Academic Journal
Changes in soil organic matter molecular structure after five-years mimicking climate change scenarios in a Mediterranean savannah
| العنوان: | Changes in soil organic matter molecular structure after five-years mimicking climate change scenarios in a Mediterranean savannah |
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| المؤلفون: | San Emeterio, Layla M., Jiménez Morillo, N. T., Pérez-Ramos, Ignacio Manuel, Domínguez, María Teresa, González-Pérez, José Antonio |
| المساهمون: | Ministerio de Ciencia, Innovación y Universidades (España), Ministerio de Economía y Competitividad (España), San Emeterio, Layla M., Jiménez Morillo, N. T., Pérez-Ramos, Ignacio Manuel, Domínguez, María Teresa, González-Pérez, José Antonio |
| بيانات النشر: | Elsevier |
| سنة النشر: | 2023 |
| المجموعة: | Digital.CSIC (Consejo Superior de Investigaciones Científicas / Spanish National Research Council) |
| مصطلحات موضوعية: | Climate change, Dehesas, Soil organic matter, Biomarkers, Analytical pyrolysis |
| الوصف: | 9 páginas.- 5 figuras.- 1 tabla.- referencias.- Supplementary data to this article can be found online at https://doi.org/10.1016/j.scitotenv.2022.159288 ; Mediterranean savannahs (dehesas) are agro-sylvo-pastoral systems with a marked seasonality, with severe summer drought and favourable rainy spring and autumn. These conditions are forecasted to become more extreme due to the ongoing global climate change. Under such conditions, it is key to understand soil organic matter (SOM) dynamics at a molecular level. Here, analytical pyrolysis (Py-GC/MS) combined with chemometric statistical approaches was used for the molecular characterization of SOM in a five-years field manipulative experiment of single and combined rainfall exclusion (drought) and increased temperature (warming). The results indicate that SOM molecular composition in dehesas is mainly determined by the effect of the tree canopy. After only five years of the climatic experiment, the differences caused by the warming, drought and the combination of warming+drought forced climate scenarios became statistically significant with respect to the untreated controls, notably in the open pasture habitat. The climatic treatments mimicking foreseen climate changes affected mainly the lignocellulose dynamics, but also other SOM compounds (alkanes, fatty acids, isoprenoids and nitrogen compounds) pointing to accelerated humification processes and SOM degradation when soils are under warmer and dryer conditions. Therefore, it is expected that, in the short term, the foreseen climate change scenarios will exert changes in the Mediterranean savannah SOM molecular structure and in its dynamic. ; Projects EU-EJC 2nd Call Projects MIXROOT-C and MAXROOT-C, Ministerio de Ciencia Innovación y Universidades (MICIU) INTERCARBON project (CGL2016-78937-R) & DECAFUN (CGL2015-70123-R). L. M. San Emeterio also thanks MICIU for funding FPI research grants (BES-2017-07968). ; Peer reviewed |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 1879-1026 |
| Relation: | #PLACEHOLDER_PARENT_METADATA_VALUE#; info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2016-78937-R/ES/, INTERCAMBIO Y FLUJOS DE CARBONO EN SUELOS DE ECOSISTEMAS MEDITERRANEOS NATURALES Y MANEJADOS (BOSQUES, DEHESAS Y CULTIVOS)/; info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2015-70123-R/ES/LAS DEHESAS FRENTE AL CAMBIO GLOBAL: UNA APROXIMACION MULTI-FUNCIONAL/; Publisher's version; http://dx.doi.org/10.1016/j.scitotenv.2022.159288; Sí; Science of The Total Environmen (857) Part I: 159288 (2023); http://hdl.handle.net/10261/281293; http://dx.doi.org/10.13039/501100003329 |
| DOI: | 10.1016/j.scitotenv.2022.159288 |
| DOI: | 10.13039/501100003329 |
| الاتاحة: | http://hdl.handle.net/10261/281293 https://doi.org/10.1016/j.scitotenv.2022.159288 https://doi.org/10.13039/501100003329 |
| Rights: | open |
| رقم الانضمام: | edsbas.5D330FEC |
| قاعدة البيانات: | BASE |
| تدمد: | 18791026 |
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| DOI: | 10.1016/j.scitotenv.2022.159288 |