Results 61 to 70 of about 279 (160)

Systematic reduction in seed rain of large‐seeded and endozoochorous species in pastures compared to forests along a tropical elevational gradient

open access: yesApplied Vegetation Science, Volume 27, Issue 2, April/June 2024.
By analyzing variation in seed rain among old‐growth montane forests and livestock pastures along a 2,000 m elevational gradient in the tropical Andes of southern Ecuador, this study reveals that large seeds and endozoochorous species are less prevalent in seed rain from pastures compared to seed rain from forests at the same elevation.
Diana Carolina Acosta‐Rojas   +5 more
wiley   +1 more source

Roles for leakiness and O2 evolution in explaining lower‐than‐theoretical quantum yields of photosynthesis in the PEP‐CK subtype of C4 plants

open access: yesNew Phytologist, Volume 242, Issue 2, Page 431-443, April 2024.
Summary Theoretically, the PEP‐CK C4 subtype has a higher quantum yield of CO2 assimilation (ΦCO2) than NADP‐ME or NAD‐ME subtypes because ATP required for operating the CO2‐concentrating mechanism is believed to mostly come from the mitochondrial electron transport chain (mETC). However, reported ΦCO2 is not higher in PEP‐CK than in the other subtypes.
Wenjing Ouyang   +10 more
wiley   +1 more source

Regeneração pós-fogo em um fragmento de floresta estacional semidecidual no município de Viçosa, MG

open access: yesCiência Florestal, 2002
Estudou-se a vegetação colonizadora seis meses após perturbação por fogo, em uma á rea do Campus da Universidade Federal de Viçosa, em Viçosa (20o 45’ S, 42o 51’ W ), MG.
Sebastião Martins Venâncio   +3 more
doaj  

Controle do capim-gordura nas áreas de recuperação ambiental da Mineração Corumbaense Reunida (MCR), Corumbá, MS

open access: yesBiodiversidade Brasileira, 2014
A espécie invasora Melinis minutiflora P. Beauv. (capim-gordura) tem sido objeto de atenção nas áreas em processo de recuperação ambiental do empreendimento da Mineração Corumbaense Reunida (MCR), pois coloniza vegetação nativa e cresce sobre espécies ...
Rosilene Rodrigues Silva   +3 more
doaj   +3 more sources

Invasion of the Brazilian campo rupestre by the exotic grass Melinis minutiflora is driven by the high soil N availability and changes in the N cycle

open access: yesScience of The Total Environment, 2017
The Serra do Rola Moça State Park (PESRM) in Minas Gerais State, Brazil is a preserved site representative of the campo rupestre biome over an ironstone outcrop that has a high level of plant diversity. Almost 60% of this grassy field has been invaded by the exotic molasses grass (Melinis minutiflora), which constitutes a severe threat to the ...
Ribeiro, Pamella   +9 more
openaire   +3 more sources

Retenção do fósforo de fenos de gramíneas tropicais em ovinos Phosphorus balance in sheep fed on tropical grass hays

open access: yesArquivo Brasileiro de Medicina Veterinária e Zootecnia, 1999
Mediu-se a retenção do fósforo de quatro gramíneas tropicais, capim-gordura (Melinis minutiflora), capim-braquiária (Brachiaria decumbens), capim-coastcross (Cynodon dactilon) e capim-colonião (Panicum maximum), em cinco ovinos por meio de ensaios de ...
R.A. Reis, D.S. Graça, R.M. Maurício
doaj   +1 more source

Respuesta de Melinis minutiflora a la inoculación con hongos micorrícico arbusculares en un Inceptisol de Colombia Response of Melinis minutiflora to inoculation with arbuscular mycorrhizal fungi in an Inceptisol of Colombia

open access: yesActa Agronómica, 2009
En un invernadero del Centro Internacional de Agricultura Tropical, CIAT, Cali (Colombia) se evaluó la aplicación de cinco inóculos de hongos micorrícico arbusculares, HMA: Kuklospora colombiana, Gigaspora margarita, Glomus manihotis y la mezcla de estos
Lyda Minelly Zárate Quiroga   +2 more
doaj  

Análise comparativa de fragmentos identificáveis de forrageiras, pela técnica micro-histológica Comparative analysis of identifiable fragments of forages, by the microhistological technique

open access: yesRevista Brasileira de Zootecnia, 2005
Objetivou-se, com este trabalho, verificar, pela técnica micro-histológica, diferenças entre espécies forrageiras quanto ao percentual de fragmentos identificáveis, em função do processo digestivo e da época do ano.
Maristela de Oliveira Bauer   +4 more
doaj   +1 more source

Respuesta de Melinis minutiflora a la inoculación con hongos micorrícico arbusculares en un Inceptisol de Colombia

open access: yesActa Agronómica, 2009
En un invernadero del Centro Internacional de Agricultura Tropical, CIAT, Cali (Colombia) se evaluó la aplicación de cinco inóculos de hongos micorrícico arbusculares, HMA: Kuklospora colombiana, Gigaspora margarita, Glomus manihotis y la mezcla de estos
Barrios Edmundo   +2 more
doaj   +2 more sources

Seasonal variation of soluble carbohydrates and starch in Echinolaena inflexa, a native grass species from the Brazilian savanna, and in the invasive grass Melinis minutiflora

open access: yesBrazilian Journal of Biology
Echinolaena inflexa (Poir.) Chase is an abundant C3 grass species with high biomass production in the Brazilian savanna (cerrado); Melinis minutiflora Beauv.
A. Souza   +5 more
doaj   +1 more source

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