Distribution and abundance of thaliaceans and copepods off the southeastern U.S.A. during winter

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• 作者：Paffenhofer ; G.-A. ; Atkinson ; L. P. ; Lee ; T. N. ; Verity ; P. G. ; Bulluck III ; L. R.
• 刊名：Oceanographic Literature Review
• 出版年：1995
• 出版时间：May, 1995
• 年：1995
• 卷：42
• 期：5
• 页码：383-384
• 全文大小：202 K

文摘

The abundance and distribution of these plankton were studied in relation to physical and biological variables on the middle and outer shelf offSouth Carolina, U.S.A. The inner and part of the middle shelf were vertically mixed throughout the study period, the middle and outer shelf only after passage of a storm on 4 and 5 February. Subtidal currents at the 40 m isobath were highly correlated with local along-shore winds, whereas at the 75 m isobath the currents showed a mixed response to wind and Gulf Stream events. Chlorophyll concentrations in the study area usually surpassed 0.5 and reached levels of 3 μg 1⁻¹. Zooplankton was characterized by high abundances of doliolids (Tunicata, Thaliacea) and relatively low concentrations of calanoid and cyclopoid copepods. When doliolids were very abundant the vertical distribution of doliolids was inversely related to those of the calanoids. Possible reasons for this inverse relationship are discussed.