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View article: RELATIONSHIP BETWEEN CHLOROPHYLL-A CONCENTRATION AND CYANOBACTERIA CELL DENSITY IN SÃO PAULO RESERVOIRS: A STATISTICAL AND REMOTE SENSING APPROACH
RELATIONSHIP BETWEEN CHLOROPHYLL-A CONCENTRATION AND CYANOBACTERIA CELL DENSITY IN SÃO PAULO RESERVOIRS: A STATISTICAL AND REMOTE SENSING APPROACH Open
Cyanobacterial blooms pose a significant threat to the quality and availability of water in São Paulo’s public supply reservoirs. These organisms hold medical importance, and their monitoring is mandatory and regulated by specific legislat…
View article: A straightforward protocol for extracting microplastics from freshwater sediment with high organic content
A straightforward protocol for extracting microplastics from freshwater sediment with high organic content Open
Extracting microplastics from sediment is critical in assessing pollution in freshwater environments. However, this process can be particularly challenging for clayey sediments with a significant organic matter content. This study proposes…
View article: The Toxicity of Poly(acrylonitrile-styrene–butadiene) Microplastics toward <i>Hyalella azteca</i> Is Associated with Biofragmentation and Oxidative Stress
The Toxicity of Poly(acrylonitrile-styrene–butadiene) Microplastics toward <i>Hyalella azteca</i> Is Associated with Biofragmentation and Oxidative Stress Open
Acrylonitrile-butadiene-styrene (ABS) is a thermoplastic copolymer commonly used in the electronics, automotive, and construction industries. In the aquatic environment, the formation of microplastics from larger-sized plastic waste occurs…
View article: Driving factors of phytoplankton Reynolds functional groups (RFGs) in a subtropical reservoir (São Paulo, Brazil)
Driving factors of phytoplankton Reynolds functional groups (RFGs) in a subtropical reservoir (São Paulo, Brazil) Open
Subtropical reservoirs are susceptible to the eutrophication process, largely due to inappropriate land use and occupation in the watersheds, resulting in changes in the composition of the phytoplankton community, according to the sensitiv…
View article: Effect of chlorophyll concentration on the spectral signature of the microalgae Chlorella vulgaris and Raphidocelis subcapitata
Effect of chlorophyll concentration on the spectral signature of the microalgae Chlorella vulgaris and Raphidocelis subcapitata Open
Water is the most important substance in nature and all known life forms on the planet depend on it. Among aquatic species, microalgae and cyanobacteria stand out as indicators of their quality, as their increase can be harmful for human c…
View article: Understanding the microplastic pollution impact on <i>Chironomus sancticaroli</i> larvae development and emergence
Understanding the microplastic pollution impact on <i>Chironomus sancticaroli</i> larvae development and emergence Open
Plastic materials are increasingly present in our lives. It is estimated that more than 360 million tonnes of plastics are produced annually worldwide. Particularly, single-use plastics represent an important segment in plastic production.…
View article: The effects of natural forest and eucalyptus plantations on seven water-related ecosystem services in Cerrado landscapes
The effects of natural forest and eucalyptus plantations on seven water-related ecosystem services in Cerrado landscapes Open
It is imperative that decision-makers recognize when the intensity of human interference in regard to forest losses may result in adverse conditions for water ecosystem services. Several studies have indicated that defining thresholds is a…
View article: Biological responses of Chironomus sancticaroli to exposure to naturally aged PP microplastics under realistic concentrations
Biological responses of Chironomus sancticaroli to exposure to naturally aged PP microplastics under realistic concentrations Open
Microplastic (MP) is yet another form of chronic anthropogenic contribution to the environment. MP are plastic particles (< 5 mm) that have been widely found in the most diverse natural environments, but their real impacts on ecosystems ar…
View article: Realistic environmental exposure to secondary PET microplastics induces biochemical responses in freshwater amphipod Hyalella azteca
Realistic environmental exposure to secondary PET microplastics induces biochemical responses in freshwater amphipod Hyalella azteca Open
Aquatic environments are especially susceptible to microplastic contamination. This is mainly because these water bodies serve as a transport route for these particles from the terrestrial environment until they reach the oceans. Also, the…
View article: Water Quality Assessment Using Sentinel-2 Imagery Estimating Chlorophyll A, Secchi Disk Depth, and Cyanobacteria Cell Number in Brazilian Reservoirs
Water Quality Assessment Using Sentinel-2 Imagery Estimating Chlorophyll A, Secchi Disk Depth, and Cyanobacteria Cell Number in Brazilian Reservoirs Open
Satellite images were used to assess surface water quality based on the concentration of chlorophyll a (chla), light penetration measured by the Secchi disk method (SD), and the Cyanobacteria cells number per mL (cyano). Nine reservoirs ar…
View article: The Problem of Cyanotoxins in Reservoirs of São Paulo State, Brazil
The Problem of Cyanotoxins in Reservoirs of São Paulo State, Brazil Open
Eutrophication process and phytoplankton primary productivity have intensified in continental aquatic ecosystems because of climate change. As a consequence, the proliferation of potentially toxic cyanobacteria is increasing in frequency, …
View article: Testing in Tropical Reservoirs a Remote Sensing Phycocyanin Empirical Model Performed for Temperate Reservoirs: Ahead of Climate Change
Testing in Tropical Reservoirs a Remote Sensing Phycocyanin Empirical Model Performed for Temperate Reservoirs: Ahead of Climate Change Open
Remote sensing is a tool that is being used increasingly often for both terrestrial and aquatic ecology. For inland waters, most works focus on developing an empirical or analytical model to estimate optical active variables related to wat…
View article: Ceratium furcoides (Levander) Langhans in reservoirs at the Ebro watershed, Spain and Sao Paulo state, Brazil
Ceratium furcoides (Levander) Langhans in reservoirs at the Ebro watershed, Spain and Sao Paulo state, Brazil Open
This study compares the morphological characteristics of the dinoflagellate Ceratium furcoides from three Ebro basin reser¬voirs (Spain) and from six reservoirs at São Paulo state (Brazil) with the aim to identify the distinct morphotypes …
View article: Connections among Land Use, Water Quality, Biodiversity of Aquatic Invertebrates, and Fish Behavior in Amazon Rivers
Connections among Land Use, Water Quality, Biodiversity of Aquatic Invertebrates, and Fish Behavior in Amazon Rivers Open
Rivers in the Amazon have among the greatest biodiversity in the world. The Xingu River, one of the tributaries of the Amazon River, has a length of 1640 km, draining 510,000 km2 in one of the most protected regions on the planet. The Midd…
View article: Dataset for: Stress response, immunity, and organs mass in toads (Rhinella diptycha) living in metal contaminated areas
Dataset for: Stress response, immunity, and organs mass in toads (Rhinella diptycha) living in metal contaminated areas Open
This data set refers to blood and organs collected from toads (Rhinella diptycha), and water and sediment from Doce River in January 2018.
View article: Taquacetuba Compartment of Billings Reservoir (SP, Brazil): differential influence of the main water body and tributaries in the water quality
Taquacetuba Compartment of Billings Reservoir (SP, Brazil): differential influence of the main water body and tributaries in the water quality Open
Aim This research evaluated the water quality of the Taquacetuba Compartment, Billings Reservoir (Brazil), through analyzes of water quality data. The Taquacetuba Compartment has multiple uses such as public water supply and professional f…
View article: Corrigendum: Higher Abundance of Sediment Methanogens and Methanotrophs Do Not Predict the Atmospheric Methane and Carbon Dioxide Flows in Eutrophic Tropical Freshwater Reservoirs
Corrigendum: Higher Abundance of Sediment Methanogens and Methanotrophs Do Not Predict the Atmospheric Methane and Carbon Dioxide Flows in Eutrophic Tropical Freshwater Reservoirs Open
[This corrects the article DOI: 10.3389/fmicb.2021.647921.].
View article: Aerial Biomass and Nitrogen Estimation of Emerged and Floating Macrophytes using Optical Remote Sensing: A Non-Destructive Method
Aerial Biomass and Nitrogen Estimation of Emerged and Floating Macrophytes using Optical Remote Sensing: A Non-Destructive Method Open
Freshwater resources faces threats with aquatic plants invasion, considered biological pollution with deep effects on water quality and nutrients cycling due to their rapid growth. Orbital remote sensing has been an effective instrument of…
View article: Higher Abundance of Sediment Methanogens and Methanotrophs Do Not Predict the Atmospheric Methane and Carbon Dioxide Flows in Eutrophic Tropical Freshwater Reservoirs
Higher Abundance of Sediment Methanogens and Methanotrophs Do Not Predict the Atmospheric Methane and Carbon Dioxide Flows in Eutrophic Tropical Freshwater Reservoirs Open
Freshwater reservoirs emit greenhouse gases (GHGs) such as methane (CH 4 ) and carbon dioxide (CO 2 ), contributing to global warming, mainly when impacted by untreated sewage and other anthropogenic sources. These gases can be produced by…
View article: Land use, spatial heterogeneity of organic matter, granulometric fractions and metal complexation in reservoir sediments
Land use, spatial heterogeneity of organic matter, granulometric fractions and metal complexation in reservoir sediments Open
Aim This study aimed to evaluate land use, distribution of particle size fractions, organic matter (OM) and perform a metal quantification liable to complexation in the Itupararanga Reservoir (São Paulo, Brazil). This aquatic ecosystem is …
View article: Determination of the Trophic State Index (TSI) using remote sensing, bathymetric survey and empirical data in a tropical reservoir
Determination of the Trophic State Index (TSI) using remote sensing, bathymetric survey and empirical data in a tropical reservoir Open
Determination of the Trophic State Index (TSI) using remote sensing, bathymetric survey and empirical data in a tropical reservoirThe reservoirs are important freshwater reserves that suffer with domestic and industrial wastes, causing qua…
View article: Self‐Organizing Maps for Evaluation of Biogeochemical Processes and Temporal Variations in Water Quality of Subtropical Reservoirs
Self‐Organizing Maps for Evaluation of Biogeochemical Processes and Temporal Variations in Water Quality of Subtropical Reservoirs Open
Water quality in reservoirs is often compromised in many regions worldwide by nutrients and trace metals. This demands continuous monitoring; however, analyses of large data sets collected during regular monitoring remain a difficult task.…
View article: Phytoplankton, Trophic State and Ecological Potential in reservoirs in the State of São Paulo, Brazil
Phytoplankton, Trophic State and Ecological Potential in reservoirs in the State of São Paulo, Brazil Open
This study evaluated the ecological potential of reservoirs in the Brazilian state of São Paulo, having phytoplankton as a biological quality element. Integrated water column sampling was carried out in the dam, and in the intermediate and…