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Lydia B. Ladah

8807 Big Bluff Avenue

Las Vegas, Nevada 89148 U.S.A.

Tel. 702-368-0355 Fax 702-368-0699



Ph. D. Coastal Oceanography (Marine Algal Ecology) – Instituto de Investigaciones Oceanológicas, Universidad Autónoma de Baja California (UABC), Ensenada, Baja California, Mexico, 2000

M. S. Biochemistry/Molecular Biology – Institute of Genetic Medicine - University of Southern California, Los Angeles, CA, U.S.A., 1993

B. A. Biochemistry – Occidental College, Los Angeles, CA, U.S.A., 1991


1. Universidade do Algarve: Algarve, Portugal - March 2001 to Oct 2001: Post-Doctoral Researcher

Post-doctoral research focused on reproductive ecology of Fucus vesiculosus and F. spiralis: comparing external fertilization success, timing of gamete release, gamete dispersal, recruitment, and post-recruitment mortality of two congeners with different reproductive strategies along a wave exposure gradient using manipulative experiments and natural populations. Laboratory work entailed evaluating amount of time for zygote adhesion, and gamete dispersal under controlled conditions. Co-authored a grant (in review) to study selection at biogeographic boundaries of marine primary producers.

2. CICESE, Dept. Ecology: Ensenada, Mexico - January 2001 to present: Associate Professor

Associate Researcher/Professor (Investigador Asociado C) – Division of Oceanology, Dept. of Ecology. Research focuses on kelp forest resources as part of the fisheries ecology group, physical-biological coupling in the kelp forest ecosystem (ENSO and global change), kelp-urchin-abalone interactions, and spore and larvae dispersal. Responsible for advising graduate students, conducting independent research, and for teaching graduate courses in marine ecology. Responsible for three main graduate classes: 1) Molecular Ecology, 2) Kelp Forest Ecology, and 3) Rocky Shore Ecology. Principal investigator of three grants: 1) "Biological-Physical Coupling in the Kelp Forests of Baja California", 2) "Molecular Ecology of Kelp Forest Resources", and 3) "Speciation in Marine Algae at their Distributional Limits".

3. Universidad Autónoma de Baja California - January 1995 to December 2000: Doctoral Student and Undergraduate Lecturer

4. Non-profit, Environmental, and Part-time work - December 1992 to December 1994

5. University of Southern California – Dept. Bioc. & Mol. Biology - August 1991 to December 1992

Professional Interests


Peer review:

Ladah, Lydia B., Zertuche-Gonzalez, J.A., and Hernandez-Carmona, G. (1999) Rapid Recovery Giant Kelp (Macrocystis pyrifera, Phaeophyceae) Recruitment near its Southern Limit in Baja California after Mass Disappearance during ENSO 1997-1998. Journal of Phycology V. 35 No. 6. 1106-1112.

Ladah. Lydia B. (2000) Life on the edge: Stress survival adaptations in southern limit M. pyrifera. Journal of Phycology V. 36 No. 3 supplement. (abstract only)

Ladah, Lydia B., Bermudez, R., Serrao, E. and Pearson, G. (2001) The effect of water motion on reproductive success of marine species with external fertilization: Monoecious reproduction as an adaptation to high wave energy in Fucus? Phycologia in press. (abstract only)

In preparation or review:

Ladah, Lydia B., Bermudez, R., Pearson, G., and Serrao, E. The absence of a dioecious fucoid (Fucus vesiculosus) from exposed coasts near its southern-limit in the Eastern Atlantic where a hermaphroditic fucoid (Fucus spiralis) occurs?

Ladah, Lydia B., Bermudez, R., Pearson, G., and Serrao, E. Timing of gamete release during the tidal cycle in Fucus spiralis and Fucus vesiculosus.

Ladah, Lydia B. and Zertuche-Gonzalez, J.A. Deep-water Macrocystis pyrifera survival in a Northern Baja California (Mexico) kelp forest during the mass disappearance of El Niño 1997-98.

Ladah, Lydia B., Durazo-Arivisu, R. and Zertuche-Gonzalez, J.A Effect of temperature-nitrate relationships along the Baja California coastline on giant kelp forest carrying capacity.

Ladah, Lydia B. and Zertuche-Gonzalez, J.A. Ecotypic adaptation of the giant kelp, Macrocystis pyrifera (Laminariales), at its southern limit of distribution in the Northern Hemisphere.

Ladah, Lydia B, and Zertuche-Gonzalez, J.A. High temperature and low nutrient stress tolerance of micrscopic stages of Macrocystis pyrifera from its southern limit compared to the center of its range in the Northern Hemisphere – seed bank formation may differ between populations.

Ladah, Lydia B. and Zertuche-Gonzalez, J.A. Development of spores, gametogenesis, and zygote production of Macrocystis pyrifera under El Niño like conditions in the laboratory.

Popular press:

Ladah, Lydia B. (1995). Kelping out Todos Santos Islands. Surfing April 1995.

Ladah, Lydia B. (1997). Bosques Debajo Del Mar: el Kelp Gigante. Mundo Marino, No. 3, Spain.

Invited Seminars

Taller de Intercalibración de Monitoreo de ENSO y Simposio de La Niña (Intercalibration of ENSO Monitoring and La Niña Symposium). Lima, Peru. Nov. 10, 2000.

"Macrocystis pyrifera as a biological indicator of ENSO impact in the Northeast Pacific"

American University of Beirut, Department of Ecology, Seminar Series. Beirut, Lebanon. May 21, 2001. (pending) "Life histories as survival strategies in brown algae"

University of Evora, Evora, Portugal. May 30, 2001. "Evolutionary advantage of some brown algal life histories" 

Conference Presentations

Western Society of Naturalists, Ventura, California, USA. Nov 9 - 12, 2001. Characteristics of the mating system and life history of marine brown algae as an evolutionary advantage in distrubed environments.

7th International Phycological Congress, Thessaloniki, Greece. Aug 18 - 25, 2001: Why is Fucus vesiculosus absent from exposed shores near its southern limit in the NE Atlantic?

Phycological Society of America, San Diego, California, U.S.A. July 15 - 19, 2000.

Oral presentation: Life on the edge: Stress survival adaptations in southern limit M. pyrifera

III Congreso Mexicano de Ficología (Third Mexican Phycological Congress) La Paz, Baja California, México. October 26 - 29, 1999. Oral Presentation: Sobrevivencia ecotípica de esporas de Macrocystis pyrifera en el límite sur de su distribución: Una población más adaptada al estrés? (Ecotypic survival of M. pyrifera spores at the southern limit of distribution: A population better adapted to stress?). Won best student paper award.

Western Society of Naturalists San Diego, California, USA. December 26 - 30, 1998

Oral Presentation: Stress tolerance of microscopic stages of Macrocystis pyrifera from Bahía Tortugas, Baja California, Mexico (southern limit).

XI Congreso Nacional de Oceanografía (Eleventh National Oceanography Congress) Ensenada, Baja California, México. April 26 - 30, 1998

Oral Presentation: Demografía de poblaciones de Macrocystis pyrifera durante 1996 y 1997 en Baja California, México. (Demography of M. pyrifera populations during 1996 and 1997 in Baja California, Mexico)

XVIth International Seaweed Symposium Cebu City, Philippines April 12 - 17, 1998

Oral Presentation: Population dynamics of giant kelp (Macrocystis pyrifera) during 1996 and 1997 in Baja California.


2000: Hoshaw Travel Award. Phycological Society of America. July 2000.

1999: Primer Lugar en el concurso estudiantil: modalidad Doctorado. III Congreso Mexicano de Ficología. (Best Student Paper, First Place, Ph.D. Student Division, Third Mexican Phycological Congress). October 1999.

1998: Student travel award. Western Society of Naturalists. December 1998.

1998: Student travel award: International Seaweed Symposium. April 1998.

Membership in Professional Societies

Sociedad Ficológica de México (Phycological Society of Mexico)

Western Society of Naturalists

Phycological Society of America

American Society of Limnology and Oceanography

Training Seminars

The Logical Design and Analysis of Experiments. Dr. Anthony Underwood and Dr. Gee Chapman, University of Sydney. Sept. 3 to 13, 2001. Sardinia, Italy.

Molecular Studies of Marine Biodiversity, Dr. Jose Lopez, Harbor Branch Oceanographic Institute, June 18 to July 2, 2000. Andros Island, Bahamas.

Ecology of Giant Kelp Forests and Management of their Fishery, Dr. Michael Foster, Moss Landing Marine Laboratories, October 7 - 9, 1996. La Paz, Baja California, Mexico.

Estrategias Reproductoras en Moluscos Bivalvos y Gasterópodos Prosobranquios (Reproductive Strategies in Bivalve Mollusks and Gastropods), Dr. Erik R. Baqueiro Cardenas, Instituto Nacional de Pesca, C.R.I.P. de Campeche, August 25 - 28, 1998. Ensenada, Baja California, Mexico.

Research Projects/Grants authored


SIMAC 970106007: "Caracterización Ecofisiológica y Genética de Poblaciones de Macrocystis pyrifera en Baja California". 8/1997 to 8/1999. (Ecophysiology and Population Genetics of Macrocystis pyrifera in Baja California) Co-PI, Direct funds: 189,600 Mexican pesos (about $21,000 US dollars)

SEGUNDA CONVOCATORIA INTERNA DE INVESTIGACION (UABC) 4078-22: "Caracterización Ecológica, Fisiológica y Genética de Poblaciones de Macrocystis pyrifera en Baja California, México". 10/1997 to 9/1998 (Ecological, Physiological, and Genetic Characterization of Macrocystis pyrifera in Baja California, Mexico) Co-PI, Direct funds: 30,000 Mexican pesos (about $3500 US dollars)

Internal Project: CICESE: Molecular ecology of kelp forest resources in Baja California. 10/2001 to 12/2001. PI. (20,000 pesos, or 2000 US dollars for the months Oct to Dec, 2001)


FCT (Portugal): "Marine primary producers at their southern limit in biogeographic transition zones: strategies for survival under strong selective pressure". Collaborator, Direct Funds: $237,100 US dollars (47,420 Portuguese contos or 47,420,000 Escudos)

CONACYT (Mexico): "AMELIS: Algas Marinas en su limite sur bajo fuerte presión selectiva". PI, Direct Funds: 1,879,000 Mexican pesos (about 200,000 US dollars)

Internal Project: CICESE: (2002 continuation): Molecular ecology of kelp forest resources in Baja California. PI. (60,000 pesos, or 6000 US dollars for 2002)

 Teaching Experience

Personal Information

Birthdate: June 27, 1970 - U.S. Citizen

Languages: English, Spanish, Arabic, French (50%)

Computer Skills: All word processors, data and spreadsheet programs, thermograph and ambient monitoring programs, statistical analyses programs, microscope digital camera, microscope photo analyses and some HTML training.

Other Activities

Certified Scuba Diver (SCUBA-NAUI), Competitive Triathlete and Surfer