TY  - JOUR
AU  - Bompy, F.
AU  - Imbert, D.
AU  - Dulormne, M.
PY  - 2015//
TI  - Impact patterns of soil salinity variations on the survival rate, growth performances, and physiology of Pterocarpus officinalis seedlings
T2  - Trees – Structure and Function
JO  - Trees – Structure and Function
SP  - 119
EP  - 128
VL  - 29
IS  - 1
KW  - Acclimation
KW  - Leaf chemical composition
KW  - Leaf gas exchange
KW  - NaCl salinity
KW  - Tropical swamp forest
KW  - Vegetative growth
N2  - Key message: Pterocarpus officinalisis able to (1) improve its acclimation capacity if soil salinity increases slowly and (2) benefit from afreshwater episode.Abstract: One likely effect of global change is an increase of the amplitude of salt variations in the soil of brackish coastal wetland forests. In the Antilles, such forests are dominated by the species Pterocarpus officinalis. The study aimed to determine the effect of 3 salinity levels (freshwater, moderate, and hypersalinity—i.e., 0, 10, and 30 ‰, respectively) and 3 patterns of salinity variation (fast or slow salinity increase, fluctuating salinity) on the growth and ecophysiology of P. officinalis seedlings. P. officinalis proved tolerant to 10 ‰ salinity, even if at this salt concentration the water constraint altered the plant’s water status and reduced stomatal conductance. No impact of the pattern of salinity variation was observed at 10 ‰. Seedlings were strongly affected by hypersalinity, but were able to acclimatize efficiently and to improve their performances (higher survival, total biomass, and photosynthesis) when salinity increased slowly. Young P. officinalis were also able to take advantage of a freshwater episode on the longer term, certainly through leaf desalination associated with enhanced photosynthesis and water use efficiency. Higher soil salinity and more intense dry seasons in the context of climate change could affect the stand-level regeneration potential of P. officinalis seedlings. © 2014, Springer-Verlag Berlin Heidelberg.
UR  - http://www.scopus.com/inward/record.url?eid=2-s2.0-84925538209&partnerID=40&md5=0c3eb4528971b17fbec10cd0fc5f6f81
N1  - Export Date: 9 April 2015
ID  - Bompy_etal2015
ER  -