, Volume 21, Issue 4, pp 277-288

Seasonal cycles of abundance in zooplankton populations of Yaquina Bay, Oregon

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Abstract

Descriptions of the seasonal cycles of abundance of the dominant zooplankters of Yaquina Bay, Oregon, USA, are derived from a 7 year series of net samples taken at two downstream stations. The summer dominants are forms distributed to the north, along the American coast. Winter dominants have sonthern affinities. This cycle is associated with the annual cycle of coastal surface currents: from north to south in summar, reversed in winter. There are no persistent trends in the abundance data from year-to-year.

Communicated by J. Bunt, Miami