Ice cave reveals environmental forcing of long-term Pyrenean tree line dynamics - Leunda, M.; González-Sampériz, P.; Gil-Romera, G.; Bartolomé, M.; Belmonte-Ribas, Á.; Gómez-García, D.; Kaltenrieder, P.; Rubiales, J.M.; Schwörer, C.; Tinner, W.; Morales-Molino, C.; Sancho, C. (Journal Of Ecology, 2019)