Impact of climatic factors on pollen grains development in Black alder (Alnus glutinosa (L.) Gaertn) - Sahli, Abdelouahab; Ennouni, Hassan; Kadaoui, Khalil; Houssni, Mhammad; Sbih, Hasnae Ben; Chakkour, Soufian; Ater, Mohammed (Review of palaeobotany and palynology, 2026)