Results 61 to 70 of about 12,097 (227)

SPATIAL PATTERN OF REGENERATION OF Aspidosperma polyneuron Müll. Arg. IN A REMNANT SECTOR SUBMITTED TO SELECTIVE USE IN THE NORTH OF MISIONES PROVINCE

open access: yesCiência Florestal, 2009
The spatial pattern of regeneration of Aspidosperma polyneuron Müll.Arg. was studied in a remnant sector of the Paranaense forest in the Misiones province, Argentina. All individuals were mapped in a 210 m x 100 m area (2,1 ha).
Martín Martín Pinazo   +3 more
doaj   +1 more source

Bryophytes from some Caatinga areas in the state of Bahia (Brazil) [PDF]

open access: yes, 1998
The caatinga is a deciduous and xerophilous vegetation that covers large areas in Brazil. An irregular rainfall with a marked dry period is a characteristic feature.
Albertos, Belén   +2 more
core  

Pollination and plant reproduction in the Cerrado, the world's most biodiverse savanna

open access: yesBiological Reviews, Volume 101, Issue 1, Page 74-105, February 2026.
ABSTRACT The Brazilian Cerrado is a continental‐wide biodiversity hotspot and the most species‐rich savanna ecosystem in the world. The main aspect characterising this biodiversity is that the landscape is arranged as an intricate mosaic of different plant formations, including grasslands, savannas, and forests, each harbouring distinct but ...
João C. F. Cardoso   +6 more
wiley   +1 more source

Estudo das estruturas anatômicas e de algumas propriedades físicas da madeira de 14 espécies ocorrentes em áreas de Caatinga [PDF]

open access: yes, 1980
Foram estudadas as madeiras de 14 espécies, ocorrentes em áreas de caatingas do Nordeste. Além das análises das estruturas anatômicas, foi considerado o peso específico e as espécies em questão submetidas ao teste de luz ultravioleta de ondas ...
Alves, José Luiz de Hamburgo   +1 more
core  

Mapping the density of giant trees in the Amazon

open access: yesNew Phytologist, Volume 249, Issue 1, Page 152-168, January 2026.
Summary Tall trees (height ≥ 60 m) are keystone elements of tropical forests, strongly influencing biodiversity, carbon storage, and ecosystem resilience. Yet, their density and spatial distribution remain poorly quantified, especially in remote Amazonian regions, limiting our understanding of their ecological roles and contribution to forest–climate ...
Robson Borges de Lima   +20 more
wiley   +1 more source

VARIAÇÃO FENOTÍPICA PARA CARACTERES SILVICULTURAIS EM POPULAÇÕES DE Aspidosperma spp. SEM ESTRUTURA DE PROGÊNIES

open access: yesRevista do Instituto Florestal, 2016
O objetivo deste estudo foi estimar os parâmetros genéticos para os caracteres silviculturais em Aspidosperma polyneuron Müll.Arg. e Aspidosperma cylindrocarpon Müll.Arg., para fins de conservação ex situ e uso em programas de recuperação ambiental.
Camila Regina Silva Baleroni Recco   +7 more
doaj  

Seed production in relation to fruit size of quebracho blanco (Aspidosperma quebracho-blanco) in the semiarid Chaco forest [PDF]

open access: yes, 2012
Para manejar y conservar una población biológica es necesario conocer las etapas de su ciclo de vida. El quebracho blanco es una especie clave en el ecosistema chaqueño y es necesario emprender estudios relacionados con su producción de semillas.
Cardozo, Silvana   +2 more
core   +1 more source

Pseudo‐Natural Products Inspired by Aspidospermidine‐, Strychnos‐, and Koumine Monoterpene Indole Alkaloids Reveal Pyrimidine Biosynthesis Inhibitors

open access: yesHelvetica Chimica Acta, Volume 108, Issue 12, December 2025.
Chemical evolution of alkaloids inspired the synthesis of a monoterpene alkaloid‐inspired pseudo‐natural product compound collection and revealed a novel de novo pyrimidine biosynthesis inhibitor chemotype. ABSTRACT In pseudo‐natural product (PNP) design, natural product fragments are combined in arrangements not found in nature to afford novel ...
Animesh Biswas   +9 more
wiley   +1 more source

Chemical and biological evaluation of rejects from the wood industry. [PDF]

open access: yes, 2011
Este estudo visa a caracterização química e a avaliação da atividade antimicrobiana de extratos obtidos a partir de rejeitos resultantes do beneficiamento de madeiras nobres comercializadas no Paraná: Peroba-Rosa (Aspidosperma sp.), Roxinho (Peltogyne sp.
GLINSKI, A.   +6 more
core  

Home - About - Disclaimer - Privacy