Impact of the hydrological regime and forestry operations on the fluxes of suspended sediment and bedload of a small middle-mountain catchment

Cotel, Solenn; Viville, Daniel; Benarioumlil, Sylvain; Ackerer, Philippe; Pierret, Marie‐Claire

doi:10.1016/j.scitotenv.2020.140228

Cited by 9 publications

(4 citation statements)

References 108 publications

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“…We can thus deduce that in the Strengbach, the stream is perennial not because the dynamic storage drains slowly, but because the watershed's subsurface is frequently and sufficiently refilled by new water (sustained turnover). Anthropogenic impacts are more limited in the Strengbach watershed and are restricted to forest management within a mountain landscape unaffected by agriculture or buildings (Cotel et al., 2020; Pierret et al., 2018). The absence of soil compaction from agricultural activities preserved the high infiltration capacity of sandy soils, in turn favoring groundwater recharge and stream baseflow.…”

Section: Discussionmentioning

confidence: 99%

“…For the Strengbach, the simulated multiyear average fluxes indicate that the average rainfall of 1,400 mm is partitioned between approximately 800 mm of stream water discharge, 50 mm of soil evaporation, 150 mm of vegetation transpiration and 400 mm of vegetation interception (Figures 7c and 11c). The role of vegetation interception in the ET component was also independently documented by interception and sap flow measurements (Viville et al, 1993), while the dominance of stream outflow at the watershed scale was investigated by hydroclimatic budgets (Cotel et al, 2020;Pierret et al, 2018).…”

Section: The Hydrological Diversity Between the Three Contrasted Wate...mentioning

confidence: 99%

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Exploring the Critical Zone Heterogeneity and the Hydrological Diversity Using an Integrated Ecohydrological Model in Three Contrasted Long‐Term Observatories

Ackerer,

Kuppel,

Braud

et al. 2023

Water Resources Research

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An integrated ecohydrological modeling approach was deployed in three long‐term critical zone (CZ) observatories of the French CZ network (CZ Observatories—Application and Research) to better understand how the CZ heterogeneity modulates the water cycle within territories. Ecohydrological simulations with the physically based model EcH2O‐iso constrained by a wide range of observations crossing several disciplines (meteorology, hydrology, geomorphology, geophysics, soil sciences, and satellite imagery) are able to capture stream water discharges, evapotranspiration fluxes, and piezometric levels in the Naizin, Auradé, and Strengbach watersheds. In Naizin, an agricultural watershed in northwestern France with a schist bedrock underlying deep weathered materials (5–15 m) along gentle slopes, modeling results reveal a deep aquifer with a large total water storage (1,080–1,150 mm), an important fraction of inactive water storage (94%), and relatively long stream water transit times (0.5–2.5 years). In the Auradé watershed, representative of agricultural landscapes of the southwestern France developed on molasse, a relatively shallow regolith (1–8 m) is observed along hilly slopes. Simulations indicate a shallow aquifer with moderate total water storage (590–630 mm), an important fraction of inactive water storage (91%), and shorter stream water transit times (0.1–1.3 years). In the Strengbach watershed, typical of mid‐mountain forested landscapes developed on granite, CZ evolution implies a shallow regolith (1–5 m) along steep slopes. Modeling results infer a shallow aquifer with the smallest total water storage (475–575 mm), the shortest stream water transit times (0.1–0.7 years), but also the highest fraction of active water storage (18%).

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Section: Discussionmentioning

confidence: 99%

Section: The Hydrological Diversity Between the Three Contrasted Wate...mentioning

confidence: 99%

Exploring the Critical Zone Heterogeneity and the Hydrological Diversity Using an Integrated Ecohydrological Model in Three Contrasted Long‐Term Observatories

Ackerer,

Kuppel,

Braud

et al. 2023

Water Resources Research

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“…During (high) rainfall events, water level, turbidity and particle concentrations increase in the watercourses, sometimes by several orders of magnitude (Cotel et al, 2020;Vongvixay et al 2018;Lefrancois et al, 2007). The variations can be very rapid, especially in very small headwater systems or during events such as flash floods.…”

Section: Stable Supply Of Unfiltered Stream Water During Storm Events...mentioning

confidence: 99%

Technical Note on high-frequency, multi-elemental stream water monitoring: experiences, feedbacks, and suggestions from seven years of running three French field laboratories (Riverlabs)

Brekenfeld,

Cotel,

Faucheux

et al. 2024

Preprint

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Abstract. High-frequency and multi-elemental stream water monitoring are acknowledged as necessary to address data limitation in the fields of catchment sciences and freshwater biogeochemistry. In recent years, the development of stream bank analyzers and on-site field laboratories to measure various solutes and/or isotopes at sub-hourly measurement intervals is in progress at an increasing number of sites. This trend should likely persist in the future. Here, we share our experiences of running three French field laboratories (called Riverlabs) over seven years. This technical note gives an overview of the technical and organizational points that we identify as critical in order to provide guidelines for the successful implementation of future projects running such equipment. We therefore share the main stages in the deployment of this tool in the field, the difficulties we encountered and the procedures we used to identify and eliminate their causes. Some of the critical aspects discussed here relate to 1) Supply of the field laboratory: basic functioning of the pumping, filtration and analytical systems, 2) Data quality control and assurance via maintenance services and operations, 3) Data harmonization and coordination of the laboratory components, and 4) Team structure, skills and organization. Our two main conclusions for a successful, long-term functioning of these types of field laboratories are, first, the necessity to adapt several central components of the field laboratory to the local conditions (climate, section, topography, water turbidity, power) and, second, the need of diverse and in-depth technical skills within the engineering team. We believe that sharing these experiences, combined with providing some practical suggestions might be useful for colleagues, who are starting to deploy such or similar field laboratories. These considerations will save time, improve performance and ensure continuous field monitoring.

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“…Global warming causes the decrease of vegetation on the slopes of rivers, accelerating the precipitation of solids in these (Goode, Luce, & Buffington, 2012;Szali nska et al, 2021). Similarly, human-made deforestation is one of the leading causes of the increase in TSS levels (Cotel, Viville, Benarioumlil, Ackerer, & Pierret, 2020).…”

mentioning

confidence: 99%

Modeling the dynamics of total suspended solids in a mountain basin using network theory

García-Usuga

Tost

Mazo

et al. 2021

River Research & Apps

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The watersheds of the Quindío River in Colombia South America have high levels of contamination by total suspended solids (TSS). The objective of this work was to represent the entire hydrographic network of the watersheds of the Quindío department by means of a graph and, using network theory, analyze the different centrality measures to identify areas most prone to TSS contamination. Similarly, partial differential equations were used to simulate the transport of TSS pollutants between specific points of the basin. For this purpose, a network of 409 nodes and 408 edges was created based on topographic maps and reports from the corporations in charge of preserving these watersheds. With information on contamination zones, the network, and partial differential equations, TSS transport was calculated throughout the hydrological network, identifying eight critical zones with high levels of this parameter. Some of these zones are on major rivers, such as the Quindío River near the city of Armenia; the Roble, Espejo, and San Juan rivers also have considerable levels.

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Impact of the hydrological regime and forestry operations on the fluxes of suspended sediment and bedload of a small middle-mountain catchment

Cited by 9 publications

References 108 publications

Exploring the Critical Zone Heterogeneity and the Hydrological Diversity Using an Integrated Ecohydrological Model in Three Contrasted Long‐Term Observatories

Exploring the Critical Zone Heterogeneity and the Hydrological Diversity Using an Integrated Ecohydrological Model in Three Contrasted Long‐Term Observatories

Technical Note on high-frequency, multi-elemental stream water monitoring: experiences, feedbacks, and suggestions from seven years of running three French field laboratories (Riverlabs)

Modeling the dynamics of total suspended solids in a mountain basin using network theory

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