Adriana Prieto

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Amazon forests are a key but poorly understood component of the global carbon cycle. If, as anticipated, they dry this century, they might accelerate climate change through carbon losses and changed surface energy balances. We used records from multiple long-term monitoring plots across Amazonia to assess forest responses to the intense 2005 drought, a(More)
The vast extent of the Amazon Basin has historically restricted the study of its tree communities to the local and regional scales. Here, we provide empirical data on the commonness, rarity, and richness of lowland tree species across the entire Amazon Basin and Guiana Shield (Amazonia), collected in 1170 tree plots in all major forest types. Extrapolations(More)
*The rich ecology of tropical forests is intimately tied to their moisture status. Multi-site syntheses can provide a macro-scale view of these linkages and their susceptibility to changing climates. Here, we report pan-tropical and regional-scale analyses of tree vulnerability to drought. *We assembled available data on tropical forest tree stem mortality(More)
PAPER Markedly divergent estimates of Amazon forest carbon density from ground plots and satellites Edward T. A. Mitchard*, Ted R. Feldpausch, Roel J. W. Brienen, Gabriela Lopez-Gonzalez, Abel Monteagudo, Timothy R. Baker, Simon L. Lewis, Jon Lloyd, Carlos A. Quesada, Manuel Gloor, Hans ter Steege, Patrick Meir, Esteban Alvarez, Alejandro Araujo-Murakami,(More)
Atmospheric carbon dioxide records indicate that the land surface has acted as a strong global carbon sink over recent decades, with a substantial fraction of this sink probably located in the tropics, particularly in the Amazon. Nevertheless, it is unclear how the terrestrial carbon sink will evolve as climate and atmospheric composition continue to(More)
The Amazon rain forest sustains the world's highest tree diversity, but it remains unclear why some clades of trees are hyperdiverse, whereas others are not. Using dated phylogenies, estimates of current species richness and trait and demographic data from a large network of forest plots, we show that fast demographic traits--short turnover times--are(More)
Estimates of extinction risk for Amazonian plant and animal species are rare and not often incorporated into land-use policy and conservation planning. We overlay spatial distribution models with historical and projected deforestation to show that at least 36% and up to 57% of all Amazonian tree species are likely to qualify as globally threatened under(More)
The extent to which pre-Columbian societies altered Amazonian landscapes is hotly debated. We performed a basin-wide analysis of pre-Columbian impacts on Amazonian forests by overlaying known archaeological sites in Amazonia with the distributions and abundances of 85 woody species domesticated by pre-Columbian peoples. Domesticated species are five times(More)
While Amazonian forests are extraordinarily diverse, the abundance of trees is skewed strongly towards relatively few 'hyperdominant' species. In addition to their diversity, Amazonian trees are a key component of the global carbon cycle, assimilating and storing more carbon than any other ecosystem on Earth. Here we ask, using a unique data set of 530(More)
RESEARCH Phylogenetic diversity of Amazonian tree communities Eur ıdice N. Honorio Coronado*, Kyle G. Dexter, R. Toby Pennington, J erôme Chave, Simon L. Lewis, Miguel N. Alexiades, Esteban Alvarez, Atila Alves de Oliveira, Iêda L. Amaral, Alejandro Araujo-Murakami, Eric J. M. M. Arets, Gerardo A. Aymard, Christopher Baraloto, Damien Bonal, Roel Brienen,(More)