A5033601520- Diatoms and Algae Research
- Marine Toxins and Detection Methods
- Marine and coastal ecosystems
- Marine Biology and Ecology Research
- Microbial Community Ecology and Physiology
- Marine Biology and Environmental Chemistry
- Protist diversity and phylogeny
- Environmental Chemistry and Analysis
- Botanical Research and Applications
- Aquatic Ecosystems and Phytoplankton Dynamics
- Cephalopods and Marine Biology
- Water Quality Monitoring and Analysis
- Fern and Epiphyte Biology
- Marine Sponges and Natural Products
- Mediterranean and Iberian flora and fauna
- Plant Diversity and Evolution
- Analytical chemistry methods development
- Plant Taxonomy and Phylogenetics
- Marine and coastal plant biology
- Paleontology and Stratigraphy of Fossils
- Environmental Toxicology and Ecotoxicology
- Marine Invertebrate Physiology and Ecology
- Animal Ecology and Behavior Studies
- Yeasts and Rust Fungi Studies
- Calcium Carbonate Crystallization and Inhibition
Universidad Nacional de La Plata
2013-2025
Consejo Nacional de Investigaciones Científicas y Técnicas
2011-2024
Centro Científico Tecnológico - San Juan
2007-2018
Centro Científico Tecnológico - La Plata
2015-2017
Centro Científico Tecnológico - Tucumán
1970-2014
Observatoire Océanologique de Banyuls-sur-Mer
2010
Fundación Ciencias Exactas y Naturales
1985
National University of Mar del Plata
1985
As a part of monitoring program harmful microalgae in the coastal waters Buenos Aires Province, two strains chain-forming Gymnodinium species (Dinophyceae), LPCc043 and LPCc044, were isolated from samples collected Samborombón Bay. This study aims to provide morphological, phylogenetic toxicological characterization strains. Among marine species, only G. catenatum impudicum are known form algal blooms (HAB). Morphological analysis with light electron scanning microscopy (LM, SEM) revealed...
Resumen.-El género Chaetoceros es un componente importante del plancton marino, de amplia distribución mundial en términos diversidad y biomasa.El presente trabajo está abocado a la morfología, taxonomía las especies pertenecientes al encontradas aguas costeras marinas Provincia Buenos Aires, Argentina.Las muestras fitoplanctónicas fueron recolectadas desde noviembre 1994 hasta septiembre 2000 siete estaciones ubicadas lo largo costa bonaerense entre los paralelos 36º20' 37°20' S. El...
This study describes the diversity of species belonging to diatom families Thalassionemataceae Round and Rhaphoneidaceae Forti frequently found in temperate marine coastal waters Buenos Aires Province, Argentina, from October 1994 September 2000.It comprises morphological, taxonomic distributional analysis planktonic samples collected at San Clemente del Tuyú, Santa Teresita, La Lucila Mar, Mar de Ajó, Nueva Atlantis, Pinamar Villa Gesell.Raw cleaned were analysed with light scanning...
Dinophysis spp.
A partir de un monitoreo microalgas toxígenas y toxinas en moluscos iniciado 2008, llevado a cabo entre San Clemente del Tuyú Mar Azul (Zona Norte) la Bahía Anegada Sur) Provincia Buenos Aires fueron registrados cuatro brotes toxicidad por toxina paralizante (PSP) ocho lipofílicas (DSP/no determinadas). Los resultados obtenidos empleados como herramienta técnica dela cual autoridad aplicación (Dirección Provincial Pesca Ministerio Asuntos Agrarios Aires) fundó decisión imponer once vedas una...
Amphora coffeaeformis (Agardh) Kützing has been reported in Argentina from marine and inland environments. Since this species frequently misidentified, we carried out a review of materials corresponding to the records A. compared them with photographs type material. All analyzed are similar as regards valve outline dimensions; however, they differ morphology, mainly striae areolae. The presence was corroborated Buenos Aires (Arroyo Tapalqué), Jujuy, San Luis La Pampa. Mar del Plata...
The morphology and taxonomy of species the genera Cocconeis Ehrenberg Psammococconeis Garcia from Gulf San Matías (Patagonia, Argentina) is documented in present study. A total 16 taxa one were found surface net hauls taken shallow coastal waters Gulf. fluminensis var. fluminensis, C. subimpleta, guttata, peltoides neothumensis marina are new records for southwestern Atlantic Ocean.
Colonies that could be identified as Thalassiosira rotula, others gravida and colonies with a mixture of the valve structures these two species were found coexisting in same samples from Piedras Coloradas (40°50′46″S, 65°06′18″W). Net collected surface water at several stations northern area San Matías Gulf Río Negro Province, Argentina, April 1998 to May 2000 March 2006 2007. Untreated cleaned diatom examined using light scanning electron microscopy. The differential features used...
A new sigmoid diatom species Haslea sigma sp. nov. was found alive in sediment composed of clay and silt salt marshes Southern Brazil. The is morphologically distinctive by the following combination characters: 1) valve, 2) thickened virgae forming a pseudostauros, 3) central raphe fissures almost straight 4) terminal slightly curved. It analyzed light electron microscopy compared with nipkowii other spindle-shaped taxa possessing pseudostauros.
This study deals with the morphology, taxonomy and distribution of species belonging to diatom genus Thalassiosira found in marine waters along northern coast San Matias Gulf, Argentina. Net samples were collected from surface layer water column at Punta Orengo, Las Garzas, Banco Reparo, Los Alamos, Grutas, Piedras Coloradas, Bajo de Oliveira El Fuerte April 1998 February 2000. Untreated cleaned examined by light scanning electron microscopy. Eighteen taxa identified. T. frenguelliopsis is...
Abstract The present paper describes the morphology, taxonomy, and distribution of species belonging to diatom genera Rhizosolenia s. str., Neocalyptrella, Pseudosolenia Proboscia, found in marine coastal waters Buenos Aires Province, Argentina. phytoplankton samples were collected from October 1994 September 2000 at seven locations analyzed by light scanning electron microscopy. antennata f. antennata, R. bergonii, hyalina, imbricata, setigera setigera, pungens, Neocalyptrella robusta,...
In the framework of a monitoring program harmful microalgae from marine coastal waters Buenos Aires Province, seven strains were isolated and characterized by morphological molecular analysis (LSU rDNA partial sequencing, D1–D3 regions). Established belonged to Alexandrium catenella, Protoceratium reticulatum Pseudo-nitzschia multiseries. The toxinological profile target determined UHPLC-FLD equipment for paralytic shellfish toxins (PSTs) LC-MS/MS lipophilic (LSTs) amnesic (ASTs). toxin...
Diatoms responsible for harmful events in other geographic areas, found the coastal waters of San Matías Gulf (Río Negro Province, Argentina), were studied.Materials collected two sampling stations related to natural banks and cultures bivalves: Las Grutas Piedras Coloradas.Two potentially toxigenic taxa 18 non found.Despite that some these occasionally abundant plankton area, none them caused evident discolorations or detectable effects during study period.
While conducting surveys of marine phytoplankton from coastal waters the Anegada Bay (Province Buenos Aires, Argentina) we found several eupodiscoid diatoms belonging to genus Odontella sensu lato. Raw and cleaned samples collected at Los Pocitos, Ría del Jabalí San Blas between 2008 2010, were analyzed with light scanning electron microscopy. Based on a morphological analysis, species loculate areolae ocellus-bearing elevations are included in genera Trieres (T. mobiliensis T. sinensis)...
In the framework of a phytoplankton and biotoxin monitoring program implemented since 2008 in marine coastal waters Buenos Aires Province (Argentina), gymnodinioid, photosynthetic dinoflagellate was isolated from sample collected Santa Teresita, establishing strain LPCc007. The identified as belonging to psammophilic genus Togula by light microscopy based on following distinctive characters: morphology cell dorso-ventrally flattened, course cingulum, highly asymmetric, descending, with its...
The morphology of Chaetoceros tenuissimus Meunier, a little-known species, has been studied for the first time with electron microscopy. C. placed as synomyn simplex Ostenfeld since approximately 1930, and misidentified or neglected in routine phytoplankton counts. cells are very small solitary, square to rectangular girdle view. setae narrow straight, arising from two poles valve at an angle 45° its apical axis. face possesses annulus, delimited by hyaline rim. Costae areolae radiate...
Sar E.A., Sunesen I. and Jahn R. 2010. Coscinodiscus perforatus revisited compared with radiatus (Bacillariophyceae). Phycologia 49: 514–524. DOI: 10.2216/09-03.1The present study is devoted to the morphology, taxonomy distribution of Ehrenberg Ehrenberg. was erected by on basis sediment material collected from Richmond, Virginia. Subsequently, several authors considered this taxon a synonym C. radiatus. An examination type carried out scanning electron microscopy lecto- epitype were chosen....