Wroblewski, J.S. (1980). A simulation of the distribution of Acartia clausi during Oregon upwelling, August, 1973. Journal of Plankton Research 2(1):43-68, figs. 1-14, tabs. 1-2, appendix. (ii-1980)

120931

10.1093/plankt/2.1.43 [view]

Wroblewski, J.S.

1980

2(1):43-68, figs. 1-14, tabs. 1-2, appendix. (ii-1980)

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The distribution of the estuarine copepod Acartia clausi in coastal waters off Oregon during an upwelling period in August 1973 is simulated. A time dependent, two dimensional (x, z, t) model relates maximum offshore extent of the copepod's four life stages (egg, nauplius, copepodite, and adult) to intensity of the wind stress driving the upwelling circulation, stage development time, and mortality. Realistic solutions are obtained by using actual intermittent wind forcing recorded by an anemometer at Newport. Offshore transport is overestimated when the circulation model is driven by theoretical continuous winds, suggesting zooplankton may be washed out of coastal upwelling zones (e.g. off Northwest Africa) which undergo periods of prolonged upwelling. With an accurate model of offshore transport and stage development time, the mismatch between predicted and observed distributions may be used to estimate field mortality of the various stages.

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