Central Scientific Issues
The PICES Implementation Plan presented a set of Central Scientific Issues. Key research activities
related to these issues will include retrospective analyses, development of models, process studies,
development of observational systems, and data management. The central scientific issues to be
addressed by the PICES-GLOBEC CCCC program are:
Examples of potential U.S. projects that could be conducted to address the subset of questions for
each of three study regions (the oceanic and coastal domains of the Subarctic Pacific and the Bering
Sea) were advanced at the U.S. GLOBEC sponsored workshop held in 1995 (U.S. GLOBEC Rept.
No. 15, 1996).
- Physical forcing: What are the characteristics of climate variability; can interdecadal patterns be
identified; how and when do they arise?
- Lower trophic level response: How do primary and secondary producers respond in
productivity, and in species and size composition, to climate variability in different ecosystems of the
- Higher trophic level response: How do life history patterns, distributions, vital rates, and
population dynamics of higher trophic level species respond directly and indirectly to climate
- Ecosystem interactions: How are subarctic Pacific ecosystems structured? Do higher trophic
levels respond to climate variability solely as a consequence of bottom-up forcing? Are there
significant intra-trophic level and top-down effects on lower trophic level production and on energy