Using oceanography to determine intertidal recruitment levels

Recent results from a PISCO study at Oregon State University have shown that even relatively straight coastlines may have enhanced recruitment zones attributable to the variable local oceanography. The study shows that in the central Oregon coast barnacle recruitment was increased when reversals of prevailing winds slowed upwelling, illustrated by higher poleward current velocities, and corresponding temperature increases; mussel recruitment showed variable, weaker correlations. The data indicate that substantial decreases or complete reversals of upwelling-driven alongshore currents may be important for barnacle recruitment,but topographically driven differences in the response of currents to wind changes may generate local recruitment differences. Finding these enhanced recruitment zones due to oceanographic processes is vital information for managers seeking to gain the maximum conservation value for their dollar.

Dudas, S. E., B. A. Grantham, et al. (2008). "Current reversals as determinants of intertidal recruitment on the central Oregon coast." ICES Journal of Marine Science 66.


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