Evaluation of biochemical components of Ulva pertusa Kjellman by seasonal variations

Abstract

In recent years Ulva pertusa is known to cause eutrophication in worldwide and have become even more frequent in the coastal waters of Jeju. This study, we confirmed Seasonal variations on organic and inorganic components of U. pertusa with environmental factors. The environmental parameters have shown a clear seasonal variation. The high fluctuating seasonal periods have been observed during from Jun to October. The Organic components such as nitrogen, carbon, amino acid, protein and lipid contents in tissue showed higher values in spring and lower values in summer. These values confirmed negative correlation with temperature and positive correlation with salinity(p<0.05). On the contrary, the maximum ash contents occurred during summer and decreased during autumn-winter. It also related to environmental effect by negative correlation with temperature (p< 0.01) and positive correlation with salinity (p<0.001). Especially, Ca and Fe contents of major element and Cu and Zn contents of trace element observed high amount compare with other elements in summer season. These patterns were increased sharply towards summer and the decreased during in autumn-winter months. Carbohydrate contents did not showed correlation of temperature and salinity (p> 0.05). This study determined biochemical compositions values of U. pertusa by identifying their organic and inorganic components on the seasonal variations. We suggest that the environmental factors. The environmental parameters have shown a clear seasonal variation. The high fluctuating seasonal periods have been observed during from Jun to October. The Organic components such as nitrogen, carbon, amino acid, protein and lipid contents in tissue showed higher values in spring and lower values in summer. These values confirmed negative correlation with temperature and positive correlation with salinity(p<0.05). On the contrary, the maximum ash contents occurred during summer and decreased during autumn-winter. It also related to environmental effect by negative correlation with temperature (p< 0.01) and positive correlation with salinity (p<0.001). Especially, Ca and Fe contents of major element and Cu and Zn contents of trace element observed high amount compare with other elements in summer season. These patterns were increased sharply towards summer and the decreased during in autumn-winter months. Carbohydrate contents did not showed correlation of temperature and salinity (p> 0.05). This study determined biochemical compositions values of U. pertusa by identifying their organic and inorganic components on the seasonal variations. We suggest that the