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Bulletin de situation acridienne Madagascar. Bulletin de la première décade de janvier (2016-D01)









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    Bulletin
    Bulletin de situation acridienne Madagascar. Bulletin de la première décade de janvier 2015 (2015-D01) 2015
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    Durant la 1ère décade de janvier 2015, un fort gradient pluviométrique Nord-Est/Sud-Ouest concernait Madagascar induisant une très forte pluviosité dans l’Aire d’invasion Nord, une pluviosité moyenne à forte dans l'Aire d’invasion Centre et une pluviosité souvent faible à moyenne dans l'Aire grégarigène.
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    Bulletin de situation acridienne Madagascar. Bulletin de la première décade de janvier 2014 (2014-D01) 2014
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    Durant la 1ère décade de janvier 2014, une zone dépressionnaire tropicale, accompagnée de rafales de vent plus ou moins tourbillonnants de 61 km/h en moyenne, s’est formée dans le canal du Mozambique. Elle a engendré des pluies excédentaires à hyper-excédentaires par rapport aux besoins du Criquet migrateur malgache dans l’Aire d’invasion et l’Aire grégarigène, comme le montrent aussi les estimations de FEWS-NET sur son site officiel. Par ailleurs, des pluies relativement importantes ont égaleme nt été enregistrées dans l’Aire de multiplication initiale (171,1 mm à Analamary, 159,1 mm à Betroka et 158,7 mm à Ranohira) et dans l’Aire transitoire de multiplication (138,3 mm à Bekily et 126,2 mm à Ambovombe).
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    Bulletin de situation acridienne Madagascar. Bulletin de la deuxième décade de janvier (2016-D02) 2016
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    Selon Fews-net, la 2ème décade de janvier 2016 semble avoir été marquée par une très faible pluviosité (inférieure à 4 mm) dans la majorité des régions situées entre le 19ème parallèle sud et le tropique du Capricorne. La pluviosité était forte à très forte (supérieure à 40 mm) dans la région de Toamasina et faible à moyenne (variant de 4 à 40 mm) dans le reste de la Grande-Île. Les relevés du Centre national antiacridien (CNA) indiquaient que la pluviosité était favorable au Criquet migrateur m algache solitaire dans l’Aire grégarigène transitoire Est, l’Aire de multiplication initiale Nord et l’Aire transitoire de multiplication Centre. Les températures minimales et maximales moyennes restaient favorables au développement et à la reproduction du Locusta migratoria capito dans toute la Grande-Île.

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