Seasonal Variation of Cochlodinium polykrikoides in the North of Oman Sea （Iranian Waters）

作     者：Fereshteh Saraji Wan Maznah Wan Omar Mahmood Ebrahimi 

作者机构：Department of Ecology Persian Gulf and Oman Sea Ecological Research Institute Bandar Abbas 79167-93165 Iran Department of Biology School of Biological Science Universiti Sains Malaysia Penang 11800 Malaysia 

出 版 物：《Journal of Environmental Science and Engineering(A)》 (环境科学与工程（A）)

年 卷 期：2015年第4卷第2期

页      面：92-98页

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 08[工学] 09[农学] 0903[农学-农业资源与环境] 0713[理学-生态学] 

主　　题：Pre-monsoon post-monsoon coastal and offshore Strait of Hormuz. 

摘      要：This study was carried out to investigate the Cochlodinium polykrikoides fluctuations in the north of Oman Sea during pre- and post-monsoon season in 2008. The study area was divided into 10 transects （TI-T10） from the Strait of Hormuz （T1） to Gwadar （TI0） which cover the whole of the Iranian waters in the Oman Sea. The results showed that at first, Cochlodinium polykrikoides appeared in the northeast part （T10） in the pre-monsoon season, then it spread to other parts of the study area. Cochlodinium polykrikoides was observed in greater abundance in the Strait of Hormuz in the post-monsoon season. The results demonstrated that T10 （transect 10） had the highest abundance in the pre-monsoon season. The Kruskal-Wallis test showed a significant difference among transects （P 〈 0.05）. The present study showed that the abundance of Cochlodinium polykrikoides increased from coastal to offshore waters in the pre-monsoon season; however, in the post-monsoon season, there was a higher abundance in coastal waters compared to the offshore zone. It could be seen that the abundance of Cochlodinium polykrikoides started in offshore waters, then increased in coastal waters. During the pre-monsoon season, water discoloration was not observed, however, the water changed to brown from T 1 to T4 （northwest） and blooms of Cochlodinium polykrikoides was recorded in the post-monsoon season.