Streambank Legacy Sediments in Surface Waters: Phosphorus Sources or Sinks?

被引：14
作者：
Inamdar, Shreeram [1 ]
Sienkiewicz, Nathan [2 ]
Lutgen, Alyssa [2 ]
Jiang, Grant [2 ]
Kan, Jinjun [3 ]
机构：
[1] Univ Delaware, Plant & Soil Sci, Newark, DE 19716 USA
[2] Univ Delaware, Water Sci & Policy Grad Program, Newark, DE 19716 USA
[3] Stroud Water Res Ctr, Avondale, PA 19311 USA
来源：
SOIL SYSTEMS | 2020年 / 4卷 / 02期
关键词：
legacy sediments; phosphorus; equilibrium phosphorus concentration; sorption; desorption; anoxic; water quality; PHOSPHATE SORPTION; FLUVIAL SEDIMENT; FRESH-WATER; HOT-SPOTS; RIVER; SOIL; RESTORATION; NUTRIENT; EUTROPHICATION; MOBILIZATION;
D O I：
10.3390/soilsystems4020030
中图分类号：
S15 [土壤学];
学科分类号：
0903 ; 090301 ;
摘要：
Streambank legacy sediments can contribute substantial amounts of sediments to Mid-Atlantic waterways. However, there is uncertainty about the sediment-bound P inputs and the fate of legacy sediment P in surface waters. We compared legacy sediment P concentrations against other streambank sediments and upland soils and evaluated a variety of P indices to determine if legacy sediments are a source or sink of P to surface waters. Legacy sediments were collected from 15 streambanks in the mid-Atlantic USA. Total P and M3P concentrations and % degree of phosphorus saturation (DPS) values for legacy sediments were lower than those for upland soils. % DPS values for legacy sediments were below the water quality threshold for P leaching. Phosphorus sorption index (PSI) values for legacy sediments indicated a large capacity for P sorption. On the other hand, equilibrium phosphorus concentration (EPC0) for legacy sediments suggested that they could be a source or a sink depending on stream water P concentrations. Anoxic conditions resulted in a greater release of P from legacy sediments compared to oxic conditions. These results suggest that legacy sediment P behavior could be highly variable and watershed models will need to account for this variability to reliably quantify the source-sink behavior of legacy sediments in surface waters.
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页码：1 / 20
页数：20
相关论文
共 75 条
  • [1] [Anonymous], 1995, AM FISH SOC MONOGR
  • [2] PHOSPHATE SORPTION INDEX FOR SOILS
    BACHE, BW
    WILLIAMS, EG
    [J]. JOURNAL OF SOIL SCIENCE, 1971, 22 (03): : 289 - +
  • [3] Baldwin DS, 2000, REGUL RIVER, V16, P457, DOI 10.1002/1099-1646(200009/10)16:5<457::AID-RRR597>3.0.CO
  • [4] 2-B
  • [5] Bank-derived material dominates fluvial sediment in a suburban Chesapeake Bay watershed
    Cashman, Matthew J.
    Gellis, Allen
    Sanisaca, Lillian Gorman
    Noe, Gregory B.
    Cogliandro, Vanessa
    Baker, Anna
    [J]. RIVER RESEARCH AND APPLICATIONS, 2018, 34 (08) : 1032 - 1044
  • [6] CHAMBERS RM, 1990, BIOGEOCHEMISTRY, V10, P37
  • [7] The role of phosphorus in the eutrophication of receiving waters: A review
    Correll, DL
    [J]. JOURNAL OF ENVIRONMENTAL QUALITY, 1998, 27 (02) : 261 - 266
  • [8] Dissolved phosphorus concentrations and sediment interactions in effluent-dominated Ozark streams
    Ekka, S. A.
    Hagard, B. E.
    Matlock, M. D.
    Chaubey, I.
    [J]. ECOLOGICAL ENGINEERING, 2006, 26 (04) : 375 - 391
  • [9] Point sources and agricultural practices control spatial-temporal patterns of orthophosphate in tributaries to Chesapeake Bay
    Fanelli, Rosemary M.
    Blomquist, Joel D.
    Hirsch, Robert M.
    [J]. SCIENCE OF THE TOTAL ENVIRONMENT, 2019, 652 : 422 - 433
  • [10] Assessing stream restoration effectiveness at reducing nitrogen export to downstream waters
    Filoso, Solange
    Palmer, Margaret A.
    [J]. ECOLOGICAL APPLICATIONS, 2011, 21 (06) : 1989 - 2006
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