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| Pàgina inicial > Articles > Articles publicats > Diverging responses of terrestrial ecosystems to water stress post disturbance |
| Data: | 2025 |
| Resum: | Terrestrial ecosystems are major carbon (C) pools, sequestering ~20% of anthropogenic C emissions. However, increasing frequency and intensity of climate-sensitive disturbances (for example, drought and wildfire) threaten long-term C uptake. Although direct effects of disturbances are well-documented, indirect effects remain unknown. Here we quantify changes in the sensitivity of terrestrial gross primary production to water stress before and after severe droughts and fires. We find divergent changes across the globe, where dry regions have increased sensitivity, while wet regions have decreased sensitivity. Water availability, solar radiation, nutrient availability and biodiversity are the main drivers mediating these changes. Sensitivity takes ~4-5 years to recover after disturbances, but the increasing frequency of disturbances threatens this recovery. Our results reveal strong cross-system discrepancies in ecosystem responses to disturbances, highlighting the vulnerability of dryland ecosystems in future climates. |
| Ajuts: | Agencia Estatal de Investigación TED2021-132627B-I00 Agencia Estatal de Investigación PID2022-140808NB-I00 Agència de Gestió d'Ajuts Universitaris i de Recerca 2023/SGR-00118 |
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| Llengua: | Anglès |
| Document: | Article ; recerca ; Versió sotmesa a revisió |
| Publicat a: | Nature climate change, Vol. 15 (January 2025) , p. 73-79, ISSN 1758-6798 |
Preprint 38 p, 2.9 MB |