Arid
DOI10.1002/hyp.7319
Influence of the hyporheic zone on the phosphorus dynamics of a large gravel-bed river, Garonne River, France
Vervier, Philippe1,2; Bonvallet-Garay, Sonia1,2; Sauvage, Sabine1,2; Valett, H. Maurice3; Sanchez-Perez, Jose-Miguel1,2
通讯作者Sauvage, Sabine
来源期刊HYDROLOGICAL PROCESSES
ISSN0885-6087
EISSN1099-1085
出版年2009
卷号23期号:12页码:1801-1812
英文摘要

Phosphorus (P) concentrations in sediments and in surface and interstitial water from three gravel bars in a large river (Garonne River, southern France) were measured daily, downstream of a wastewater treatment plant for a city of 740000 inhabitants (Toulouse). Measurements were made of vertical hydraulic gradient (VHG), total dissolved phosphor-us (TDP), soluble reactive phosphorus (SRP) and total phosphorus (TP) in water and of three extractable forms of phosphorus (water extractable, NaOH extractable and H2SO4 extractable) in hyporheic sediments from the gravel bars. Dissolved phosphorus was the major contributor to TP (74-79%) in both interstitial and surface waters on all sampling dates, and in most cases surface water P concentrations were significantly higher than interstitial concentrations. Hyporheic sediment TP concentrations ranged between 269 and 465 mu g g(-1) and were highest in fine sediment fractions. Acid-extractable P, a non-bioavailable form, represented at least 95% of sediment TP. A positive relationship was observed between VHG and TP in two of the gravel bars, with wells that were strongly downwelling having lower TP concentrations. These results suggest that in downwelling zones, hyporheic sediments can trap surface-derived dissolved P, and that much of this P becomes stored in refractory particulate forms. Bioavailable P is mainly present in dissolved form and only occupies a small fraction of total P, with particulate P comprising the majority of total P. Copyright (c) 2009 John Wiley & Sons, Ltd.


英文关键词large river phosphorus hyporheic zone sediments interstitial water
类型Article
语种英语
国家France ; USA
收录类别SCI-E
WOS记录号WOS:000266958900011
WOS关键词DISSOLVED ORGANIC-CARBON ; SURFACE-WATER ; SPATIAL-DISTRIBUTION ; STREAM ECOSYSTEM ; DESERT STREAM ; LAKE ERIE ; SEDIMENTS ; GROUNDWATER ; TRANSPORT ; EXCHANGE
WOS类目Water Resources
WOS研究方向Water Resources
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/160934
作者单位1.ENSAT, CNRS, Lab Ecol Fonct ECOLAB, F-31326 Castanet Tolosan, France;
2.Univ Toulouse, INP, UPS, ECOLAB Lab Ecol Fonct,ENSAT, F-31326 Castanet Tolosan, France;
3.Virginia Polytech Inst & State Univ, Dept Biol Sci, Blacksburg, VA 24061 USA
推荐引用方式
GB/T 7714
Vervier, Philippe,Bonvallet-Garay, Sonia,Sauvage, Sabine,et al. Influence of the hyporheic zone on the phosphorus dynamics of a large gravel-bed river, Garonne River, France[J],2009,23(12):1801-1812.
APA Vervier, Philippe,Bonvallet-Garay, Sonia,Sauvage, Sabine,Valett, H. Maurice,&Sanchez-Perez, Jose-Miguel.(2009).Influence of the hyporheic zone on the phosphorus dynamics of a large gravel-bed river, Garonne River, France.HYDROLOGICAL PROCESSES,23(12),1801-1812.
MLA Vervier, Philippe,et al."Influence of the hyporheic zone on the phosphorus dynamics of a large gravel-bed river, Garonne River, France".HYDROLOGICAL PROCESSES 23.12(2009):1801-1812.
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