Results 101 to 110 of about 5,796 (216)

Relation between environmental variables and the fish community structure in streams of das Mortes and Xingu river basins – MT, Brazil [PDF]

open access: yesBiotemas, 2013
Environmental variables may determine and structure the composition of fish fauna. Studies comparing differences between physical and chemical variables of water between close river basins are few.
Priscylla Rodrigues Matos   +2 more
doaj  

The importance of forest structure for carbon fluxes of the Amazon rainforest

open access: yesEnvironmental Research Letters, 2018
Precise descriptions of forest productivity, biomass, and structure are essential for understanding ecosystem responses to climatic and anthropogenic changes. However, relations between these components are complex, in particular for tropical forests. We
Edna Rödig   +5 more
doaj   +1 more source

Morphological Characteristics of Tropical Precipitation Features Producing Extreme Instantaneous Rain Rates in GPM and DYAMOND Global Storm Resolving Models

open access: yesGeophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract The influence of the spatial organization of tropical convection on the production of extreme instantaneous localized tropical rain rates remains poorly constrained, both in observations and in models. Using retrievals from the Ku‐band radar onboard the GPM satellite, we identify tropical precipitation features (PFs) and quantify their ...
Pedro Angulo‐Umana   +3 more
wiley   +1 more source

The Growing Role of Evaporative Demand in Driving Record‐Breaking Droughts in the Amazon Basin

open access: yesGeophysical Research Letters, Volume 53, Issue 19, 16 October 2026.
Abstract Amazon droughts have historically been driven by precipitation deficits, but recent escalating drought events highlight a regime shift toward “hot droughts.” By decomposing historical drought drivers (1979–2024), we show that rising evaporative demand (represented by potential evapotranspiration, PET) now acts as a primary driver of drought ...
Yizhou Zhuang   +3 more
wiley   +1 more source

Seasonal and Regional Variation of the Chemical Composition and Antimicrobial Activity of Essential Oils From Piper marginatum Jacq.

open access: yesChemistry &Biodiversity, Volume 23, Issue 10, October 2026.
Evaluating Piper marginatum essential oils across three Brazilian biomes reveals significant chemical and antimicrobial variations driven by seasonal and regional factors. Sixty compounds are identified, including a novel (Z)‐phenylpropanoid reported for the first time. Multivariate analysis correlates environmental stressors with specialized metabolic
Rebeca Gabriel de Camargo   +7 more
wiley   +1 more source

Bias Correction of ERA5 Temperature Across Five Topoclimatic Clusters: A Comparative Evaluation of Four Methods

open access: yesInternational Journal of Climatology, Volume 46, Issue 12, October 2026.
ERA5 near‐surface temperature over South America exhibits systematic cold biases in daily maximum temperature and warm biases in daily minimum temperature. To address the continent's strong climatic and topographic heterogeneity, South America was partitioned into five topoclimatic clusters, and four bias‐correction approaches were evaluated. The Multi‐
José Roberto Rozante, Gabriela Rozante
wiley   +1 more source

A Zonal‐Meridional Projection Method for Quantifying Global Land‐Ocean Moisture Transport

open access: yesInternational Journal of Climatology, Volume 46, Issue 12, October 2026.
We present a physically consistent and computationally efficient method to quantify global coastal moisture transport by projecting vertically integrated moisture flux onto signed land–ocean boundary segments. The signed projection naturally distinguishes ocean‐to‐land inflow and land‐to‐ocean outflow without explicit directional classification ...
Chong Zhang   +2 more
wiley   +1 more source

Bauhinia naniflora: a new species of section Amaria (Cercidoideae: Leguminosae) from Colombia

open access: yesNordic Journal of Botany, Volume 2026, Issue 10, October 2026.
Bauhinia, the most species‐rich genus of Cercidoideae (Leguminosae), is pantropically distributed and includes four sections in the Americas. During an ongoing taxonomic revision of American Cercidoideae, a new species of Bauhinia sect. Amaria ser. Decandrae currently endemic to Colombia was identified and is here described as Bauhinia naniflorasp nov.
Luis Carlos Casas‐Restrepo   +4 more
wiley   +1 more source

Participatory mapping and Nature's Contributions to People: Insights from the Amazon Delta

open access: yesPeople and Nature, Volume 8, Issue 10, Page 3618-3632, October 2026.
Abstract Understanding how traditional and coastal communities perceive and interact with nature is key to promoting inclusive conservation. This article examines human–nature interaction in the fishing village of Jubim, located in the Marajó Archipelago, delta of the Amazon River, Brazil.
Lara Sartorio Gonçalves   +5 more
wiley   +1 more source

Modeling Carbon Emissions Driven by Land‐Use Change: Uncertainty and Sensitivity Analysis of Dynamic Global Vegetation Models

open access: yesGlobal Biogeochemical Cycles, Volume 40, Issue 10, October 2026.
Abstract As a key component of the climate system, terrestrial carbon dynamics are commonly simulated using Dynamic Global Vegetation Models (DGVMs), which provide essential information for estimating the global carbon budget. However, substantial uncertainties persist in DGVM‐based estimates of land‐use change carbon emissions, and their process‐level
Jianyong Dong   +4 more
wiley   +1 more source

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