Maria Helena T. Yap, Dr. rer. nat. - Professor

Selected Publications:

Atrigenio, M.P., C. Conaco, C. Guzman, H.T. Yap, and P.M. Aliño. Distribution and abundance of Heliopora coerulea (Cnidaria: Coenothecalia) and notes on its aggressive behavior against scleractinian corals: Temperature mediated? Regional Studies in Marine Science, https://doi.org/10.1016/j.rsma.2020.101502.
Labao, A.B., P.C. Naval Jr., D.L.T. Yap, and H.T. Yap. Using deep-belief networks to understand propensity for livelihood change in a rural coastal community to further conservation. Conservation Biology 34: 1008-1016. doi:10.1111/cobi.13497.
Dingkuhn, E.L., A. Wezel, F.J.J.A. Bianchi, J.C.J. Groot, A. Wagner, H.T. Yap, and R.P.O. Schulte. A multi-method approach for the integrative assessment of soil functions: application on a coastal mountainous site of the Philippines. Journal of Environmental Management, doi.org/10.1016/j.jenvman.2020.110461
Yap, H.T. One-ecosystem analysis for environmental conservation and sustainable livelihood [version 1; peer review: 2 approved] F1000Research 2019, 8(F1000 Faculty Rev):328 (https://doi.org/10.12688/f1000research.13999.1).
Servonnat, M., R. Kaye, F.P. Siringan, J. Munar, and H.T. Yap. Imperatives for conservation in a threatened center of biodiversity. Coastal Management, DOI: 10.1080/08920753.2019.1641040.
Baria-Rodriguez, M.V., D.W. dela Cruz, R.M. Dizon, H.T. Yap, and R.D. Villanueva. Performance and cost-effectiveness of sexually produced Acropora granulosa juveniles compared with asexually generated coral fragments in restoring degraded reef areas. Aquatic Conservation: Marine and Freshwater Ecosystems, DOI: 10.1002/aqc.3132.
Azcuna, M., J. O. Tun, H. T. Yap, and G. P. Concepcion. Callyspongia samarensis (Porifera) extracts exhibit anticancer activity and induce bleaching in Porites cylindrica (Scleractinia). Chemistry and Ecology, DOI: 10.1080/02757540.2018.1437148.
Labao, A.B., P.C. Naval, Jr., D.L.T. Yap, and H.T. Yap. Influencing rural livelihood switching through equipment assets for agroecosystems to alleviate pressure on resources. Agriculture, Ecosystems and Environment 248: 96-104.
Benjamin, C.S., A.T. Punongbayan, D.W. dela Cruz, R.D. Villanueva, M.V.B. Baria and H.T. Yap. Use of Bayesian analysis with individual-based modeling to project outcomes of coral restoration. Restoration Ecology, doi: 10.1111/rec.12395.
de la Cruz D.W., B. Rinkevich, E.D. Gomez and H.T. Yap. Assessing an abridged nursery phase for slow growing corals used in coral restoration. Ecological Engineering 84: 408-415.
Wagner, A., D.L.T. YAP and H.T. Yap. Drivers and consequences of land use patterns in a developing country rural community. Agriculture, Ecosystems and Environment 214: 78-85.
Cabaitan, P.C., E.D. Gomez and H.T. Yap. The spaghetti sponge Callyspongia samarensis (Wilson, 1925) provides temporary habitat for reef fish recruits. Marine Biodiversity, doi: 10.1007/s12526-015-0410-0.
Cabaitan, P.C., H.T. Yap, and E.D. Gomez. Performance of single versus mixed coral species for transplantation to restore degraded reefs. Restoration Ecology 23: 349-356.
Yap, H.T., D.M.L. Espita, M.N.E. Montaño, C.S. Benjamin and E.D. Gomez. Biochemical comparison of bleaching and non-bleaching Montipora digitata (Order Scleractinia) in the Philippines. Philippine Science Letters 7: 293-299.
Yap, H.T. Typhoon Haiyan in the Philippines: pushing the envelope. Philippine Science Letters 6: 204-205 (Editorial).
Gomez, E.D., P.C. Cabaitan, H.T. Yap and R.M. Dizon. Can coral cover be restored in the absence of natural recruitment and reef recovery? Restoration Ecology doi: 10.1111/rec.12041.
Yap, Helen T. Coral reef ecosystems. In Meyers RA (ed), Encyclopedia of Sustainability Science and Technology, pp 2489-2509, Springer, New York/Heidelberg
Yap, Helen T. Climate change and disaster science in the Philippine setting. Philippine Science Letters 5: 53-54 (Editorial).
Yap, Helen T. A perilous future for coral reefs. Conservation Biology 25: 205-206 (Book review).
Yap, Helen T., Reverie Alvarez-Molina and Caryl S. Benjamin. Factors promoting coral-algal transition in coral transplantation experiments. Philippine Science Letters 4: 60-69.
Gomez, E.D., H.T. Yap, P. C. Cabaitan and R.M. Dizon. Successful transplantation of a fragmenting coral, Montipora digitata, for reef rehabilitation. Coastal Management 39: 556-574.
Villanueva, R.D., H.T. Yap, and N.M.E. Montaño. Reproductive effects of the water-accommodated fraction of a natural gas condensate in the Indo-Pacific reef-building coral Pocillopora damicornis. Ecotoxicology and Environmental Safety 74: 2268-2274.
Yap, Helen T. Disaster after disaster. Mar. Pollut. Bull. 60: 153-154 (Editorial).
Malone, T., M. Davidson, P. DiGiacomo, E. Gonçalves, T. Knap, J. Muelbert, J. Parslow, N. Sweijd, T. Yanagi and H. Yap. Climate change, sustainable development and coastal ocean information needs. Procedia Environmental Sciences 1: 324-341.
Yap, Helen T. Local changes in community diversity following coral transplantation. Mar. Ecol. Progr. Ser. 374: 33-41
Montebon, A.R.F. and Helen T. Yap. Abundance, density and size structure of Spirobranchus gaymardi (Polychaeta, Serpulidae) in Philippine coral reefs. Bull. Mar. Sci. 84: 93-108.
Palomar, M.J.S., H.T. Yap and E.D. Gomez. Coral transplant survival over 3 years under different environmental conditions at the Hundred Islands, Philippines. Philipp. Agric. Scientist 92:143-152.
Villanueva, R.D., H.T. Yap and M.N.E. Montaño. Timing of planulation by pocilloporid corals in the northwestern Philippines. Mar. Ecol. Progr. Ser. 370: 111-119.
Villanueva, R.D., M.N.E. Montaño and H.T. Yap. Effects of natural gas condensate-water accommodated fraction on coral larvae. Mar. Pollut. Bull. 56: 1422-1428.
Yap, Helen T. Coral reef resilience. Mar. Pollut. Bull. 54: 1075-1076 (Editorial).
Norström, A.V., J. Lokrantz, M. Nyström and H.T. Yap. Influence of dead coral substrate morphology on patterns of juvenile coral distribution. Mar. Biol. 150: 1145-1152.
Yap, Helen T. Corruption begets pollution. Mar. Pollut. Bull. 52: 1121-1122 (Editorial).
Dizon, R.M. and H.T. Yap. Effects of multiple perturbations on the survivorship of fragments of three coral species. Mar. Pollut. Bull. 52: 928-934.
Villanueva, R.D., H.T. Yap and M.N.E. Montaño. Intensive fish farming in the Philippines is detrimental to the reef-building coral Pocillopora damicornis. Marine Ecol. Prog. Ser. 316:165-174
Dizon, Raymond T. and H.T. Yap. Understanding coral reefs as complex systems: degradation and prospects for recovery. Sci. Mar. 70: 219-226.
Dizon, R.M. and H.T. Yap. Coral responses in single- and mixed-species plots to nutrient disturbance. Mar. Ecol. Prog. Ser. 296: 165-172.
Dizon, Raymond T. and H.T. Yap. Effects of coral transplantation in sites of varying distances and environmental conditions. Mar. Biol. DOI 10.1007/s00227-005-0142-y.
Villanueva, R.D., H.T. Yap and M.N.E. Montaño. Survivorship of coral juveniles in a fish farm environment. Mar. Pollut. Bull. 51: 580-589.
Yap, Helen T. Differential survival of coral transplants on various substrates under elevated water temperatures. Mar. Pollut. Bull. 49: 306-312.
Sabater, M.G. and H.T. Yap. Long-term effects of induced mineral accretion on growth, survival and corallite properties of Porites cylindrica Dana. J. Exp. Mar. Biol. Ecol. 311: 355-374.
Yap, Helen T. Coral reef “restoration” and coral transplantation. Mar. Pollut. Bull. 46: 529 (Editorial).
Yap, Helen T. and Reverie Alvarez Molina. Comparison of coral growth and survival under enclosed, semi-natural conditions and in the field. Mar. Pollut. Bull. 46: 858-864.
Dizon, R.M. and H.T. Yap. Metabolic changes and compositional shifts in nutrient-enriched tropical reef sediment communities. Scientia Marina 67: 117-127.
Sabater, M.G. and H.T. Yap. Growth and survival of coral transplants with and without electrochemical deposition of CaCO3. J. Exp. Mar. Biol. Ecol. 272: 131-146.
Yap, Helen T. Another look at coral reef degradation. Mar. Pollut. Bull. 42: 527 (Editorial).
AYap, H.T. A good word on marine reserves, though probably not the last. Mar. Pollut. Bull. 42: 1421-1422 (Book review).
Reyes, M.Z. and H.T. Yap. Effect of artificial substratum material and resident adults on coral settlement patterns at Danjugan Island, Philippines. Bull. Mar. Sci. 69: 559-566.
Dy, D.T. and H.T. Yap. Surge ammonium uptake of the cultured seaweed, Kappaphycus alvarezii (Doty) Doty (Rhodophyta: Gigartinales). J. Exp. Mar. Biol. Ecol. 265: 89-100.
Yap, H.T. The case for restoration of tropical coastal ecosystems. Ocean & Coastal Management 43: 841-851.
Dy, D.T. and H.T. Yap. Ammonium and phosphate excretion in three common echinoderms from Philippine coral reefs. J. Exp. Mar. Biol. Ecol. 251: 227-238.
Yap, H.T. Sustainable use of coral reef resources: an attainable goal? Asian Journal of Tropical Biology 3:1-8.
Dizon, R.M. and H.T. Yap. Short-term responses of coral reef microphytobenthic communities to inorganic nutrient loading. Limnol. Oceanogr. 44: 1259-1267.
Yap, H.T., R.M. Alvarez, H.M. Custodio III and R.M. Dizon. Physiological and ecological aspects of coral transplantation. J. Exp. Mar. Biol. Ecol. 229: 69-84.
Yap, H.T., H.M.E. Nacorda and G.S. Jacinto. Community structure and distribution of soft bottom fauna at various distances from two geothermal discharge sites in the eastern Philippines. Asian Journal of Tropical Biology 2: 9-21
Custodio, H.M. III and H.T. Yap. Skeletal extension rates of Porites cylindrica and Porites (Synaraea) rus after transplantation to two depths. Coral Reefs 16: 267-268.
Nacorda, H.M.E. and Helen T. Yap. Structure and temporal dynamics of macroinfaunal communities of a sandy reef flat in the northwestern Philippines. Hydrobiologia 353: 91-106.
Tumanda, M.I., Jr., Helen T. Yap, L. McManus, J.A. Ingles and M.G. Lopez. Growth, mortality and recruitment pattern of the brown mussel, Modiolus metcalfei (Bivalvia: Mytilacea), in Panguil Bay, southern Philippines. Aquaculture 154: 233-245.
Yap, Helen T. Attempts at integrated coastal management in a developing country. Mar. Pollut. Bull. 32: 588-591
Nacorda, H.M.E. and H.T. Yap. Macroinfaunal biomass and energy flow in a shallow reef flat of the northwestern Philippines. Hydrobiologia 341: 37-49.
Yap, H.T., A.R.F. Montebon, J.-A. von Oertzen and R.M. Dizon. Experimental manipulations of a solitary coral (Fungia, Scleractinia) with emphasis on the effects of light. Bull. Mar. Sci. 56: 319-329.
Montebon, A.R.F. and H.T. Yap. Metabolic responses of the scleractinian coral Porites cylindrica Dana to water motion. I. Oxygen flux studies. J. Exp. Mar. Biol. Ecol. 186: 33-52.
Montebon, A.R.F. and H.T. Yap. A device to enable multi-replicate measurements in dissolved oxygen respirometry. Coral Reefs 14: 54
Yap, H.T., A.R.F. Montebon and R.M. Dizon. Energy flow and seasonality in a tropical coral reef flat. Mar. Ecol. Prog. Ser. 103: 35-43.
Gomez, E.D., P.M. Aliño, H.T. Yap and W.Y. Licuanan. A review of the status of Philippine reefs. Mar. Pollut. Bull. 29: 62-68.
Yap, H.T. National activities in the Philippines that may contribute to JGOFS. Bulletin of Marine Science and Technology (R.O.C.) No. 12: 61-63
Yap, H.T. Marine environmental problems: experiences of developing regions. Mar. Pollut. Bull. 25: 37-40.
Yap, H.T., P.M. Aliño and E.D. Gomez. Trends in growth and mortality of three coral species (Anthozoa: Scleractinia), including effects of transplantation. Mar. Ecol. Prog. Ser. 83: 91101.
Yap, H.T. Benthic energy dynamics in a southern Baltic ecosystem. Mar. Biol. 108: 477484.
Yap, H.T., J.A. von Oertzen and U. Schiewer. Effects of turbidity caused by nutrient loading on benthic dynamics. Continental Shelf Research 7: 14391444.
Alcala, A.C., E.D. Gomez and H.T. Yap. Philippine coral reefs: status and human responses to changes. Resource Management and Optimization 4 (34): 297340.
Yap, H.T. Bioindication in coral reef ecosystems. Acta Biologica Hungarica 37: 5558.
Yap, H.T. and E.D. Gomez. Growth of Acropora pulchra: III. Preliminary observations on the effects of transplantation and sediment on the growth and survival of transplants. Mar. Biol. 87: 203209.
Yap, H.T. and E.D. Gomez. Growth of Acropora pulchra: II. Responses of natural and transplanted colonies to temperature and day length. Mar. Biol. 81: 209215.
Yap, Helen T. Global monitoring of coral reefs. In J. Hall, D.E. Harrison and D. Stammer (eds.). Proceedings of the OceanObs’09 Conference, Venice, Italy, 21-25 September 2009, vol. 1, pp. 257-267. ESA Publication WPP-306. European Space Agency.
Montebon, A.R.F. and H.T. Yap. Metabolic responses of the scleractinian coral Porites cylindrica Dana to water motion. II. Growth studies. Proc. 8th Int. Coral Reef Symp. 2: 1065-1069.
Dizon, R.M. and H.T. Yap. Responses of benthic microalgal communities to elevated nitrogen and phosphorus levels: preliminary results. Proc. 2nd Scientific Symp. Association of Southeast Asian Marine Scientists (ASEAMS). RCU/EAS Technical Reports Series No. 10, pp. 57-64. Bangkok: United Nations Environment Programme.
Dizon, R.M., H.T. Yap and A.R.F. Montebon. Temporal stability in function of tropical reef flat sand communities. In S. Sudara, C.R. Wilkinson and L.M. Chou (eds.). Proc. 3rd ASEAN-Australia Symposium on Living Coastal Resources, Chulalongkorn University, Bangkok, Vol. 2: 211-214.
Gomez, E.D., P.M. Aliño, W.R.Y. Licuanan and H.T. Yap. Status report on coral reefs of the Philippines 1994. In C.R. Wilkinson, S. Sudara and L.M. Chou (eds.). Proc. 3rd ASEAN-Australia Symposium on Living Coastal Resources, Chulalongkorn University, Bangkok, Vol. 1: 57-76.
Montebon, A.R.F., H.T. Yap and R.M. Dizon. Growth rates of bleached and unbleached specimens of Porites cylindrica Dana acclimated under still and turbulent water motion conditions. In S. Sudara, C.R. Wilkinson and L.M. Chou (eds.). Proc. 3rd ASEAN-Australia Symposium on Living Coastal Resources, Chulalongkorn University, Bangkok, Vol. 2: 163-167.
Nacorda, H.M.E. and H.T. Yap. Sediment community metabolism and macroinfaunal structure in a tropical sandy reef flat. In S. Sudara, C.R. Wilkinson and L.M. Chou (eds.). Proc. 3rd ASEAN-Australia Symposium on Living Coastal Resources, Chulalongkorn University, Bangkok, Vol. 2: 197-202.
ANacorda, H.M.E., H.T. Yap, R.M. Alvarez, J. Oñate-Pacalioga and J. Estacion. Variations in the structure of sediment communities in selected Philippine sites. In C.R. Wilkinson, S. Sudara and L.M. Chou (eds.). Proc. 3rd ASEAN-Australia Symposium on Living Coastal Resources, Chulalongkorn University, Bangkok, Vol. 1: 347-363.
Yap, H.T. and H.M.E. Nacorda. Some aspects of the ecology of sediment fauna in Balingasay, Bolinao, Pangasinan (northern Philippines). In B. Morton (ed.). Proc. 1st International Conference on the Marine Biology of Hong Kong and the South China Sea, Hong Kong, 28 October3 November 1990, pp. 509-519. Hong Kong: Hong Kong University Press.
Montebon, A.R.F. and H.T. Yap. Photosynthesisirradiance responses of Porites cylindrica acclimated under two water motion regimes. In Chou, L.M. and C.R. Wilkinson (eds.). Third ASEAN Science and Technology Week Conference Proceedings, Vol. 6, Marine Science: Living Coastal Resources, 2123 September 1992, Singapore, pp. 3133. Singapore: Department of Zoology, National University of Singapore and National Science and Technology Board.
Nacorda, H.M.E. and H.T. Yap. Preliminary overview of structure and distribution of sediment communities in Southeast Asia. In Chou, L.M. and C.R. Wilkinson (eds.). Third ASEAN Science and Technology Week Conference Proceedings, Vol. 6, Marine Science: Living Coastal Resources, 2123 September 1992, Singapore, pp. 171174. Singapore: Department of Zoology, National University of Singapore and National Science and Technology Board.
Yap, H.T., B.H.R. Viloria and H.M.E. Nacorda. Comparison of soft bottom community profiles in two Philippine nearshore sites. In A.C. Alcala (ed.), “Living Resources in Coastal Areas”, Proceedings of the First Regional Symposium, Manila, 30 January1 February 1989, pp. 261277. Quezon City: Marine Science Institute.
Hilomen, V.V. and H.T. Yap. Preliminary analysis of trends in individual abundance and species richness of the families Pomacentridae and Labridae in Puerto Galera, Oriental Mindoro, Philippines. In A.C. Alcala (ed.), “Living Resources in Coastal Areas”, Proceedings of the First Regional Symposium, Manila, 30 January1 February 1989, pp. 141149. Quezon City: Marine Science Institute.
Yap, H.T., W.Y. Licuanan and E.D. Gomez. Studies on coral reef recovery and coral transplantation in the northern Philippines: aspects relevant to management and conservation. In Southeast Asian Marine Science and Environmental Protection. Proceedings of the First Symposium of the Association of Southeast Asian Marine Scientists, Quezon City, 7 February 1989. UNEP Regional Seas Reports and Studies No. 116: 117127.
Yap, H.T. and E.D. Gomez. Aspects of benthic recruitment on a northern Philippine reef. Proc. 6th Int. Coral Reef Symp. 2: 279283.
Yap, H.T. and J.A. von Oertzen. Benthic dynamics of an estuarine ecosystem on the Baltic coast of the GDR. Proc. 21st European Marine Biology Symposium, Gdansk, Poland, 1419 September 1986, pp. 491497. Warsaw: Polish Academy of Sciences.
Gomez, E.D. and H.T. Yap. Evolving an international system of coral reef monitoring. Proceedings of the First International Symposium on Integrated Global Ocean Monitoring, Tallin, USSR, 210 October 1983, Vol. 2: 1730.
Aliño, P.M., P.V. Banzon, H.T. Yap, E.D. Gomez, J.T. Morales and R.T. Bayoneto. Recovery and recolonization on a damaged backreef area at Cangaluyan Is. (Northern Philippines). Proc. 5th Int. Coral Reef Congress, Tahiti 4: 279284.
AGomez, E.D., A.C. Alcala, H.T. Yap, L.C. Alcala and P.M. Aliño. Growth studies of commercially important scleractinians. Proc. 5th Int. Coral Reef Congress, Tahiti 6: 199204.
Yap, H.T. and E.D. Gomez. Growth of Acropora pulchra (Brook) in Bolinao, Pangasinan, Philippines. Proc. 4th Int. Coral Reef Symp. 2: 207213.
Alcala, A.C., E.D. Gomez, L.C. Alcala, M.E. Cowan and H.T. Yap. Growth of certain corals, molluscs and fish in artificial reefs in the Philippines. Proc. 4th Int. Coral Reef Symp. 2: 215220
Yap, Helen T. The application of science and technology in marine environmental management. In Chua Thia-Eng and N. Bermas (eds.). Challenges and Opportunities in Managing Pollution in the East Asian Asian Seas. MPP-EAS Conference Proceedings 12/PEMSEA Conference Proceedings 1, 567 p. GEF/UNDP/IMO Regional Programme for the Prevention and Management of Marine Pollution in the East Asian Seas (MPP-EAS)/Partnerships in Environmental Management for the Seas of East Asia (PEMSEA), Quezon City, Philippines
Yap, Helen T. Coral reefs in the Philippines. Makai (University of Hawaii Sea Grant College Program) 19 (4): 1 and 3.
Yap, Helen T. Assessment of the present health of coral reefs in the Philippines. In R.W. Grigg and C. Birkeland (eds.). Status of Coral Reefs in the Pacific, pp. 113-119. Hawaii: University of Hawaii Sea Grant College Program.
Yap, H.T. (contributing author) in GESAMP (IMO/FAO/UNESCO/WMO/WHO/IAEA/UN/UNEP Joint Group of Experts on the Scientific Aspects of Marine environmental Protection). The contributions of science to integrated coastal management. GESAMP Reports and Studies No. 61. Rome: Food and Agriculture Organization of the United Nations, 66 p.
Yap, H.T. Soft-bottom benthic communities: structure, function and ecological importance. In L.M. Chou (ed.). Proceedings of the Workshop on Soft-Bottom Benthic Communities as Indicators of Pollutant-Induced Changes in the Marine Environment. RCU/EAS Technical Reports Series No. 7, pp. 23-26. Bangkok: United Nations Environment Programme.
Yap, H.T. Bioindicators: species and communities. In L.M. Chou (ed.). Proceedings of the Workshop on Soft-Bottom Benthic Communities as Indicators of Pollutant-Induced Changes in the Marine Environment. RCU/EAS Technical Reports Series No. 7, pp. 27-29. Bangkok: United Nations Environment Programme.
Yap, H.T. Surveying soft-bottom benthic communities: designing a sampling and monitoring programme. In L.M. Chou (ed.). Proceedings of the Workshop on Soft-Bottom Benthic Communities as Indicators of Pollutant-Induced Changes in the Marine Environment. RCU/EAS Technical Reports Series No. 7, pp. 35-39. Bangkok: United Nations Environment Programme.
Yap, H.T. and S.S.L. Lim. Application of results in management decisions. In L.M. Chou (ed.). Proceedings of the Workshop on Soft-Bottom Benthic Communities as Indicators of Pollutant-Induced Changes in the Marine Environment. RCU/EAS Technical Reports Series No. 7, pp. 69-71. Bangkok: United Nations Environment Programme.
Yap, H.T. (contributing author) in GESAMP (IMO/FAO/UNESCO/WMO/WHO/IAEA/UN/UNEP Joint Group of Experts on the Scientific Aspects of Marine environmental Protection). Biological indicators and their use in the measurement of the condition of the marine environment. GESAMP Reports and Studies No. 55. Nairobi: United Nations Environment Programme, 56 p.
Yap, H.T. (contributing author) in Chapter 6. Biodiversity and ecosystem functioning: ecosystem analyses, pp. 326-352. In Heywood, V.H. (ed.). Global Biodiversity Assessment. Cambridge: University Press.
Yap, H.T. Implications of expected climatic changes on natural coastal ecosystems in the East Asian Seas region. In L.M. Chou (ed.). Implications of Expected Climate Changes in the East Asian Seas Region: an Overview, pp. 105-122. RCU/EAS Technical Reports Series No. 2. Bangkok: UNEP.
Yap, H.T. Temperature and carbon dioxide changes over the last century in the Philippines: a basis for predicting effects of future climatic change on hermatypic corals (a case study based on the work of J. Pätzold, 1986). In L.M. Chou (ed.). Implications of Expected Climate Changes in the East Asian Seas Region: an Overview, pp. 123-127. RCU/EAS Technical Reports Series No. 2. Bangkok: UNEP.
Yap, H.T. Interregional cooperation in integrated coastal ecosystem monitoring. In Coastal Resources and Systems of the Pacific Basin: Investigation and Steps Toward Protective Management. UNEP Regional Seas Reports and Studies No. 147: 195-202.
Yap, H.T. Measurements of energy flow in sediment and coral reef ecosystems. In L.M. Chou and C. Wilkinson (eds.). Report Number 3: Workshop on Energy Transfer and Nutrient Fluxes, Singapore, 19 February 1991, pp. 23-34. ASEAN-Australia Marine Science Project: Living Coastal Resources. Singapore: Department of Zoology, National University of Singapore
Chou, L.M. and H.T. Yap. The implications of expected climatic change and sealevel rise on the coastal and marine environment of the East Asian Seas region. In Regional Cooperation on Environmental Protection of the Marine and Coastal Areas of the Pacific Basin. UNEP Regional Seas Reports and Studies No. 134: 163166.
Yap, H.T. Aspects of coral reef ecological research in the Philippines. LAUT III (3): 610.
Gomez, E.D., A.C. Alcala and H.T. Yap. Other fishing methods destructive to coral. In B. Salvat (ed.). Human Impacts on Coral Reefs: Facts and Recommendations, pp. 6775. French Polynesia: Antenne Museum E.P.H.E.
Yap, H.T. and E.D. Gomez. Coral reef degradation and pollution in the East Asian Seas region. In A.L. Dahl and J. CarewReid (eds.). Environment and Resources in the Pacific. UNEP Regional Seas Reports and Studies No. 69: 185207.
Gomez, E.D. and H.T. Yap. Coral reefs in the Pacific their potentials and their limitations. In A.L. Dahl and J. CarewReid (eds.). Environment and Resources in the Pacific. UNEP Regional Seas Reports and Studies No. 69: 89106.
Gomez, E.D. and H.T. Yap. Monitoring reef conditions. In R.A. Kenchington and B.E.T. Hudson (eds.). Coral Reef Management Handbook, pp. 171178. Jakarta: Unesco/ROSTSEA.
Yap, H.T., R.M. Dizon and A.R.F. Montebon. Metabolism of a northwestern Philippine coral reef flat measured at two spatial scales. Philipp. J. Sci. 128: 211-223.
Yap, H.T. Is there a role for U.P. scientists in the new millenium? Diliman Review 47: 43-45.

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Maria Helena T. Yap, Dr. rer. nat. – Professor