Ecological risk of mercury in bottom sediments and spatial correlation with land use in Neotropical savanna floodplain lakes, Araguaia River, Central Brazil

LC Monteiro, LCG Vieira, JVE Bernardi… - Environmental …, 2023 - Elsevier
Abstract The Araguaia River floodplain is an important biogeographic boundary between the
two largest South American biomes: the Cerrado (Brazilian Savanna) and the Amazon …

Seasonal dynamics of the fish assemblage in a floodplain lake at the confluence of the Negro and Amazon Rivers

CP Röpke, SA Amadio, KO Winemiller… - Journal of Fish …, 2016 - Wiley Online Library
The temporal effect of discharge and limnology on fish composition and species diversity in
a floodplain lake at the confluence of the Amazon and Negro Rivers was evaluated. Species …

Effects of climate‐driven hydrological changes in the reproduction of Amazonian floodplain fishes

C Röpke, THS Pires, N Zuchi, J Zuanon… - Journal of Applied …, 2022 - Wiley Online Library
Abnormal hydroclimatic years in the Amazon have been increasingly frequent in the last two
decades, creating more prolonged droughts and severe floods. These events are expected …

Suspended sediment, nutrients, and chlorophyll in tropical floodplain lakes with different patterns of hydrological connectivity

MM Castillo - Limnologica, 2020 - Elsevier
The ecological functioning of floodplain lakes is largely influenced by the interaction with the
river mainstem. In this study, seasonal variation in water chemistry and the relationship with …

Are Amazonian fish more sensitive to ammonia? Toxicity of ammonia to eleven native species

LR Souza-Bastos, AL Val, CM Wood - Hydrobiologia, 2017 - Springer
Little is known about the tolerance of Amazonian fish to ammonia. However, elevated
ammonia of anthropogenic origin may now occur. As Amazonian fish evolved in waters …

Do fish isotopic niches change in an Amazon floodplain lake over the hydrological regime?

LS Azevedo, IA Pestana, MG Almeida… - … of Freshwater Fish, 2022 - Wiley Online Library
Floodplain lakes are ecosystems characterised by annual flood and dry cycles. Fish ecology
is influenced by the flood pulse due to the large influx of allochthonous food resources and …

Hydrological and climate intensification induces conservative behavior in the Hydrochorea corymbosa xylem production in a Central Amazon floodplain forest

PA de Sá, J Schöngart, F Wittmann… - Frontiers in Ecology …, 2024 - frontiersin.org
Introduction Trees from flooded forests have to adjust their xylem hydraulic structure to face
the annual flooding and the climatic conditions of the atmosphere. Usually, this adjustment …

Flood-pulse and trophic position modulate mercury concentrations in fishes from an Amazon floodplain lake

T de Castro Paiva, EP Dary, IA Pestana… - Environmental …, 2022 - Elsevier
Mercury (Hg) bioaccumulation can be influenced by biological characteristics (eg, trophic
position) and environmental changes (eg, seasonal flood-pulse), as it can create site …

Mercury concentration in six fish guilds from a floodplain lake in western Amazonia: interaction between seasonality and feeding habits

LS Azevedo, IA Pestana, AF da Costa Nery… - Ecological …, 2020 - Elsevier
Floodplain systems are widespread in the Amazon and several studies have evaluated
mercury biogeochemistry in these systems. The Amazon region can be considered a …

Reproductive allocation by Amazon fishes in relation to feeding strategy and hydrology

CP Röpke, THS Pires, KO Winemiller, D de Fex Wolf… - Hydrobiologia, 2019 - Springer
Seasonal environments favor the evolution of capital breeding, whereby reproduction uses
surplus energy from resources acquired during an earlier period. Consequently …