Post-fire regeneration of cork Oak and holm Oak at Tlemcen National Park (Western Algeria)

Farah Bessaid, Okkacha Hasnaoui, Brahim Babali, Sid Ahmed Aouadj
2021 Biodiversity Journal  
The most worrying factor in forest degradation is fire, whose outbreak and spread is favored by physical and natural conditions. Algeria, like other Mediterranean countries, is paying a high cost. It must be recognized that forest fires have become disastrous in the last decades. An average of 30,000 hectares is destroyed every year, threatening the country's ecological balance. This study aims to identify the post-fire dynamics of forest structuring species in Tlemcen National Park (Western
more » ... eria). This article is written in this context. This work is based on observations as well as a monitoring of burned sites. The aim is to show concretely the resilience of cork Oak (Quercus suber L.) and holm Oak (Q. ilex L.), the flagship species of Tlemcen National Park, in order to develop a conservation strategy and identify a succession model after a fire. An experimental protocol has been put in place to assess vegetation regeneration. Post-fire morphometric measurements were performed three years in a row (T1, T2 and T3) during the adequate phenological period. The observed elongations range from 22.6 cm to 17.9 cm in the first year; 46.16 cm to 36.5 cm in the second year and 95.2 cm to 67.3 cm in the third year in favour of holm Oak. Monthly and inter-year comparative analyses reveal that, under the same site conditions, holm Oak shows a better adaptability to fires than cork Oak. The various measures recorded show an elongation of 20.95% in favour of holm Oak in the first year, 20.92% in the second year and 29.30% in the third year in favour of the holm Oak. A competition for the recapture of the burnt space takes place after the fires. As for the other species, there is a self-succession where chamephytic species are the most favoured.
doi:10.31396/biodiv.jour.2021.12.2.475.482 fatcat:vk5nqabc2fdydijmhrooznnwge