Tintinnids : a taxon-vertical distributional study of settling assemblages from the Panama Basin
1992
Ling, Hsin Yi
A series of samples collected in sediment traps deployed in the Panama Basinat various depths for 112 days were analyzed to examine the vertical flux of tintinnids,the trumpet-shaped ciliate protozoans. Tintinnids in the 63-250 pm size range revealthat: (1) faunal composition does not change significantly through the water column;(2) at approximately 1,200 m there is a slight increase with depth in the abundance ofCodonellopsis, a lorica with a hyaline neck and an agglutinated bowl, and an associatedslight decrease in the abundance of Rhabdonella, a lorica consisting entirely of a delicatehyaline nature; and (3) no apparent effect of dissolution was noticed in tintinnidspecimens in sediment traps at all depths.
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