9 documents found, page 1 of 1

Taking the pulse of Earth's tropical forests using networks of highly distribut...

Made available in DSpace on 2021-06-25T11:16:28Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-01; Agence Nationale Des Parcs Nationaux; Centre for International Forestry Research; Departamento Administrativo de Ciencia, Tecnología e Innovación (COLCIENCIAS); David and Lucile Packard Foundation; European Space Agency; Leverhulme Trust; Gordon and Betty Moore Foundation; Fundação de Amparo à Pesquisa ...

The Brazilian Program for Biodiversity Research (PPBio) Information System

Tropical Tree Branch-Leaf Nutrient Scaling Relationships Vary With Sampling Loc...

Foliar trait contrasts between African forest and savanna trees: Genetic versus...

Variations in leaf mass per unit area (Ma) and foliar concentrations of N, P, C, K, Mg and Ca were determined for 365 trees growing in 23 plots along a West African precipitation gradient ranging from 0.29 to 1.62m a-1. Contrary to previous studies, no marked increase in Ma with declining precipitation was observed, but savanna tree foliar [N] tended to be higher at the drier sites (mass basis). Generally, Ma w...

A network of monitoring networks for evaluating biodiversity conservation effec...

The necessity to create national to global-scale biodiversity monitoring systems as part of assessing progress toward biodiversity agendas presents a challenge for signatory countries. This is a brief review of ongoing Brazilian national initiatives that would allow the construction of a general biomonitoring network scheme in protected areas; with additional focus on linking independent monitoring schemes. We ...

Leaf-level photosynthetic capacity in lowland Amazonian and high-elevation Ande...

We examined whether variations in photosynthetic capacity are linked to variations in the environment and/or associated leaf traits for tropical moist forests (TMFs) in the Andes/western Amazon regions of Peru. We compared photosynthetic capacity (maximal rate of carboxylation of Rubisco (Vcmax), and the maximum rate of electron transport (Jmax)), leaf mass, nitrogen (N) and phosphorus (P) per unit leaf area (M...

Edaphic, structural and physiological contrasts across Amazon Basin forest-sava...

Sampling along a precipitation gradient in tropical South America extending from ca. 0.8 to 2.0 m ag-1, savanna soils had consistently lower exchangeable cation concentrations and higher C/N ratios than nearby forest plots. These soil differences were also reflected in canopy averaged leaf traits with savanna trees typically having higher leaf mass per unit area but lower mass-based nitrogen (Nm) and potassium ...

Biome-specific effects of nitrogen and phosphorus on the photosynthetic charact...

Photosynthesis/nutrient relationships of proximally growing forest and savanna trees were determined in an ecotonal region of Cameroon (Africa). Although area-based foliar N concentrations were typically lower for savanna trees, there was no difference in photosynthetic rates between the two vegetation formation types. Opposite to N, area-based P concentrations were—on average—slightly lower for forest trees; a...

Characterization of active and total fungal communities in the atmosphere over ...

Fungi are ubiquitous in the atmosphere and may play an important role in atmospheric processes. We investigated the composition and diversity of fungal communities over the Amazon rainforest canopy and compared these communities to fungal communities found in terrestrial environments. We characterized the total fungal community and the metabolically active portion of the community using high-throughput DNA and ...