern Samar (Central Philippines) with Notes on Their Fishery. The Philippine Scientist , 43, 52-68. https://doi.org/10.3860/psci.v43i0.371
Picardal, R.M. and Dolorosa, R.G. (2014) The Molluscan Fauna (Gastropods and Bivalves) and Notes on Environmental Conditions of Two Adjoining Protected Bays in Puerto Princesa City, Palawan, Philippines. Journal of Entomology and Zoology Studies , 2, 72-90. https://www.entomoljournal.com/vol2Issue5/pdf/34.1.pdf
Wagey, B.T., Kreckhoff, R.L. and Bucol, A.A. (2017) Comparison of Abundance and Diversity of Benthic Macroinvertebrates between Disturbed and Non-Disturbed Seagrass-Algal Beds in Central Philippines. https://www.academia.edu/73522184/Comparison_of_abundance_and_diversity_of_benthic_macroinvertebrates_between_disturbed_and_non_disturbed_seagrass_algal_beds_in_central_Philippines
Unsworth, R.K.F., Hinder, S.L., Bodger, O.G. and Cullen-Unsworth, L.C. (2007) Food Supply Depends on Seagrass Meadows in the Coral Triangle. Environmental Research Letters , 9, Article 094005. https://doi.org/10.1088/1748-9326/9/9/094005
Coll, M., Schmidt, A., Romanuk, T. and Lotze, H.K. (2011) Food-Web Structure of Seagrass Communities across Different Spatial Scales and Human Impacts. PLOS ONE , 6, e22591. https://doi.org/10.1371/journal.pone.0022591
Lin, J., Huang, Y., Arbi, U.Y., Lin, H., Azkab, M.H., Wang, J., et al . (2018) An Ecological Survey of the Abundance and Diversity of Benthic Macrofauna in Indonesian Multi-Specific Seagrass Beds. Acta Oceanologica Sinica , 37, 82-89. https://doi.org/10.1007/s13131-018-1181-9
Ilias, N., Shau, A.T., Rick, F., Peng, T.C., Nilamani, N., Razalli N.M. and Yasin, Z. (2021) Diversity of Epibenthic Intertidal Molluscan Communities on the Seagrass Beds of Middle Bank, Penang, Malaysia. Phuket Marine Biological Center Research Bulletin , 78, 39-47.
Craig, P., Green, A. and Tuilagi, F. (2008) Subsistence Harvest of Coral Reef Resources in the Outer Islands of American Samoa: Modern, Historic and Prehistoric Catches. Fisheries Research , 89, 230-240. https://doi.org/10.1016/j.fishres.2007.08.018
de la Torre-Castro, M., di Carlo, G. and Jiddawi, N.S. (2014) Seagrass Importance for a Small-Scale Fishery in the Tropics: The Need for Seascape Management. Marine Pollution Bulletin , 83, 398-407. https://doi.org/10.1016/j.marpolbul.2014.03.034
Furkon, N.N., Ambo-Rappe, R., Cullen-Unsworth, L.C. and Unsworth, R.K.F. (2019) Social-Ecological Drivers and Dynamics of Seagrass Gleaning Fisheries. Ambio , 49, 1271-1281. https://doi.org/10.1007/s13280-019-01267-x
Capacite, E.C. and Capito, N. (2024) Species Composition, Abundance and Distribution of Seagrass in the Intertidal Zone of Matarinao Bay. Undergraduate Thesis, Eastern Samar State University.
Libres, M.C. (2015) Species Diversity of Macro-Benthic Invertebrates in Mangrove and Seagrass Ecosystems of Eastern Bohol, Philippines. Asia Pacific Journal of Multidisciplinary Research , 3, 128-134. https://oaji.net/articles/2016/1543-1464846014.pdf
Palomares, M.L.D. and Pauly, D. (2025) Sea Life Base. World Wide Web Electronic Publication. https://www.sealifebase.org
Deca Net (2024). World Register of Marine Species. https://www.marinespecies.org/aphia.php?p=taxdetails&id=1061754
de Voogd, N.J., Alvarez, B., Boury-Esnault, N., Cárdenas, P., et al . (2025) World Porifera Database. https://www.marinespecies.org/porifera
Lu, H., Wagner, H.H. and Chen, X. (2007) A Contribution Diversity Approach to Evaluate Species Diversity. Basic and Applied Ecology , 8, 1-12. https://doi.org/10.1016/j.baae.2006.06.004
Mirzaie, F., Ghorbani, R. and Montajami, S. (2013) A Comparative Study of Different Biological Indices Sensitivity: A Case Study of Macroinvertebrates of Gomishan Wetland, Iran. World Journal of Fish and Marine Sciences , 5, 611-615.
Gotelli, N.J. and Chao, A. (2013) Measuring and Estimating Species Richness, Species Diversity, and Biotic Similarity from Sampling Data. In: Encyclopedia of Biodiversity , Elsevier, 195-211. https://doi.org/10.1016/b978-0-12-384719-5.00424-x
Fogarty, M.C., Fewings, M.R., Paget, A.C. and Dierssen, H.M. (2017) The Influence of a Sandy Substrate, Seagrass, or Highly Turbid Water on Albedo and Surface Heat Flux. Journal of Geophysical Research : Oceans , 123, 53-73. https://doi.org/10.1002/2017jc013378
Batomalaque, G.A., Arce, B.P., Hernandez, M.M. and Fontanilla, I.C. (2010) Survey and Spatial Distribution of Shoreline Malacofauna in Grande Island, Subic Bay. Philippine Journal of Science , 139, 149-159. https://www.researchgate.net/publication/267826763_Survey_and_Spatial_Distribution_of_Shoreline_Malacofauna_in_Grande_Island_Subic_Bay
Klumpp, D.W., Salita-Espinosa, J.S. and Fortes, M.D. (1992) The Role of Epiphytic Periphyton and Macroinvertebrate Grazers in the Trophic Flux of a Tropical Seagrass Community. Aquatic Botany , 43, 327-349. https://doi.org/10.1016/0304-3770(92)90046-l
Cob, Z.C., Arshad, A., Bujang, J.S., Bakar, Y., Simon, K.D. and Mazlan, A.G. (2012) Habitat Preference and Usage of Strombus Canarium Linnaeus, 1758 (Gastropoda: Strombidae) in Malaysian Seagrass Beds. Italian Journal of Zoology , 79, 459-467. https://doi.org/10.1080/11250003.2012.670273
Mahadevan, S. and Nayar K.N. (1974) Ecology of Pearl Oyster and Chank Beds. https://eprints.cmfri.org.in/652/
Ausich, W.I. and Webster, G.D. (2008) Echinoderm Paleobiology. Indiana University Press. https://iupress.org/9780253351289/echinoderm-paleobiology/
Sophian, M., Kasihmuddin, M. and Cob, Z. (2021) Distribution of Benthic Macroinvertebrates in Seafloor Northward of Pulau Indah, Klang. Pertanika Journal of Science and Technology , 29, 641-662. https://doi.org/10.47836/pjst.29.1.34
de la Cruz, M.J.L., Flores, J.R.P., Magramo, M.M., Madas, C. and Terunez, M. (2012) Macrobenthic Composition of Sea Water Associated with Seagrass in East and West Portions of the Igang Bay, Nueva Valencia, Guimaras. JPAIR Multidisciplinary Research , 7, 106-118. https://doi.org/10.7719/jpair.v7i1.156
Mahilac, H.M.O., Tandingan, J.P., Torres, A.G., Amparado Jr, R. and Roa-Quiaoit, H.A. (2023) Macroinvertebrate Assessment in Seagrass Ecosystem in Sinacaban Municipality, Misamis Occidental, Philippines. Biodiversitas Journal of Biological Diversity , 24, 5586-5597. https://doi.org/10.13057/biodiv/d241040
Sarker, J., Tanmay, M.H., Rahman, F. and Patwary, S.A. (2016) Macrobenthic Community Structure as a Bio-Indicator for the Assessment of Coastal Water Pollution in Greater Noakhali-Bangladesh. Journal of Coastal Zone Management , 19, Article 2.
Freire, F., Diola, A.G. and Sotto, F.B. (1998) Commercially-Important Species in Bantayan Island, Cebu [Philippines] Based on Market Survey and Gleaning Activities. https://api.semanticscholar.org/CorpusID:132280073
Colvin, T.J. and Snelgrove, P.V.R. (2025) Role of Seagrass Physical Structure in Macrofaunal Biodiversity-Ecosystem Functioning Relationships. Marine Ecology Progress Series , 754, 35-49. https://doi.org/10.3354/meps14774
Rodil, I.F., Lohrer, A.M., Attard, K.M., Hewitt, J.E., Thrush, S.F. and Norkko, A. (2021) Macrofauna Communities across a Seascape of Seagrass Meadows: Environmental Drivers, Biodiversity Patterns and Conservation Implications. Biodiversity and Conservation , 30, 3023-3043. https://doi.org/10.1007/s10531-021-02234-3
Rodil, I.F., Lohrer, A.M., Attard, K.M., Thrush, S.F. and Norkko, A. (2022) Positive Contribution of Macrofaunal Biodiversity to Secondary Production and Seagrass Carbon Metabolism. Ecology , 103, e3648. https://doi.org/10.1002/ecy.3648
Wong, M.C. and Dowd, M. (2015) Patterns in Taxonomic and Functional Diversity of Macrobenthic Invertebrates across Seagrass Habitats: A Case Study in Atlantic Canada. Estuaries and Coasts , 38, 2323-2336. https://doi.org/10.1007/s12237-015-9967-x