Results 51 to 60 of about 12,119 (214)

Stemflow Dynamics in the Jamari National Forest (Brazilian Amazon): I. The Role of Tree Structure

Biotropica, Volume 58, Issue 3, May 2026.
A portion of rainfall that contacts tree canopies is drained down tree stems as stemflow. Stemflow is an underexamined component of rainfall partitioning in tropical forests. To investigate how tree canopy structural attributes influence stemflow in the Brazilian Amazon, we measured stemflow, rainfall, and dendrometric parameters of 56 trees in the ...
Jeferson Alberto de Lima, John Toland Van Stan II, Karolina Lewińska, Agnieszka Dradrach, Jakub Ceglarek, Kelly Cristina Tonello   +5 more
wiley   +1 more source

COMPOSIçãO QUíMICA E ATIVIDADES FOTOPROTETORA E ANTIRADICALAR IN VITRO DOS GALHOS DE Platonia insignis (CLUSIACEAE)

Química Nova, 2021
CHEMICAL COMPOSITION AND PHOTOPROTECTIVE AND ANTIRADICAL ACTIVITIES OF THE BRANCHES OF Platonia insignis (CLUSIACEAE). The chemical study of the branches of Platonia insignis enabled the isolation of the biflavonoid morelloflavone and the identification,
Andréia G. A. Silva, Rodrigo de A. Moreira, Renato Pinto de Sousa, Evaldo dos S. M. Filho, Marcia D. A. Veras, Mariana Helena Chaves, Sâmya D. L. Freitas   +6 more
doaj   +1 more source

Antibacterial xanthones from Kielmeyera variabilis mart. (Clusiaceae) [PDF]

Memórias do Instituto Oswaldo Cruz, 2003
The bioassay-guided fractionation of stems from Kielmeyera variabilis, traditionally used in Brazilian folk medicine, yielded assiguxanthone-B (1), kielcorin (4), 2,5-dihydroxybenzoic acid (3), and a mixture of xanthones containing assiguxanthone-B (1) and 1,3,5,6-tetrahydroxy-2-prenylxanthone (2) (1:1 w/w).
Lucimar Pinheiro, Celso Vataru Nakamura, Benedito Prado Dias Filho, Antonio Gilberto Ferreira, Maria Claudia Marx Young, Diógenes Aparicio Garcia Cortez   +5 more
openaire   +4 more sources

INDEPENDENT ORIGINATION OF FLORAL ZYGOMORPHY, A PREDICTED ADAPTIVE RESPONSE TO POLLINATORS: DEVELOPMENTAL AND GENETIC MECHANISMS [PDF]

, 2016
Observations of floral development indicate that floral organ initiation in pentapetalous flowers more commonly results in a medially positioned abaxial petal (MAB) than in a medially positioned adaxial petal (MAD), where the medial plane is defined by ...
Bukhari, Ghadeer, Zhang, Wenheng
core   +1 more source

The Flooding Gradient Affects Seed Dispersal by Fruit‐Eating Fishes in Amazonian Whitewater Floodplain Forests

Biotropica, Volume 58, Issue 3, May 2026.
This research approaches the interaction between frugivorous fish and the flooded forests in the central Amazon. We evaluated the fruit consumption by fish and the seed dispersal potential along the flood gradient. We tested the hypothesis that the role of fish as seed dispersers varies between low várzea (LV) and high várzea (HV) forests.
Gilvan Costa, Sandra Bibiana Correa, Florian Wittmann, Jochen Schöngart, Maria Teresa Fernandez Piedade, Efrem Jorge Ferreira, Leonardo Maltchik   +6 more
wiley   +1 more source

Jumping plant-lice of the Paurocephalinae (Insecta, Hemiptera, Psylloidea): systematics and phylogeny [PDF]

, 2003
Much confusion exists with respect to the content and definition of the psyUid subfamily Paurocephalinae. Based on a cladistic analysis of 22 morphological characters (16 adult and 6 larval), the subfamily is redefined to comprise the following five ...
Burckhardt, Daniel, Mifsud, David
core  

Vegetational Characteristics in Natural Habitat and Population Structure of the Endangered Plant Tigridiopalma Genus

Ecology and Evolution, Volume 16, Issue 4, April 2026.
First comprehensive ecological assessment of the endangered genus Tigridiopalma, covering two China endemic Plant Species with Extremely Small Populations (PSESP), T. magnifica and the newly described T. exalata. T. magnifica exhibits broader habitat diversity and understory resilience, while T.
Peishan Zou, Xirong Zheng, Shiou Yih Lee, Chunzhi Liu, Zhijun Xie, Ke Zheng, Guofeng Liu, Seping Dai   +7 more
wiley   +1 more source

Caracterização fisionômica - estrutural de um remanescente de floresta ombrófila montana de Pernambuco, Brasil Physiognomic and structural characterization of a montane rain forest remnant in Pernambuco State, Brazil

Acta Botânica Brasílica, 2006
As florestas ombrófilas montanas de Pernambuco são pouco estudadas quanto a fisionomia, florística, estrutura e semelhanças com as florestas de terras baixas.
Elba Maria Nogueira Ferraz, Maria Jesus Nogueira Rodal   +1 more
doaj   +1 more source

Wound‐Healing Efficacy of Garcinia pedunculata Fruit Extract: In Vivo and In Silico Validation of Regenerative Mechanisms With Histological Analysis

Food Science &Nutrition, Volume 14, Issue 4, April 2026.
This study demonstrates that G. pedunculata fruit possesses potent wound‐healing activity, evidenced by accelerated wound contraction, reduced epithelialization time, enhanced fibroblast proliferation, increased collagen deposition, and improved neovascularization in both excision and burn models. ABSTRACT Garcinia pedunculata Roxb., traditionally used
Kazi Sanjida Tahrim, Md. Mushfiqur Rahman, Md. Sohanur Rahman, Mohammad Abu Sayem, Md. Safayat Hossen Momen, Tanvir Hasan, Md. Jahirul Islam Mamun, Md. Mahmudul Hasan   +7 more
wiley   +1 more source

Medicinal Potential of Garcinia Species and Their Compounds

Molecules, 2020
Garcinia is a genus of Clusiaceae, distributed throughout tropical Asia, Africa, New Caledonia, Polynesia, and Brazil. Garcinia plants contain a broad range of biologically active metabolites which, in the last few decades, have received considerable ...
Bruna Larissa Spontoni do Espirito Santo, Lidiani Figueiredo Santana, Wilson Hino Kato Junior, Felipe de Oliveira de Araújo, Danielle Bogo, Karine de Cássia Freitas, Rita de Cássia Avellaneda Guimarães, Priscila Aiko Hiane, Arnildo Pott, Wander Fernando de Oliveira Filiú, Marcel Arakaki Asato, Patrícia de Oliveira Figueiredo, Paulo Roberto Haidamus de Oliveira Bastos   +12 more
doaj   +1 more source