Results 21 to 30 of about 1,244 (182)

Biologia floral e heterostilia em Vismia guianensis (Aubl.) Choisy (Clusiaceae) Floral biology and heterostyly in Vismia guianensis (Aubl.) Choisy (Clusiaceae)

Acta Botânica Brasílica, 1998
Os estudos da biologia floral e reprodutiva e a caracterização da heterostilia em Vismia guianensis realizaram-se na Reserva Ecológica de Dois Irmãos, Recife, PE, entre novembro/1997 e fevereiro/ 1998. V. guianensis é arbustiva, apresenta flores heterostílicas, distílicas, dispostas em panículas terminais.
Mary Janice Lima dos Santos, Isabel Cristina Machado   +1 more
openaire   +3 more sources

El tamaño de las semillas de Vismia glaziovii Ruhl. (Guttiferae) y su Vismia glaziovii Ruhl. (Guttiferae) y su Vismia glaziovii relación con la velocidad de germinación y tamaño de la plántula

Revista Peruana de Biología, 2013
En el presente trabajo analicé la variabilidad intraespecifi ca del tamaño de las semillas de Vismia glaziovii Ruhl y su posible efecto sobre la velocidad de germinación y el tamaño de las plántulas. glaziovii Ruhl y su posible efecto sobre la velocidad de germinación y el tamaño de las plántulas.
Luis L. Arteaga
openaire   +3 more sources

Mapping Key Indicators of Forest Restoration in the Amazon Using a Low-Cost Drone and Artificial Intelligence

Remote Sensing, 2022
Monitoring the vegetation structure and species composition of forest restoration (FR) in the Brazilian Amazon is critical to ensuring its long-term benefits.
Rafael Walter Albuquerque, Daniel Luis Mascia Vieira, Manuel Eduardo Ferreira, Lucas Pedrosa Soares, Søren Ingvor Olsen, Luciana Spinelli Araujo, Luiz Eduardo Vicente, Julio Ricardo Caetano Tymus, Cintia Palheta Balieiro, Marcelo Hiromiti Matsumoto, Carlos Henrique Grohmann   +10 more
doaj   +1 more source

Flavonoids: A Review of Antibacterial Activity Against Gram-Negative Bacteria. [PDF]

Int J Microbiol
The rise in bacterial resistance to conventional antibiotics has led to the search for alternative antimicrobial agents, such as flavonoids, which are widely distributed in plants and known for their antibacterial properties. This review examines the antibacterial activity of flavonoids against Gram‐negative bacteria and identifies gaps in current ...
do Nascimento JB, da Costa JGM.
europepmc   +2 more sources

Anatomia de madeira. Guttiferae [PDF]

Acta Amazonica, 1974
Sinopse Foram analisadas as madeiras de trinta e três espécies de Guttiferae brasileiras, 28 das quais da Amazônia. As espécies em apreço pertencem aos seguintes gêneros: Caraipa, Calophyllum, Clusia, Haploclathra, Kielmeyera, Lorostemon, Mahurea ...
José Elias de Paula
doaj   +1 more source

High intraspecific growth variability despite strong evolutionary legacy in an Amazonian forest

Ecology Letters, Volume 26, Issue 12, Page 2135-2146, December 2023., 2023
Based on 36 years of diameter surveys for 7961 trees of 138 species, we found the greatest variation in growth between individuals within the same species in an Amazonian forest, although taxonomy explained a third of the variation. Species growth was conserved up to the genus and predicted by root, wood and leaf traits.
Sylvain Schmitt, Bruno Hérault, Géraldine Derroire   +2 more
wiley   +1 more source

Past human‐induced ecological legacies as a driver of modern Amazonian resilience

People and Nature, Volume 5, Issue 5, Page 1415-1429, October 2023., 2023
Abstract People have modified landscapes throughout the Holocene (the last c. 11,700 years) by modifying soils, burning forests, cultivating and domesticating plants, and directly and indirectly enriched and depleted plant abundances. These activities also took place in Amazonia, which is the largest contiguous piece of rainforest in the world, and for
Crystal N. H. McMichael, Mark B. Bush, Juan C. Jiménez, William D. Gosling   +3 more
wiley   +1 more source

Warming, drought, and disturbances lead to shifts in functional composition: A millennial‐scale analysis for Amazonian and Andean sites

Global Change Biology, Volume 29, Issue 17, Page 4775-4792, September 2023., 2023
How do tropical forests respond to climate change and disturbances? Here, we assess changes in functional trait composition across 10,000 years in Amazonian and Andean forests, using eight fossil pollen records and data on functional traits. Changes in temperature and disturbances had strongest effect, indicating that increased temperature and ...
Masha T. van der Sande, Mark B. Bush, Christine M. Åkesson, Juan Carlos Berrio, Alex Correia Metrio, Suzette G. A. Flantua, Henry Hooghiemstra, S. Yoshi Maezumi, Crystal N. H. McMichael, Encarni Montoya, Nicole A. S. Mosblech, Majoi de Novaes Nascimento, Marielos Peña‐Claros, Lourens Poorter, Marco F. Raczka, William D. Gosling   +15 more
wiley   +1 more source

Flora da Reserva Ducke, Estado do Amazonas, Brasil: Hypericaceae

Hoehnea, 2018
RESUMO São apresentadas as espécies de Hypericaceae registradas para a Reserva Ducke, Estado do Amazonas, incluindo chave de identificação, descrições, ilustrações, comentários sobre distribuição geográfica e hábitats. A família está representada na área
Milena Ventrichi Martins, Gustavo Hiroaki Shimizu, Volker Bittrich   +2 more
doaj   +1 more source

Fermentation‐mediated growth, signaling, and defense in plants

New Phytologist, Volume 239, Issue 3, Page 839-851, August 2023., 2023
Summary While traditionally considered important mainly in hypoxic roots during flooding, upregulation of fermentation pathways in plants has recently been described as an evolutionarily conserved drought survival strategy, with acetate signaling mediating reprograming of transcription and cellular carbon and energy metabolism from roots to leaves. The
Kolby J. Jardine, Nate McDowell
wiley   +1 more source