DOI: 10.1007/s10533-016-0250-4
Scopus记录号: 2-s2.0-84991108298
论文题名: Phosphorus release from the drying and reflooding of diverse shallow sediments
作者: Kinsman-Costello L.E. ; Hamilton S.K. ; O’Brien J.M. ; Lennon J.T.
刊名: Biogeochemistry
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2016
卷: 130, 期: 2018-01-02 起始页码: 159
结束页码: 176
语种: 英语
英文关键词: Iron
; Phosphorus
; Sediment
; Soil
; Water level fluctuations
; Wetland restoration
Scopus关键词: aquatic ecosystem
; biogeochemistry
; environmental restoration
; eutrophication
; flooding
; iron
; phosphorus
; porewater
; sediment-water interface
; shallow water
; surface water
; wetland management
; Michigan
; United States
英文摘要: Phosphorus (P) retention is an important ecosystem service provided by sediments and soils. However, when shallow aquatic sediments and poorly drained soils dry and re-flood, they can be a source, rather than a sink, of P. Using experimental drying and re-flooding in the laboratory, we assessed the resultant sediment–water P exchange in a biogeochemically diverse set of sediments from 16 sites in Michigan. The direction and magnitude of P exchange to pore waters and surface waters upon re-flooding varied among sediments. Different sediment properties were related to P release to pore water than to P release to overlying surface water, suggesting that different processes control two phases of sediment P release: mobilization from solid to dissolved forms in the sediment pore water; and movement of dissolved P from pore water into overlying surface water. We observed especially high P release in dried and re-flooded sediments with high amounts of loosely sorbed phosphate, suggesting that drained sediments with a legacy of high P loads will be most likely to release P and experience internal eutrophication when re-flooded. The differential responses of sediments suggest that aquatic ecosystem restoration and management for nutrient removal must be evaluated with site-specific knowledge of sediment and soil biogeochemistry. © 2016, Springer International Publishing Switzerland. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83351
Appears in Collections: 气候减缓与适应 气候变化事实与影响
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作者单位: W.K. Kellogg Biological Station, Michigan State University, 3700 East Gull Lake Dr., Hickory Corners, East Lansing, MI, United States; Department of Biological Sciences, Kent State University, P.O. Box 5190, Kent, OH, United States; Department of Biology, Canisius College, 2001 Main St., Buffalo, NY, United States; Department of Biology, Indiana University, 1001 East 3rd Street, Bloomington, IN, United States
Recommended Citation:
Kinsman-Costello L.E.,Hamilton S.K.,O’Brien J.M.,et al. Phosphorus release from the drying and reflooding of diverse shallow sediments[J]. Biogeochemistry,2016-01-01,130(2018-01-02)