Bering Sea Important: Large Ecosystem, Pollock $2 B, 40 % of US catch Considerable data sources: Annual surveys and research First-order Knowledge Base:

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Presentation transcript:

Bering Sea Important: Large Ecosystem, Pollock $2 B, 40 % of US catch Considerable data sources: Annual surveys and research First-order Knowledge Base: reviews and special issues Considerable management and support activities Not generally overfished: Dynamic ecosystem and climate change

Climate Patterns (PNA+/PDO ) (AO+) (Arctic Warm) Pacific North American Arctic Oscillation Overland and Wang (2005) 2006 Surface Air Temperature Anomalies

Time lags

Hunt et al. (2002) Oscillating Control Hypothesis

Bering Indicators

Multivariate look at indicators

Dendogram of Bering Sea stocks based on hierarchical cluster analysis of pairwise Manhatten distances among standardized recruitment From Franz Mueter & Bern Megrey

Charge to Workshop While understanding the limits from complexity, the ongoing efforts by NMFS and others, and the need for comprehensive reviews (300+ pages), How do we summarized the state of the Bering Sea that will provide sensitive indicators (<10) of change?