Rene N. Rollon, Ph.D.
Professor 10
Contact(s): or or
Educ. Background:
Ph.D. Agricultural and Environmental Sciences (1998) Wageningen Agricultural University
(WAU Wageningen) – International Institute for Infrastructural, Hydraulic &
Environmental Engineering (IHE Delft) The Netherlands
Head: Aquatic Ecology Laboratory

Interests / ProjectsCourses Handled & Other InformationPublication


  • Aquatic Ecosystems
  • Coastal Marine Biology and Ecology
  • Mangrove and Seagrass Ecology
  • Coastal Resources Management
  • Environmental Impact Assessment
  • Environmental Sciences

Research Projects:

  • Coral Reef Visualization and Assessment (CoRVA)
  • Blue Carbon Project (BlueCARES) UP-JICA
  • National Assessment of Coral Reef Ecosystems (NACRE)
  • ICRMP for Masinloc (Zambales) and Sta. Ana (Cagayan)
  • Integrated Coastal Enhancement: Coastal Research, Evaluation and Adaptive Management for Climate Change (2008 – 2011)
  • Guimaras: Impact of oil spill on seagrass communities (2007 – 2010)
  • Pacific Seaboard Phase II (Nov 2005 – 2009)
  • Biodiversity Rresearch Program in Mount Malindang (2003 – 2006)
  • Connectivities of seagrass communities along the Pacific seaboard (2004 – 2006)
  • Genetic connectivities of seagrass populations along the Pacific seaboard, NSRI UP Diliman (2004-2005)
  • Biodiversity-Coastal Resource Management Project: Lopez Jaena, Misamis Occidental (1999)
  • PREDICT – Prediction of resilience and recovery of disturbed tropical coastal communites; Task 3: Macrophyte reproductive capacities and genetic diversity; Funding agency: European Union; Collaborating countries: Spain, Netherlands, Denmark, United Kingdom, Vietnam, Philippines (1999-2003)
  • Connectivities of the seagrass meadows in western Luzon, OVCRD University of the Philippines (2003)
  • Pacific Seaboard Project 1 (PACSEA 1): Vegetative and reproductive dynamics of Philippines seagrasses along the Pacific coasts; Study Leader, Macrophyte component Collaborating institutions: Dela Salle University and the Marine Science Institute UPDIL; Collaborating
  • Institutions in Samar: University of Eastern Philippines, Catarman; Eastern Samar State College, Borongan (1999-2004)

Courses Teaching:

  • Env. Sci. 1 (Environmental and Society)
  • Env. Sci. 282 (Env’l Planning, Risk, and Impact Assessment)
  • Env. Sci. 226.1 (Aquatic Ecology Sampling Technique)
  • Env. Sci. 227 (Quantitative Ecology)
  • Env. Sci. 296 (Graduate Seminar)
  • Env. Sci. 297 (Special Topics in Environmental Science)
  • Env. Sci. 299 (Independent Master’s Study)
  • Env. Sci. 399 (Independent Doctoral Study)

Other Relevant Information:

Membership in Scientific Organizations

  • Charter Member (1990), Philippine Association of Marine Science, Inc.
  • Charter Member (2012), Philippine Environmental Science Association, Inc.


  • Yoshikai, M., Nakamura, T., Rempei, S., Argamosa, R., Okamoto T., Rollon, R., Basina, R., Primavera-Tirol, Y., Blanco, A.C., Adi, N.S., Nadaoka, K. (2020) In press. Scaling relations and substrate conditions controlling the complexity of Rhizophora prop root system. Estuarine, Coastal and Shelf Science. (ISI)
  • Suwa, R., Rollon R., Sharma, S., Yoshikai, M., Albano, G.M.G., Ono, K., Ati, R.N.A., Kusumaningtyas, M.A., Kepei, T.L., Maliao, R.J., Primavera-Tirol, Y.H., Blanco, A.C., Nadaoka, K. (2020) In press. Mangrove biomass estimation using canopy height and wood density in the South East and East Asian Regions. Estuarine, Coastal and Shelf Science. (ISI)
  • Palermo, J.D.H., Labrador, K.L., Agmata, A.B., Pante, M.J.R., Rollon, R.N., David, L.T. 2020. Susceptibility of Sardinella lemuru to emerging microplastic pollution. Global J. Environ. Sci. Manage. 6(3): 373-384 (ISI)
  • Rollon, R.N., Villamayor, B.M.R., Oropesa, L.J.B., Samson, M.S. 2017. Prop root production response of planted Rhizophora to abrupt subsidence-induced sea level rise. Ocean & Coastal Management 142(C): 198-208 (ISI)
  • Villamayor, B.M.R., Rollon, R.N., Samson, M.S., Albano, G.M.G., Primavera, J.H. 2016. Impact of Haiyan on Philippine mangroves: implications to the fate of the widespread monospecific Rhizophora plantations against strong typhoons. Ocean & Coastal Management 132(C): 1-14 (ISI)
  • Primavera, J.H, dela Cruz, M., Montilijao, C., Consunji, H., dela Paz, M., Rollon, R.N., Maranan, K., Samson, M.S., Blanco, A. 2016. Preliminary assessment of post-Haiyan mangrove damage and short-term recovery in Eastern Samar, central Philippines. Marine Pollution Bulletin 109: 744-750 (ISI)
  • Ramos, D.A.E., Aragones, L.V.,Rollon, R.N. (2015) Linking integrity of coastal habitats and fisheries yield in the Mantalip Reef System. Ocean & Coastal Management 111: 62-71 (ISI)
  • Rollon, R.N., Samson, M.S., Villamayor, B.M.R., Albano, G.M.G., Siringan, F.P. 2015. Attributes of the earthquake-uplifted intertidal habitats and their implications to the Maribojoc and Loon coastal fisheries.Ocean & Coastal Management 111: 12-24 (ISI)
  • Siringan, F.P., Sta. Maria, M.Y.Y., Samson, M.S., Licuanan, W.R.Y.,Rollon, R. 2013. Chapter 5: Coastal Integrity Vulnerability Assessment Tool. In: MERF. 2013. Vulnerability Assessment Tools for Coastal Ecosystems: A Guidebook. Marine Environment and Resources Foundation, Inc.: Quezon City, Philippines.
  • Licuanan, W.R.Y., Siringan, F.P., Mamauag, S.S., Samson, M.S., Aliño, P.M.,Rollon, R.N., Sta. Maria, M.Y.Y., Quibilan, M.C.C., Martinez, R.J.S., España, N.B., Geronimo, R.C., Villanoy, C.L., Cabrera, O.C., Salamante, E.E., Miclat, E.F.B., David, L.T. 2013. Chapter 4: Integrated Coastal Sensitivity, Exposure, and Adaptive Capacity to Climate Change. In: MERF. 2013. Vulnerability Assessment Tools for Coastal Ecosystems: A Guidebook. Marine Environment and Resources Foundation, Inc.: Quezon City, Philippines.
  • Primavera, J.H., Rollon, R.N., & Samson, M.S. 2011. The Pressing Challenges of Mangrove Rehabilitation: Pond Reversion and Coastal Protection. In Wolanski E and McLusky DS (eds.) Treatise on Coastal and Estuarine Science Volume 10, pp. 217-244. Waltham: Academic Press (ISI)
  • Licuanan, WY, Medina, M.L.S., Luzon, K.S., Samson, M.S., Nañola, C.L., Rollon, R.N., & Roleda, M.Y. 2011. Priority Reef Areas in the Pacific Coast of the Philippines for Marine Protected Area Development. Philippine Agricultural Scientist 94(4): 384-400 (ISI)
  • de Venecia, M.B.B. & Rollon, R.N. 2011. Reducing Meadow Damage in Determining the Leaf Plastochrone Intervals (LPI) of Enhalus acoroides (L. f.) Royle and Increasing Statistical Power in Assessing Site-Scale LPI Variability. Philippine Agricultural Scientist 94(4): 375-383 (ISI)
  • Samson, M.S. & Rollon, R.N. 2011. Mangrove Revegetation Potentials of Brackish-Water Pond Areas in the Philippines, Aquaculture and the Environment: a shared destiny, Barbara Sladonja (Ed.), ISBN: 978-953-307-749-9, InTech, pp. 31-50. (ISI) Available from:
  • Samson, M.S., & Rollon, R.N. 2008. Growth performance of planted mangroves in the Philippines: Revisiting forest management strategies. Ambio 37(4): 234-240. (ISI)
  • Uy, W.H., Rollon, R.N., van Steveninck, E.D.R. 2006. Assessment of Seagrass and Seaweed Meadows and Associated Fauna in the Coastal Barangays of Northeastern Mt. Malindang. Society, Environment and Development – A compendium of papers presented in scientific conferences (SEARCA publication), pp. 158-173.
  • Uy, W.H. D.G. Bacaltos, Freire, F.F.M., Avenido, P.M., Roa, E.C., Seronay, R.A., Lacuna, D.G., Rollon, R.N., van Steveninck, E.D.R., & Coronado, R.M. 2006. A Comprehensive Analysis of the Ecological Factors for the Development of Strategies to Sustain Coastal Biodiversity and to Improve Fish Stock Management. Book/Monograph – SEARCA, 53 pp. ++
  • Bacaltos, D.G.G., Uy, W.H., Roa, E.C., Hansel, C.G., Rollon, R.N., & van Steveninck, E.D.R. 2006. From the River to the Sea: Biodiversity Assessment of the Mt. Malindang Water Systems. Society, Environment and Development – A compendium of papers presented in scientific conferences (SEARCA publication), pp. 174-193.
  • Vermaat, J.E., Rollon, R.N., Lacap, C.D.A., Billot, C., Alberto, F., Nacorda, H.M.E., Wiegman, F. & Terrados, J. 2004. Meadow fragmentation and reproductive output of the S.E. Asian seagrass Enhalus acoroides. Journal of Sea Research 52(4): 321-328. (ISI)
  • Rollon, R.N., Samson, M.S., Roleda, M.Y., Araño, K.G., Vergara, M.W.B. & Licuanan, W.Y. 2003. Estimating biomass from the cover of Gelidiella acerosa along the coasts of eastern Philippines. Botanica Marina 46(6): 497-502. (ISI)
  • Rollon, R.N., van Steveninck, E.D.R., and van Vierssen, W. 2003. Spatio-temporal variation in sexual reproduction of the tropical seagrass Enhalus acoroides (L.f.) Royle in Cape Bolinao, NW Philippines. Aquatic Botany 76(4): 339-354. (ISI)
  • Rollon, R.N., Vermaat, J.E., & Nacorda, H.M.E. 2003. Sexual reproduction in SE Asian seagrasses: the absence of a seed bank in Thalassia hemprichii. Aquatic Botany 75(2): 181- 185. (ISI)
  • Rollon, R.N., Fortes, M.D. & Cayabyab, N.M. 2003. Pag-asa Island: The seagrass meadows of hope. In: P.M. Aliño & M.C. Quibilan (eds.). The Kalayaan islands: our national heritage. Quezon City: U.P. Marine Science Insitute, pp. 48-49.
  • Lacap, C.D.A., Vermaat, J.E., Rollon, R.N. & Nacorda, H.M.E. 2002. Propagule dispersal of the S.E. Asian seagrasses Enhalus acoroides and Thalassia hemprichii. Marine Ecology Progress Series 235: 75-80. (ISI)
  • Biyo, J.T., Rollon, R.N., & Licuanan, W.Y. 2001. Vegetative and reproductive dynamics of the seagrasses,Thalassia hemprichii and Cymodocea rotundata in Guimaras Island, Central Philippines. The Philippine Scientist 38: 63-81. (ISI)
  • Rollon, R.N., Cayabyab, N.M., & Fortes, M.D. 2001. Vegetative dynamics and sexual reproduction of monospecificThalassia hemprichii meadows in the Kalayaan Island Group. Aquatic Botany 71(3): 239-246. (ISI)
  • Lacap, C.D.A., Vermaat, J.E., Rollon, R.N., Nacorda, H.M.E. & Fortes, M.D. 2000. Implications of the short seed dispersal in the seagrass Enhalus acoroides (L.f.) Royle. Biol. Mar. Medit. 7(2): 83-86.
  • Rollon, R.N., van Steveninck, E.D.R., Van Vierssen, W. & Fortes, M.D. 1999. Contrasting recolonization strategies in multi-species seagrass meadows.Marine Pollution Bulletin 37: 450-459. (ISI)
  • Brock, T.C.M., Roijackers, R.M.M., Rollon, R.N., Bransen, F. & Vanderheyden, L. 1995. Effects of nutrient loading and insecticide application on the ecology of Elodea-dominated freshwater microcosm II. Responses of macrophytes, periphyton and macroinvertebrate grazers. Arch. Hyrobiol. 134 (1): 53-74. (ISI)
  • Pamintuan, I.S., Alino, P.M., Gomez, E.D., & Rollon, R.N. 1994. Early successional patterns of invertebrates in artificial reefs established at a clear and silty areas in Bolinao, Pangasinan, Northern Philippines. Bull. Mar. Sci. 55 (2-3): 867-877. (ISI)
  • Rollon, R.N., Tiquio, J.P. & Fortes, M.D. 1992. Variability in the estimated minimum number of quadrats yielding the asymptote value of diversity in different seaweed communities. Proceedings of the 2nd RP-US Phycology Symposium/Workshop, Cebu, Philippines, pp 209-222.
  • Rollon, R.N. & Fortes, M.D. 1991. Structural affinities of seagrass communities in the Philippines. Proceedings of the International symposium on Coastal Living Resources, Manila, Philippines, pp. 333-346.
  • Rollon, R.N. & Fortes, M.D. 1990. Growth rates and production ofEnhalus acoroides (L.f.) Royle and seagrass zonation in Bolinao, Pangasinan. Proceedings of the First National Symposium on Marine Science, Bolinao, Pangasinan, pp. 17-30.