Quantifying energy and water fluxes in dry dune ecosystems of the Netherlands

Voortman, Bernard R.; Bartholomeus, R.P.; Zee, S.E.A.T.M. van der; Bierkens, Marc F. P.; Witte, J.P.M.

doi:10.5194/hess-19-3787-2015

Cited by 20 publications

(16 citation statements)

References 57 publications

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“…The vascular plant cover had one set of properties representative for dry grassland vegetation following the study of Voortman et al . (), and differences in potential evaporation were only dependent on the cover (not on, e.g., vegetation height). Depending on the strategy of specific vascular plant species (optimization of transpiration and/or prevention of drought stress), the actual transpiration could differ from our simulations, albeit only marginally because climate, soil, and hydrological conditions were comparable between sites studied in this paper and the site studied by Voortman et al .…”

Section: Discussionmentioning

confidence: 99%

“…We simulated E p for three functional vegetation types (bare soil, moss, and vascular plants) following the parameterization of Voortman et al . ().…”

Section: Methodsmentioning

confidence: 97%

“…Parameters to simulate A hor were derived from Voortman et al . (). Equation was first applied for the sum of daytime values (between sunrise and sunset) and rescaled back to hourly values by the incoming solar radiation (by weights R s↓hour / R s↓daytime ).…”

Section: Methodsmentioning

confidence: 97%

“…() to describe the capacity of the moss layer to conduct water and parameterized the Penman–Monteith equation following Voortman et al . (). The hydraulic properties of Syntricha ruralis , Hypnum cupressiforme , Campylopus introflexus , and Cladonia portentosa , that is, the most dominant moss and lichen species (with a cover above 5%) occurring in the vegetation plots, were quantified by Voortman et al .…”

Section: Methodsmentioning

confidence: 97%

“…Because mosses and lichens evaporate less than vascular plants and in some cases even less than bare sand (Voortman, Bartholomeus, van der Zee, Bierkens, & Witte, ; Voortman et al . , ), the potential shift to more moss‐ and lichen‐dominated vegetation could mitigate the adverse effects of climate change on groundwater recharge rates.…”

Section: Introductionmentioning

confidence: 99%

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How the evaporation of dry dune grasslands evolves during the concerted succession of soil and vegetation

et al. 2017

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Sustainable water and vegetation management of coastal dunes requires fundamental knowledge of how interactions between soil, water, and vegetation evolve during succession. Therefore, we quantified the effect of succession on evaporation in dry dune grasslands of the Netherlands. OnIn general, the vascular plant cover is smaller and the succession speed is slower on equator-facing slopes, which are relatively dry.Mosses and lichens are present as pioneer species or as understory vegetation in coastal dunes. Because these mosses and lichens are more resilient to drought than most vascular plants, their cover is

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Section: Discussionmentioning

confidence: 99%

“…We simulated E p for three functional vegetation types (bare soil, moss, and vascular plants) following the parameterization of Voortman et al . ().…”

Section: Methodsmentioning

confidence: 97%

Section: Methodsmentioning

confidence: 97%

Section: Methodsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

How the evaporation of dry dune grasslands evolves during the concerted succession of soil and vegetation

et al. 2017

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Soil Water Repellency: A Potential Driver of Vegetation Dynamics in Coastal Dunes

et al. 2016

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Coastal dunes are valuable and complex ecosystems, meaning that predicting their response to anthropogenic pressure is challenging. A potential driver of complexity that links soil, water, and vegetation dynamics is soil water repellency (SWR). SWR is mainly caused by plant-derived hydrophobic compounds that are released during litter decomposition and leads to dry sandy soils resisting infiltration of precipitation. Until now, studies have focused on soil physical and chemical properties associated with SWR, but the potential of SWR generating soil watervegetation feedbacks that drive ecosystem dynamics is yet to be assessed. This study assessed the role of SWR on coastal dune ecosystem dynamics by combining field observations and laboratory experiments with theoretical ecological modeling that incorporated the empirically established relationships. We observed large differences in soil infiltration capacity in the field, and the laboratory experiments showed that soil hydrophobic compound concentrations and antecedent soil moisture conditions can explain these differences. Theoretical model analyses suggested that SWR can trigger cyclic vegetation dynamics, including long periods in which vegetation is absent. Water competitive plants with low-hydrophobic compound content (for example, woody species) exhibit stable temporal dynamics, whereas species with opposite traits (for example, grasses) are more likely to induce cyclic dynamics. For the latter species, SWR can amplify drought stress. In northwest Europe, this effect could become more important in coming decades due to the projected increases in drought severity. Our study explains how SWR may contribute to coastal dune ecosystem complexity, providing insights that may aid effective dune conservation and restoration.

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Estimation of groundwater recharge rates using soil-water isotope profiles: a case study of two contrasting dune types on Langeoog Island, Germany

et al. 2022

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The creation of artificial dunes for coastal protection may have important consequences for freshwater lenses in coastal aquifers. The objective of this study was to compare the recharge processes below such a young dune with scant vegetation to an older dune covered by grass and herbaceous vegetation. To this aim, soil and water samples were collected from the unsaturated zone at two sites on Langeoog Island in northern Germany, and the soil water was analysed for stable water isotopes and chloride. Recharge rates were calculated by using a new version of HYDRUS-1D, which was modified to simulate isotope fractionation during evaporation. Both the model outcomes and the data highlight the importance of fractionation, which is slightly more pronounced at the older, more vegetated dune. At the newly constructed dune, vegetation dieback seemingly reduces the importance of transpiration during summer. Recharge occurs year-round, albeit predominantly during the winter months. Calculated recharge rates are consistent with lysimeter measurements, but are significantly higher than previously reported rates based on groundwater age data, which is primarily attributed to the absence of dune shrub at the sites investigated here. More data are needed to establish the importance of soil-water repellency and overland flow. Based on the results, it is proposed that repeated isotope sampling can yield important insights into the dynamics of recharge processes, including their response to climate change.

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Quantifying energy and water fluxes in dry dune ecosystems of the Netherlands

Cited by 20 publications

References 57 publications

How the evaporation of dry dune grasslands evolves during the concerted succession of soil and vegetation

How the evaporation of dry dune grasslands evolves during the concerted succession of soil and vegetation

Soil Water Repellency: A Potential Driver of Vegetation Dynamics in Coastal Dunes

Estimation of groundwater recharge rates using soil-water isotope profiles: a case study of two contrasting dune types on Langeoog Island, Germany

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