André Megali Amado
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View article: Early signs of eutrophication in one of the few remaining oligotrophic lakes in northeastern Brazil: insights from Bonfim lake
Early signs of eutrophication in one of the few remaining oligotrophic lakes in northeastern Brazil: insights from Bonfim lake Open
The increasing demand for water supply, combined with poor land management around freshwater bodies, has threatened aquatic ecosystems. The Bonfim lake, located in the south of the municipality of Natal (RN, Brazil), is a coastal lake that…
View article: Linking Land Use, Seasonal Variation and Water Quality Through Dissolved Organic Matter Optical Properties in the Doce River Basin
Linking Land Use, Seasonal Variation and Water Quality Through Dissolved Organic Matter Optical Properties in the Doce River Basin Open
Human activities such as agriculture, mining and urbanization have profoundly altered tropical river systems, yet conventional water quality indicators often fail to fully capture these impacts, especially in turbid waters. In the Doce Riv…
View article: Ecological processes shaping marine microbial assemblages diverge between equatorial and temperate time-series
Ecological processes shaping marine microbial assemblages diverge between equatorial and temperate time-series Open
Marine microbial communities are structured by a complex interplay of deterministic and stochastic processes, yet how these vary across latitudes remains poorly understood. Most long-term microbial observatories are restricted to temperate…
View article: Preface: Emergent issues of Neotropical aquatic ecosystems in the Anthropocene
Preface: Emergent issues of Neotropical aquatic ecosystems in the Anthropocene Open
View article: Ecosystem Size Drives Patterns and Control Mechanisms of Mixotrophs Success Across Tropical Lakes: A Large-Scale Assessment of the Grand Écart Hypothesis
Ecosystem Size Drives Patterns and Control Mechanisms of Mixotrophs Success Across Tropical Lakes: A Large-Scale Assessment of the Grand Écart Hypothesis Open
Mixotrophy, a physiological trait combining autotrophy and heterotrophy in one organism, significantly contributes to energy and matter transfer in aquatic ecosystems. However, understanding how environmental factors influence mixoplankton…
View article: Photochemical mineralization of DOM in high humic tropical aquatic ecosystems: ambiguous regulation by watercolor
Photochemical mineralization of DOM in high humic tropical aquatic ecosystems: ambiguous regulation by watercolor Open
Aim Photochemical mineralization is a significant pathway for the total oxidation of Dissolved Organic Carbon (DOC) in aquatic ecosystems. The concentration of DOC, watercolor, solar radiation intensity, diagenetic state of DOC, and oxygen…
View article: Linking Land Use, Seasonal Variation, and Water Quality Through Dom Optical Properties in the Doce River Basin
Linking Land Use, Seasonal Variation, and Water Quality Through Dom Optical Properties in the Doce River Basin Open
View article: Linking Land Use, Seasonal Variation, and Water Quality Through Dom Optical Properties in the Doce River Basin
Linking Land Use, Seasonal Variation, and Water Quality Through Dom Optical Properties in the Doce River Basin Open
View article: Dimensões Ecológicas, Geológicas e Humanas em Estudos de Longa-Duração no Parque Nacional da Restinga de Jurubatiba, Rio de Janeiro.
Dimensões Ecológicas, Geológicas e Humanas em Estudos de Longa-Duração no Parque Nacional da Restinga de Jurubatiba, Rio de Janeiro. Open
A dimensão temporal de processos ecológicos e evolutivos geralmente não é a mesma de teses, editais de fomento a pesquisas, ou de vidas humanas. Com o intuito de monitorar e compreender mudanças ambientais em longas escalas temporais ao re…
View article: Temporal patterns of picoplankton abundance and metabolism on the western coast of the equatorial Atlantic Ocean
Temporal patterns of picoplankton abundance and metabolism on the western coast of the equatorial Atlantic Ocean Open
Picoplankton are central global carbon (C) cycling players and often dominate the ocean plankton communities, especially in low latitudes. Therefore, evaluating picoplankton temporal dynamics is critical to understanding microbial stocks a…
View article: Optical Dissolved Organic Matter Properties as Important Water Quality Indicators of a Tropical River Under Several Anthropic Impacts
Optical Dissolved Organic Matter Properties as Important Water Quality Indicators of a Tropical River Under Several Anthropic Impacts Open
View article: HUMAN IMPACTS ON AQUATIC ECOSYSTEMS FROM THE LENS OF ECOLOGICAL STOICHIOMETRY
HUMAN IMPACTS ON AQUATIC ECOSYSTEMS FROM THE LENS OF ECOLOGICAL STOICHIOMETRY Open
Aquatic ecosystems are under different anthropogenic pressures, such as climate change, eutrophication, chemical pollution, overfishing, and introducing exotic species. Human activities have accelerated biogeochemical cycles forcing organi…
View article: Cross-continental importance of CH4 emissions from dry inland-waters
Cross-continental importance of CH4 emissions from dry inland-waters Open
Dry inland waters are hotspots of C emission to the atmosphere. CH4 contributed 10–21% to total C emissions (in CO2-eq) of dry inland waters. The contribution of CH4 (total C emissions) did not differ between types of systems. Globally, dr…
View article: Responses of Phytoplanktonic Chlorophyll-a Composition to Inorganic Turbidity Caused by Mine Tailings
Responses of Phytoplanktonic Chlorophyll-a Composition to Inorganic Turbidity Caused by Mine Tailings Open
Inorganic turbidity can limit light penetration in water and reduce phytoplankton photosynthesis. Anthropogenic activities such as mining can produce or augment the amount of suspended inorganic particles in water. Recent mining disasters …
View article: Relief of Phosphate Limitation Stimulates Methane Oxidation
Relief of Phosphate Limitation Stimulates Methane Oxidation Open
Aquatic ecosystems such as shallow lakes and wetlands are important emitters of the greenhouse gas methane (CH 4 ). Increased phosphorus (P) loading is expected to increase CH 4 production in these ecosystems. This increased CH 4 productio…
View article: Cross-continental importance of CH4 emissions from dry inland-waters
Cross-continental importance of CH4 emissions from dry inland-waters Open
Dry inland waters are hotspots of C emission to the atmosphere. CH4 contributed 10–21% to total C emissions (in CO2-eq) of dry inland waters. The contribution of CH4 (total C emissions) did not differ between types of systems. Globally, dr…
View article: Turning Water Abundance Into Sustainability in Brazil
Turning Water Abundance Into Sustainability in Brazil Open
Brazil is a powerhouse in terms of water resources, which are instrumental to the country’s transition to sustainability. However, to realize this potential, substantial management and conservation hurdles must first be overcome. We propos…
View article: Cross-continental importance of CH4 emissions from dry inland-waters
Cross-continental importance of CH4 emissions from dry inland-waters Open
View article: Global CO2 emissions from dry inland waters share common drivers across ecosystems
Global CO2 emissions from dry inland waters share common drivers across ecosystems Open
View article: Editorial: Freshwater sustainability and aquatic ecology in a fast-changing world
Editorial: Freshwater sustainability and aquatic ecology in a fast-changing world Open
View article: flowDiv: a new pipeline for analyzing flow cytometric diversity
flowDiv: a new pipeline for analyzing flow cytometric diversity Open
View article: Effects of seasonality, trophic state and landscape properties on CO2 saturation in low-latitude lakes and reservoirs
Effects of seasonality, trophic state and landscape properties on CO2 saturation in low-latitude lakes and reservoirs Open
View article: O monitoramento ambiental como subsídio à gestão de ecossistemas aquáticos costeiros: o exemplo da lagoa Imboassica, RJ, Brasil
O monitoramento ambiental como subsídio à gestão de ecossistemas aquáticos costeiros: o exemplo da lagoa Imboassica, RJ, Brasil Open
Engenharia e ciências ambientais: contribuições à gestão ecossistêmica O monitoramento ambiental pode ser realizado para diversos fins.Por meio dele é possível avaliar tendências, medir efeitos cumulativos de impactos e informar o público …
View article: Water pollution: one of the main Limnology challenges in the Anthropocene
Water pollution: one of the main Limnology challenges in the Anthropocene Open
Humankind is defining a new geological time. The Anthropocene epoch is marked by changes in the geological processes, hydrological regimes, biosphere structure, among other processes, due to human expansion over the landscape worldwide. Bi…
View article: Water pollution: one of the main Limnology challenges in the Anthropocene
Water pollution: one of the main Limnology challenges in the Anthropocene Open
Humankind is defining a new geological time. The Anthropocene epoch is marked by changes in the geological processes, hydrological regimes, biosphere structure, among other processes, due to human expansion over the landscape worldwide. Bi…
View article: flowDiv: a new pipeline for analyzing flow cytometric diversity
flowDiv: a new pipeline for analyzing flow cytometric diversity Open
Flow cytometry (FCM) is a powerful analytical tool that is widely used worldwide, as it allows the depiction of the innate complexity of a vast range of biological systems in few seconds. It is a technique based on the spectroscopic proper…
View article: flowDiv: a new pipeline for analyzing flow cytometric diversity
flowDiv: a new pipeline for analyzing flow cytometric diversity Open
Flow cytometry (FCM) is a powerful analytical tool that is widely used worldwide, as it allows the depiction of the innate complexity of a vast range of biological systems in few seconds. It is a technique based on the spectroscopic proper…
View article: Extreme droughts drive tropical semi-arid eutrophic reservoirs towards CO2 sub-saturation
Extreme droughts drive tropical semi-arid eutrophic reservoirs towards CO2 sub-saturation Open
Aim: This study aimed to evaluate the carbon dioxide (CO2) dynamics in tropical semi-arid reservoirs during a prolonged drought period as well as to test if the trophic state affects the CO2 saturation. Methods This study was performed in …
View article: Extreme droughts drive tropical semi-arid eutrophic reservoirs towards CO2 sub-saturation
Extreme droughts drive tropical semi-arid eutrophic reservoirs towards CO2 sub-saturation Open
Aim: This study aimed to evaluate the carbon dioxide (CO2) dynamics in tropical semi-arid reservoirs during a prolonged drought period as well as to test if the trophic state affects the CO2 saturation. Methods This study was performed in …
View article: Redfield Ratios in Inland Waters: Higher Biological Control of C:N:P Ratios in Tropical Semi-arid High Water Residence Time Lakes
Redfield Ratios in Inland Waters: Higher Biological Control of C:N:P Ratios in Tropical Semi-arid High Water Residence Time Lakes Open
The canonical Redfield C:N:P ratio for algal biomass is often not achieved in inland waters due to higher C and N content and more variability when compared to the oceans. This has been attributed to much lower residence times and higher c…