Results 31 to 40 of about 82 (82)

Avaliação das atividades antifúngica, antimicobacteriana e larvicida de Duroia macrophylla e D. saccifera

open access: yesRevista de Epidemiologia e Controle de Infecção, 2016
Justificativa e objetivos: A vasta biodiversidade amazônica tem sido apontada como uma fonte de produtos naturais candidatos a diversas atividades farmacológicas, principalmente no combate a doenças infecciosas.
Ana Júlia Reis   +11 more
doaj   +1 more source

Wood density variation across an Andes‐to‐Amazon elevational gradient

open access: yesJournal of Ecology, Volume 113, Issue 9, Page 2370-2385, September 2025.
We study how wood density varies along a 3500‐m elevational gradient, spanning from the Andean tree line to the Amazon basin. Our results reveal that wood density decreases from low to mid‐elevations, then increases toward the tree line. These patterns underscore the influence of species composition, life forms such as tree ferns, and local ...
William Farfan‐Rios   +17 more
wiley   +1 more source

Aquatic herbaceous plants of the Amazon floodplains: state of the art and research needed Herbáceas aquáticas das áreas alagáveis amazônicas: estado da arte e estudos necessários

open access: yesActa Limnologica Brasiliensia, 2010
The Amazonian wetlands cover a vast area subject to a monomodal flood pulse with an annual amplitude averaging 10 m, which defines an aquatic phase and a terrestrial phase of great biological importance.
Maria Teresa Fernandez Piedade   +6 more
doaj   +1 more source

Migration Patterns of Epiphyllous Bryophyte Metapopulations in Amazonian Fragmented Landscape Inferred From Census and Genomic Data

open access: yesBiotropica, Volume 57, Issue 5, September 2025.
We examined the long‐term genetic consequences of habitat fragmentation on two epiphyllous bryophyte species in experimentally fragmented Amazonian forests. Using genotyping and demographic data, we found species‐specific responses and metapopulation dynamics in relation to their mating system.
Adriel M. Sierra   +3 more
wiley   +1 more source

Distribuição espacial de famílias botânicas em uma savana amazônica brasileira

open access: yesRevista Brasileira de Meio Ambiente, 2021
As savanas amazônicas vêm sofrendo constante degradação ambiental devido a ações humanas por queimadas e exploração ilegal de areia branca para a construção civil. Poucos estudos sobre a flora foram desenvolvidos nesse ecossistema. O presente estudo teve
Hilton Lucas Gonçalves Durão   +2 more
doaj  

Gene Flow and Vertical Stratification of Pollination in the Bat‐Pollinated Liana Marcgravia longifolia

open access: yesEcology and Evolution, Volume 15, Issue 8, August 2025.
This study investigates pollen dispersal, vertical stratification of gene flow, and spatial genetic structure in the bat‐pollinated liana Marcgravia longifolia in a western Amazonian forest. Flowers are produced from the forest floor to the canopy, allowing analysis of pollination across strata.
Malika Gottstein   +6 more
wiley   +1 more source

Relação entre diferentes espécies de formigas e a mirmecófita Cordia nodosa Lamarck (Boraginaceae) em áreas de mata ripária na Amazônia mato-grossense Relationship among different plant-ants and its myrmecophite host Cordia nodosa Lamarck (Boraginaceae) in a riparian Mato Grosso Amazonian forest

open access: yesActa Amazonica, 2011
Os benefícios obtidos por um organismo em uma associação mutualística podem variar em função de fatores ambientais, bem como entre as diferentes espécies que podem estar associadas.
Thiago Junqueira Izzo   +1 more
doaj   +1 more source

Stimulating reciprocity: How human–plant relations support Indigenous cultural revitalization and stewardship in the Ecuadorian Amazon

open access: yesPeople and Nature, Volume 7, Issue 5, Page 1151-1170, May 2025.
Abstract Human–plant relations shed light on forms of reciprocity in Indigenous territorial stewardship. This article shows how Cofán, Siona and Siekopai (also Secoya or Airo Pai in Peru) Indigenous Peoples in the western Amazon collect, cultivate and use yoco (Paullinia yoco) to promote communal conviviality, reclaim once‐threatened cultural practices
Joel E. Correia   +11 more
wiley   +1 more source

‘Sowing and harvesting water’: Revisiting forest restoration in the Peruvian Andes through a multi‐stakeholder analysis

open access: yesPeople and Nature, Volume 7, Issue 3, Page 631-652, March 2025.
Abstract Efforts to restore Peru's megadiverse Andean Forests are rapidly growing. While ecological determinants for restoration success are well known, knowledge on the socio‐economic and governance conditions that allow for the success of ecological restoration using native species is scarce.
Tina Christmann   +15 more
wiley   +1 more source

Phylogenetic conservatism in the relationship between functional and demographic characteristics in Amazon tree taxa

open access: yesFunctional Ecology, Volume 39, Issue 1, Page 181-198, January 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Leaf and wood functional traits of trees are related to growth, reproduction, and survival, but the degree of phylogenetic conservatism in these relationships is largely unknown.
Pablo Sanchez‐Martinez   +214 more
wiley   +1 more source

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