Mess neṣer ɛekuc id yussan deg uqbu yettdawin s yemɣan mess ḥeblal muḥend si tnemhalt n tẓegwa neɣ leɣwabi, akk aṣla ṭariq d asedawan deg tsedawit mouloud mammeri de departement biologie, yettwaxeṣen deg wayen yaɛnan l’écologie vegetal, yidsen awal tameddit n wass-agi ad wendiniɣ tanemirt nwen mi id rrem isteqsiyen n radyu n tizi wzu imi deram ɣer laɛraḍ tadwint iferzizwi ttiɛad yidwen as letnayen id iteddun si 3 alama 4 d ameslay ɣef ayen icuden ɣer ugama d twunaḍt di lwiya tizi wezu tmurt n leqbayel.