A Comparative Study of Zooplankton from Oceanic, Shelf, and Harbor Waters of Jamaica

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Abstract
Quantitative zooplankton samples and hydrographic data were collected in oceanic, shelf, harbor mouth and harbor basin waters of the Caribbean Sea off Jamaica, from Feb. 1962-July 1964. These data constitute a pre-condition baseline study in an area of subseqent increased pollution. All measurements were higher for the harbor stations than for the shelf and oceanic stations, indicative of and island mass effect. Considerable fluctuations occurred in quantitative measuremts for all stations, more than an order of magnitude in each case, but the overall variations showed no distinct seasonal pattern. A total of 87 sp. of zooplankters were identified from oceanic (1J), 84 from shelf (2J), 77 from harbor mouth (3J) and 66 from harbor basin waters (4J). Copepods were the most important constituent of the zooplankton in all areas, but most important at the shelf and oceanic stations. Other important zooplankters were fish eggs at 1J, and cladocerans, larvaceans and larvae at 3J and 4J. Chaetognaths were relatively abundant at the 2 harbor stations.

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