Monitoring and Identification of Planktonic Genera/Species and Determination of the Physicochemical

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Monitoring and Identification of Planktonic Genera/Species and Determination of the Physicochemical Factors Favoring the Growth of These Species in Cape 7 (Aftissat) Zone, South of Morocco


The study, conducted in cape 7 (Aftissat) zone, south of Morocco, located 232 km south of Laayoune city and 62 km south of Boujdour city, aims to the identify the planktonic genera/species and determination of the physicochemical factors favoring the growth of these species. The study was carried out on 427 samples, distributed, therefore, as follows, 57.2% (n = 245) of the samples during the year 2016 and 42.5% (n = 182) in the year 2017. In addition, 32.8% and 27.6% of the samples were taken, respectively, in winter and autumn, 24.4% of the samples in summer and 15.2% of all samples taken in the spring. Identified total of 30 phytoplankton species were identified, of which 70% (n = 21) are diatoms, 26.67% are dinoflagellates and one species is silicoflagellates. Moreover, the most abundant species in the diatoms are Navicula sp. (69), Licmophora (47), Nitzschia sp. (35), Pseudo nitzschia spp. (31) and in the class Dinoflagellates, Scrippsiella spp. (24), Protoperidinium spp. (11). Some toxic species have also been identified, but with very low frequencies, below the norm. The cape d’Afissat has a very important role in the economic life of the region, so we must increase efforts to preserve it and if it is possible to improve the quality of water.

#Phytoplankton #cape7 #aftissat #physicochemicalparameters #diatoms #density

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