title: An investigation of the space distribution of Ulva microscopic propagules and ship-based experiment of mitigation using modified clay.
abstract: Previous studies suggested that the removal of Ulva microscopic propagules (UMP) from cradle water might restrict the formation and expansion of green tides in the Yellow Sea, China. In this study, the distribution characteristics of UMP in the southern Yellow Sea was investigated, and then a flocculation experiment of UMP using modified clay (MC) was conducted at a selected station of the research cruise. The results indicated that the distribution of green algae thalli is one of the main factors that directly influence UMP distribution. UMP density was strongly negatively correlated with the distance between the sampling station and the centre of the area containing floating Ulva (r=-0.618***, n=83). >80% of the UMP was removed from the water column after MC application at a concentration of 0.1g/L, and MC applied at a concentration of 0.5g/L reduced the germination rate to 0.3%.
authors.affiliation: Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, People's Republic of China; University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China; Laboratory of Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, People's Republic of China.
authors.forename: Jing
authors.initials: J
authors.lastname: Li
authors.affiliation: Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, People's Republic of China; Laboratory of Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, People's Republic of China. Electronic address: songxx@qdio.ac.cn.
authors.forename: Xiuxian
authors.initials: X
authors.lastname: Song
authors.affiliation: Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, People's Republic of China; University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China; Laboratory of Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, People's Republic of China.
authors.forename: Yue
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China; Research & Development Centre of Marine Environment Engineering and Technology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, People's Republic of China.
authors.forename: Jun
authors.initials: J
authors.lastname: Pan
authors.affiliation: Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, People's Republic of China; Laboratory of Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, People's Republic of China. Electronic address: zyu@qdio.ac.cn.
authors.forename: Zhiming
authors.initials: Z
authors.lastname: Yu
mesh_terms: D000538:Aluminum Silicates; D002681:China; D000460:Chlorophyta; D000077215:Clay; D005068:Eutrophication; D005427:Flocculation; D009792:Oceans and Seas; D012767:Ships; D062206:Spatial Analysis; D044445:Ulva
chemical_list: D000538:Aluminum Silicates; D000077215:Clay
keywords: Green tide; Microscopic propagules; Modified clay; Ulva; Yellow Sea