Water scarcity challenges water security: a case for Spain?s freshwater ecosystems - Sabater,S.; Barquín,J.; Blasco,J.; Elosegi,A.; García,C.; Ginebreda,A.; Gómez,C.M.; Muñoz,I.; Rico,A.; Rovira,J.; Batalla,R.J. (Environmental Research Letters, 2025)