Abstract

A study was conducted on Hydrographical Studies on Mangroves Ecosystem of the Red Sea Coast of Yemen from Al-Salif to Bab-el-Mandeb Strait, during the months of January, April, August and Octobe,r chosen to represent the four seasons of a full year 2013. Data on temperature, salinity and pH were obtained from the field. Dissolved oxygen was determined in the laboratory by Winkler method. Air temperature varied between (28.3 - 36.6) °C, with mean value 31.89°C; water temperature ranged between (27.3 - 35.6)°C with mean value 31.27 °C; salinity ranged between ( 42 - 54) ‰, with mean value 45.68 ‰; pH values ranged between (7.5 - 8.04), with the mean value 7.74 pH; dissolved oxygen values ranged between (3.2 - 8.2 ) mg /L, with the mean value 5.83 mg /L. This study is baseline data toward future ecological study, conservation and management of the resources of this economically important wetland in Red Sea Coast of Yemen.