Results 1 to 10 of about 41,000 (184)

Hierarchical effects of historical and environmental factors on lizard assemblages in the upper Madeira River, Brazilian Amazonia. [PDF]

open access: yesPLoS ONE, 2020
Investigating the role of historical and ecological factors structuring assemblages is relevant to understand mechanisms and processes affecting biodiversity across heterogeneous habitats.
Gabriela Marques Peixoto   +4 more
doaj   +2 more sources

Damming Amazon Rivers: Environmental impacts of hydroelectric dams on Brazil's Madeira River according to local fishers' perception. [PDF]

open access: yesAmbio, 2020
This study aimed to investigate the environmental impacts generated by the hydroelectric complex in the Madeira River, Brazilian Amazon, based on the perceptions of local fishers and fishery database, it focus attention on three main impacts: (i) on local fishery stocks; (ii) in fish fauna and (iii) on the aquatic ecosystems.
Santos RE   +4 more
europepmc   +4 more sources

A new nurse frog of the Allobates tapajos species complex (Anura: Aromobatidae) from the upper Madeira River, Brazilian Amazonia [PDF]

open access: yesPeerJ, 2022
Cryptic diversity is extremely common in widespread Amazonian anurans, but especially in nurse frogs of the genus Allobates. There is an urgent need to formally describe the many distinct but unnamed species, both to enable studies of their basic biology
Miquéias Ferrão   +2 more
doaj   +3 more sources

Crop domestication in the upper Madeira River basin [PDF]

open access: yesBoletim do Museu Paraense Emílio Goeldi. Ciências Humanas, 2016
Most native Amazonian crops were domesticated in the periphery of the basin. The upper Madeira River basin is an important part of this periphery where several important crops were domesticated and others are suspected to have been domesticated or ...
Charles Roland Clement   +7 more
doaj   +4 more sources

MERCURY CONCENTRATION IN MARGIN SOIL OF THE MADEIRA RIVER [PDF]

open access: yesSociedade & Natureza, 2005
The extraction of gold in the Amazon, since 1970, has grown fast from a politic that was resulted in the creation of gold extraction reserves in this region.
Déborah Pereira Linhares   +6 more
doaj   +3 more sources

Chemodiversity of dissolved organic matter in the Amazon Basin [PDF]

open access: yesBiogeosciences, 2016
Regions in the Amazon Basin have been associated with specific biogeochemical processes, but a detailed chemical classification of the abundant and ubiquitous dissolved organic matter (DOM), beyond specific indicator compounds and bulk measurements, has ...
M. Gonsior   +8 more
doaj   +4 more sources

A 35-Year Record (1987–2022) of Hg Concentrations in Two of the Fish Species Most Consumed by People Living in the Upper Madeira River Basin, Brazilian Amazon Region [PDF]

open access: yesToxics
This study presents a 35-year record of total mercury (Hg) concentrations in the detritivore fish Prochilodus nigricans (Curimatã) and the carnivore Cichla pleiozona (Tucunaré), two of the most widely distributed, ecologically important and consumed fish
Luiz Drude de Lacerda   +2 more
doaj   +2 more sources

The commercial fishing fleet using the middle stretch of the Madeira river, Brazil - doi: 10.4025/actascibiolsci.v34i3.8119 [PDF]

open access: yesActa Scientiarum: Biological Sciences, 2012
Fishery resources in the Amazon region are exploited by both industrial and artisanal fishing fleets, that differ in their use of fishing gear and fishing grounds.
Renato Soares Cardoso   +1 more
doaj   +2 more sources

Produção de Madeira de Progênies de Segunda Geração de Grevílea na Região de Avaré, SP [PDF]

open access: yesPesquisa Florestal Brasileira, 2011
A grevílea (Grevillea robusta A. Cunn) é uma espécie utilizada para o sombreamento de cafezais e de outras culturas agrícolas, áreas de pastagens e apicultura, paisagismo e como cortina quebra- ventos.
Emerson Gonçalves Martins   +3 more
doaj   +1 more source

Viewpoint – Brazil’s Madeira River Dams: A Setback for Environmental Policy in Amazonian Development

open access: yesWater Alternatives, 2014
Decisions on hydroelectric dam construction will be critical in shaping the future of Amazonia, where planned dams would convert most tributaries into chains of reservoirs.
Philip Martin Fearnside
doaj   +1 more source

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