Ecological aspects of zooplankton (Foraminifera, Pteropoda and Chaetognatha) of the Southwestern Atlantic Ocean.

BOLTOVSKOY DEMETRIO

VELIGER

CALIFORNIA MALACOZOOLOGICAL SOC INC

Lugar: Los Angeles; Año: 1975 vol. 18 p. 203 - 216

0042-3211

This work presents the results of the study of the fauna of Foraminifera, Pteropoda and Chaetognatha obtained on two different occasions: July 1973 and January 1974 (Table I). These collections were made by the Research Vessel Goyena (Servicio de Hidrografia Naval, Armada Argentina). Presently the bibliography related to the use of plankters as oceanic hydrologic indicators is very extensive. The majority of the investigators involved with this subject did so based only on one taxon of organisms. Very seldom were two or more taxa included. From this point of view Foraminifera is the best group studied. However, nowhere has an attempt been made to undertake a correlative study of these three groups simultaneously with the same goals as those of the present work. An important aspect in this type of investigations is that once the principal equalities have been established, they will allow deduction of unknown faunistical parameters based on others already studied. It is in line, then, to call the attention of planktologists to the prosecution of this type of studies encompassing other taxa. In summary, we can synthesize the objectives of this work as: 1. Detection of the hydrological areas on the basis of the interpretation of the three indicator groups; 2. Comparison of the results with other hydrological schemes; 3. Comparative evaluation of the three taxa with reference to their use as indicators.