Lorrie Rea

  • Research Professor
  • Marine Ecotoxicology and Trophic Assessment Laboratory (METAL)
  • University of Alaska Fairbanks
  • PO Box 755860
  • Fairbanks, AK 99775-5860
  • Phone: (907) 474-7572
  • Fax: (907) 474-7041
  • Office: 454 Duckering
  • ldrea@alaska.edu
  • CV
Research
Education
Professional Affiliations
Publications

Research Interest

Our research currently focuses with our collaborators on mercury concentrations and stable isotope signatures in seals and sea lions and their prey to help understand how heavy metals move within ecosystems and how they may impact conservation of piscivorous marine mammal species. We also focus on assessment of diet composition using stable isotopes, body condition and general health assessment of marine wildlife, and adaptive biochemistry and metabolism in fasting marine mammals.

Current Research Award

Identifying the level and prevalence of mercury and organochlorine contamination in the endangered western Steller sea lion population to assess potential links between continued declines and anthropogenic contaminant sources

L. Rea and M. Rehberg. $1,385,410 plus $527,810 matching funds from State of Alaska. NOAA Species Recovery Grant to Alaska Department of Fish and Game, July 2013 – June 2016.

  • 1995 Doctor of Philosophy, University of Alaska, Fairbanks, Alaska
    Dissertation title: Prolonged fasting in Pinnipeds. Chair: Dr. Michael A. Castellini
  • 1990 Master’s of Science, University of California, Santa Cruz, California.
    Thesis title: Changes in resting metabolic rate during long-term fasting in
    northern elephant seal pups (Mirounga angustirostris). Chair: Dr. Daniel P. Costa
  • 1987 Bachelor of Science (Honors Marine Biology), University of Guelph, Guelph,
    Ontario, Canada.
  • Research Associate Professor, Institute of Northern Engineering, University of Alaska Fairbanks, Fairbanks, AK 99775 (Sept 2013 to present)
  • Wildlife Physiologist III (previously Program Leader, Wildlife Biologist IV and Wildlife Biologist III), Steller Sea Lion Research Program, Marine Mammals Section, Division of Wildlife Conservation, Alaska Department of Fish and Game, Fairbanks, AK 99701 (August 2000 to Sept 2013)

Refereed Publications

Beck, C.A., L.D. Rea, S.J. Iverson, J.M. Kennish, K.W. Pitcher, and B. Fadely. 2007. Blubber fatty acid profiles reveal regional, seasonal, age-class and sex differences in the diet of young Steller sea lions in Alaska. Marine Ecology Progress Series 338:269-280.

Rea, L.D., D.A.S. Rosen and A. Trites. 2007. Utilization of stored energy reserves during fasting varies by age and season in Steller sea lions. Canadian Journal of Zoology. 85:190-200.

Stegall, V., S. Farley, L.D. Rea, K.W. Pitcher, R. Rye, C. Kester, and C. Bern. 2008. Carbon and nitrogen stable isotope fractionation of Alaska Steller sea lion (Eumetopias jubatus) milk, serum and vibrissae. Canadian Journal of Zoology 86(1):17-23.

Trillmich, F., L.D. Rea, M.A. Castellini, and J.B.W. Wolf. 2008. Age-related changes in hematocrit in the Galapagos sea lion (Zalophus wollebaeki) and the Weddell seal (Leptonychotes weddellii). Marine Mammal Science  24(2):303-314 (DOI:10.1111/j.1748-7692.2007.00177.x).

Rea, L.D., M. Berman-Kowalewski, D.A.S. Rosen and A. Trites. 2009. Seasonal differences in biochemical adaptation to fasting in juvenile and subadult Steller sea lions (Eumetopias jubatus). Physiological and Biochemical Zoology 82(3):236-247.

Noren, D.P., L.D. Rea and T. Loughlin. 2009.  A model to predict fasting capabilities and utilization of body energy stores in weaned Steller sea lions (Eumetopias jubatus) during periods of reduced prey availability. Canadian Journal of Zoology 87:852-864.

Castellini, J.M., L.D. Rea, C.L. Lieske, K.B. Beckmen B.S. Fadely, J.M. Maniscalco and T.M. O’Hara. 2012. Mercury concentrations in hair from neonatal and juvenile Steller sea lions (Eumetopias jubatus): implications based on age and region in this North Pacific marine sentinel piscivores. EcoHealth 9(3): 267-277. DOI:10.1007/s10393-012-0784-4.

Rea, L.D., J.M. Castellini, L. Correa, B.S. Fadely, T.M. O’Hara. 2013. Maternal Steller sea lion diets elevate fetal mercury concentrations in area of population decline. Science of the Total Environment 454-455: 277-282.

Hoopes, L.A., L.D. Rea, A. Christ and G.A.J. Worthy. 2014. No evidence of metabolic depression in western Alaskan juvenile Steller sea lions (Eumetopias jubatus). PLoS ONE 9(1): e85339. doi:10.1371/journal.pone.0085339

Lander, M.E., B.S. Fadely, T.S. Gelatt, L.D. Rea and T.R. Loughlin. 2014. Serum chemistry reference ranges for Steller sea lion (Eumetopias jubatus) pups from Alaska: Stock differentiation and comparisons within a North Pacific sentinel species. EcoHealth. DOI: 10.1007/s10393-013-0891-x

Correa, L., L.D. Rea, R. Bentzen and T.M. O’Hara. 2014. Assessment of mercury and selenium tissular concentrations and total mercury body burden in 6 Steller sea lion pups from the Aleutian Islands. Marine Pollution Bulletin.

Recent Conference Presentations

Rea L.D., J.M. Castellini, L. Correa, B.S. Fadely and T.M. O’Hara. 2012. Using chemical feeding ecology to understand variability in mercury concentrations in western Aleutian Steller sea lions. 8th International Conference on Applications of Stable Isotope Techniques to Ecological Studies. Brest, France. 20-24 August, 2012.

Scherer, R.D., L.D. Rea, A.M. Christ, M. Wunder and C.A. Stricker. 2012. Spatial variation in the diets of female Steller sea lions inferred from 13C and 15N values of vibrissae from pups. 8th International Conference on Applications of Stable Isotope Techniques to Ecological Studies. Brest, France. 20-24 August, 2012.

Stricker, C.A., L.D. Rea, D.A.S. Rosen, D.J. Tollit, and S.D. Farley. 2012. Carbon and nitrogen isotope discrimination factors for Steller sea lion vibrissae on milk and fish/squid diets. 8th International Conference on Applications of Stable Isotope Techniques to Ecological Studies. Brest, France. 20-24 August, 2012.

Atkinson, S., D. Calkins, J-A. Mellish, J.N. Waite, L.D. Rea, J. Carpenter and K.L. Mashburn. 2013. Nutritional Stress: Steller sea lion response to diet and fasting. Oral presentation at the 20th Biennial Conference on the Biology of Marine Mammals. Dunedin, New Zealand. 9-13 December, 2013.

Christ, A.M., L.D. Rea, J.N. Waite, C.A. Stricker, M. Wunder and R.D. Scherer. 2013. Surrogate information for assessing maternal diet: matching stable isotope profiles of vibrissae from adult Steller sea lion females and their pups. Oral presentation at the 20th Biennial Conference on the Biology of Marine Mammals. Dunedin, New Zealand. 9-13 December, 2013.

Goldstein, T., J.A.K. Mazet, V.A. Gill, P.L. Boveng, J.M. London, T.S. Gelatt, B.S. Fadely, M.A. Lander, L.D. Rea, K.A. Burek, S.L. Cosby and J.A. Hammond. 2013. Emergence of Phocine Distemper Virus in Arctic and Sub-arctic Pinnipeds in the Northeast Pacific off Alaska. Oral presentation at the 20th Biennial Conference on the Biology of Marine Mammals. Dunedin, New Zealand. 9-13 December, 2013.

Rehberg, M.J. and L.D. Rea. 2013. Seasonal change a stronger influence than growth upon Steller sea lion behavior during their first winter. Poster presentation at the 20th Biennial Conference on the Biology of Marine Mammals. Dunedin, New Zealand. 9-13 December, 2013.

Johnson, G.M., L.D. Rea, J.M. Castellini, T.M. Loomis and T.M. O’Hara. 2014. Relationship between trophic level and total mercury concentrations in 5 Steller sea lion prey species. Poster presentation at the Alaska Marine Science Symposium, Anchorage, AK. 20-24 January, 2014.

Rea, L.D., M.A. Castellini, B.S. Fadely, J.M. Castellini and T.M. O’Hara. 2014. Regional differences in mercury concentrations in Alaskan Steller sea lions may have been persistent over the past 15 years. Poster presentation at the Alaska Marine Science Symposium, Anchorage, AK. 20-24 January, 2014.

Malmlov, A., G.J. Kersh, K.A. Fitzpatrick, T.S. Gelatt, L.D. Rea, R. Delong, B. Dickerson, J.M. Maniscalco, C. Goertz, V. Gill, T. Atwood, T. Goldstein, N. Rouse, D. Lambourn, S. Jeffries, R. Brown, D. Costa and C. Duncan. 2014. Coxiella burnetti exposure in multiple marine mammal species inhabiting the North Pacific Ocean. Poster presentation at the Alaska Marine Science Symposium, Anchorage, AK. 20-24 January, 2014.

  • Water and Environmental Research Center (WERC)
  • 437 Duckering
  • 1760 Tanana Loop
  • PO Box 75 5860
  • Fairbanks, AK 99775-5860, USA