Example Predictions of Changes in the CCS Associated with Global Climate Change
Decreased inflow from the north and total transport in the CCS (Peterson et al. 1993)
Increased intensity of upwelling, offshore transport and mesoscale activity (Bakun 1990, Hsieh and Boer 1992)
- Potential Impact: Decreased zooplankton production and prey for higher trophic levels (fish) (Chelton et al. 1982)
Altered frequency and intensity of ENSO events (Meehl et al. 1993)
- Potential Impact: Decreased survival and recruitment to coastal fish and invertebrate populations because of increased offshore transport of larvae and/or dispersion of prey organisms (Lasker 1975; Parrish et al. 1981; Bailey 1981; Farrell et al. 1991).
Increased average sea surface temperature (1-2 deg
C; Manabe et al. 1991, 1992) and increased stratification of the water column (Peterson et al. 1993)
- Potential Impact: More frequent and stronger disruptions of "normal" conditions, favoring different species adapted to disturbed environments; periodic warmer than average temperatures; perhaps regime shifts.
- Potential Impact: Shifts in major biogeographic boundaries; altered recruitment rates of coastal species through changes in the effectiveness of larval transport; increases in warm water predators altering mortality patterns and rates.