6 documents found, page 1 of 1
Amazon tree dominance across forest strata
Draper, Frederick C.; Costa, Flavia R. C.; Arellano, Gabriel; Phillips, Oliver L.; Duque, Alvaro; Macía, Manuel J.; ter Steege, Hans; Asner, Gregory P.Made available in DSpace on 2021-06-25T10:27:12Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-01; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); The forests of Amazonia are among the most biodiverse plant communities on Earth. Given the immediate threats posed by climate and land-use change, an improved understanding of how this extraordinary biodiversity is spatially organized...
Variations in Amazon forest productivity correlated with foliar nutrients and m...
Mercado, Lina; Patiño, Sandra; null, Tomas; Fyllas, Nikolaos M.; Weedon, Graham P.; Sitch, Stephen A.; Quesada, Carlos Alberto; Phillips, Oliver L.The rate of above-ground woody biomass production, WP, in some western Amazon forests exceeds those in the east by a factor of 2 or more. Underlying causes may include climate, soil nutrient limitations and species composition. In this modelling paper, we explore the implications of allowing key nutrients such as N and P to constrain the photosynthesis of Amazon forests, and also we examine the relationship bet...
Height-diameter allometry of tropical forest trees
Feldpausch, Ted R.; Banin, Lindsay F.; Phillips, Oliver L.; Baker, Timothy R.; Lewis, Simon L.; Quesada, Carlos Alberto; Affum-Baffoe, KofiTropical tree height-diameter (<i>H:D</i>) relationships may vary by forest type and region making large-scale estimates of above-ground biomass subject to bias if they ignore these differences in stem allometry. We have therefore developed a new global tropical forest database consisting of 39 955 concurrent <i>H</i> and <i>D</i> measurements encompassing 283 sites in 22 tropical countries. Utilising this data...
Basin-wide variations in Amazon forest structure and function are mediated by b...
Quesada, Carlos Alberto; Phillips, Oliver L.; Schwarz, Michael; Czimczik, Claudia I.; Baker, Timothy R.; Patiño, Sandra; Fyllas, Nikolaos M.Forest structure and dynamics vary across the Amazon Basin in an east-west gradient coincident with variations in soil fertility and geology. This has resulted in the hypothesis that soil fertility may play an important role in explaining Basin-wide variations in forest biomass, growth and stem turnover rates. Soil samples were collected in a total of 59 different forest plots across the Amazon Basin and analys...
Drought-mortality relationships for tropical forests
Phillips, Oliver L.; Van Der Heijden, Geertje M.F.; Lewis, Simon L.; Lopez-Gonzalez, Gabriela; Aragao, L. E.O.C.; Lloyd, Jon; Malhi, Yadvinder SinghThe 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 before, during, and after recent drought events, from 119...
Basin-wide variations in foliar properties of Amazonian forest: Phylogeny, soil...
Fyllas, Nikolaos M.; Patiño, Sandra; Baker, Timothy R.; Nardoto, G. B.; Martinelli, Luiz Antônio; Quesada, Carlos Alberto; Paiva, Romilda Q.We analysed 1040 individual trees, located in 62 plots across the Amazon Basin for leaf mass per unit area (MA), foliar carbon isotopic composition (δ13C) and leaf level concentrations of C, N, P, Ca, Mg, K and Al. All trees were identified to the species level with the dataset containing 58 families, 236 genera and 508 species, distributed across a wide range of soil types and precipitation regimes. Some folia...