RT Conference Proceedings
T1 Growth trends and sensitivity to climate of declining Mediterranean open woodlands exhibiting widespread mortality in Southern Spain [Póster]
A1 Natalini, Fabio
A1 Alejano Monge, Reyes
A1 Vázquez Piqué, Javier
A1 Cañellas, Isabel
AB We present two chronologies of dead and weakened Quercus ilex trees from declining open woodlands of Southern Andalusia and discuss climate's implication in the current widespread mortality in these ecosystems. Basal area increments were used to find out periods of growth decline preceding death. Absent rings became frequent since the 1970s, coinciding with increasing drought. Negative pointer years matched dry years and became more pronounced in the last decades. Growth was correlated with the annual Palmer Drought Severity Index and precipitations from previous October to May. Mean sensitivity increased recently, ranging between high values (0.35-0.5). Correlations with spring temperatures turned from positive to negative, positive correlations with current autumn precipitation arose whereas significant positive correlations with summer precipitations were no longer observed. These changes could suggest modifications on tree phenology. Intensively-used Mediterranean open woodlands of Southern Andalusia are vulnerable and the current dying process suggests that they are unlikely to overcome increasing stress climatic conditions.
YR 2013
FD 2013
LK http://hdl.handle.net/10272/10209
UL http://hdl.handle.net/10272/10209
LA eng
NO Natalini, F., Alejano Monge, R.,  Vázquez Piqué, J., Cañellas, I.: "Growth trends and sensitivity to climate of declining Mediterranean open woodlands exhibiting widespread mortality in Southern Spain". En: Ameridendro 2013, At Tucson, USA . Póster
DS Repositorio Institucional de la Universidad de Huelva
RD 1 jun 2026