RT info:eu-repo/semantics/preprint
T1 Influence of high temperatures on seed germination of a special Pinus pinaster stand adapted to frequent fires
A1 Torres Carretero, Olga
A1 Calvo Galván, María Leonor
A1 Valbuena Relea, María Luz
A2 Ecologia
K1 Ecología. Medio ambiente
K1 Fire
K1 Heat-shock
K1 Mediterranean pine stand
K1 Viability
AB This study examines the effect of fire on the germination of Pinus pinaster seeds from a population with special adaptations to this type of disturbance, due to the high frequency of fires to which they have been subjected. The action of fire was simulated in the laboratory using thermal shocks. Temperatures of 60, 90, 120, 200 and 300 °C were used for exposure times of 1 and 5 min. The viability of seeds of this species from the soil seed bank of a population subjected to a wildfire was also evaluated. The results show that germination is not increase by a thermal treatment. The effect is negative at temperatures above 90 °C and exposure times of 1 min with a significant decrease in, or even no, germination. Therefore the seeds cannot stand high temperatures and reproductive effort is placed on serotinous cone development and the production of high numbers of seeds. The high viability of the seeds from the area burned by wildfire, immediately after the fire and 1 year later, show the high potential of the soil seed bank to contribute to the regeneration of the burned area.
PB Springer
YR 2019
FD 2019-05-27
LK http://hdl.handle.net/10612/10837
UL http://hdl.handle.net/10612/10837
NO Plant Ecology, 2006, vol. 186, n. 1
NO P. 129–136
DS BULERIA. Repositorio Institucional de la Universidad de León
RD 27-abr-2024