Methods of Collecting Net Plankton from a Series of Known Depths Through the Water Column
Abstract:The equipment and procedures used in a survey of the zooplankton of the Caribbean Sea are described. Opening-and-closing modified “Discovery” nets were towed horizontally in series to sample multiple levels of the water column. An electronic wire-angle indicator was devised by the authors to assist ship's officers in maintaining a relatively constant angle of the hydrowire at the surface and thus contributing to accuracy in sampling selected depths.
Document Type: Research Article
Publication date: December 1, 1969
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