Impact of water drawdown and rewetting on sediment nutrient-dynamics in a constructed delta-lake system (Oostvaardersplassen, The Netherlands): A mesocosm study

Vonk, J. Arie; Rombouts, Titus; Schoorl, Jorien; Serne, P.; Westerveld, Joke; Cornelissen, Perry; Geest, Harm G. van der

doi:10.1016/j.ecoleng.2017.06.017

Cited by 10 publications

(4 citation statements)

References 42 publications

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“…With the increase in the exposure time of the mudflat, the consumption of DOC could significantly decrease the respiratory flux from the mudflat. However, no significant correlation was found between CDE and the respiratory flux from the mudflat, which is derived from the increasing DOC induced by the organic matter deposition during the flooded period and the enhancement of microbial metabolism in the soil after mudflat exposure (Vonk et al, 2017). At the deeper soil, the DOC content increased with the increase in CDE (Figure 7), continuously supplying DOC for ecosystem respiration.…”

Section: Discussionmentioning

confidence: 97%

Drivers for ecosystem respiration during the drawdown period in Dongting Lake, China

Zhou

Lei

Wang

et al. 2023

Front. Environ. Sci.

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Global lakes play an active role in releasing carbon into the atmosphere. However, previous research was less focused on shallow tropical and sub-tropical lakes, especially ecosystem respiration during the drawdown period. This study was designed to determine the environmental factors that determine ecosystem respiration during the drawdown period in a typical shallow sub-tropical lake, Dongting Lake in China. Ecosystem respiration from the exposed mudflat and a newly colonized meadow were investigated using a Li-8100 soil CO2 flux system in situ. The soil water content soil organic carbon (SOC), dissolved organic carbon (DOC), total nitrogen and soil C/N ratio were measured at 0–30 cm soil depth layers. No difference was found among different soil depth layers for soil properties, while the dissolved organic carbon value varied significantly among different levels of the cumulative days of the mudflat exposed to the air (CDE). Carex colonizing significantly increased soil organic carbon and DOC at the surface soil layer. Exposure to the air and Carex colonizing together strengthened the intensity of carbon dioxide (CO2) emission in the mudflat, achieving 0.716 ± 0.114 μmol m-2s-1 and 2.240 ± 0.375 μmol m-2s-1, respectively. Exposure to the air led mudflat to exceed other landscapes or different vegetation types in Dongting Lake, becoming the most active area releasing CO2 into the atmosphere, with the respiration flux reaching a peak period at around 60 days after exposure, which was enormously reinforced by Carex colonizing. Reducing the area and duration of mudflat exposure to the air during the drawdown period might be useful in reducing CO2 emissions to the atmosphere in shallow sub-tropical lakes.

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Section: Discussionmentioning

confidence: 97%

Drivers for ecosystem respiration during the drawdown period in Dongting Lake, China

Zhou

Lei

Wang

et al. 2023

Front. Environ. Sci.

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“…Hydrology, but also nutrient fluxes across the sediment-water interface shape the nutrient concentrations in the water column (Weigelhofer et al 2018). In shallow water areas, the exchange of nutrients across the sediment-water interface is, in its turn, dependent on local water draw down and rewetting water management regimes (Vonk et al 2017). Retention time of groundwater, seepage, land use and soil type are all factors that influence the relationship between nutrient values in soil and nutrient loads in surface waters (Yu et al 2018).…”

Section: Background Information Nutrient Concentrationsmentioning

confidence: 99%

The effects of nutrient run-off on fish productivity - considering the effects of stoichiometry

Soudijn¹,

Wolfshaar²

2021

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“…Sensors capable of measuring the redox potential at a single point 4 are an alternative to flow cell sampling. Its use, which is increasing, avoids mixing interferences and can catch the redox evolution in highly dynamic systems (e.g., wetlands, 5 aquifer− stream interaction, 6 or constructed delta-lake systems 7 ). Sensor data could be directly integrated into the modelbased analysis of biogeochemical subsurface systems, adding significant value to field Eh data.…”

Section: Introductionmentioning

confidence: 99%

Coupling Flow, Heat, and Reactive Transport Modeling to Reproduce In Situ Redox Potential Evolution: Application to an Infiltration Pond

Rodríguez‐Escales

Barba

Sánchez-Vila

et al. 2020

Environ. Sci. Technol.

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Redox potential (𝐸𝐸ℎ) measurements are widely used as indicators of the dominant reduction-oxidation reactions occurring underground. Yet, 𝐸𝐸ℎ data are mostly used in qualitative terms, as actual values cannot be used to distinguish uniquely the dominant redox processes at a sampling point, and should therefore be combined with a detailed geochemical characterization of water samples. In this work, we have intensively characterized the redox potential of the first meter of soil in an infiltration pond recharged with river water using a set of in-situ sensors measuring every 12 min during a one-year period. This large amount of data combined with hydrogeochemical campaigns allowed developing a reactive transport model capable of reproducing the redox potential in space and time together with the site hydrochemistry. Our results showed redox processes were mainly driven by the amount of Sedimentary Organic Matter in the system as well as by seasonal variation of temperature. As a subsidiary result, our work emphasizes the need to use a fully coupled model of flow, heat transport, solute transport and the geochemical reaction network to fully reproduce the 𝐸𝐸ℎ observations in the topsoil.

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Impact of water drawdown and rewetting on sediment nutrient-dynamics in a constructed delta-lake system (Oostvaardersplassen, The Netherlands): A mesocosm study

Cited by 10 publications

References 42 publications

Drivers for ecosystem respiration during the drawdown period in Dongting Lake, China

Drivers for ecosystem respiration during the drawdown period in Dongting Lake, China

The effects of nutrient run-off on fish productivity - considering the effects of stoichiometry

Coupling Flow, Heat, and Reactive Transport Modeling to Reproduce In Situ Redox Potential Evolution: Application to an Infiltration Pond

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