Marine Turtle Ecology and Assessment Program Staff

Marine Turtle Ecology and Assessment Program home page

Cali Turner-Tomaszewicz
Postdoctoral Researcher
Phone:
Fax:
E-mail:

Cali Turner Tomaszewicz is completing her Ph.D. in Ecology, Behavior & Evolution at the University of California San Diego’s Biology department, with Dr. Carolyn Kurle. She has worked with the Marine Turtle Ecology & Assessment Program since 2008, where she focused on the habitat use patterns of, and researchers ability to study, green turtles in the San Diego Bay in response to the gradual closure of a once-through-cooling power plant. This research was conducted as part of her Masters program in Marine Biodiversity and Conservation at the Scripps Institution of Oceanography, completed in 2009. Her current research utilizes humerus bones of dead, stranded turtles, and applies stable isotope analysis with skeletochronology to focus on life history, habitat use, and growth patterns of east Pacific green sea turtles (Chelonia mydas) and North Pacific loggerhead turtles (Caretta caretta). Specific objectives include determining the duration of the oceanic stage, or the “lost years,” of these two turtle populations, and elucidating the age of settlement to neritic foraging habitats. Further applications of these techniques include determining residency duration time in discrete oceanic and neritic habitats, age-at-maturation, age distributions of location-specific populations, and the timing and variation of ontogenetic shifts in both location and diet. Prior to joining the MTEAP, Cali earned her B.A. in Environment, Economics & Politics from Claremont McKenna College in 2001 where she focused on the sustainable management of natural resources. Post-college work experiences include management and biological consulting, and science communication and outreach for a variety of non-profit organizations in Colorado and California.

TopMore Information

Camryn Allen
NRC Post-doctoral Fellow
Phone: (858) 334-2874
Fax: (858) 546-7003
E-mail: Camryn.Allen@noaa.gov

Camryn D. Allen, Ph.D. joined the Marine Turtle Ecology and Assessment Program in 2011. In her time here, she has developed the first sea turtle endocrinology laboratory at a NMFS science center. Camryn’s endocrinology research examines the sex ratio (using testosterone to determine juvenile turtle sex) at foraging grounds for all six sea turtle species listed as endangered or threatened under the U.S. Endangered Species Act (ESA). In addition, Camryn is involved in determining pregnancy rate, maturity state, and stress response in free-ranging cetaceans using hormones extracted from biopsy blubber samples. She is also deeply involved in the ESA and International Union for Conservation of Nature (IUCN) Red List status assessments for green sea turtles which determine the global and regional status (endangered, threatened, not listed, etc.) of the green sea turtle. Camryn also lead a stable isotope study that was informative for the management of sea turtles off the U.S. West coast, which determined the migratory origin of loggerhead turtles caught by the gillnet fishery in the Southern California Bight.

TopMore Information

Jeffrey Seminoff
Program Leader, Marine Turtle Ecology & Assessment
Phone: (858) 546-7152
Fax: (858) 546-7003
E-mail: Jeffrey.Seminoff@noaa.gov

Jeffrey Seminoff is Leader of the Marine Turtle Ecology & Assessment Program and Director of the Stable Isotope Laboratory at the U.S. National Marine Fisheries Service’s Southwest Fisheries Science Center (La Jolla, California). Since 1992 Jeffrey has been involved in ecological research and conservation of sea turtles in the Pacific Ocean. He received his Ph.D. from the University of Arizona in 2000, and was a Post-doctoral Fellow at the Archie Carr Center for Sea Turtle Research at the University of Florida from 2000 to 2002. Seminoff is the Past-President of the International Sea Turtle Society and hosted the 31st International Symposium on Sea Turtle Biology and Conservation in San Diego in 2011. He is Editor of the hard-cover book 'Sea Turtles of the Eastern Pacific' (University of Arizona Press) and was team leader for the most recent green sea turtle status assessments for the IUCN Red List of Threatened Species and the U.S. Endangered Species Act. Seminoff currently serves as the U.S. Delegate for the Scientific Committee of the Inter-American Convention for the Protection and Conservation of Sea Turtle, is the Executive Editor of the professional scientific journal Chelonian Conservation and Biology, and serves as Editor for the journals Endangered Species Research and Indian Ocean Marine Turtle Newsletter. Jeffrey’s current research uses innovative approaches such as stable isotope analysis, biotelemetry, animal-borne imagery, and aerial surveys to elucidate the life history of sea turtles throughout the Pacific Ocean. His has authored over 100 peer-reviewed publications and his research has been featured in numerous popular magazines, and news outlets, as well as on the Discovery Channel, Animal Planet, PBS, and National Geographic Explorer. Jeffrey lives with his wife, Jennifer, and young children Quin and Graeson, in San Diego along with an assortment of pets including George, a 40-kg tortoise.

TopMore Information

Joel Schumacher
Research Technician
Phone: (858) 334-2837
Fax: (858) 546-7003
E-mail: Joel.Schumacher@noaa.gov

I started at SWFSC in January of 2012 after graduating from UCSD. As a volunteer for the Fisheries Resource Division's Molecular Genetics Lab, I worked on microsatellite analysis of thresher and mako sharks and helped out on research cruises. I am now a research technician for the stable isotope and chemical ecology laboratory for Marine Turtle Ecology and Assesement Program. My current research uses stable isotope analysis to aid in the management and conservation of marine turtles, as well as assisting with field work for Green Sea Turtles in San Diego Bay. I will eventually go back to school to pursue an advanced degree, but for now I'm happy to improve and enhance my skills as a scientist at a great research facility!

TopMore Information

Manjula Tiwari
Conservation Scientist
Phone: (858) 546-5658
Fax: (858) 546-7003
E-mail: Manjula.Tiwari@noaa.gov

Dr. Manjula Tiwari’s first sea turtle project in 1991 was a survey of the remote beaches of the Nicobar Islands, India. The challenges and adventures of working with sea turtles at these remote beaches with the local people set the theme for many of her future projects. In 1994, she joined the Archie Carr Center for Sea Turtle Research at the University of Florida, where she earned a Master’s Degree for her loggerhead research in Florida, Brazil and Greece, and a Ph.D. looking at density-dependent processes and green turtle hatchling production at Tortuguero, Costa Rica. With interests focused on sea turtle ecology and conservation, Manjula collaborates with sea turtle projects around the world. Her primary projects and research address a wide variety of issues ranging from nesting beach ecology to the impact of fisheries on sea turtle populations in Africa, the Middle East, the South Pacific, and Southeast Asia. Manjula is a Conservation Scientist with NOAA’s Marine Turtle Ecology and Assessment Program in La Jolla, California; the President of the US-based NGO Ocean Ecology Network; the Vice President of Chélonée, a French NGO dedicated to the research and conservation of sea turtles; the Regional Vice Chairman of the Southeast Atlantic for IUCN-Marine Turtle Specialist Group; an Advisory Committee member of the Indian Ocean Southeast Asia Memorandum of Understanding for Marine Turtles, the Founding Member and Scientific Advisor of Association pour la protection des Tortues Marines au Maroc (ATOMM) dedicated to sea turtle research and conservation in Morocco; and the Co-Chair of the South Atlantic Sea Turtle Network.

TopMore Information

Robin LeRoux
Marine Turtle Coordinator
Phone: (858) 546-5659
Fax: (858) 546-7003
E-mail: Robin.Leroux@noaa.gov

Robin LeRoux, M.B.A. is the Marine Turtle Coordinator for Southwest Fisheries Science Center, and is integral to the activities of the Marine Turtle Genetics Program and the Marine Turtle Ecology and Assessment Program. She began working with marine turtles at the SWFSC in 1998. During this time, her role has evolved from conducting research in our genetics program into program management. Her primary responsibilities include facilitating the flow of information among the two marine turtle programs and with our research partners, short and long-term program planning to meet national development plans and strategic frameworks, coordination and preparation of marine turtle research permits, and management of the program budgets. In addition to her coordinating role, she conducts research targeting genetic stock structure of hawksbill turtles in the Atlantic Ocean and fisheries by-catch in the Pacific Ocean. During her career she has had the unique opportunity to participate in various foraging and nesting beach field projects in the Caribbean and Pacific.

TopMore Information

Scott Benson
Marine Ecologist
Phone: (831) 771-4154
Fax: (831) 633-0805
E-mail: Scott.Benson@noaa.gov

Scott Benson is the lead investigator of the leatherback turtle ecology program and coordinates studies of the distribution, abundance, movement patterns, foraging ecology, and health of endangered western Pacific leatherback turtles along the U.S. West Coast and throughout the Pacific. His research integrates bio-telemetry, aerial surveys, vessel-based sampling, and satellite remote sensing to enhance understanding of how oceanographic processes influence the occurrence and behavior of this species, and to aid U.S. and international conservation and recovery efforts. Since 1986, Scott has been involved in ecological research and conservation of marine vertebrates in the Pacific Ocean, including integrated studies of marine mammals and seabirds along the U.S. West Coast. Stationed at Moss Landing Marine Laboratories, his education includes a B.A. from San Diego State University and an M.S. in Marine Science from San Jose State University.

TopMore Information

Tomo Eguchi
Ecologist
Phone: (858) 546-5615
Fax: (858) 546-7003
E-mail: Tomo.Eguchi@noaa.gov

Tomo Eguchi, Ph.D. joined the sea turtle research program at the Southwest Fisheries Science Center in March 2004. He has a wide variety of research experience and education. He received an M.S. from Moss Landing Marine Laboratories (MLML), California State University (1998), studying diving behavior, movements, food habits, and morphology of harbor seals in the Monterey Bay area. After learning field skills at MLML, he learned theoretical and analytical ecology at Montana State University in Bozeman, MT, and received a Ph.D. in ecology (2003). Along the way, he also earned an M.S. in statistics from MSU (2003). Eguchi’s dissertation was about hierarchical Bayesian analysis of mark-recapture abundance estimation, which was applied to photographic identification studies along the east coast of the US. His research interests include general ecology, conservation biology, population biology, population genetics, demography, population modeling, and statistical inference. He is also involved with quantitative analysis of movements, spatial modeling, and habitat analysis. Current projects include life-history parameter estimations for leatherback turtles, analyses of inter-nesting diving behavior and habitat use of leatherback turtles, Bayesian line-transect analyses, abundance estimations of turtles from various sources of nesting-beach survey data, development of innovative statistical analyses of archived dive data, temporal/spatial modeling of habitat, predictive modeling of interactions between protected species and fisheries, and development of quantitative management tools for marine turtles. Since joining the sea turtle program at SWFSC, he has been involved in a wide variety of field projects, including San Diego Bay and Long Beach green turtle in-water capture, Baja loggerhead turtle aerial survey, Southern California Bight loggerhead turtle aerial survey, central California leatherback turtle aerial survey, central California leatherback turtle in-water capture, St Croix leatherback turtle nesting beach studies, and the Gulf of Mexico oil spill response. He has also been involved in status review teams for loggerhead turtles, white sharks, and green turtles and an expert working group for leatherback turtles.

TopMore Information