Retention efficiency of a conical plankton net

Abstract

       The retention efficiency of a conical plankton net with 132 µm meshes was examined with the covered-net method.

       The net was covered externally by another net with gauze of 63 µm meshes and the proportion of organisms released through the meshes of the inner net but retained by the outer was estimated.    

       The data show that the greatest proportion of microzooplankters escaped through the 132 µm meshes and escapement reached 99% in copepod nauplii.