Assessing the hydroregime of an archetypal riverine wet meadow in the central Great Plains using time‐lapse imagery

Abstract Wet meadows are a declining and increasingly degraded ecosystem type. They contribute numerous ecosystem services, including nutrient cycling, water storage, and filtration, and provision of wildlife habitat, particularly for wetland‐dependent species such as the Whooping Crane (Grus americ...

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Autores principales: Emma M. Brinley Buckley, Andrew J. Caven, Joshua D. Wiese, Mary J. Harner
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Publicado: Wiley 2021
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spelling oai:doaj.org-article:fc3943aa934d43b3b2e3f1fe875a11362021-11-29T07:06:42ZAssessing the hydroregime of an archetypal riverine wet meadow in the central Great Plains using time‐lapse imagery2150-892510.1002/ecs2.3829https://doaj.org/article/fc3943aa934d43b3b2e3f1fe875a11362021-11-01T00:00:00Zhttps://doi.org/10.1002/ecs2.3829https://doaj.org/toc/2150-8925Abstract Wet meadows are a declining and increasingly degraded ecosystem type. They contribute numerous ecosystem services, including nutrient cycling, water storage, and filtration, and provision of wildlife habitat, particularly for wetland‐dependent species such as the Whooping Crane (Grus americana). Conservation and restoration of wet meadows rely on understanding their hydrology but characterization of wet meadow hydroregimes is difficult given their hydrologic complexity, high variability, and distinct regional differences. To address this challenge, we used ground‐based time‐lapse imagery to assess inundation dynamics of an archetypal wet meadow over a six‐year period in the Central Platte River Valley, Nebraska, USA. We analyzed over 6500 images from March 2011 to May 2017 in the open‐source java‐based image processing software ImageJ. We also obtained data on groundwater, streamflow, precipitation, and evapotranspiration. We assessed the relationship between wet meadow inundation and hydrologic variables using wavelet coherence to look at fluctuations across a time–frequency spectrum and used random forest to identify seasonally specific variables of importance. We found hydroperiod, the duration surface water ponded within the wet meadow, had a mean of 141 d, on average lasting from 10 December to 1 May, but varied annually. Inundation generally peaked in the early spring, on average 10 March, but demonstrated a bimodal distribution, peaking again in late spring during wetter years. While inundation responded rapidly to precipitation events, it was highly related to streamflow, while an elevated groundwater table was necessary for sustained inundation. Overall, our study provided a comprehensive hydrological characterization of a reference wet meadow and demonstrated the utility of time‐lapse cameras for high‐resolution monitoring and assessment of highly variable wetland systems. Considering the uncertainties surrounding land‐ and water‐use changes, climate change, and the increasing demand for freshwater resources by growing human communities, understanding functional wet meadow hydroregimes and interrelated drivers is essential to inform wet meadow restoration, conservation, and management efforts.Emma M. Brinley BuckleyAndrew J. CavenJoshua D. WieseMary J. HarnerWileyarticlehydrologic regimehydrologyimage analysisinundationNebraskaPlatte RiverEcologyQH540-549.5ENEcosphere, Vol 12, Iss 11, Pp n/a-n/a (2021)
institution DOAJ
collection DOAJ
language EN
topic hydrologic regime
hydrology
image analysis
inundation
Nebraska
Platte River
Ecology
QH540-549.5
spellingShingle hydrologic regime
hydrology
image analysis
inundation
Nebraska
Platte River
Ecology
QH540-549.5
Emma M. Brinley Buckley
Andrew J. Caven
Joshua D. Wiese
Mary J. Harner
Assessing the hydroregime of an archetypal riverine wet meadow in the central Great Plains using time‐lapse imagery
description Abstract Wet meadows are a declining and increasingly degraded ecosystem type. They contribute numerous ecosystem services, including nutrient cycling, water storage, and filtration, and provision of wildlife habitat, particularly for wetland‐dependent species such as the Whooping Crane (Grus americana). Conservation and restoration of wet meadows rely on understanding their hydrology but characterization of wet meadow hydroregimes is difficult given their hydrologic complexity, high variability, and distinct regional differences. To address this challenge, we used ground‐based time‐lapse imagery to assess inundation dynamics of an archetypal wet meadow over a six‐year period in the Central Platte River Valley, Nebraska, USA. We analyzed over 6500 images from March 2011 to May 2017 in the open‐source java‐based image processing software ImageJ. We also obtained data on groundwater, streamflow, precipitation, and evapotranspiration. We assessed the relationship between wet meadow inundation and hydrologic variables using wavelet coherence to look at fluctuations across a time–frequency spectrum and used random forest to identify seasonally specific variables of importance. We found hydroperiod, the duration surface water ponded within the wet meadow, had a mean of 141 d, on average lasting from 10 December to 1 May, but varied annually. Inundation generally peaked in the early spring, on average 10 March, but demonstrated a bimodal distribution, peaking again in late spring during wetter years. While inundation responded rapidly to precipitation events, it was highly related to streamflow, while an elevated groundwater table was necessary for sustained inundation. Overall, our study provided a comprehensive hydrological characterization of a reference wet meadow and demonstrated the utility of time‐lapse cameras for high‐resolution monitoring and assessment of highly variable wetland systems. Considering the uncertainties surrounding land‐ and water‐use changes, climate change, and the increasing demand for freshwater resources by growing human communities, understanding functional wet meadow hydroregimes and interrelated drivers is essential to inform wet meadow restoration, conservation, and management efforts.
format article
author Emma M. Brinley Buckley
Andrew J. Caven
Joshua D. Wiese
Mary J. Harner
author_facet Emma M. Brinley Buckley
Andrew J. Caven
Joshua D. Wiese
Mary J. Harner
author_sort Emma M. Brinley Buckley
title Assessing the hydroregime of an archetypal riverine wet meadow in the central Great Plains using time‐lapse imagery
title_short Assessing the hydroregime of an archetypal riverine wet meadow in the central Great Plains using time‐lapse imagery
title_full Assessing the hydroregime of an archetypal riverine wet meadow in the central Great Plains using time‐lapse imagery
title_fullStr Assessing the hydroregime of an archetypal riverine wet meadow in the central Great Plains using time‐lapse imagery
title_full_unstemmed Assessing the hydroregime of an archetypal riverine wet meadow in the central Great Plains using time‐lapse imagery
title_sort assessing the hydroregime of an archetypal riverine wet meadow in the central great plains using time‐lapse imagery
publisher Wiley
publishDate 2021
url https://doaj.org/article/fc3943aa934d43b3b2e3f1fe875a1136
work_keys_str_mv AT emmambrinleybuckley assessingthehydroregimeofanarchetypalriverinewetmeadowinthecentralgreatplainsusingtimelapseimagery
AT andrewjcaven assessingthehydroregimeofanarchetypalriverinewetmeadowinthecentralgreatplainsusingtimelapseimagery
AT joshuadwiese assessingthehydroregimeofanarchetypalriverinewetmeadowinthecentralgreatplainsusingtimelapseimagery
AT maryjharner assessingthehydroregimeofanarchetypalriverinewetmeadowinthecentralgreatplainsusingtimelapseimagery
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