title: Temporal and spatial distributions of nutrients under the influence of human activities in Sishili Bay, northern Yellow Sea of China.
abstract: The temporal and spatial distributions of dissolved inorganic nitrogen (DIN), dissolved organic nitrogen (DON), soluble reactive phosphorus (SRP) and dissolved reactive silica (DRSi) together with chlorophyll-a, temperature and salinity were analyzed monthly from December 2008 to March 2010 at four zones in Sishili Bay located in the northern Yellow Sea. The nutrient distribution was impacted by seasonal factors (biotic factors, temperature and wet deposition), physical factors (water exchange) and anthropogenic loadings. The seasonal variations of nutrients were mainly determined by the seasonal factors and the spatial distribution of nutrients was mainly related to water exchange. Anthropogenic loadings for DIN, SRP and DRSi were mainly from point sources, but for DON, non-point sources were also important. Nutrient limitation has changed from DIN in 1997 to SRP and DRSi in 2010, and this has resulted in changes in the dominant red tide species from diatom to dinoflagellates.
authors.affiliation: Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, 264003 Yantai, Shandong, PR China.
authors.forename: Yujue
authors.initials: Y
authors.lastname: Wang
authors.forename: Dongyan
authors.initials: D
authors.lastname: Liu
authors.forename: Zhijun
authors.initials: Z
authors.lastname: Dong
authors.forename: Baoping
authors.initials: B
authors.lastname: Di
authors.forename: Xuhong
authors.initials: X
authors.lastname: Shen
mesh_terms: D061006:Bays / Q000737:chemistry*; D002681:China; D002734:Chlorophyll / Q000032:analysis; D000077194:Chlorophyll A; D004784:Environmental Monitoring; D006802:Human Activities; D006801:Humans; D009584:Nitrogen / Q000032:analysis; D009792:Oceans and Seas; D010758:Phosphorus / Q000032:analysis; D012621:Seasons; D012623:Seawater; D013696:Temperature; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014877:Water Pollution, Chemical / Q000032:analysis / Q000706:statistics & numerical data*
chemical_list: D014874:Water Pollutants, Chemical; D002734:Chlorophyll; D010758:Phosphorus; D009584:Nitrogen; D000077194:Chlorophyll A