Abstract
The aeropalynogical study of the atmosphere of El-Hadjar town was carried out during one year, from June 1, 2012 to May 31, 2013. The collected pollen during the sampling period yielded 2729 pollen grains/cm2 belonging to 50 taxa, distributed on 20 families (Apiaceae, Arecaceae, Asteraceae, Boraginaceae, Brassicaceae, Caryophyllaceae, Chenopodiaceae/Amaranthaceae, Cupressaceae, Cyperaceae, Ericaceae, Fabaceae, Lamiaceae, Mimosaceae, Pinaceae, Poaceae, Rosaceae, Scrophulariaceae, Ulmaceae, Urticaceae and Vitaceae.); 24 genera (Alnus, Artemisia, Betula, Borago, Carya, Casuarina, Echium, Ephedra, Eucalyptus, Fraxinus, Juglans, Juncus, Ligustrum, Mercurialis, Melia, Pistacia, Plantago, Platanus, Populus, Quercus, Rumex, Salix, Tilia and Trifolium.) and, 6 species (Castanea sativa, Corylus avellana, Olea europaea, Quercus ilex, Ricinus communis and Typha angustifolia). The pollen peak concentration was recorded in April with 715 GP/cm2 and the minimum value in October with 36.08 GP/cm2. The pollen spectrum has a percentage of 52.31% of pollen tree. The Cupressaceae family contributed with 12.84%, Olea europaea with 6.95%, Eucalyptus and Casuarina with 5.85 and 5.71%. The highest percentage of this type of pollen occurs in November with 90.51%, dominated by Casuarina pollen with 86.31%. The highest concentrations of tree taxa are: Eucalyptus (35.03%) and Ligustrum (16.21%) in June. Fraxinus with 64.64% in December, Ericaceae 17.42% in March; Olea europaea and Quercus in April with 18.86% and 6.79% respectively. The pollens of the herbs present 44.89%. They are characterized by the major presence of Poaceae and Mercurialis pollen with the following percentages: 21.49% and 11.75%. It seems that the months of July (86.33%) and August (80.14%) mark the highest percentages of non-tree pollen
Highlights
According to the classification of the World Health Organization (WHO), allergic diseases are the fourth most common chronic disease
The collected pollen during the sampling period yielded 2729 pollen grains/cm2 belonging to 50 taxa, distributed on 20 families (Apiaceae, Arecaceae, Asteraceae, Boraginaceae, Brassicaceae, Caryophyllaceae, Chenopodiaceae/Amaranthaceae, Cupressaceae, Cyperaceae, Ericaceae, Fabaceae, Lamiaceae, Mimosaceae, Pinaceae, Poaceae, Rosaceae, Scrophulariaceae, Ulmaceae, Urticaceae and Vitaceae.); 24 genera (Alnus, Artemisia, Betula, Borago, Carya, Casuarina, Echium, Ephedra, Eucalyptus, Fraxinus, Juglans, Juncus, Ligustrum, Mercurialis, Melia, Pistacia, Plantago, Platanus, Populus, Quercus, Rumex, Salix, Tilia and Trifolium.) and, 6 species (Castanea sativa, Corylus avellana, Olea europaea, Quercus ilex, Ricinus communis and Typha angustifolia)
The Cupressaceae family contributed with 12.84%, Olea europaea with 6.95%, Eucalyptus and Casuarina with 5.85 and 5.71%
Summary
According to the classification of the World Health Organization (WHO), allergic diseases are the fourth most common chronic disease. They constitute a public health problem and cause significant morbidity in different countries. Epidemiological studies have shown that the prevalence of allergic diseases and pollen allergy rhinitis is increasing. In the Mediterranean region, pollen-induced allergic reactions affect more than 10% of the population [1,2,3,4]. This work aims to identify allergenic pollen taxa in the atmosphere of El-Hadjar town. Received by the editors: November 13, 2018; Accepted: December 01, 2018. Key word and phrases: Aeropalynology, allergenic pollens, atmospheric pollens, El-Hadjar region (Algeria).
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