title: Changes to the biomass and species composition of Ulva sp. on Porphyra aquaculture rafts, along the coastal radial sandbank of the Southern Yellow Sea.
abstract: Compositions, changes and biomass of attached Ulva species on Porphyra rafts along the radial sandbank in the Yellow Sea were investigated, and potential contributions to green tides was analyzed. Ulva prolifera, Ulva flexuosa and Ulva linza were all appeared throughout the investigated period. U. prolifera and U. flexuosa dominated attached Ulva population on Porphyra rafts. Attached Ulva species biomass showed obviously spatial and temporal variations. Temperature, Ulva microscopic propagules and human activities were main factors to influence attached Ulva species biomass. The total attached Ulva species biomass was more than 20,000 fresh weight tons in April, and the green tide causative species U. prolifera accounted 51.03% in April 2013 before green tides occurred. The high biomass of attached Ulva species would contribute most to green tides in the Yellow Sea. But how attached Ulva species on Porphyra rafts contributing to green tides in the Yellow Sea should be further studied.
authors.affiliation: The First Institute of Oceanography, State Oceanic Administration (SOA), Qingdao, Shandong Province 266061, PR China; College of Fisheries and Life Sciences, Shanghai Ocean University, Shanghai 201306, PR China; Maine Scientific Research Institute, Shanghai Ocean University, Shanghai 201306, PR China.
authors.forename: Yuanzi
authors.initials: Y
authors.lastname: Huo
authors.affiliation: College of Fisheries and Life Sciences, Shanghai Ocean University, Shanghai 201306, PR China; Maine Scientific Research Institute, Shanghai Ocean University, Shanghai 201306, PR China.
authors.forename: Hongbin
authors.initials: H
authors.lastname: Han
authors.affiliation: The First Institute of Oceanography, State Oceanic Administration (SOA), Qingdao, Shandong Province 266061, PR China.
authors.forename: Honghua
authors.initials: H
authors.lastname: Shi
authors.affiliation: College of Fisheries and Life Sciences, Shanghai Ocean University, Shanghai 201306, PR China; Maine Scientific Research Institute, Shanghai Ocean University, Shanghai 201306, PR China.
authors.forename: Hailong
authors.initials: H
authors.lastname: Wu
authors.affiliation: College of Fisheries and Life Sciences, Shanghai Ocean University, Shanghai 201306, PR China; Maine Scientific Research Institute, Shanghai Ocean University, Shanghai 201306, PR China.
authors.forename: Jianheng
authors.initials: J
authors.lastname: Zhang
authors.affiliation: College of Fisheries and Life Sciences, Shanghai Ocean University, Shanghai 201306, PR China; Maine Scientific Research Institute, Shanghai Ocean University, Shanghai 201306, PR China.
authors.forename: Kefeng
authors.initials: K
authors.lastname: Yu
authors.affiliation: East China Sea Environmental Monitoring Center of State Oceanic Administration, Shanghai 200137, China.
authors.forename: Ren
authors.initials: R
authors.lastname: Xu
authors.affiliation: East China Sea Environmental Monitoring Center of State Oceanic Administration, Shanghai 200137, China.
authors.forename: Caicai
authors.initials: C
authors.lastname: Liu
authors.affiliation: East China Sea Environmental Monitoring Center of State Oceanic Administration, Shanghai 200137, China.
authors.forename: Zhenglong
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: East China Sea Environmental Monitoring Center of State Oceanic Administration, Shanghai 200137, China.
authors.forename: Kefu
authors.initials: K
authors.lastname: Liu
authors.affiliation: College of Fisheries and Life Sciences, Shanghai Ocean University, Shanghai 201306, PR China; Maine Scientific Research Institute, Shanghai Ocean University, Shanghai 201306, PR China. Electronic address: pmhe@shou.edu.cn.
authors.forename: Peimin
authors.initials: P
authors.lastname: He
authors.affiliation: The First Institute of Oceanography, State Oceanic Administration (SOA), Qingdao, Shandong Province 266061, PR China.
authors.forename: Dewen
authors.initials: D
authors.lastname: Ding
mesh_terms: D017756:Aquaculture / Q000379:methods*; D018533:Biomass; D005068:Eutrophication; D006801:Humans; D044664:Porphyra / Q000254:growth & development*; D013696:Temperature; D044445:Ulva / Q000145:classification* / Q000254:growth & development
keywords: Attached green algae; Green tides; Porphyra rafts; Radial sandbank; Ulva prolifera; Yellow Sea