120064 20251219150009.0 doi 10.1038/s41598-022-22391-x sideral 130937 ART-2022-130937 eng Revuelto, J. (orcid)0000-0001-5483-0147 Intermediate snowpack melt-out dates guarantee the highest seasonal grasslands greening in the Pyrenees 2022 Access copy available to the general public Unrestricted In mountain areas, the phenology and productivity of grassland are closely related to snow dynamics. However, the influence that snow melt timing has on grassland growing still needs further attention for a full understanding, particularly at high spatial resolution. Aiming to reduce this knowledge gap, this work exploits 1 m resolution snow depth and Normalized Difference Vegetation Index observations acquired with an Unmanned Aerial Vehicle at a sub-alpine site in the Pyrenees. During two snow seasons (2019–2020 and 2020–2021), 14 NDVI and 17 snow depth distributions were acquired over 48 ha. Despite the snow dynamics being different in the two seasons, the response of grasslands greening to snow melt-out exhibited a very similar pattern in both. The NDVI temporal evolution in areas with distinct melt-out dates reveals that sectors where the melt-out date occurs in late April or early May (optimum melt-out) reach the maximum vegetation productivity. Zones with an earlier or a later melt-out rarely reach peak NDVI values. The results obtained in this study area, suggest that knowledge about snow depth distribution is not needed to understand NDVI grassland dynamics. The analysis did not reveal a clear link between the spatial variability in snow duration and the diversity and richness of grassland communities within the study area. info:eu-repo/grantAgreement/ES/MICINN/IJC-2018-036260-I info:eu-repo/grantAgreement/ES/MINECO/CGL2017-82216-R info:eu-repo/semantics/openAccess by https://creativecommons.org/licenses/by/4.0/deed.es 4.6 2022 MULTIDISCIPLINARY SCIENCES 22 / 73 = 0.301 2022 Q2 T1 0.973 2022 Multidisciplinary 2022 Q1 7.5 2022 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Gómez, D. Alonso González, E. Vidaller, I. Rojas Heredia, F. Deschamps Berger, C. García Jiménez, J. Rodríguez López, G. Universidad de Zaragoza Sobrino, J. Montorio, R. Universidad de Zaragoza (orcid)0000-0001-7403-1764 Perez Cabello, F. Universidad de Zaragoza (orcid)0000-0003-4831-4060 López Moreno, J. I. (orcid)0000-0002-7270-9313 4000 415 Universidad de Zaragoza Dpto. Análisis Económico Área Fund. Análisis Económico 3006 010 Universidad de Zaragoza Dpto. Geograf. Ordenac.Territ. Área Análisis Geográfico Regi. 12, 1 (2022), 18328 [11 pp.] Sci. rep. (Nat. Publ. Group) Scientific reports (Nature Publishing Group) 2045-2322 3886506 http://zaguan.unizar.es/record/120064/files/texto_completo.pdf Versión publicada 2491367 http://zaguan.unizar.es/record/120064/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:120064 articulos driver 2025-12-19-14:58:11 ARTICLE