Results 41 to 50 of about 607 (128)
Long‐term jaguar demography underscores the ecological value of Amazonian floodplains
Our results provide the first estimates of recruitment and apparent survival for Amazonian jaguars, key parameters for guiding conservation. We show that seasonal wetlands—the Amazonian floodplain forest and reported estimates from Pantanal and the Llanos—harbour the highest jaguar densities across the species' range.
Raíssa Sepulvida +8 more
wiley +1 more source
Ant‐Mediated Ecosystem Functions Along a Tropical Elevational Gradient
ABSTRACT Aim Elevational gradients are excellent systems to study biodiversity variation, yet the ecosystem functions performed by animals along these gradients are poorly understood. We assessed tropical elevational patterns of ant‐mediated seed removal, insect predation and the phylogenetic diversity of the local ant assemblages performing these ...
Chaim J. Lasmar +11 more
wiley +1 more source
Tracing the origins and evolution of nymphalid butterflies (Lepidoptera) in the Atlantic Forest
Understanding the relative roles of diversification and dispersal is key to explaining large‐scale biogeographical patterns. Although both processes are known to shape biodiversity, their relative contributions remain understudied for many organisms. Here, we examine how these processes have jointly contributed to the exceptional diversity and endemism
Mar Repullés +7 more
wiley +1 more source
A agroecologia: estratégias de pesquisa e valores
A agrobiodiversidade é a parcela da biodiversidade constituída por um conjunto de organismos e ecossistemas que apresentam fortes relações com os seres humanos, podendo ser domesticados, semidomesticados, cultivados ou manejados pelo homem.
Rubens Onofre Nodari +1 more
doaj +1 more source
Rapidly declining seagrass meadows in Brazil: Findings from satellite imagery and local knowledge
Abstract Due to the limitations of individual monitoring approaches, integrating social perceptions with multiple advanced technologies provides a new opportunity to gain a comprehensive understanding of ecosystem degradation. We combined historical aerial mapping, satellite imagery, semi‐structured interviews with local stakeholders, and a bilingual ...
Karine Matos Magalhães +6 more
wiley +1 more source
Flash-drying for embryos desiccation Desidratação ultra-rápida de embriões
Seeds of several tree species from Brazilian wet forest are in dangerous situation and show recalcitrant characteristics. Therefore, it is not possible to store them by traditional methods adopted with orthodox seeds and it limits their genetic resources
Antonio Carlos de Souza Medeiros +1 more
doaj +1 more source
Wide variation in hydraulic safety margins across and within southern Amazon forests
Site‐specific conditions and species identity were the main drivers of variation in Ψdry and HSM50 in southern Amazonian trees, but played a weaker role in explaining Ψ50. Ψpredawn strongly predicted HSM50. Across the Amazon, Ψ50_CWM and Ψdry_CWM became more negative with increasing MCWD, whereas HSM50_CWM showed no significant relationship with MCWD ...
Raiane Gonçalves Beú +21 more
wiley +1 more source
NÚMERO DE POPULAÇÕES PARA CONSERVAÇÃO GENÉTICA IN SITU DE ESPÉCIES ARBÓREAS
Este trabalho determina o número necessário de populações para a conservação in situ de espécies arbóreas. As estimativas dos tamanhos amostrais foram calculadas com base em medidas probabilísticas, assumindo populações em Equilíbrio de Hardy-Weinberg -
Alexandre Magno Sebbenn
doaj +1 more source
A cerejeira, Amburana cearensis, é uma das espécies florestais tropicais mais exploradas pela indústria madeireira. Sua reprodução é sexuada e seu ciclo de frutificação é bianual em alguns locais do Brasil Central. As sementes, na natureza, proporcionam
Antonieta N. Salomão +1 more
doaj +1 more source
As unidades de conservação resguardam uma significativa parcela da riqueza biológica existente no Brasil. Neste sentido, é evidente que demandas por conhecimento de aspectos referentes à biodiversidade e como mantê-la possuem destaque na gestão das ...
João Gabriel Ribeiro Giovanelli +3 more
doaj +3 more sources

