Results 11 to 20 of about 155,067 (213)

EVALUATION OF THE IMPACT OF WOOD FOREST MANAGEMENT OPERATIONS ON AMAZON NUT TREES IN FOREST CONCESSION AREAS IN THE AMAZON [PDF]

Revista Árvore
The Amazon rainforest holds has immense biodiversity and offers various possibilities for use. Moreover, there is an increasing need for development models that reconcile the rational use of forest resources with socio-economic development.
Joana Keila da Silva Gomes, Thiago Augusto da Cunha, Lúcia Helena de Oliveira Wadt, Evandro Orfanó Figueiredo   +3 more
doaj   +2 more sources

The drivers and impacts of Amazon forest degradation [PDF]

Science, 2023
Approximately 2.5 × 10 6 square kilometers of the Amazon forest are currently degraded by fire, edge effects, timber extraction, and/or extreme drought, representing 38% of all remaining forests in the region. Carbon emissions from this degradation total up to 0.2 petagrams of carbon per year (Pg C year −
David M. Lapola, Patricia Pinho, Jos Barlow, Luiz E. O. C. Aragão, Erika Berenguer, Rachel Carmenta, Hannah M. Liddy, Hugo Seixas, Camila V. J. Silva, Celso H. L. Silva-Junior, Ane A. C. Alencar, Liana O. Anderson, Dolors Armenteras, Victor Brovkin, Kim Calders, Jeffrey Chambers, Louise Chini, Marcos H. Costa, Bruno L. Faria, Philip M. Fearnside, Joice Ferreira, Luciana Gatti, Victor Hugo Gutierrez-Velez, Zhangang Han, Kathleen Hibbard, Charles Koven, Peter Lawrence, Julia Pongratz, Bruno T. T. Portela, Mark Rounsevell, Alex C. Ruane, Rüdiger Schaldach, Sonaira S. da Silva, Celso von Randow, Wayne S. Walker   +34 more
openaire   +5 more sources

Critical transitions in the Amazon forest system. [PDF]

Nature
AbstractThe possibility that the Amazon forest system could soon reach a tipping point, inducing large-scale collapse, has raised global concern1–3. For 65 million years, Amazonian forests remained relatively resilient to climatic variability. Now, the region is increasingly exposed to unprecedented stress from warming temperatures, extreme droughts ...
Flores BM, Montoya E, Sakschewski B, Nascimento N, Staal A, Betts RA, Levis C, Lapola DM, Esquível-Muelbert A, Jakovac C, Nobre CA, Oliveira RS, Borma LS, Nian D, Boers N, Hecht SB, Ter Steege H, Arieira J, Lucas IL, Berenguer E, Marengo JA, Gatti LV, Mattos CRC, Hirota M.   +23 more
europepmc   +9 more sources

Climate drivers of the Amazon forest greening. [PDF]

PLoS One, 2017
Our limited understanding of the climate controls on tropical forest seasonality is one of the biggest sources of uncertainty in modeling climate change impacts on terrestrial ecosystems. Combining leaf production, litterfall and climate observations from satellite and ground data in the Amazon forest, we show that seasonal variation in leaf production
Wagner FH, Hérault B, Rossi V, Hilker T, Maeda EE, Sanchez A, Lyapustin AI, Galvão LS, Wang Y, Aragão LEOC.   +9 more
europepmc   +7 more sources

The changing Amazon forest [PDF]

Philosophical Transactions of the Royal Society B: Biological Sciences, 2008
Long-term monitoring of distributed, multiple plots is the key to quantify macroecological patterns and changes. Here we examine the evidence for concerted changes in the structure, dynamics and composition of old-growth Amazonian forests in the late twentieth century.
Phillips, OL, Lewis, SL, Baker, TR, Chao, K, Higuchi, N   +4 more
openaire   +3 more sources

Taxonomic synopsis of Leguminosae subfamilies Cercidoideae, Detarioideae, and Dialioideae in the National Forest of Caxiuanã, Pará, Brazil

Boletim do Museu Paraense Emílio Goeldi. Ciências Naturais, 2021
We conducted a floristic study in the National Forest of Caxiuanã (FLONA Caxiuanã) located in the state of Pará, Brazil, in the municipalities of Portel and Melgaço.
Catarina Silva de Carvalho, Rafael Barbosa Pinto, Marli Pires Morim, João Ubiratan Moreira dos Santos   +3 more
doaj   +1 more source

Amazonian terrestrial water balance inferred from satellite-observed water vapor isotopes

Nature Communications, 2022
The evolution of the Amazon forest is tightly coupled to its terrestrial water balance. Here, the authors show that forest biomass changes in the Amazon are a driver of the spatiotemporal variation of evapotranspiration, and such changes could have a ...
Mingjie Shi, John R. Worden, Adriana Bailey, David Noone, Camille Risi, Rong Fu, Sarah Worden, Robert Herman, Vivienne Payne, Thomas Pagano, Kevin Bowman, A. Anthony Bloom, Sassan Saatchi, Junjie Liu, Joshua B. Fisher   +14 more
doaj   +1 more source

The impact of structural error on parameter constraint in a climate model [PDF]

Earth System Dynamics, 2016
Uncertainty in the simulation of the carbon cycle contributes significantly to uncertainty in the projections of future climate change. We use observations of forest fraction to constrain carbon cycle and land surface input parameters of the global ...
D. McNeall, J. Williams, B. Booth, R. Betts, P. Challenor, A. Wiltshire, D. Sexton   +6 more
doaj   +1 more source

Estimativa do balanço de radiação por sensoriamento remoto de diferentes usos de solo no sudoeste da Amazônia brasileira / Estimative of radiation balance by remote sensing of different soil uses in the brazilian southern Amazon [PDF]

Sociedade & Natureza, 2015
Changes in land use have motivated research on the dynamics of radiative and energy exchange in the Brazilian Amazon, which in turn cause demand for such data on the surface in spatial and temporal scales.
Luiz Carlos Da Silva, José Maurício Cunha, Nadja Gomes Machado, Milton César Costa Campos, Marcelo Sacardi Biudes   +4 more
doaj   +1 more source

Anuran diversity indicates that Caatinga relictual Neotropical forests are more related to the Atlantic Forest than to the Amazon [PDF]

PeerJ, 2019
The relationships among the morphoclimatic domains of South America have been a major biogeographical issue of recent years. Palynological, geological and phytogeographical data suggest that the Amazon Forest and the Atlantic Forest were connected during
Deborah P. Castro, João Fabrício M. Rodrigues, Maria Juliana Borges-Leite, Daniel Cassiano Lima, Diva Maria Borges-Nojosa   +4 more
doaj   +2 more sources