Results 141 to 150 of about 76,235 (230)

Potencialidade agrícola das terras da Amazônia Ocidental.

, 1979
Amazônia. Descrição geral da área. Geomorfologia. Hidrologia. Clima. Vegetação. Agricultura. Pecuária. Extrativismo vegetal. Extrativismo mineral. Vias de transporte. Descrição das unidades de solo. Relação dos perfis de solos.
MORAES, E. de, TEIXEIRO, L. B., MELO, L. A. S.   +2 more
core  

The Franciscana (Pontoporia blainvillei) in the Northern Limit of the FMA II: Strandings and Habitat Use in Ilha Grande Bay

Marine Mammal Science, Volume 42, Issue 3, July 2026.
ABSTRACT The presence of the franciscana (Pontoporia blainvillei) at the northern limit of the FMA II was investigated using a range of methods, including monitoring of strandings, boat surveys, and passive acoustic monitoring (PAM). Franciscana strandings were recorded within the distributional gap between Macaé (22°55′ S) and Ilha Grande (23°09′ S ...
Alexandre F. Azevedo, Rafael R. Carvalho, Karina S. Pereira, Lis Bittencourt, Elitieri B. Santos‐Neto, Lara V. Pereira, Beatriz A. Santos, Gian Berardinelli, Haydée A. Cunha, Tatiana L. Bisi, José Lailson‐Brito Jr.   +10 more
wiley   +1 more source

Tree stem methane emissions are regulated by site‐level biogeochemistry over species identity in Amazon floodplain forests

New Phytologist, Volume 251, Issue 1, Page 179-190, July 2026.
Summary Tree stems in Amazonian floodplains emit substantial methane (CH4), yet controls on emission variability remain unclear. Emissions span orders of magnitude between várzea (nutrient‐rich) and igapó (nutrient‐poor) forests and among trees, suggesting controls beyond flooding.
Holly R. Blincow, Niall P. McNamara, Dafydd M. O. Elias, Carla Gomez, Jack Lamb, Rodrigo Nunes de Sousa, Darlene Gris, Leonardo Pequeno Reis, Alison M. Hoyt, Sunitha Rao Pangala   +9 more
wiley   +1 more source

Reduced Distinctiveness of Extreme El Niño Teleconnections in Warmer Climates

Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract In today's climate, extreme El Niño events (e.g., 1982–1983, 1997–1998) generate stronger and eastward‐shifted teleconnections relative to moderate El Niño and La Niña events, leading to distinct North American impacts such as enhanced rainfall over California and warming over northeastern North America.
Margot Beniche, Jérôme Vialard, Andréa S. Taschetto, Matthieu Lengaigne   +3 more
wiley   +1 more source

Buoyancy Flux and Its Environmental Modulation in the Vertical Development of Shallow Cumulus in the Central Amazon

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 11, 16 June 2026.
Abstract This study investigates the vertical development of shallow cumulus (ShCu) clouds in the Central Amazon (CAMZ) by combining large‐eddy simulations (LES) with observational data from the GoAmazon2014/5 campaign. Analyses of turbulent kinetic energy budgets, updraft mass flux, moisture flux, and surface fluxes across cloud sizes indicate that ...
Silvio N. Figueroa, Jhonatan A. A. Manco, Georgios A. Efstathiou   +2 more
wiley   +1 more source

Impacts of Deforestation‐Driven Rainfall Reductions on Amazonia Forest Stability

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract The stability of Amazonian vegetation is strongly influenced by land–atmosphere feedbacks. It has been hypothesized that deforestation‐induced precipitation decline may lead to widespread forest decline across the entire basin. Using a moisture‐tracking model, we quantify how deforestation across South America alters downwind rainfall and ...
Luís Gustavo Cattelan, Marina Hirota, Jessica C. A. Baker, Jefferson Gonçalves De Souza, Ana Paula Dutra Aguiar, Tainá Oliveira Assis, Chris Huntingford, Eddy Robertson, Stephen Sitch, Emanuel Gloor   +9 more
wiley   +1 more source

Effects of land management on soil carbon storage in the Brazilian Amazon

Agrosystems, Geosciences &Environment, Volume 9, Issue 2, June 2026.
Abstract This study assessed the influence of land use on soil physical and chemical properties and evaluated machine learning (ML) models for predicting soil organic carbon (SOC) content and stocks in the top 0–30 cm layer across selected sites in the Brazilian Amazon. A total of 649 georeferenced samples of surface soil were analyzed for soil texture,
Gizachew Ayalew Tiruneh, Ciro Abbud Righi, Jefferson Lordello Polizel, Vinicius Gonçalves, Carlos Rodrigues Pereira   +4 more
wiley   +1 more source

First record of Forcipomyia (Forcipomyia) pinamarensis Spinelli, 1983 (Diptera, Ceratopogonidae, Forcipomyiinae, Forcipomyiini) from Colombia. [PDF]

Biodivers Data J
Gamboa J, Hoyos J, Martínez-Viuche E, Duran-Bautista EH, Serna F.   +4 more
europepmc   +1 more source

Compositional Characterization, Quality Parameters, and Physicochemical and Bioactive Properties of Pequi ( Caryocar brasiliense ) Oils From Xingu and Cerrado in Mato Grosso, Brazil

Journal of the American Oil Chemists' Society, Volume 103, Issue 6, Page 609-622, June 2026.
Cerrado oil is richer in MUFA and antioxidant compounds, while Xingu oil shows higher SFA and enhanced oxidative stability, reinforcing the potential of pequi oil as a sustainable bioactive ingredient. ABSTRACT Pequi ( Caryocar brasiliense ) is a native fruit widely distributed in Brazilian biomes, specially in Cerrado, known for its high oil yield and
Dhayna O. Sobral, Patrícia T. Souza, Gabriel S. L. Pereira, Sara Fraga, Maria E. O. Carvalho, Antonio J. A. Meirelles, Eduardo A. C. Batista, Klicia A. Sampaio, Guilherme J. Maximo   +8 more
wiley   +1 more source

Mid-late Pleistocene evolution of fluvial landscapes in Central Amazonia: Shaping ecosystems and areas of endemism. [PDF]

Sci Adv
Galeazzi CP, Almeida RP, Mazoca CEE, Janikian L, Sawakuchi AO, Figueiredo FT, Ribas CC, Wittmann F, Pupim FN.   +8 more
europepmc   +1 more source