| Full text | |
| Author(s): |
de Oliveira, Tassio Brito
[1]
;
de Lucas, Rosymar Coutinho
[1, 2]
;
de Almeida Scarcella, Ana Silvia
[2]
;
Contato, Alex Graca
[2]
;
Pasin, Thiago Machado
[2]
;
Martinez, Carlos Alberto
[1]
;
Teixeira de Moraes Polizeli, Maria de Lourdes
[1, 2]
Total Authors: 7
|
| Affiliation: | [1] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto, Dept Biol, Ribeirao Preto, SP - Brazil
[2] Univ Sao Paulo, Fac Med Ribeirao Preto, Dept Biochem & Immunol, Ribeirao Preto, SP - Brazil
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | SOIL BIOLOGY & BIOCHEMISTRY; v. 148, SEP 2020. |
| Web of Science Citations: | 0 |
| Abstract | |
Climate change is expected to affect rainfall dynamics and the global average temperature. Here, we evaluated the effects of those changes, the intense water deficit and warming (+2 degrees C), on a tropical grassland soil. We tested the correlation between soil extracellular enzyme activities (EEA) and soil respiration (CO2 efflux) and temperature and soil water content (SWC). A climate change simulation was performed in a field experiment using a temperature free-air-controlled enhancement facility. SWC was the main driver of changes in EEA. The most affected enzymes were beta-glucosidase, xylanase and phosphatase. As SWC declined, the potential activity of beta-glucosidase and xylanase decreased, while the activity of phosphatase and CO2 efflux increased (P < 0.01). Thus, intense drought periods are likely to have a greater influence on the rates of decomposition and mineralization in the evaluated soil than is the 2 degrees C increase in mean temperature. (AU) | |
| FAPESP's process: | 17/09000-4 - Effects of temperature and water stress, in climate change scenario, on the fungal community in tropical soil and selection of nitrous oxide producing strains |
| Grantee: | Tássio Brito de Oliveira |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 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 |
| Grantee: | Carlos Alberto Martinez y Huaman |
| Support Opportunities: | Research Program on Global Climate Change - Thematic Grants |