Alnus glutinosa (L.) Gaertn. (Betulaceae) est une espèce clé dans certaines formations alluviales et riveraines du continent européen. Au Maroc, elle se trouve en limite méridionale de son aire distribution où représentée par des relictes les zones refuges a migré pendant phases glaciaires Pléistocène. Malgré sa grande valeur patrimoniale, il y très peu données sur répartition l’état peuplement...

We studied the modern pollen rain in two different landscapes from Hyrcanian lowland forests up to slopes of Alborz Mountains Gilan province for first time. Pollen traps were installed one year and moss samples collected along altitudinal transects 100 1800 m 2300 elevations. The results counting environmental DNA barcoding (metabarcoding) compared 32 locations. In total, 81 vascular plant spec...

Today a large part of the European population is exposed to levels air pollution exceeding standards recommended by World Health Organization. Moreover, and seasonal emission allergenic pollen are progressively affecting human health can cause severe allergic reactions, particularly when combines with allergen peaks. Unlike atmospheric pollutants anthropogenic origin, sources have pulsating tre...

A new cyclic diarylheptanoid namely alnuheptanoid B (3), along with four known cyclic diarylheptanoids: myricanone (1), (+)-S-myricanol (2), myricanone 5-O--D-glucopyranoside (4), and (+)-S-myricanol 5-O--D-glucopyranoside (5) were isolated from the EtOAc fraction of Alnus japonica Steud (family: Betulaceae) stem bark. Their structures were established by different spectroscopic analyses, as ...