期刊名称：International Journal of Environment and Geoinformatics
电子版ISSN：2148-9173
出版年度：2021
卷号：8
期号：4
页码：414-422
语种：English
出版社：IJEGEO
摘要：In the intense mucilage formation observed in the Sea of Marmara in 2021, Phaeocystis pouchetii (Prymnesiophyceae) together withSkeletonema costatum, Cylindrotheca closterium, Thalassiosira rotula (Bacillariophyceae), and Gonyaulax fragilis (Dinophyceae)were detected in the foamy mucilage in the surface layer, and Chrysoreinhardia giraudii and Nematochrysopsis marina(Chrysophyceae), which are known to produce filamentous mucilage in benthic habitat. In addition, with the contribution of thesegroups, a higher cell abundance (2.1×107 cells/L) and chlorophyll-a value (15.9 µg/L) was reached than the mucilage eventexperienced in previous years. In the microscopic observations, typical dominant genera of the Sea of Marmara such asProtoperidinium and Tripos were observed very little in terms of species composition, and the fact that three previously unobservedspecies became dominant and the Cyanophyceae group was represented by different species indicated that phytoplanktoncomposition changed in the mucilage formation in this period. The changing species composition with these three species that areknown to make mucilage and which are new records for the Sea of Marmara point to the transportation by ship ballast waters or theinflow of brackish water with heavy rains. It is recommended to take the necessary measures to control domestic and industrialwastes and terrestrial inputs, which cause these species to reach numerical abundance and form mucilage, to carry out fisheries in acontrolled manner, and to prevent the discharge of ship ballast waters and bilge waters.
关键词：Mucilage;Phaeocystis pouchetii;Chrysoreinhardia giraudii;Nematochrysopsis marina;Sea of Marmara
