Evolución de la composición florística post-fuego en un carrascal de navarra (n de España)

Abstract

This paper presents results about floristic composition dynamics during four years after controlled fires in a mediterranean pin-oak ivood in Navarra (N Spain). The samples liave been taken from eight permanent 1 m- plots subjected to different treatments: different fire type, different situation on the field, and with or without not fired soil addition. Tlie regeneration strategies of the species and the influence of the different treatments on thefiora are analysed. The floristic composition dynamics follows a general model: the species began to appear progressively. Tlie number of species grows gradually to reach a maximum between one and three years after the fire. Later, the number of species diminishes. Post fire species are those that existed before the fire, that is to say, there is an autosuccession process.