Maria Helena T. Yap

Email: htyap@

Office: Room 260
Phone: (632) 981-8500 Local 2911;
(632) 922-3921


Doctor rerum naturalium Marine Biology, University of Rostock, German Democratic Republic
M.Sc. Marine Biology,  University of the Philippines, Diliman
B.Sc. Marine Biology (magna cum laude), University of the Philippines, Diliman

Research Interests

Coral reef ecology, Complex systems

Selected Publications

(In press) Yap, Helen T. Coral reef ecosystems. Encyclopedia of Sustainability Science and Technology. Springer.

2011 Yap, Helen T. A perilous future for coral reefs. Conservation Biology 25: 205-206 (Book review).

2011 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.

2011 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.

2011 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.

2010 Yap, Helen T. Disaster after disaster. Mar. Pollut. Bull. 60: 153-154 (Editorial).

2010 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.

2009 Yap, Helen T. Local changes in community diversity following coral transplantation. Mar. Ecol. Progr. Ser. 374: 33-41.

2009 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.

2009 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.

2008 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.

2008 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.

2007 Yap, Helen T. Coral reef resilience. Mar. Pollut. Bull. 54: 1075-1076 (Editorial).

2007 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.

2006 Yap, Helen T. Corruption begets pollution. Mar. Pollut. Bull. 52: 1121-1122 (Editorial).

2006 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.

2006 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.

2006 Dizon, Raymond T. and H.T. Yap. Understanding coral reefs as complex systems: degradation and prospects for recovery. Sci. Mar. 70: 219-226.

2005 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.

2005 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.

2005 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.


PhD Graduates

Romeo M. Dizon
Danilo T. Dy
A. Rex F. Montebon
Marcelino I. Tumanda, Jr.
Ronald D. Villanueva

MSc Graduates

Dexter W. dela Cruz
Romeo M. Dizon
Vincent V. Hilomen
Wilfredo Roehl Y. Licuanan
A. Rex F. Montebon
Hildie Maria E. Nacorda
Mike Joshua S. Palomar
Marlowe G. Sabater
Martha Michelle Z. Reyes


Caryl S. Benjamin, PhD candidate
Andalus T. Punongbayan, PhD candidate
Martha Michelle Z. Reyes, PhD candidate
Patrice Bianca Roa, MSc candidate


Biological Oceanography
Marine Ecology
Marine Ecosystem Dynamics

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