P. Stabeno, PMEL The Bering Sea What is BEST? A program designed to understand and predict the consequences of climate change for Bering Sea marine ecosystems.

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P. Stabeno, PMEL The Bering Sea

What is BEST? A program designed to understand and predict the consequences of climate change for Bering Sea marine ecosystems End to End: Climate, physics, primary production, zooplankton, fish, seabirds, marine mammals and people Strong social sciences component coming on line

Why Study the Bering Sea? One of world’s most productive regions Very rich assemblage of seabirds, marine mammals, fish, shellfish Commercial and subsistence economy Dutch Harbor: # U.S. port $ landings 50 % all fish / shellfish landings in U.S.

Wind Speed Cubed at St. Paul Is. P. Stabeno, PMEL

The Middle Shelf: M2 Mooring

Sea Ice P. Stabeno, PMEL

Changing Climate Bering Sea ice has retreated over last two decades ( ) Percent ice cover within gray box on map above Maximum ice extent P. Stabeno, PMEL

Vertically Averaged Temperature (°C) at Site M2 P. Stabeno, PMEL

Temperature and fluorescence at Sites M2 (left) and M4 (right) P. Stabeno, PMEL M4 M

Early Ice Retreat Late Bloom, Warm Water – Large Copepod Biomass Late Ice Retreat Early Bloom, Cold Water – Small Copepod Biomass FebruaryMarchAprilMayJune Ice, Wind, Bloom, Copepods G. Hunt, U. Calif. Irvine

Emiliania huxleyi cell

Bering Sea Coccolithophore Bloom April 25, 1998 SeaWiFS program

Biomass of Medusae in the S.E. Bering Sea

Cold Regime (Bottom-Up Regulation) Beginning of Warm Regime (Bottom-Up Regulation) Warm Regime (Top-Down Regulation) Beginning of Cold Regime (Both Top-Down and Bottom-Up Regulation) Oscillating Control Hypothesis ZooplanktonLarval SurvivalAbundance of Piscivorous Adult FishJuvenile Recruits

The Bering Sea Is it just a Warmer Barents Sea? George L. Hunt, Jr. University of California, Irvine and Bernard Megrey NOAA Alaska Fisheries Science Center Fur Seal Pups at the Pribilof Is. NMML, NOAA

History of BEST Sept. 2002: Laguna Beach, Initial Planning Mar. 2003: Seattle, Science Plan Workshop Oct. 2004: Science Plan Published May 2005: Open Implementation Workshop June 2005: Draft Implementation Plan needed by NSF

Laguna Beach Workshop, Sept WhoResult R. Beamish K. Drinkwater M. Flint J. Grebmeier R. Harris G. Hunt N. Karnovsky H. Loeng J. Morrison J. Napp B. Norcross G. Ottersen C. Pautzke N. Shiga P. Stabeno N. Swanberg Agreed to the development of : 1) Bering Sea Ecosystem study- BEST a) Envisaged as 5 to 10 year project b) Funding at $ 6-7 million/yr c) Year-round field program with 2 ships and an icebreaker for 3-4 months 2) Ecosystem Studies of Sub-Arctic Seas- ESSAS

Seattle Workshop, Mar Who Result K. Arrigo W. Maslowski R. Brodeur L. McNutt D. Caron J. Napp K. Coyle J. Overland J. Grebmeier G. Owletuck E. Hofmann M. Pete G. Hunt S-I. Saitoh G. Kruse R. Sambrotto E. Lessard P. Stabeno P. Livingston L. Tupas L. Madden Developed Science Plan for BEST: 1) Focus: Predicting effects of climate change on sustainability of eastern Bering marine ecosystems 2) Area to cover: Peninsula to southern Chukchi Sea 3) All Seasons 4) End to End: Including people

SSC Implementation Teleconferences, Mar. - May 2005 Who Result Ben Fitzhugh Rolf Gradinger Eileen Hofmann George Hunt Anthony Merculief Arthur J. Miller Jeff Napp Jim Overland Kenneth Rose R. Sambrotto Sharon L. Smith Peter Winsor Draft Implementation Plan: 1) NSF Guidance: 3-5 years- aim for: 4 field seasons, then 2nd phase 2) NSF Guidance: $1-3 million/yr- aim for: $3-4 million from NSF 3) NSF Guidance- Ship Time-2 months icebreaker plus an ice-strengthened ship- aim for: 3 months of icebreaker time, 4 months of ice-strengthened ship 4) Focus on one area of study and do well

BEST Research Priorities Primary Focus: How is the Disappearance of Sea Ice Affecting the eastern Bering Sea Ecosystem and the people dependent on it? Secondary: a) What Controls the abundance of nutrients on the shelf and what is the influence of climate variability? b) What will be the ecosystem effects of a warmer and more stratified Bering Sea? c) Regional studies: Northern Bering; Pribilofs; Aleutian Passes

BEST Research Priorities Focus on the Spring- 1 March to 30 June How does climate drive ice conditions? How does sea ice affect the type, amount and fate of primary production? What controls the biomass of zooplankton in spring and what role do they play? How do these bottom-up factors interact with top-down mechanisms? What are the expected impacts on upper trophic-level organisms including people?

Implementation Plan- Management Interagency Oversight Committee Science Steering Committee Project Office (once project funded) Chief Scientist Executive Committee (3-4 people) Working Groups as Needed (data management, modeling, integration & outreach, etc)

BEST Bering Sea Partners NSF a) SEARCH NSF-sponsored program on Arctic Change) i) Bering Ecosystem Study (BEST) NOAA a) National Marine Fisheries Service (NMFS) b) National Marine Mammal Laboratory (NMML) c) Pacific Marine Environmental Laboratory (PMEL) d) North Pacific Climate Regimes and Ecosystem Productivity Program (NPCREP) e) Loss of sea Ice (LOSC) (proposed for IPY) North Pacific Research Board (NPRB) Alaska Ocean Observing System (AOOS) US Fish and Wildlife Service (USFWS) US Geological Survey (USGS)

Planned NPCREP Moorings and Lines

BEST Bering Sea Partners International Partners North Pacific Anadromous Fish Commission (NPAFC) a) Bering Aleutian Salmon International Survey (BASIS) Census of Marine Life (CoML) International Pacific Halibut Commission (IPHC) Ecosystem Studies of Sub-Arctic Seas (ESSAS) - GLOBEC a) International Polar Year (IPY) programs

BEST Time Line 2002 Sept. Planning Workshop, Laguna Beach 2003 Mar. Planning Workshop, Seattle 2004 Oct. Science Plan Published 2005 Mar. SSC Formed 2005 May. Open Implementation Workshop 2005 June. Implementation Plan Ready 2005 ? Late Fall. NSF Announcement of Opportunity 2006 Proposals Due 90 days later 2007 Mar. Begin Field Program

BEST Information Sources Web Site: Science Plan: Available in Hard Copy at: Arctic Research Consortium of the U.S. (ARCUS) 3535 College Road, Suite 101 Fairbanks, AK Phone: ; Fax: Planning Group: c/o George L. Hunt, Jr. School of Aquatic & Fishery Sciences University of Washington

Goal of ESSAS The goal of the ESSAS Program is to compare, quantify and predict the impact of climate variability on the productivity and sustainability of Sub-Arctic marine ecosystems.

Major Research Questions How will the External Forcing Functions be Affected by Climate Change? How will Changes in the External Forcing Mechanisms Affect BioPhysical Coupling? How will Changes in BioPhysical Coupling Influence Biological Interactions?