| Texto completo | |
| Autor(es): Mostrar menos - |
Habermann, Eduardo
[1]
;
Dias de Oliveira, Eduardo A.
[2]
;
Delvecchio, Gustavo
[1]
;
Belisario, Rafael
[1]
;
Barreto, Rafael Ferreira
[3]
;
Viciedo, Dilier Olivera
[3]
;
Rossingnoli, Nadia Oliveira
[1]
;
de Pinho Costa, Katia Aparecida
[4]
;
Prado, Renato de Mello
[3]
;
Gonzalez-Meler, Miquel
[2]
;
Martinez, Carlos Alberto
[1]
Número total de Autores: 11
|
| Afiliação do(s) autor(es): | [1] Univ Sao Paulo, Dept Biol, FFCLRP, Ribeirao Preto, SP - Brazil
[2] Univ Illinois, Dept Biol Sci, Ecol & Evolut, Chicago, IL 60680 - USA
[3] Sao Paulo State Univ, Sch Agr & Veterinarian Sci, Dept Soils & Fertilizers, Jaboticabal, SP - Brazil
[4] Fed Inst Goiano, Rio Verde Campus, Rio Verde, Go - Brazil
Número total de Afiliações: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Science of The Total Environment; v. 759, MAR 10 2021. |
| Citações Web of Science: | 0 |
| Resumo | |
Tropical pastures play a significant role in the global carbon cycle and are crucial for world livestock production. Despite its importance, there is a paucity of field studies that clarify how tropical pasture species will be affected by environmental changes predicted for tropical regions. Using a temperature-free air-controlled enhancement (T-FACE) system, we increased canopy temperature (+2 degrees C over ambient) and evaluated the effects of warming under two soil moisture conditions in a factorial design over the physiology, forage production, and forage quality of a tropical forage legume, Stylosanthes capitata. Under well-watered conditions, warming increased the PSII efficiency, net photosynthesis, and aboveground biomass accumulation, but reduced forage quality and digestibility by decreasing crude protein content and increasing lignin content. Non-irrigated conditions under ambient temperature reduced leaf water status presumably promoting the reduction in net photosynthesis, forage production, and forage quality and digestibility. Under the combination of canopy warming and non-irrigated conditions, warming mitigated the effects of reduced soil moisture on leaf photosynthesis and biomass production, but a significant interaction reduced forage quality and digestibility more than under isolated treatments of warming or non-irrigated conditions. We found a potential physiological acclimation of the tropical forage species to moderate warming when grown under rainfed or well-watered conditions. However, this acclimation was achieved due to a trade-off that reduced forage nutritional value and digestibility that may impact future animal feeding, livestock production, and would contribute to methane emissions. (C) 2020 Elsevier B.V. All rights reserved. (AU) | |
| Processo FAPESP: | 16/12853-6 - Impacto do incremento da temperatura e da deficiência hídrica, em simulação climática futura, no desempenho fisiológico e produtivo de duas espécies forrageiras tropicais |
| Beneficiário: | Gustavo Delvecchio |
| Modalidade de apoio: | Bolsas no Brasil - Iniciação Científica |
| Processo FAPESP: | 16/09742-8 - Relações hídricas, trocas gasosas, anatomia foliar e análises termográficas de duas espécies forrageiras sob aquecimento e deficiência hídrica em condições de campo |
| Beneficiário: | Eduardo Habermann |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 08/58075-8 - Miniface climate-change impact experiment to analyze the effects of elevated CO2 and warming on photosynthesis, gene expression, biochemistry, growth, nutrient dynamics and yield of two contrasting tropical forage species |
| Beneficiário: | Carlos Alberto Martinez y Huaman |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa de Pesquisa sobre Mudanças Climáticas Globais - Temático |