Marine Science Symposium, January 2003
Steller Sea Lion (SSL) Presentations

This web page provides access to converted posters and PowerPoint presentations given at the Marine Sciences in the Northeast Pacific Symposium: Science for Resource Dependent Communities, held on 13-17 January 2003, in Anchorage, Alaska. The presentations are designed to help inform scientists and other members of the interested public about recent advances in understanding the marine science that bears on marine resource dependent communities in Alaska and adjacent waters. Significant recent advances in understanding how oceanography, climate and food webs interact are expected to benefit those engaged in fisheries, conservation of protected species, environmental protection and education.

PLEASE NOTE: Symposium presentations are being made available for informational purposes only. Views and results presented are those of the authors only, and no endorsement by NMFS is implied. Any use of the material presented here requires the approval of the authors (e-mail addresses available with the abstract). The conversions are intended to be multibrowser compatible but are best viewed in Internet Explorer *. If you have difficulty accessing the information presented in these presentations please contact the program coordinator. To view and print pdf documents, you must install Adobe Acrobat Reader freeware. Adobe also offers free tools for the visually disabled.

• Workshop agenda
• Abstract book

Main presentation topics:

• Factors Affecting the SSL Population

• Site Specific SSL Studies

• SSL Biology and Ecology

Factors Affecting the Population

Disease, Parasites, Contaminants

• Production and Characterization of Monoclonal Antibodies Against Steller Sea Lion Immunoglobulins
  Jennifer Colvocoresses, Bobby L. Middlebrooks, Rhonda A. Patterson
• Parasites of Fishes Near Two Steller Sea Lion Haulouts in SE Alaska
  Adam Moles
• Evaluation of the Effects of Parasites on Steller Sea Lions in Alaska
  Michelle M. Moore and J. Frank Morado
• Population Survey of Organochlorine Contaminants in Steller Sea Lions (1.5mb .pdf poster)
  Kimberlee B. Beckmen, Kenneth W. Pitcher, Kathleen A. Burek, Gina M. Ylitalo
• Contaminant Exposure and Potential Impacts in Steller Sea Lions in Alaska (876kb .pdf poster)
  Ron Heintz, Mace Barron, Margaret M. Krahn
• Hexavalent Chromium Cytotoxicity Is Organ and Species Specific for Steller Sea Lion and Mink Cells (150kb .pdf poster)
  A.L. Holmes, S.S. Wise, J.E. Little, H. Xie, M. Bozza, J.A. Moreland, D.J. St. Aubin, J.L. Dunn, S. Atkinson, F. Gulland, S. Bursian, J.P. Wise Sr.

Environmental Change

• Physical Changes in the Gulf of Alaska Associated With the 1975-76 Climate "Shift"
  Antonietta Capotondi, Mike Alexander, Art Miller, Doug Nielson
• Patterns and Processes of Pollock Recruitment in the Gulf of Alaska
  L. Ciannelli, K. Bailey, N.C. Stenseth, K.S. Chan, A. Belgrano
• Interannual Trends in Abundance of Ichthyoplankton Species in the Gulf of Alaska During Spring 1981-2000: Exploring Linkages Between Pelagic Ecosystem Dynamics and the Early Life History of Fish
  Miriam J. Doyle and Susan J. Picquelle
• A Critical Review of the "Regime Shift/Junk Food" Hypothesis for the Steller Sea Lion Decline
  Lowell Fritz and Sarah Hinckley
• Inverse Production Regimes and Inverse Population Dynamics of Three High Trophic-Level Consumers in the North Pacific
  John F. Piatt, G. Vernon Byrd, Ken Pitcher, Steven R. Hare
• Seasonal and Spatial Variability of Steller Sea Lion Prey Quality
  Johanna Vollenweider and Ron Heintz
• Long-term Variability in the North Pacific in a Physical-Ecosystem Ocean Model (1.8mb .pdf poster)
  Michael Alexander, Fei Chai, Antonietta Capotondi, Art Miller, Doug Neilson, James Scott
• Long-term Changes in the Gulf of Alaska - Small-mesh Trawl Surveys 1953-1998 (393kb .pdf poster)
  Paul J. Anderson, James E. Blackburn, William R. Bechtol, John F. Piatt
• New Metrics for Ecosystem Change: Bio-diversity and Dynamics of Ichthyoplankton Assemblages (1.3mb .pdf poster)
  Wiebke J. Boeing, Janet T. Duffy-Anderson, Kevin M. Bailey, Ann Matarese, Jeffrey M. Napp, Susan Picquelle, Bern Megrey
• Application of Loop Analysis to Examine the Role of Alternative Community Structures in Determining Steller Sea Lion Population Changes (1.2mb .pdf poster)
  Gabriela Montaño-Moctezuma and Selina Heppell

Fisheries, Fish Assessment and Dynamics

• Spatial Variability in Biological Standing Stocks and SST Across the GOA Basin and Shelves
  Evelyn Brown, Martin Montes, James Churnside
• Pot Studies to Assess Local Abundance and Spawning Biology of Pacific Cod
  Peter Munro, M. Elizabeth Conners, Sandi Neidetcher
• Socioecological Change In the Aleutian Islands
  Lowe

Predation

• Sleeper Shark - Sea Lion Predation Study
  Lee Hulbert, Michael Sigler, Chris Lunsford
• Steller Sea Lions and Killer Whales in Prince William Sound / Kenai Fjords/ Kodiak
  Craig Matkin, Daniela Maldini, Lance Barrett-Lennard
• Transient Killer Whales in Southeastern Alaska
  J. Straley, D. Matkin, C. Gabriele, G. Ellis, L. Barrett-Lennard

Subsistence

• The Subsistence Harvest of Harbor Seals and Sea Lions by Alaska Natives in 2001 (4.2mb .pdf poster)
  Robert J. Wolfe, James A. Fall, Ronald T. Stanek
    

Site Specific SSL Studies

Aleutian Islands

• Zooplankton and Micronekton in Passes of the Eastern and Central Aleutian Islands
  Phyllis Stabeno, Steve Zeeman, George Hunt, Sue Moore
• Interactions Between Commercial Fishing and Atka Mackerel: A Feasibility Study
  Elizabeth A. Logerwell and Susanne McDermott
• Aleutian Ecosystem: Currents, Water Properties and Transport
  Ken Coyle, George Hunt, Nancy Kachel, Carol Ladd, Sue Moore, Calvin Mordy, Sigrid Salo, Steve Zeeman, Phyllis Stabeno
• Physical Oceanography of the Eastern Aleutian Passes (2.1mb .pdf poster)
  Carol Ladd, George Hunt, Jr., Calvin Mordy, Ron Reed, Sigrid Salo, Phyllis Stabeno
• Seasonal Change in Vertical Migration Behavior of Atka Mackerel in Seguam Pass, Alaska (1.1mb .pdf poster)
  Daniel G. Nichol
• Satellite Tracked Drifter Studies in the Eastern Aleutian Passes (773kb .pdf poster)
  Carol Ladd, George Hunt, Jr., Dave Kachel, Sigrid Salo, Phyllis Stabeno

Kodiak

• Seabird Component of the GAP Project: Indicators of Marine Conditions and Potential Competitors of Steller Sea Lions
  C. Loren Buck, S. Dean Kildaw, Katie A. Murra, J. Brook Gamble, Brian Fadely
• Spatially Nested Circulation Modeling of the Coastal Gulf of Alaska: Inferences From Results in the Vicinity of Kodiak Island
  Albert J. Hermann, D.B. Haidvogel, E.L. Dobbins, P.J. Stabeno, D. Musgrave, K. Hedstrom
• Effect of Ocean Conditions on the Cross-shelf Distribution of Walleye Pollock (Theragra chalcogramma) and Capelin (Mallotus villosus)
  Anne Hollowed, Chris Wilson, Phyllis Stabeno, Sigrid Salo
• Currents on the Gulf of Alaska Shelf
  Nick Bond, Nancy Kachel, Carol Ladd, Calvin Mordy, Jeff Napp, Jim Overland, Ron Reed, Sigrid Salo, Phyllis Stabeno
• Fishery Interaction Study Interactions Between Commercial Fishing and Walleye Pollock Prince William Sound
  Chris Wilson, Anne Hollowed, Michiyo Shima, Paul Walline, Sarah Stienessen
• Nutrient Supply to the GOA Shelf in Summer: The Role of Troughs and Shallow Banks (3.3mb .pdf poster)
  N.B. Kachel, C. Ladd, C.W. Mordy, J.M. Napp, S.A. Salo, P.J. Stabeno
• Along-Shelf and Cross-Shelf Flow on the GOA Shelf (1.2mb .pdf poster)
  P.J. Stabeno, N.A.Bond, B. Kachel, D.G. Kachel, N.B. Kachel

Prince William Sound

• Equivocal Indicators of Steller Sea Lion Population Trend in the Prince William Sound Area, Alaska
  Ken Pitcher and John Sease
• Spatial and Numerical Relationships Between Steller Sea Lions and Pacific Herring in Prince William Sound, Alaska
  Richard E. Thorne and Gary L. Thomas
• Airborne Lidar Measurements of Springtime Distributions of Herring in Prince William Sound and Kodiak Island (384kb .pdf poster)
  James H. Churnside

SE Alaska

• Southeast Alaska Steller Sea Lion Prey Study
  M. Sigler, J. Vollenweider, D. Csepp, S. Johnson, J. Thedinga, R. Heintz, T. Gelatt, J. Womble, B. Kelley, A. Trites, W. Karp, N. Williamson, T. Loughlin
• Ecology of Eulachon (Thaleichthys pacificus) in the Antler River, Berners Bay, Southeast Alaska
  Rob Spangler and K Koski
• Spring-Spawning Fish Aggregations: A Seasonal Feast for Steller Sea Lions
  Jamie N. Womble, Mary F. Willson, Michael F. Sigler, Brendan P. Kelly, Glenn R. VanBlaricom
• Lipid Variations in Spawning Eulachon (523kb .pdf poster)
  Lawrence Schaufler, Johanna Vollenweider, Ron Heintz
• Availability of Nearshore Prey to Steller Sea Lions at Two Haulouts in Southeastern Alaska (635kb .pdf poster)
  John F. Thedinga, Scott W. Johnson, David J. Csepp
    

Steller Sea Lion Biology and Ecology

Diet

• Stable Isotope and Elemental Analysis in Investigations of Steller Sea Lion Ecology: Past Approaches and New Methods or Application of Laser Ablation ICP-MS to Elemental Fingerprinting and Isotope Analysis to Evaluate Nutritional History and Diet of Steller Sea Lion
  Sean D. Farley, Vicki K. Stegall, Lorrie D. Rea, W. Ian Ridley

Feeding and Diving Ontogeny

• Diving Behavior and Physiology in Juvenile Steller Sea Lions: What are the Links?
  Jennifer Burns, Michael Rehberg, Julie Richmond
• Fasting Capabilities of Weaned Juvenile Steller Sea Lions: Influence of Body Condition and Activity
  Dawn Noren
• Physiological Development Related to Diving in Steller Sea Lions
  Julie P. Richmond, Jennifer M. Burns, Lorrie D. Rea
• The Density and Accessibility of Winter Prey as Factors Influencing the Foraging Behavior of Steller Sea Lions         4.23mb .mpg movie
  Gary Thomas and Richard E. Thorne
  (movie requires a browser "helper" application on your computer for playing media files)

Nutrition and Hormones

• Investigations of Vitamin A & E Status in Steller Sea Lions: Contribution to Nutritional Stress in Declining Populations
  Lisa M. Mazzaro and David J. St. Aubin
• Cortisol as a Bio-indicator for Stress in Steller Sea Lions
  Matthew J. Myers, Lorrie D. Rea, Kendall L. Mashburn, Shannon Atkinson
• Corticoid Assay Validation to Determine Stress Response of Surgical Implantation of Telemetry Devices in Otariids
  Lisa Petrauskas

Population and Bioenergetic Modeling

• Density Dependence and Spatial Clustering in Steller Sea Lions
  Daniel Hennen
• Energy Density of Steller Sea Lion Prey in Western Alaska: Species, Regional, and Seasonal Differences (1.2mb .pdf poster)
  Elizabeth A. Logerwell and Ruth A. Christiansen

Population Status and Dispersal

• Steller Sea Lion Survey in the Western Bering Sea and the Kamchatka Peninsula in 2002
  Burkanov V. N., Calkins D. G., T. R. Loughlin
• Status and Trend of the Eastern Population of Steller Sea Lions
  Ken Pitcher, Peter Olesiuk, Robin Brown, Mark Lowry, John Sease, Wayne Perryman, Charles Stinchcomb, Lloyd Lowry
• 2002 Surveys of Steller Sea Lions in Alaska
  John L. Sease and Charles Stinchcomb

Transmitter Developments

• Development and Deployment of Remote Monitoring Tools to Study Steller Sea Lion Foraging Ecology and Survival
  Russ Andrews