Results 11 to 20 of about 232,101 (213)

Increased floodplain inundation in the Amazon since 1980 [PDF]

open access: yesEnvironmental Research Letters, 2023
Extensive floodplains throughout the Amazon basin support important ecosystem services and influence global water and carbon cycles. A recent change in the hydroclimatic regime of the region, with increased rainfall in the northern portions of the basin,
Ayan S Fleischmann   +16 more
doaj   +5 more sources

Phenotypic, physicochemical, sensory, and functional attributes of cocoa (Theobroma cacao L.) from Brazilian Amazonian floodplain and upland ecosystems. [PDF]

open access: yesJ Sci Food Agric
Abstract BACKGROUND Cocoa (Theobroma cacao L.) from the Brazilian Amazon plays an important role in national production. While most cocoa is cultivated in upland systems, floodplain ecosystems represent a traditional and distinct production environment that may influence bean composition and quality.
Silva DAE   +6 more
europepmc   +2 more sources

Seasonality and assemblages of non-passeriform waterbirds in várzea lakes on the lower Amazonas River, Santarém, Pará, Brazil [PDF]

open access: yesAnais da Academia Brasileira de Ciências, 2023
Amazonian várzeas are annually flooded for at least five months, which influences the occurence of waterbirds. This study investigates the species richness and composition, and individual abundance of waterbird assemblages in 10 várzea lakes on the lower
DANILO AUGUSTO ALMEIDA-SANTOS   +2 more
doaj   +1 more source

Modeling surface water dynamics in the Amazon Basin using MOSART-Inundation v1.0: impacts of geomorphological parameters and river flow representation [PDF]

open access: yesGeoscientific Model Development, 2017
In the Amazon Basin, floodplain inundation is a key component of surface water dynamics and plays an important role in water, energy and carbon cycles. The Model for Scale Adaptive River Transport (MOSART) was extended with a macroscale inundation scheme
X. Luo   +6 more
doaj   +1 more source

Reconstructing historical forest cover change in the Lower Amazon floodplains using the LandTrendr algorithm [PDF]

open access: yesActa Amazonica, 2016
The Amazon várzeas are an important component of the Amazon biome, but anthropic and climatic impacts have been leading to forest loss and interruption of essential ecosystem functions and services.
Everton Hafemann FRAGAL   +2 more
doaj   +1 more source

Eternal vigilance on an Amazon floodplain [PDF]

open access: yesCurrent Biology, 2002
Deep and puzzling evolutionary questions are still being raised by the unfashionable work of systematic biologists. James S. Albert describes some such work and argues why we need much more of it in the face of unprecedented loss of species through human activity.
openaire   +2 more sources

Methane emissions from floodplains in the Amazon Basin: challenges in developing a process-based model for global applications [PDF]

open access: yesBiogeosciences, 2014
Tropical wetlands are estimated to represent about 50% of the natural wetland methane (CH4) emissions and explain a large fraction of the observed CH4 variability on timescales ranging from glacial–interglacial cycles to the currently observed year-to ...
B. Ringeval   +6 more
doaj   +1 more source

Multispecies Fisheries in the Lower Amazon River and Its Relationship with the Regional and Global Climate Variability.

open access: yesPLoS ONE, 2016
This paper aims to describe the spatial-temporal variability in catch of the main fishery resources of the Amazon River and floodplain lakes of the Lower Amazon, as well as relating the Catch per Unit of Effort with anomalies of some of the Amazon River,
Walter Hugo Diaz Pinaya   +5 more
doaj   +1 more source

Richness, abundance and microhabitat use by Ardeidae (Aves: Pelecaniformes) during one seasonal cycle in the floodplain lakesof the lower Amazon River [PDF]

open access: yesZoologia (Curitiba), 2019
The Amazon floodplains become periodically submerged as result of seasonal changes in the water levels throughout the year. These changes influence the availability of microhabitats and consequently the abundance of organisms in these ecosystems. In this
Giulianne Sampaio Ferreira   +2 more
doaj   +3 more sources

Historic carbon burial spike in an Amazon floodplain lake linked to riparian deforestation near Santarém, Brazil [PDF]

open access: yesBiogeosciences, 2018
Forests along the Amazon Basin produce significant quantities of organic material, a portion of which is deposited in floodplain lakes. Deforestation in the watershed may then have potentially important effects on the carbon fluxes.
L. M. Sanders   +9 more
doaj   +1 more source

Home - About - Disclaimer - Privacy