Results 31 to 40 of about 33,155 (312)

The Amazon Forest [PDF]

open access: yes, 1991
Most of the Amazon Basin is covered with dense tropical rain forest comprised of many different species of trees and shrubs, often hundreds of different species per square kilometer. These are by far the world’s most extensive and rich virgin forests. The forests are often less dense and even patchy on the highland fringes of the basin.
openaire   +1 more source

Fire may prevent future Amazon forest recovery after large-scale deforestation

open access: yesCommunications Earth & Environment, 2023
The Amazon forest is regarded as a tipping element of the Earth system, susceptible to a regime change from tropical forest to savanna and grassland due to anthropogenic land use and climate change.
Markus Drüke   +5 more
doaj   +1 more source

Forest regeneration pathways in contrasting deforestation patterns of Amazonia

open access: yesFrontiers in Environmental Science, 2023
Secondary vegetation is increasingly recognized as a key element for biodiversity conservation and carbon stocks in human-modified landscapes. Contrasting deforestation patterns should lead to distinct patterns of forest regeneration, but this ...
Lucas Alencar   +3 more
doaj   +1 more source

New generation geostationary satellite observations support seasonality in greenness of the Amazon evergreen forests

open access: yesNature Communications, 2021
Cloud cover and scarcity of ground-based validation hinder remote sensing of forest dynamics in the Amazon basin. Here, the authors analyse imagery from a high-frequency geostationary satellite sensor to study monthly NDVI patterns in the Amazon forest ...
Hirofumi Hashimoto   +8 more
doaj   +1 more source

Biogeochemical cycling of carbon, water, energy, trace gases and aerosols in Amazonia: The LBA Eustach experiments. [PDF]

open access: yes, 2002
The biogeochemical cycling of carbon, water, energy, aerosols, and trace gases in the Amazon Basin was investigated in the project European Studies on Trace Gases and Atmospheric Chemistry as a Contribution to the Large-Scale Biosphere-Atmosphere ...
Almeida, S.S. de   +86 more
core   +1 more source

The role of vicariance and dispersal on the temporal range dynamics of forest vipers in the Neotropical region.

open access: yesPLoS ONE, 2021
The emergence of the diagonal of open/dry vegetations, including Chaco, Cerrado and Caatinga, is suggested to have acted as a dispersal barrier for terrestrial organisms by fragmenting a single large forest that existed in South America into the present ...
Matheus Pontes-Nogueira   +3 more
doaj   +1 more source

Factors controlling spatio-temporal variation in carbon dioxide efflux from surface litter, roots, and soil organic matter at four rain forest sites in the eastern Amazon [PDF]

open access: yes, 2007
This study explored biotic and abiotic causes for spatio-temporal variation in soil respiration from surface litter, roots, and soil organic matter over one year at four rain forest sites with different vegetation structures and soil types in the eastern
da Costa, A. C. L.   +9 more
core   +1 more source

River logjams cause frequent large-scale forest die-off events in southwestern Amazonia [PDF]

open access: yesEarth System Dynamics, 2017
This paper investigates the dynamics of logjam-induced floods and alluvial deposition in the Bolivian Amazon and the effects these have on forest disturbance and recovery cycles. It expands on previous work by Gullison et al.
U. Lombardo
doaj   +1 more source

Large-vertebrate assemblages of primary and secondary forests in the Brazilian Amazon. [PDF]

open access: yes, 2007
Secondary forests account for 40% of all tropical forests yet little is known regarding their suitability as habitat for diurnal large mammals and game birds. This is especially so for second-growth that develops on large areas of degraded land.
Peres, Carlos A.   +2 more
core   +1 more source

Morphological correlates of fire-induced tree mortality in a central Amazonian forest. [PDF]

open access: yes, 2003
Tree characteristics were recorded from 2829 standing trees in 24 0.25-ha terra firme forest plots in central Amazonia, 3 y after a surface fire had swept through the study area.
Peres, Carlos A.   +2 more
core   +1 more source

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