Factor driving heterotrophic dinoflagellate in relation to environment conditions in Kerkennah Islands(eastern coast of Tunisa)

作     者：Mounir Ben Brahim Morsi Feki Wafa Feki-Sahnoun Mabrouka Mahfoudi Asma Hamza 

作者机构：Faculty of Sciences of SfaxRoad of Soukra km 4BP 802-3038 SfaxTunisia National Institute of Sciences and Technologies of the SeaCenter of Sfax-BP 1035-CP.3018.SfaxTunisia 

出 版 物：《Journal of Coastal Life Medicine》 (海岸生命医学杂志（英文版）)

年 卷 期：2015年第9期

页      面：686-690页

学科分类：08[工学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：Supported by the Faculty of Sciences Sfax Tunisia 

主　　题：Heterotrophic dinoflagellate Variability Seasonal Kerkennah Tunisia 

摘      要：Objective:To study the seasonal variability of heterotrophic dinoflagellate in the station of Cercina(southern coast of Tunisia).Methods:Sampling was done in 2007 in Cercina station located in the western coast of Kerkennah(34°41 27 N;11°07 45 E)(Southern Tunisia).Three replicates of water samples were taken during 10 days of each *** variables and nutrients were measured in ***:A significant seasonal difference was observed for temperature and water *** highest values were observed in spring and *** significant seasonal difference was,however,detected for nitrite,nitrate,ammonia,silica and ***-five species of dinoflagellate were identified in the station of *** of dinoflagellates fluctuated between seasons with values showing a significant seasonal and monthly *** highest mean abundance was recorded in spring in April,while the lowest abundance was detected in December in *** granii was the main species contributing to the dissimilarity between spring and winter with 13.98%followed by Peridinium *** 12.5%of dissimilarity and by Polykrikos *** 10.58%.Conclusions:Heterotrophic dinoflagellates proliferate in spring and *** increase was justified by the nutrient *** granii and Polykrikos kofoidii were the main heterotrophic dinoflagellate making difference between seasons and their densities were positively correlated with both temperature and salinity.