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Title: | Different Cerrado Ecotypes Show Contrasting Soil Microbial Properties, Functioning Rates, and Sensitivity to Changing Water Regimes | Authors: | Durán, J. Meira-Neto, J. Delgado-Baquerizo, M. Hamonts, K. Figueiredo, V. Enrich-Prast, A. Rodríguez, A. |
Keywords: | cerrado; ecotype; precipitation regime; C cycle; N cycle; greenhouse gases. | Issue Date: | 2023 | Publisher: | Springer Nature | Project: | J.D. and A.R. acknowledge support from the FCT (IF/00950/2014 and SFRH/BDP/108913/2015, respectively), as well as from the MCTES, FSE, UE, and the CFE (UIDB/ 04004/2020) research unit financed by FCT/ MCTES through national funds (PIDDAC). M.D-B. acknowledges support from the Marie Sklodowska- Curie Actions of the Horizon 2020 Framework Programme H2020-MSCA-IF-2016 under REA Grant agreement no. 702057 (CLIMIFUN) and the BES Grant agreement n LRA17\1193 (MUSGONET)J.D. and A.R. acknowledge support from the FCT (IF/00950/2014 and SFRH/BDP/108913/2015, respectively), as well as from the MCTES, FSE, UE, and the CFE (UIDB/ 04004/2020) research unit financed by FCT/ MCTES through national funds (PIDDAC). M.D-B. acknowledges support from the Marie Sklodowska- Curie Actions of the Horizon 2020 Framework Programme H2020-MSCA-IF-2016 under REA Grant agreement no. 702057 (CLIMIFUN) and the BES Grant agreement n LRA17\1193 (MUSGONET) | Serial title, monograph or event: | Ecosystems | Volume: | 26 | Issue: | 7 | Abstract: | Soil moisture is among the most important factors regulating soil biodiversity and functioning. Models forecast changes in the precipitation regime in many areas of the planet, but how these changes will influence soil functioning, and how biotic drivers modulate such effects, is far from being understood. We evaluated the responses of C and N fluxes, and soil microbial properties to different soil water regimes in soils from the main three ecotypes of the world’s largest and most diverse tropical savanna. Further,weexplored the direct and indirect effects of changes in the ecotype and soil water regimes on these key soil processes. Soils from the woodland savanna showed a better nutritional status than the other ecotypes, as well as higher potential N cycling rates, N2O emissions, and soil bacterial abundance but lower bacterial richness, whereas potential CO2 emissions and CH4 uptake peaked in the intermediate savanna. The ecotype also modulated the effects of changes in the soil water regime on nutrient cycling, greenhouse gas fluxes, and soil bacterial properties, with more intense responses in the intermediate savanna. Further, we highlight the existence of multiple contrasting direct and indirect (via soil microbes and abiotic properties) effects of an intensification of the precipitation regime on soil Cand N-related processes. Our results confirm that ecotype is a fundamental driver of soil properties and functioning in the Cerrado and that it can determine the responses of key soil processes to changes in the soil water regime. | URI: | https://hdl.handle.net/10316/114658 | ISSN: | 1432-9840 1435-0629 |
DOI: | 10.1007/s10021-023-00838-0 | Rights: | openAccess |
Appears in Collections: | I&D CFE - Artigos em Revistas Internacionais FCTUC Ciências da Vida - Artigos em Revistas Internacionais |
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