Match!
Gisela Mayora
National Scientific and Technical Research Council
NutrientFloodplainEcologyPhytoplanktonBiology
17Publications
5H-index
85Citations
What is this?
Publications 20
Newest
#1Gisela Mayora (CONICET: National Scientific and Technical Research Council)H-Index: 5
#2Pablo A. Scarabotti (CONICET: National Scientific and Technical Research Council)H-Index: 7
Last. Mercedes Marchese (CONICET: National Scientific and Technical Research Council)H-Index: 16
view all 5 authors...
Abstract River-floodplain systems host very high biodiversity and provide a great variety of ecosystem services due largely to their high environmental heterogeneity, which is strongly dependent on spatial and temporal scales of observation. We aimed to describe the main patterns of environmental variation of the subtropical system of the Middle Parana River at different scales of analysis using univariate and multivariate statistics. Physical, chemical and biological variables were analyzed dur...
1 CitationsSource
#1María Florencia Gutierrez (CONICET: National Scientific and Technical Research Council)H-Index: 8
#2Florencia Rojas Molina (CONICET: National Scientific and Technical Research Council)H-Index: 3
Last. Yamila S. Battauz (CONICET: National Scientific and Technical Research Council)H-Index: 5
view all 5 authors...
Stresses imposed by insecticides and predators are possibly the most rigorous filters to which aquatic organisms are exposed in rivers and lakes associated with agricultural lands. However, their interactive effects on zooplankton communities are still unclear. This study elucidated the zooplankton community response to fish predation, the insecticide chlorpyrifos (CLP), and a combination of both factors, using a 30-day mesocosm experiment. The zooplankton assemblage was influenced by fish prese...
Source
#1Paula Huber (CONICET: National Scientific and Technical Research Council)H-Index: 3
#2Sebastián Metz (CONICET: National Scientific and Technical Research Council)H-Index: 2
Last. Melina Devercelli (CONICET: National Scientific and Technical Research Council)H-Index: 9
view all 6 authors...
Determining which processes take place in the spatial distribution of bacterioplankton metacommunities has been a central goal of microbial ecology. In freshwater ecosystems, selection has been spotted as the main driver shaping bacterial community. However, its relative importance compared with others processes (dispersal, drift, diversification) may depend on spatial heterogeneity and dispersal rates within a metacommunity. Still, a decrease in the role of selection is expected with increasing...
Source
#1Diego Frau (CONICET: National Scientific and Technical Research Council)H-Index: 5
#2Yamila S. BattauzH-Index: 5
Last. Rodrigo Sinistro (Facultad de Ciencias Exactas y Naturales)H-Index: 3
view all 6 authors...
Although several studies explain the trophic cascade in water systems, we lack knowledge about top-down–bottom-up effects on phytoplankton from eutrophic lakes. In this study, we tested the importance of trophic cascades on phytoplankton structure, predicting that environmental variations are the main drivers. We performed a monthly sampling during a year to measure environmental variables, phytoplankton and zooplankton, plus two samplings (winter and summer) to assess fish structure. Furthermor...
Source
#1Gisela Mayora (CONICET: National Scientific and Technical Research Council)H-Index: 5
#2Melina Devercelli (CONICET: National Scientific and Technical Research Council)H-Index: 9
Source
#1Berenice Schneider (CONICET: National Scientific and Technical Research Council)H-Index: 3
#2Gisela Mayora (CONICET: National Scientific and Technical Research Council)H-Index: 5
Abstract The release of allelochemicals by aquatic macrophytes can inhibit or benefit other plants. Here we studied allelopathic interactions between syntopic species native to the Neotropical region. First, we quantified the phenolic exudation in monospecies cultures of Ludwigia peploides (L) and Azolla sp. (A) and in co-cultures of both species growing together (A + L) compared to control water. Then, we studied the germination of Polygonum ferrugineum seeds exposed to the exudates and control...
Source
#1Diego Frau (CONICET: National Scientific and Technical Research Council)H-Index: 5
#2Gisela Mayora (CONICET: National Scientific and Technical Research Council)H-Index: 5
Last. Melina Devercelli (CONICET: National Scientific and Technical Research Council)H-Index: 9
view all 3 authors...
Urban lakes constitute important recreational areas, but often they are eutrophicated. In this study we discuss the utility of 12 ecological quality metrics to test whether they: (1) can be applied to Neotropical lakes; (2) are sensitive to environmental variations throughout the year; and (3) are affected by heterogeneous spatial distribution of phytoplankton. Phytoplankton and environmental variables (including nutrients) were sampled monthly in an urban lake (four littoral and one limnetic st...
1 CitationsSource
#1Gisela Mayora (CONICET: National Scientific and Technical Research Council)H-Index: 5
#2B. Schneider (CONICET: National Scientific and Technical Research Council)H-Index: 1
Last. A. Rossi (CONICET: National Scientific and Technical Research Council)H-Index: 1
view all 3 authors...
1 CitationsSource
Two anthelmintic macrocyclic lactones—ivermectin and moxidectin—have revolutionized parasite control in cattle. These drugs are only partly metabolized by livestock, and the main route of excretion is via feces. In seasonally inundated floodplains, cattle feces come into direct contact with surface water. Important differences in pharmacokinetics and pharmacodynamics between these drugs may bear on their ecotoxicology in aquatic ecosystems. Moxidectin strongly binds to organic matter and thereby...
3 CitationsSource
#1Diego Frau (CONICET: National Scientific and Technical Research Council)H-Index: 5
#2Paula de Tezanos Pinto (Facultad de Ciencias Exactas y Naturales)H-Index: 9
Last. Gisela Mayora (CONICET: National Scientific and Technical Research Council)H-Index: 5
view all 3 authors...
In this study we analyzed if cyanobacteria total, specific and trait abundance are regulated by the same environmental variables in a Neotropical urban lake that recurrently suffers harmful cyanobacteria blooms. To assess the predictor variables for cyanobacteria total and species density we performed a multiple regression (GLM) and a redundancy analysis (RDA), respectively. Temperature and oxygen were the main predictor variables for both total and species abundance. Conductivity was an exclusi...
4 CitationsSource
12