OSTRÁCODOS DE LAGOS SOMEROS DE LA REGIÓN CENTRAL DE ARGENTINA: IMPLICACIONES PALEOLIMNOLÓGICAS

PALL, JOSE LUIS; CRESPO, FLORENCIA; KIHN, ROMINA G.

REVISTA BRASILEIRA DE PALEONTOLOGIA

SOC BRASILEIRA PALEONTOLOGIA

Lugar: Porto Alegre; Año: 2018

1519-7530

OSTRACODS OF SHALLOW LAKES OF THE CENTRAL REGION OF ARGENTINA: PALEOLIMNOLOGICAL IMPLICATIONS. Studies about ostracods in shallow lakes are very scarce in the province of La Pampa, so the objective of this work was to contribute to the knowledge of the species present in lentic environments, to study the distribution, abundance and specific associations of ostracods. The samples come from four shallow lakes of the pampean region, province of La Pampa, Argentine. Sampling was performed along a transects perpendicular to the shore. A total of 5 genera represented by 7 species of benthic ostracods were identified. Heterocypris similis was present in all sampled water bodies but was dominant in the LDT and LCM lakes. Cypridopsis vidua was very abundant in the LCM lake. Chlamydotheca incisa and Potamocypris unicaudata. were only recorded in the water eye LCS. One species was the first registry for the province and other is thefirst appointment for Argentina. The qualitative and quantitative variations of the ostracod assemblages can be related to topography, sedimentology, vegetation and salinity variations. The results of this study are of immense importance in the interpretation of the environments recorded during the Quaternary, since these species are also registered as fossils.