title: Evaluation of the potential role of the macroalga Laminaria japonica for alleviating coastal eutrophication.
abstract: The rapid development of human activities has caused serious eutrophication of coastal waters in China in the recent decades. The study of the biofiltration capacity of Laminaria japonica under laboratory conditions showed a significant nutrient uptake. After 36 h of incubation, around 42%, 46%, 44% of N and 45%, 42%, 35% of P were removed from three gradients of medium concentrations, respectively. In the conditions of different ratios of N/P and NO(3)-N/NH(4)-N, the optimum N/P ratio for nutrient uptake was 7.4 and L. japonica preferred NO(3)-N rather than NH(4)-N as nitrogen source. Temperature and irradiance affected uptake rates significantly. The maximal N uptake rate appeared at 10°C and 18 μmol photons m(-2)s(-1) and the maximal P uptake rate was found at 15°C and 144 μmol photons m(-2)s(-1). Moreover, further studies were needed to investigate the bioremediation potential of L. japonica in the open sea.
authors: Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China.
authors: Dong
authors: D
authors: Xu
authors: Zhengquan
authors: Z
authors: Gao
authors: Xiaowen
authors: X
authors: Zhang
authors: Zhanhui
authors: Z
authors: Qi
authors: Chunxiao
authors: C
authors: Meng
authors: Zhimeng
authors: Z
authors: Zhuang
authors: Naihao
authors: N
authors: Ye
mesh_terms: D002478:Cells, Cultured; D005068:Eutrophication / Q000502:physiology*; D005069:Evaluation Studies as Topic; D007795:Laminaria / Q000378:metabolism*; D009566:Nitrates / Q000032:analysis; D009584:Nitrogen / Q000032:analysis; D010758:Phosphorus / Q000032:analysis; D000644:Quaternary Ammonium Compounds / Q000032:analysis; D012621:Seasons; D012623:Seawater; D012624:Seaweed / Q000378:metabolism*; D013696:Temperature; D013997:Time Factors
chemical_list: D009566:Nitrates; D000644:Quaternary Ammonium Compounds; D010758:Phosphorus; D009584:Nitrogen