GSTDTAP  > 资源环境科学
DOI10.1002/2017WR021016
Estimating Wetland Connectivity to Streams in the Prairie Pothole Region: An Isotopic and Remote Sensing Approach
Brooks, J. R.1; Mushet, D. M.2; Vanderhoof, M. K.3; Leibowitz, S. G.1; Christensen, J. R.4; Neff, B. P.5; Rosenberry, D. O.5; Rugh, W. D.1; Alexander, L. C.6
2018-02-01
发表期刊WATER RESOURCES RESEARCH
ISSN0043-1397
EISSN1944-7973
出版年2018
卷号54期号:2页码:955-977
文章类型Article
语种英语
国家USA
英文摘要

Understanding hydrologic connectivity between wetlands and perennial streams is critical to understanding the reliance of stream flow on inputs from wetlands. We used the isotopic evaporation signal in water and remote sensing to examine wetland-stream hydrologic connectivity within the Pipestem Creek watershed, North Dakota, a watershed dominated by prairie-pothole wetlands. Pipestem Creek exhibited an evaporated-water signal that had approximately half the isotopic-enrichment signal found in most evaporatively enriched prairie-pothole wetlands. Groundwater adjacent to Pipestem Creek had isotopic values that indicated recharge from winter precipitation and had no significant evaporative enrichment, indicating that enriched surface water did not contribute significantly to groundwater discharging into Pipestem Creek. The estimated surface water area necessary to generate the evaporation signal within Pipestem Creek was highly dynamic, varied primarily with the amount of discharge, and was typically greater than the immediate Pipestem Creek surface water area, indicating that surficial flow from wetlands contributed to stream flow throughout the summer. We propose a dynamic range of spilling thresholds for prairie-pothole wetlands across the watershed allowing for wetland inputs even during low-flow periods. Combining Landsat estimates with the isotopic approach allowed determination of potential (Landsat) and actual (isotope) contributing areas in wetland-dominated systems. This combined approach can give insights into the changes in location and magnitude of surface water and groundwater pathways over time. This approach can be used in other areas where evaporation from wetlands results in a sufficient evaporative isotopic signal.


Plain Language Summary Connectivity of wetlands within watersheds is critical to wetland function at local-to-landscape scales. However, actual measures of connectivity between wetlands and streams at the watershed scale are difficult to make, but critical for quantifying these functions, and for supporting policy and decision making. In this manuscript, we combine and compare direct field measurements of connectivity using stable isotopes of water, and remotely sensed measurements of connectivity using Landsat data. We found that prairie-pothole wetlands contributed significant amounts of water to the perennial stream from high to low-flow conditions. This wetland water flowed through surface water connections and not through groundwater flow paths. Hydrologic connectivity between prairie-pothole wetlands and the stream was dynamic, fluctuating with streamflow. Combining the isotopic and Landsat approaches to estimating contributing area appears to be a promising technique for determining potential and actual contributing areas in these flat wetland-dominated systems.


领域资源环境
收录类别SCI-E
WOS记录号WOS:000428474500017
WOS关键词GEOGRAPHICALLY ISOLATED WETLANDS ; CONTERMINOUS UNITED-STATES ; COTTONWOOD LAKE AREA ; NORTH-DAKOTA ; HYDROLOGIC CONNECTIVITY ; METEORIC PRECIPITATION ; HYDROGEN ISOTOPES ; STABLE ISOTOPES ; GREAT-PLAINS ; WATER
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
被引频次:42[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/19963
专题资源环境科学
作者单位1.US EPA, Natl Hlth & Environm Effects Res Lab, Western Ecol Div, Corvallis, OR 97333 USA;
2.US Geol Survey, Northern Prairie Wildlife Res Ctr, Jamestown, ND USA;
3.US Geol Survey, Geosci & Environm Change Sci Ctr, Lakewood, CO 80225 USA;
4.US EPA, Natl Exposure Res Lab, Las Vegas, NV 89193 USA;
5.US Geol Survey, Natl Res Program, Lakewood, CO 80225 USA;
6.US EPA, Natl Ctr Environm Assessment, Arlington, VA USA
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GB/T 7714
Brooks, J. R.,Mushet, D. M.,Vanderhoof, M. K.,et al. Estimating Wetland Connectivity to Streams in the Prairie Pothole Region: An Isotopic and Remote Sensing Approach[J]. WATER RESOURCES RESEARCH,2018,54(2):955-977.
APA Brooks, J. R..,Mushet, D. M..,Vanderhoof, M. K..,Leibowitz, S. G..,Christensen, J. R..,...&Alexander, L. C..(2018).Estimating Wetland Connectivity to Streams in the Prairie Pothole Region: An Isotopic and Remote Sensing Approach.WATER RESOURCES RESEARCH,54(2),955-977.
MLA Brooks, J. R.,et al."Estimating Wetland Connectivity to Streams in the Prairie Pothole Region: An Isotopic and Remote Sensing Approach".WATER RESOURCES RESEARCH 54.2(2018):955-977.
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