title: Aquatic plant debris improve phosphorus sorption into sediment under anoxic condition.
abstract: The effects of plant debris on phosphorus sorption by anoxic sediment were investigated. Addition of plant debris significantly enhanced the decrease of soluble relative phosphorus (SRP) in overlying water at both 10 and 30 °C during the 30-day investigation. Both cellulose and glucose, two typical plant components, also clearly enhanced the SRP decrease in anoxic overlying water. The measurement of phosphorus (P) fractions in sediment revealed that the levels of unstable P forms were decreased by plant debris addition, whereas the opposites were true for stable P forms. However, under sterilized condition, plant debris/glucose addition has no effect on the SRP decrease in overlying water. Overall, our results suggested that plant debris improve P sorption into sediment under anoxic condition through a microorganism-mediated mechanism.
authors.affiliation: MOE Key Laboratory of Environment Remediation and Ecosystem Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou, 310058, China.
authors.forename: Chong-Wei
authors.initials: CW
authors.lastname: Jin
authors.forename: Shao-Ting
authors.initials: ST
authors.lastname: Du
authors.forename: Wu-Yuan
authors.initials: WY
authors.lastname: Dong
authors.forename: Jue-Hua
authors.initials: JH
authors.lastname: Wang
authors.forename: Cheng
authors.initials: C
authors.lastname: Shen
authors.forename: Yong-Song
authors.initials: YS
authors.lastname: Zhang
mesh_terms: D005618:Fresh Water / Q000737:chemistry; D019015:Geologic Sediments / Q000737:chemistry*; D010758:Phosphorus / Q000032:analysis* / Q000378:metabolism; D010944:Plants / Q000737:chemistry*; D014866:Waste Products; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000378:metabolism
chemical_list: D014866:Waste Products; D014874:Water Pollutants, Chemical; D010758:Phosphorus