A5022291638- Geology and Paleoclimatology Research
- Marine Biology and Ecology Research
- Isotope Analysis in Ecology
- Geological formations and processes
- Coastal wetland ecosystem dynamics
- Methane Hydrates and Related Phenomena
- Pleistocene-Era Hominins and Archaeology
- Archaeology and ancient environmental studies
- Archaeological and Geological Studies
- Geochemistry and Geologic Mapping
- Geological and Geophysical Studies Worldwide
- Evolution and Paleontology Studies
- Paleontology and Stratigraphy of Fossils
- Archaeological and Historical Studies
- Lichen and fungal ecology
- Coastal and Marine Dynamics
- Medieval Architecture and Archaeology
- Groundwater and Isotope Geochemistry
- Environmental and Ecological Studies
- Maritime and Coastal Archaeology
- Marine and coastal plant biology
- Mycorrhizal Fungi and Plant Interactions
- Botany and Plant Ecology Studies
- Geological and Geochemical Analysis
- Paleontology and Evolutionary Biology
Consejo Nacional de Investigaciones Científicas y Técnicas
2009-2024
National University of Comahue
2011-2024
Centro Científico Tecnológico - San Juan
2021-2023
Bariloche Atomic Centre
2009
Research Article| April 01, 2011 BENTHIC FORAMINIFERAL MORPHOGROUPS ON THE ARGENTINE CONTINENTAL SHELF Marta Inés Alperin; Alperin 3 1Cátedra de Estadística, Facultad Ciencias Naturales y Museo, Universidad Nacional La Plata, Buenos Aires, Argentina; Edificio Institutos Laboratorios, Calle 64 120, 1900 Argentina 3Correspondence author: E-mail: alperin@fcnym.unlp.edu.ar; marta.alperin@gmail.com Search for other works by this author on: GSW Google Scholar Gabriela Catalina Cusminsky; Cusminsky...
Abstract The aim of this study was to determine foraminiferal associations from recent sediments Argentina's continental shelf (39–41ºS, 59–61ºW; 11–70 m) and assess their relationship physicochemical parameters. From 20 samples, all dominated by sandy (>80% sand), 44 species foraminifers were identified, most commonly Buccella peruviana. Recovered tests generally well preserved, with morphologies indicating predominantly epifaunal, free-living detritivores well-oxygenated waters....
Benthic foraminiferal assemblages recovered from T1 core samples of the Colorado basin, in continental margin southeastern Argentina, were analyzed to understand their distribution patterns and ecological preferences. The showed two well-represented species: Elphidium aff. poeyanum (d’Orbigny) Buccella peruviana (d’Orbigny), among others very low proportion. Statistical analyses allowed identifying positive correlations between abundance E. silt content B. sand content, reflecting better...
In this investigation, we carried out a Mid-Holocene paleoenvironmental reconstruction based on fossilized benthic foraminifera, retrieved from sedimentary deposits located in Bahía Samborombón coastal plain. A total of 38 species, grouped into 19 genera, were identified. The assemblage, constituted mainly by Buccella peruviana (d’Orbigny), Cribroelphidium poeyanum Ammonia parkinsoniana (d’Orbigny) and tepida (Cushman), indicate predominantly abnormal marine conditions, characterized low...
The objective of this work was determinate the diversity and abundance benthic foraminifers from recent sediments Channel 15, Samborombón Bay (35º57´-35º58´S 57º25´-57º22´W). From analysis, we identified 31 species grouped within 17 genera. assemblages were composed mainly hyaline agglutinated forms characterized by Elphidium aff. poeyanum, gunteri, Ammonia parkinsoniana, Arenoparella mexicana Trochammina inflata, reflecting an environment marsh or floodplain. foraminifer's tests generally...
The study about the distribution of benthic foraminifers in relationship with type substrate is presented. Samples surface sediments from 15 to 60 m depth southeast coast province Buenos Aires (40º 30´ - 42ºS), Argentina were analysed. foraminiferal assemblage was constituted by forty-eight species that belong 22 genera. It characterized mostly free-living style, epifaunal microhabitats, oxic levels and a detritivore trophic strategy. Based on statistical analysis, three zones determinated:...
The effect of Holocene sea-level changes and their impact on coastal environments have been well-preserved in different places worldwide. Several studies along the Argentine margin contributed to understanding extent magnitude marine ingression occurred during Mid–Holocene Highstand its ecosystems. In this research, we present a benthic foraminiferal fauna analysis an outcrop located Samborombón Bay, Argentina, with aim evaluate maximum transgression middle zone bay. Along sedimentary...
The present study provides a detailed record of foraminiferal fauna and their ecological implications from surface sediments Atlantic shelf Tierra del Fuego, Argentina. assemblage is mostly composed by four main hyaline genera, such as Cibicidoides, Cibicides, Globocassidulina Buccella, which allowed the identification three environmental zones. Zone 1 (Z1, 37 to 90 m) encompasses eastern Beagle Channel San Sebastian Bay. reflected well-oxygenated marine inner habitat, adapted cold temperate...
Menegazzia caliginosa P.James & D.J.Galloway, M. kantvilasii and subbullata Kantvilas are reported for the first time from outside Australasia, dispora (Nyl.) R.Sant. is noted here as a record Argentina. We also report discovery of fertile specimens kantvilasii, with morphological anatomical features its apothecia described. A comparison characters species in Argentina presented. The lichenicolous fungus, Abrothallus parmeliarum (Sommerf.) Nyl., on new to lichen mycobiota