• Publications
  • Influence
Continental-scale patterns of canopy tree composition and function across Amazonia
By using the seven forest inventories complemented with trait and inventory data collected elsewhere, two dominant gradients in tree composition and function across the Amazon are shown, one paralleling a major gradient in soil fertility and the other paralleled a gradient in dry season length. Expand
The history of Seasonally Dry Tropical Forests in eastern South America: inferences from the genetic structure of the tree Astronium urundeuva (Anacardiaceae)
Arguments that favour the existence of a previously more continuous formation of SDTF in eastern South America are provided. Expand
Photoperiodic induction of synchronous flowering near the Equator
This work proposes a new mechanism of photoperiodic timekeeping based on the perception of variation in sunrise or sunset time, which explains and predicts the annually repeated, staggered, synchronous and bimodal flowering of many tree species in Amazonian rainforests near the Equator. Expand
Nectar Sugar Composition in Relation to Pollination Syndromes in Sinningieae (Gesneriaceae).
Similarities in the nectar of hummingbird and bee flowers contrast with the presence of specific morphological traits associated with these two syndromes, indicating that plant-pollinator relationships rely on flower display rather than on nectar characteristics. Expand
The use of herbarium specimens in DNA phylogenetics: Evaluation and improvement
Experiments are described about trials of DNA amplification from two to 151-year-old herbarium specimens of plant species the authors needed for their projects, and successful amplification was obtained in eight samples out of the 17 examined. Expand
Systematics and evolution of tribe Sinningieae (Gesneriaceae): evidence from phylogenetic analyses of six plastid DNA regions and nuclear ncpGS.
Mapping of pollination syndromes on the DNA-based trees supported multiple origins of hummingbird and bee Syndromes and derivation of moth and bat syndrome from hummingbird flowers and perennial tubers were derived from perennial stems in non-tuberous plants. Expand
Ethnobotanical survey on wild alpine food plants in Lower and Central Valais (Switzerland).
This study provides for the first time comprehensive data on present day and historical uses of wild plants as food in Lower and Central Valais and can be used to identify species which may provide interesting opportunities for diversification of mountain agriculture. Expand
Impacts of climate change on mountain regions
Floristics of the angiosperm flora of Sub-Saharan Africa: an analysis of the African Plant Checklist and Database
The African Plant Checklist and Database Project (APCD) provides botanists with the first angiosperm checklist and database for Sub-Saharan Africa. This was achieved by merging the existing datasetsExpand
Arbuscular mycorrhizal symbiosis can counterbalance the negative influence of the exotic tree species Eucalyptus camaldulensis on the structure and functioning of soil microbial communities in a
The results clearly show that this plant species significantly modified the soil bacterial community, and changes in the bacterial structure and function were accompanied by disturbances in the composition of the herbaceous plant species layer. Expand