The California Current Ecosystems Program conducts research on the status and trends of marine mammals in Washington, Oregon, and California. The research projects focus on estimation of abundance and demographic parameters and the factors that regulate population growth such as disease and environmental changes. Studies of movements, behavior and foraging ecology also provide insight into the role marine mammals play in the California Current Ecosystem as the populations recover from historical exploitation.
Program Leader: Robert DeLong
Recent Reports, Publications, and Posters
- RICK, T. C., R. L. DeLONG, J. M. ERLANDSON, T. J. BRAJE, T. L. JONES, D. J. KENNETT, T. A. WAKE, and P. L. WALKER.
2009. A trans-Holocene archaeological record of Guadalupe fur seals (Arctocephalus townsendi) on the California coast. Mar. Mammal Sci. 25:487-502.
- CONN, P. B., G. C. WHITE, and J. L. LAAKE.
2009. Simulation performance of Bayesian estimators of abundance employing age-at-harvest and mark-recovery data. p. 965-986. In D. L. Thomson, E. G. Cooch and M. J. Conroy (editors), Modeling Demographic Processed in Marked Populations. New York, Springer.
- LEA, M-A., D. JOHNSON, R. REAM, J. STERLING, S. MELIN, and T. GELATT.
2009. Extreme weather events influence dispersal of naive northern fur seals. Biol. Lett. 5:252-257.
- ANGLISS, R. P., and B. M. ALLEN.
2009. Alaska marine mammal stock assessments, 2008. U.S. Dep. Commer., NOAA Tech. Memo. NMFS-AFSC-193, 258 p. (.pdf, 14.4MB). Online.
- FEWSTER, R. M., S. T. BUCKLAND, K. P. BURNHAM, D. L. BORCHERS, P. E. JUPP, J. L. LAAKE, and L. THOMAS.
2009. Estimating the encounter rate variance in distance sampling. Biometrics 65:225-236.
- MELIN, S. R., A. J. ORR, and R. L. DeLONG.
2008. The status of the northern fur seal population at San Miguel Island, California, 2006-2007, p. 41-54. In J. W. Testa (editor), Fur Seal Investigations, 2006-2007. U.S. Dep. Commer., NOAA Tech. Memo. NMFS-AFSC-188.
- HAMEL, N. J., J. K. PARRISH, and J. LAAKE.
2008. Linking colonies to fisheries: Spatio-temporal overlap between common murres (Uria aalge) from Tatoosh Island and coastal gillnet fisheries in the Pacific Northwest, USA. Biol. Conserv. 141:3105-3115.
- STODDARD, R. A., R. L. DeLONG, B. A. BYRNE, S. JANG, and F. M. D. GULLAND.
2008. Prevalence and characterization of Salmonella spp. among marine animals in the Channel Islands, California. Dis. Aquat. Org. 81:5-11. (.pdf, 425 KB).
Online.
- Additional recent California Current Ecosystems Program publications
- Factors Influencing the Activity Budget of Territorial Male California Sea Lions
By: SARAH GUTZWILLER
Conference: Hollings Scholarship Student Presentations, Annual NOAA Science Symposium, Silver Spring, MD
(2009 poster, .pdf, 1.49MB) Online.
- Program Distance: Recent Developments in Analysis and Design Capabilities for Cetacean Population Estimation
By: L. THOMAS, D. L. BORCHERS, S. T. BUCKLAND, J. L. LAAKE, E. REXSTAD
Conference: International Biometric Conference (24th), Dublin, Ireland, July 2008
(2008 poster, .pdf, 985KB) Online.
- Double-Observer Line Transect Methods: Levels of Independence
By: STEPHEN T. BUCKLAND, JEFFREY L. LAAKE, DAVID L. BORCHERS
Conference: Biology of Marine Mammals 17th Biennial Conf., Society for Marine Mammalogy, Cape Town, South Africa, Nov/Dec 2007
(2007 poster, .pdf, 1.03MB) Online.
- Examining the Ontogeny of Foraging Behaviors of the California Sea Lion (Zalophus californianus) Using Stable Isotope Analysis
By: ANTHONY J. ORR, SETH D. NEWSOME, GLENN R. VanBLARICOM, ROBERT L. DeLONG
Conference: Washington Cooperative Fish and Wildlife Research Unit Annual Cooperators Meeting, Seattle, WA, May 2006
(2006 poster, .pdf, 3.09MB) Online.
- Ontogeny of Diving Behaviors of Immature California Sea Lions (Zalophus californianus)
By: ANTHONY J. ORR, ROBERT L. DeLONG, GLENN R. VanBLARICOM, MILES L. LOGSDON
Conference: Biology of Marine Mammals 16th Biennial Conf., Society for Marine Mammalogy, San Diego, CA, Dec 2005
(2005 poster, .pdf, 180KB) Online.
- Abundance and Ecological Distribution of Antarctic Pack Ice Seals in the Pacific Sector of the Southern Ocean
By: P. L. BOVENG, J. L. BENGTSON, J. L. LAAKE, M. F. CAMERON
Conference: Biology of Marine Mammals 16th Biennial Conf., Society for Marine Mammalogy, San Diego, CA, Dec 2005
(2005 poster, .pdf, 5.42MB) Online.
- Seasonal Foraging Behavior of Lactating California Sea Lions From San Miguel Island, California
By: SHARON R. MELIN, ROBERT L. DeLONG
Conference: Lowell Wakefield Fisheries Symposium (22nd), Sea Lions of the World..., Anchorage, AK, Sept/Oct 2004
(2004 poster, .pdf, 129KB) Online.
- Ontogeny of Foraging Behavior of the Immature California Sea Lion (Zalophus californianus): Spatial Patterns & Oceanographic Variables
By: ANTHONY J. ORR, ROBERT L. DeLONG, MILES L. LOGSDON, GLENN R. VanBLARICOM
Conference: Lowell Wakefield Fisheries Symposium (22nd), Sea Lions of the World..., Anchorage, AK, Sept/Oct 2004
(2004 poster, .pdf, 6.6MB) Online.
- Additional recent California Current Ecosystems Program poster presentations