Diatom assemblages from surface sediments of the Río de la Plata estuary, Uruguay
| Autor: | Carolina Cuña, Laura Perez, Carolina Crisci, Inés Sunesen, Ernesto Brugnoli, Felipe García-Rodríguez, Pablo Muniz, Eugenia A. Sar |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Actinocyclus normanii 010504 meteorology & atmospheric sciences Species distribution Aquatic Science 01 natural sciences Ciencias de la Tierra y relacionadas con el Medio Ambiente DIATOMS SALINITY AUTO-ECOLOGY ESTUARY Ecology Evolution Behavior and Systematics 0105 earth and related environmental sciences Water Science and Technology Trophic level geography geography.geographical_feature_category Ecology biology SOUTHWESTERN ATLANTIC OCEAN 010604 marine biology & hydrobiology Sediment Estuary biology.organism_classification Salinity Taxon Oceanography Diatom TURBIDITY Environmental science Meteorología y Ciencias Atmosféricas SEDIMENTS CIENCIAS NATURALES Y EXACTAS |
| Zdroj: | New Zealand Journal of Marine and Freshwater Research. 52:383-397 |
| ISSN: | 1175-8805 0028-8330 |
| DOI: | 10.1080/00288330.2017.1417318 |
| Popis: | The Río de la Plata estuary (RdlP) exhibits environmental gradients associated with the freshwater input and oceanic water intrusion. The aim of this study was to assess diatom species distribution in surface sediment samples related to such environmental gradients. The internal section of RdlP was dominated by Aulacoseira spp., Eunotia spp., Staurosirella martyi, Actinocyclus normanii and Thalassiosira baltica, indicatives of low salinity levels and high trophic conditions, associated with the riverine and estuarine regimes. The external section was dominated by Coscinodiscus radiatus, Thalassiosira spp., Paralia sulcata, Cyclotella striata, among other marine taxa, indicatives of high salinity and low trophic conditions, associated with the influence of the Southwestern Atlantic Ocean. Furthermore, the intermediate section presents a mixture of both diatom groups representing mixing conditions. The observed diatom species groups capture fairly well the RdlP environmental variability and can be reliably used for paleoenvironmental studies in this and other similar estuarine systems. Fil: Perez, Laura. Universidad de la República; Uruguay Fil: Brugnoli, Ernesto. Universidad de la República; Uruguay Fil: Muniz, Pablo. Universidad de la República; Uruguay Fil: Sunesen, Inés. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina Fil: Sar, Eugenia Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina Fil: Crisci, Carolina. Universidad de la República; Uruguay Fil: Cuña Rodriguez, Carolina Celeste. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina Fil: Garcia Rodriguez, Felipe. Universidad de la República; Uruguay |
| Databáze: | OpenAIRE |
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