1. Temperature anomaly o C Ice concentration

2. Impacts of Climate Variations on the Bering Sea Ecosystem Overarching theme: Describing the state of the Bering Sea, and using this information for inter-disciplinary and multi-institution studies

4. Temperature and fluorescence at Sites 2 (left) and 4 (right)

5. Depth-Averaged Temperature in the SE Bering Sea

6. Vertically Averaged Temperature (°C) at Site 2

7. Grey - Lowest 1/3 Pink - Middle 1/3 Red - Highest 1/3 1965 1975 1985 1995 Bering Sea Climate Indices

9. Bering Sea Pollock

10. Pollock and Bottom Temperature 0 0 0 2 2 4 0.0 0.25 0.50 0.75 1.0 Relative CPUE 170 o W 170 165 160 o W 60 o N 58 o N 60 o N 58 o N J Ianelli

11. Hunt et al., 2002 Oscillating Control Hypothesis

12. Pollock Recruitment with Summer Wind Mixing & Winter Surface Temperature 1978199619821989

13. Produced from NOAA/PMEL’s Bering Sea Climate Theme Page

16. St. Paul St. George Northern fur seal pups born on Pribilof Islands Error bars are 95% confidence intervals http://nmml.afsc.noaa.gov/alaskaecosystems/nfshome/survey2004pribpups.htm

17. [M. Webber-USFWS] Walrus herd in the Chukchi Sea– June 2002 Schematic of food web in the northern Bering and Chukchi Seas [Grebmeier and Dunton 2000] Clam food in walrus stomachs [photos courtesy G. Sheffield]

18. 850 mb Temperature: 1-January-1975 Bering Sea Arctic North Pacific Bering Climate Cold/Dry Arctic Air vs. Warm/Moist Pacific Air

19. Mooring Sites 4 2 5

20. Final Remarks Present - Can often go beyond exploratory correlative analysis to scenario testing based on induction. Near Future - Continue monitoring and process studies to refine quantitative understanding of mechanisms.