A5024347196- Aquatic Ecosystems and Phytoplankton Dynamics
- Marine and coastal ecosystems
- Microbial Community Ecology and Physiology
- Isotope Analysis in Ecology
- Fish Ecology and Management Studies
- Aquatic Invertebrate Ecology and Behavior
- Fish biology, ecology, and behavior
- Freshwater macroinvertebrate diversity and ecology
- Protist diversity and phylogeny
- Water Resource Management and Quality
- Coral and Marine Ecosystems Studies
- Marine and fisheries research
- Marine Bivalve and Aquaculture Studies
- Soil erosion and sediment transport
- Geology and Paleoclimatology Research
- Soil and Water Nutrient Dynamics
- Aquatic Ecosystems and Biodiversity
- Marine Biology and Ecology Research
Instituto Tecnológico de Chascomús
2010-2023
Consejo Nacional de Investigaciones Científicas y Técnicas
2013-2023
National University of General San Martín
2014-2023
National University of Mar del Plata
2010
Summary Picocyanobacteria can occur as single‐cell (Pcy) or colonies (CPcy). Published evidence suggests that some Pcy strains have the capability to aggregate under certain culture conditions, however this has not been demonstrated in natural environments. We investigated whether and CPcy belong same species (i.e. phylotype), factors determine their morphological genetic variability a hypertrophic shallow lake dominated by picocyanobacteria. Six main different morphologies >30 phylotypes...
Oithona nana (Copepoda: Cyclopoida) is a widely distributed but poorly known species. The objective of this study was to estimate the seasonal variation O. secondary production in temperate coastal waters off Argentina, South West Atlantic. species occurred throughout year, with higher abundances spring and winter (9692–10132 ind m−3) than summer autumn (5537–8635 m−3). Sex ratio highly skewed toward females. Total length adults immature stages inversely related temperature. Clutch size...
Shallow Pampean lakes are located in the most productive plain of Argentina.They highly variable salinity, turbidity and surface area.Laguna Chascomús has been monitored as a representative example them.We developed linear model based on satellite images validated against field measurements (2001-2011 period).A vegetation index Landsat Surface Reflectance (Band 4) produced best correlations with chlorophyll-a (Chl-a) Secchi Disk Depth (SDD), respectively.In second instance, retrospective...
Seasonal patterns of water transparency in turbid Pampean lakes suggest that the amount seston is strongly influenced by incident solar radiation. However, unequivocal identification light as major forcing variable precluded due its co-variation with several potentially confounding variables. In order to specifically investigate role light, we performed a mesocosm (3000 L) experiment aimed at investigating effects different degrees availability on planktonic community structure and...
Abstract Body size is a master trait controlling biological communities and ecosystem functioning. Mean population not only depends on the of individuals, but also distribution individuals within population. community additionally influenced by composition species (larger- or smaller-sized species). Shallow lakes semi-arid landscapes are prone to experience large changes in temperature salinity, which affect zooplankton structure. Higher temperatures expected result smaller average body...
Instituto Tecnologico de Chascomus (INTECH) Copepods are key components in the marine communities because of their important role transfer matter and energy from primary producers to higher trophic levels export organic euphotic deeper layers oceans (CALBET et al., 2000). Because as prey for fishes at different stages development, knowledge zooplankton abundance biomass spatial temporal scales remains a element ecosystem approaches (IRIGOIEN 2009). In fisheries science, accurate estimations...
The relationship between the timing of recurrent biological events and seasonal climatic patterns (i.e., phenology) is a crucial ecological process. Changes in phenology are increasingly linked to global climate change. However, current evidence phenological responses recent change subjected substantial regional biases. Most available on climate-driven changes comes from Northern Hemisphere (NH) ecosystems typically involves increases spring summer temperatures, which translate into earlier...
In aquatic systems, an interplay between bottom-up and top-down processes determines the dynamic of picocyanobacteria (Pcy) abundance community structure. Here, we analyzed a 10-year time series (sampled fortnightly) from hypereutrophic turbid shallow lake located within Pampa Region South America, generating first long-term record freshwater Pcy Southern Hemisphere. We used cytometric approach to study community, focused on its relations with nutrient light conditions (bottom-up) potential...
Phytoplankton size structure has profound consequences on food-web organization and energy transfer. Presently, picocyanobacteria (size < 2 µm) represent a major fraction of the autotrophic plankton Pampean lakes. Glyphosate is known to stimulate development capable degrading herbicide. Due worldwide adoption glyphosate-resistant crops, herbicide usage increased sharply since mid-1990s. Unfortunately, there are very few studies (none for Pampa region) reporting abundance before 2000. The...