Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/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
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ISSN | 0885-6087 |
EISSN | 1099-1085 |
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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