2026-04-14T03:51:33Zhttps://recercat.cat/oai/request

oai:recercat.cat:10459.1/4688782025-10-20T18:04:32Zcom_2072_3622col_2072_479130

00925njm 22002777a 4500 dc Díaz Borrego, Raquel author Lloret Maya, Francisco author Jaime, Luciana author Margalef-Marrase, Jordi author Moya-Pérez, J.M. author Pérez Navarro, María Ángeles author 2025 Extreme climatic events are increasing with climate change, producing changes in communities’ climatic characterization. So, mismatches (climatic disequilibrium, CD) between climatic conditions inferred from species’ requirements (community inferred climate, CIC) and macroclimate may undergo changes with extreme climatic events. Climatic resilience is defined as the ability to maintain or recover community climatic characteristics, regardless of species’ identity, after disturbance or stress. We evaluated the dynamics of plant community climatic characterization in Mediterranean shrublands that experienced a drought event, considering CIC and CD. CIC was calculated by averaging species’ climatic niche centroids, weighted by species’ relative abundances, in the multivariate environmental space obtained from the climate of the species’ geographical occurrence. CD was estimated as Euclidean distance in this space between the observed historic macroclimate and CIC. Climatic resistance was inferred by the distance between pre-drought and drought CIC, climatic resilience by the distance between pre-drought and post-drought CIC, and relative climatic resilience by the same distance weighted by the climatic displacement suffered during the drought. We found a significant reduction in community CD after drought, with CIC becoming more arid, likely due to environmental filtering of those species with wetter distribution. Communities with less pre-drought CD showed higher climatic resistance but pre-drought CD did not explain climatic resilience. Communities with more arid CIC exhibited high climatic resilience regardless of drought impact (high relative climatic resilience), except for certain communities exhibiting highly arid CICs. Communities with less arid CIC showed low relative climatic resilience, as their resilience was associated with high resistance. T he study highlights community impacts by extreme droughts through filtering of species distributed in more humid climates. T his produces changes in the CD of communities, whose resilience is determined by CIC, pre-drought CD, and drought impact in terms of CIC change. Financial support was provided by the Spanish Ministry of Science and Innovation and the Generalitat de Catalunya. We thank Pilar Hurtado-Aragüés for her valuable help during field surveys and also Miguel Ángel Esteve-Selma from the University of Murcia for sharing his knowledge about the study system. We also thank the Calblanque Regional Parc conservation team and General Directorate of Natural Heritage and Climate Action of Murcia for facilitating our access to protected areas and expediting the granting of permits. Funding – This work was supported by Spanish Ministry of Science and Innovation through the University Teacher Training Program (FPU) [FPU20/06049] and the funding of the project RESIBIO (PID2020-115264RB-I00) and by Government of Catalonia with 2017 SGR 1001 and 2021 SGR 00849 AGAUR grants. Permits – A permit for accessing protected areas was obtained by direct contact with the director of the areas and corresponding forestry agents. http://hdl.handle.net/10459.1/468878 Climatic disequilibrium Drought impact Resilience Resistance Climatic resilience after extreme drought in Mediterranean shrubland plant communities