Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016WR020202 |
Fine particle retention within stream storage areas at base flow and in response to a storm event | |
Drummond, J. D.1,2; Larsen, L. G.3,4; Gonzalez-Pinzon, R.5; Packman, A. I.2; Harvey, J. W.3 | |
2017-07-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2017 |
卷号 | 53期号:7 |
文章类型 | Article |
语种 | 英语 |
国家 | Spain; USA |
英文摘要 | Fine particles (1-100 mu m), including particulate organic carbon (POC) and fine sediment, influence stream ecological functioning because they may contain or have a high affinity to sorb nitrogen and phosphorus. These particles are immobilized within stream storage areas, especially hyporheic sediments and benthic biofilms. However, fine particles are also known to remobilize under all flow conditions. This combination of downstream transport and transient retention, influenced by stream geomorphology, controls the distribution of residence times over which fine particles influence stream ecosystems. The main objective of this study was to quantify immobilization and remobilization rates of fine particles in a third-order sand-and-gravel bed stream (Difficult Run, Virginia, USA) within different geomorphic units of the stream (i.e., pool, lateral cavity, and thalweg). During our field injection experiment, a thunderstorm-driven spate allowed us to observe fine particle dynamics during both base flow and in response to increased flow. Solute and fine particles were measured within stream surface waters, pore waters, sediment cores, and biofilms on cobbles. Measurements were taken at four different subsurface locations with varying geomorphology and at multiple depths. Approximately 68% of injected fine particles were retained during base flow until the onset of the spate. Retention was evident even after the spate, with 15.4% of the fine particles deposited during base flow still retained within benthic biofilms on cobbles and 14.9% within hyporheic sediment after the spate. Thus, through the combination of short-term remobilization and long-term retention, fine particles can serve as sources of carbon and nutrients to downstream ecosystems over a range of time scales. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000407895000028 |
WOS关键词 | PARTICULATE ORGANIC-MATTER ; HYPORHEIC ZONE ; TRANSIENT STORAGE ; CURRENT KNOWLEDGE ; MOUNTAIN STREAM ; BED SEDIMENT ; POROUS-MEDIA ; MASS-BALANCE ; TRANSPORT ; EXCHANGE |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/20098 |
专题 | 资源环境科学 |
作者单位 | 1.Ctr Adv Studies Blanes CEAB CSIC, Integrat Freshwater Ecol Grp, Blanes, Girona, Spain; 2.Northwestern Univ, Dept Civil & Environm Engn, Evanston, IL 60208 USA; 3.US Geol Survey, Natl Res Program, 959 Natl Ctr, Reston, VA 22092 USA; 4.Univ Calif Berkeley, Dept Geog, Berkeley, CA 94720 USA; 5.Univ New Mexico, Dept Civil Engn, Albuquerque, NM 87131 USA |
推荐引用方式 GB/T 7714 | Drummond, J. D.,Larsen, L. G.,Gonzalez-Pinzon, R.,et al. Fine particle retention within stream storage areas at base flow and in response to a storm event[J]. WATER RESOURCES RESEARCH,2017,53(7). |
APA | Drummond, J. D.,Larsen, L. G.,Gonzalez-Pinzon, R.,Packman, A. I.,&Harvey, J. W..(2017).Fine particle retention within stream storage areas at base flow and in response to a storm event.WATER RESOURCES RESEARCH,53(7). |
MLA | Drummond, J. D.,et al."Fine particle retention within stream storage areas at base flow and in response to a storm event".WATER RESOURCES RESEARCH 53.7(2017). |
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