Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR024652 |
Wetland Connectivity Thresholds and Flow Dynamics From Stage Measurements | |
McLaughlin, Daniel L.1; Diamond, Jacob S.1; Quintero, Carlos2; Heffernan, James3; Cohen, Matthew J.4 | |
2019-07-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
卷号 | 55期号:7页码:6018-6032 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Depressional wetlands are dominant features in many low-gradient landscapes, where they provide water storage and exchange. Typical basin morphology enables water storage during drier periods, when surface flow paths are disconnected and exchange is limited to slower groundwater flow paths. Under wetter conditions, wetland stage can exceed surface connection thresholds, activating surface flow paths to downstream waters. Empirical methods are needed to quantify these dynamics and thus to assess their role in landscape hydrology and associated functions. We developed a new water budget-based approach to enumerate connectivity thresholds and flows from stage measurements. We propose that this approach, termed Connectivity and Flow from Stage (CFS), has broad applicability across wetlandscapes. We applied the CFS method in the Big Cypress National Preserve, where we hypothesized that surface connectivity episodes control water and solute flux, with consequences for exported carbonate weathering products and thus for karst landform evolution. Across five study wetlands, this analysis detected surface connectivity thresholds and assessed temporal flow dynamics. Imputed connectivity thresholds were clear from stage-dependent net flow dynamics and aligned well with LiDAR-derived thresholds. Water export occurred overwhelmingly when stage exceeded these thresholds, indicating that water and solute export from these wetlands is dominated by periods of enhanced landscape connectivity. Notably, the presented CFS method can quantify wetland connectivity thresholds from stage data, even without supporting geomorphic information. This approach is useful for understanding hydrologic controls on biogeomorphic evolution in this particular karst landscape, and more broadly for inferring wetland connectivity patterns and magnitudes in other wetlandscape settings. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000481444700047 |
WOS关键词 | GEOGRAPHICALLY ISOLATED WETLANDS ; SURFACE-WATER ; HYDROLOGIC CONNECTIVITY ; STREAMS ; SEEPAGE ; STORAGE ; SHIFTS ; LAKES |
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/184868 |
专题 | 资源环境科学 |
作者单位 | 1.Virginia Tech, Dept Forest Resources & Environm Conservat, Blacksburg, VA 24061 USA; 2.Univ Florida, Soil & Water Sci Dept, Gainesville, FL USA; 3.Duke Univ, Nicholas Sch Environm, Durham, NC USA; 4.Univ Florida, Sch Forest Resources & Conservat, Gainesville, FL USA |
推荐引用方式 GB/T 7714 | McLaughlin, Daniel L.,Diamond, Jacob S.,Quintero, Carlos,et al. Wetland Connectivity Thresholds and Flow Dynamics From Stage Measurements[J]. WATER RESOURCES RESEARCH,2019,55(7):6018-6032. |
APA | McLaughlin, Daniel L.,Diamond, Jacob S.,Quintero, Carlos,Heffernan, James,&Cohen, Matthew J..(2019).Wetland Connectivity Thresholds and Flow Dynamics From Stage Measurements.WATER RESOURCES RESEARCH,55(7),6018-6032. |
MLA | McLaughlin, Daniel L.,et al."Wetland Connectivity Thresholds and Flow Dynamics From Stage Measurements".WATER RESOURCES RESEARCH 55.7(2019):6018-6032. |
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