6 documents found, page 1 of 1
The role of parabiotic ants and environment on epiphyte composition and protect...
Leal, Laura Carolina; Jakovac, Catarina Conte; Bobrowiec, Paulo Estefano Dineli; Camargo, José Luís Campana; Peixoto, Paulo Enrique CardosoAnt gardens (AGs) are a multi-partner specialized ant-plant interaction involving several ant and epiphyte species. Although studies on AGs have reported possible roles for some species in this system, there are unanswered questions regarding the process of epiphyte incorporation in the AGs and the role of less aggressive ant species in AG protection. In this study, we used AGs in the Brazilian Amazon forest fo...
Land use as a filter for species composition in Amazonian secondary forests
Jakovac, Catarina Conte; Bongers, Frans; Kuyper, Thomas W.; Mesquita, Rita de Cássia Guimarães; Pena-Claros, MarielosQuestions: Secondary succession in the tropics can follow alternative pathways. Land-use history is known to engender alternative successional communities, but the underlying mechanisms driving and sustaining divergence remain unclear. In this study we aim to answer the following questions: (1) does previous land use act as a filter for species composition in secondary forests; and (2) what are the relative rol...
Biodiversity recovery of Neotropical secondary forests
Rozendaal, Danaë M.A.; Bongers, Frans; Aide, T. Mitchell; Álvarez-Dávila, Esteban; Ascarrunz, Nataly L.; Balvanera, Patricia; Becknell, Justin M.Old-growth tropical forests harbor an immense diversity of tree species but are rapidly being cleared, while secondary forests that regrow on abandoned agricultural lands increase in extent. We assess how tree species richness and composition recover during secondary succession across gradients in environmental conditions and anthropogenic disturbance in an unprecedented multisite analysis for the Neotropics. S...
Spatial and temporal dynamics of shifting cultivation in the middle-Amazonas ri...
Jakovac, Catarina Conte; Dutrieux, Lo?c Paul; Siti, Latifah; Pena-Claros, Marielos; Bongers, FransShifting cultivation is the main land-use system transforming landscapes in riverine Amazonia. Increased concentration of the human population around villages and increasing market integration during the last decades may be causing agricultural intensification. Studies have shown that agricultural intensification, i.e. higher number of swidden-fallow cycles and shorter fallow periods, reduces crop productivity ...
Carbon sequestration potential of second-growth forest regeneration in the Lati...
Chazdon, Robin L.; Broadbent, Eben N.; Rozendaal, Danaë M.A.; Bongers, Frans; Zambrano, Angélica María Almeyda; Aide, T. Mitchell; Balvanera, PatriciaRegrowth of tropical secondary forests following complete or nearly complete removal of forest vegetation actively stores carbon in aboveground biomass, partially counterbalancing carbon emissions from deforestation, forest degradation, burning of fossil fuels, and other anthropogenic sources. We estimate the age and spatial extent of lowland second-growth forests in the Latin American tropics and model their p...
Floodplains as an Achilles' heel of Amazonian forest resilience
Flores, Bernardo Monteiro; Holmgren, Milena; Xu, Chi; Nes, Egbert H Van; Jakovac, Catarina Conte; Mesquita, Rita de Cássia Guimarães; Scheffer, MartenThe massive forests of central Amazonia are often considered relatively resilient against climatic variation, but this view is challenged by the wildfires invoked by recent droughts. The impact of such fires that spread from pervasive sources of ignition may reveal where forests are less likely to persist in a drier future. Here we combine field observations with remotely sensed information for the whole Amazon...