PRIMARY PRODUCTIVITY OF THI NAI LAGOON, BINH DINH PROVINCE
Keywords:Primary productivity, photosynthesis, nutrients, organic carbon.
AbstractExperiments of photosynthesis assessment of phytoplankton and seaweed had been carried out in Thi Nai lagoon in rainy season (October, 2013) and dry season (May, 2014). The results showed that primary productivity of phytoplankton was 8 - 149 mgC/m3/day, and that productivity of seaweed Gracilaria verrucosa was 0.139 - 0.197 mg C/g seaweed/day. During photosynthesis process of phytoplankton, an amount of 1.42 - 1.6 tons mineral nitrogen/day and 0.14 - 0.17 tons phosphate/day was consumed in the whole lagoon. The photosynthesis process of seaweed also consumed an amount of 0.74 - 0.83 tons/day of inorganic nitrogen (including nitrate, nitrite, and ammonium), and 0.041 - 0.045 tons/day of phosphate in the whole lagoon.
Cao Thị Thu Trang, Nguyễn Thị Phương Hoa, 2010. Nghiên cứu sức tải môi trường sông Bạch Đằng. Đăng trong Tuyển tập “Hội nghị Khoa học kỷ niệm 35 năm Viện Khoa học và Công nghệ Việt Nam - Hà Nội, ngày 26/10/2010. Tr. 162-168.