Joris Eekhout

Joris Eekhout
Spanish National Research Council | CSIC · Department of Soil and Water Conservation and Organic Waste Management

PhD

About

38
Publications
8,896
Reads
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379
Citations
Additional affiliations
May 2009 - May 2014
Wageningen University & Research
Position
  • PhD Student
Education
September 2000 - October 2008
University of Twente
Field of study
  • Civil Engineering and Management / Water Engineering and Management

Publications

Publications (38)
Article
Understanding erosion and sedimentation processes along the drainage network, from hillslopes to rivers and reservoirs, is essential for water resources management and river restoration. This work proposes a novel dynamic evaluation of landscape factor from modeled runoff and erosion rates from physically-based distributed hydrological modelling, t...
Article
Full-text available
Climate change is expected to lead to increased soil erosion in many locations worldwide affecting ecosystem services and human well-being. Through a systematic review of 224 modelling studies, we provide a global assessment of the impact of climate change on soil erosion and the adaptation potential through land use change and soil conservation. W...
Article
Full-text available
This research studies the effect of climate change on the hydrological behavior of two semi-arid basins. For this purpose, the Soil and Water Assessment Tool (SWAT) model was used with the simulation of two future climate change scenarios, one Representative Concentration Pathway moderate (RCP 4.5) and the other extreme (RCP 8.5). Three future peri...
Article
Full-text available
Worldwide, Mediterranean cropping systems face the complex challenge of producing enough high-quality food while preserving the quantity and quality of scarce water for people and agriculture in the context of climate change. While good management of nitrogen (N) is paramount to achieving this objective, the efficient strategies developed for tempe...
Article
Full-text available
The impact of climate change on future soil loss is commonly assessed with soil erosion models, which are suggested to be an important source of uncertainty. Here we present a novel soil erosion model ensemble to assess model uncertainty in climate change impact assessments. The model en semble consisted of five continuous process‐based soil erosio...
Article
p>In hydromorphologically-degraded lowland streams, large-wood reintroductions are often used to reestablish instream physical structure, which might also increase biodiversity. However, the success rate of this approach varies in terms of positive macroinvertebrate assemblage responses. To obtain better insight into macroinvertebrate–wood relation...
Article
The use of check-dams in mountain environments to regulate fluxes of water and sediments is widely applied across Mediterranean mountains. Besides the use of “grey infrastructures” such as check-dams, other restoration and hydrological control measures rely more on the use of “green infrastructures” or “nature-based solutions” (e.g. reforestation,...
Article
The Mediterranean region has been identified as one of the most affected global hot-spots for climate change, which is already manifested by faster increasing temperatures than the global mean and significant decreases in annual precipitation. Besides, over the past decades, important land cover changes have occurred, such as reforestation, agricul...
Article
Full-text available
Placement of wood in streams has become a common method to increase ecological value in river and stream restoration and is widely used in natural environments. Water managers, however, are often hesitant to introduce wood in channels that drain agricultural and urban areas because of backwater effect concerns. This study aims to better understand...
Article
Dimensionless morphological ratios (DMR) generally are used in systemic proposals for stream classification and river restoration projects. Often, such morphometric parameters, including field data from channel cross sections, develop into a template for a given geomorphic reference site. In this study, high-resolution Digital Terrain Models (HRDTM...
Article
Full-text available
Climate models project increased extreme precipitation for the coming decades, which may lead to higher soil erosion in many locations worldwide. Different soil erosion model concepts are used to assess the impact of climate change on soil erosion at large spatial scales, including models forced by precipitation and by runoff. However, there is lit...
Technical Report
Full-text available
This chapter examines the scientific understanding of how climate change impacts land degradation, and vice versa, with a focus on non-drylands. Land degradation of drylands is covered in Chapter 3. After providing definitions and the context (Section 4.1) we proceed with a theoretical explanation of the different processes of land degradation and...
Poster
Full-text available
A set of dimensionless morphological ratios are commonly used as a basis for studies of stream stability and natural channel restoration. Often, such ratios have been obtained from morphometric measurements made in the field and developed into a template for a given geomorphic reference site. The main objective of the present study is to analyze th...
Poster
Full-text available
A set of dimensionless morphological ratios are commonly used as a basis for studies of stream stability and natural channel restoration. Often, such ratios have been obtained from morphometric measurements made in the field and developed into a template for a given geomorphic reference site. In this study, high resolution aerial photographs from 2...
Poster
Lithological and aridity conditions in the central area of the Ebro Basin favour the abundance of intermittent and ephemeral rivers. These rivers suffer important environmental problems but lack specific scientific studies, and in most cases they are not even considered water bodies in their management. A methodological proposal is launched combini...
Article
Climate change will most likely cause an increase of extreme precipitation and consequently an increase of soil erosion in many locations worldwide. In most cases, climate model output is used to assess the impact of climate change on soil erosion, however, there is little knowledge of the implications of bias‐correction methods and climate model e...
Article
Full-text available
An increase in extreme precipitation is projected for many areas worldwide in the coming decades. To assess the impact of increased precipitation intensity on water security, we applied a regional-scale hydrological and soil erosion model, forced with regional climate model projections. We specifically considered the impact of climate change on the...
Article
Climate change will strongly affect essential ecosystem services, like the provision of freshwater, food production, soil erosion and flood control. Sustainable Land Management (SLM) practices are increasingly promoted to contribute to climate change mitigation and adaptation, but there is lack of evidence at scales most relevant for policymaking....
Article
Full-text available
Assessing the impacts of environmental change on soil erosion and sediment yield at the large catchment scale remains one of the main challenges in soil erosion modelling studies. Here, we present a process-based soil erosion model, based on the integration of the Morgan–Morgan–Finney erosion model in a daily based hydrological model. The model ove...
Article
Full-text available
An increase of extreme precipitation is projected for many areas worldwide in the coming decades. To assess the impact of increased precipitation intensity on water security, we applied a regional scale hydrological and soil erosion model, forced with Regional Climate Model projections. We specifically considered the impact of climate change on the...
Article
Full-text available
Assessing the impacts of environmental change on soil erosion and sediment yield at the large catchment scale remains one of the main challenges in soil erosion modelling studies. Here, we present a process-based soil erosion model, based on the integration of the Morgan-Morgan-Finney erosion model in a daily-based hydrological model. The model ove...
Article
Full-text available
Leaves are the major component of terrestrial litter input into aquatic systems. Leaves are distributed by the flow, accumulate in low flow areas and form patches. In natural streams, stable leaf patches form around complex structures, such as large woody debris. Until now, little is known about flow conditions under which leaf patches persist. Thi...
Article
Full-text available
The parameterization of crop coefficients (kc) is critical for determining a water balance. We used satellite-based and literature-based methods to derive kc values for a distributed hydrologic model. We evaluated the impact of different kc parametrization methods on the water balance and simulated hydrologic response at the basin and sub-basin sca...
Article
Stream restoration efforts often aim at creating new unconstrained meandering channels without weirs and bank revetments. In reconstructed streams, the initial morphological response of the new streams is often rapid, until a dynamic equilibrium is reached. Here we report on a chute cutoff that occurred within 3 months after realization of a stream...
Article
Full-text available
earth-surf-dynam.net/2/279/2014/ doi:10.5194/esurf-2-279-2014 © Author(s) 2014. CC Attribution 3.0 License. Abstract. With the aim to establish and understand morphological changes in response to channel reconstruc-tion, a detailed monitoring plan was implemented in a lowland stream called Lunterse Beek, located in the Netherlands. Over a period of...
Thesis
Full-text available
Large-scale channelisation in the first half of the 20th century caused degradation of the biodiversity in lowland streams in the Netherlands. More than 25 years ago, the Dutch water boards started restoring the degraded lowland streams, which is commonly referred to as stream restoration. Until recently, bank erosion and other changes to the strea...
Article
Full-text available
Al 25 jaar voeren waterbeheerders projecten uit waarbij laglandbeken een kronkelende loop terugkrijgen. Maar wat gebeurt er precies met de vorm van zo'n beek na uitvoering van het project? Hoe lang duurt de aanpassingsperiode en welke factoren hebben invloed? De conclusies van een onderzoek in de Lunterse Beek.
Article
In de beek de Hooge Raam is een beekherstelproject gekoppeld aan een uniek veldexperiment. Het doel van het veldexperiment was om over een periode van drie jaar de temporele morfodynamiek te volgen van een rechte beekloop met een breed en ondiep dwarsprofiel. Ongeveer 8 maanden na aanleg zijn alternerende banken ontstaan. In eerste instantie namen...
Technical Report
In de eerste helft van de 20ste eeuw zijn veel laaglandbeken in Nederland gekanaliseerd. Dit heeft vaak geleid tot grote veranderingen in de hydrologie en morfologie van beken, met als gevolg een sterke achteruitgang van de bijbehorende karakteristieke aquatische en terrestrische ecosystemen. In de afgelopen 25 jaar zijn de Nederlandse waterschappe...
Article
[1] Alternate bars in rivers and streams develop as a result of differences in length scales involved in the adjustment of flow and sediment transport to irregularities of the bed. The amount of field evidence supporting theoretical insights is highly limited. Here, we present results from a large-scale field experiment in a 600 m long straight rea...
Article
Full-text available
With the aim to establish and understand morphological changes in response to stream restoration measures, a detailed monitoring plan was implemented in a lowland stream called Lunterse Beek, located in the Netherlands. Over a period of 1.5 yr, the monitoring included serial morphological surveys, continuous discharge and water level measurements a...
Article
In analytical and numerical models of river meandering, initiation of meandering typically occurs uniformly along the streamwise coordinate in the channel. Based on a historical analysis of the Nierskanaal, here we show how and under which circumstances meandering has initiated in isolated sections of a channel. The Nierskanaal was constructed by t...
Article
Aan het eind van de 18de eeuw is tussen de rivieren de Niers in Duitsland en de Maas in Nederland het Geldernsch-Nierskanaal gegraven, om piekafvoeren in het benedenstroomse deel van de Niers af te vlakken. Het Duitse deel van het kanaal is in de loop van de tijd gekanaliseerd gebleven door oeverbeschoeiing. Opvallend is dat het Nederlandse deel, d...
Conference Paper
Full-text available
Within the Dutch research project ’Valley wide meander restoration’ six restored streams will be monitored over a 2-year period. The monitoring program aims at understanding initial morphological processes and the associated ecological developments. The present study focuses on the morphodynamic developments that took place after the completion of...
Technical Report
Het doel van het project Beekdalbreed Hermeanderen was om in de praktijk in beekherstelprojecten een gedempt afvoer- en een stabiel en gevarieerd habitatpatroon te realiseren door morfologische en hydrologische maatregelen in samenhang uit te voeren. In 6 beekdalbreed uitgevoerde hermeanderingsprojecten en in 7 projecten, waarbij dood hout is ingeb...
Poster
Around 1770, a straight artificial canal (Gelderns-Nierskanaal) has been constructed between the River Niers and the River Meuse, crossing the border between Germany and the Netherlands, with the purpose of reducing flood risk in the downstream reaches of the River Niers. Whereas the German part of the canal is kept straight throughout time, the Du...
Thesis
Full-text available
A lot of processes within process-based models, like Unibest-TC, are still not well understood. Consequently, numerous experiments are carried out to get more insight in these processes. As part of the European HYDRALAB-III project, experiments were carried out in the Großen Wellenkanal (GWK) of the Forschungszentrum Küste in Hannover, Germany. Dat...

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Projects

Projects (2)
Project
The overal aim of XTREME is to quantify the effectiveness, complementarity and trade-offs of large-scale implementation of NBS that increase water retention on agricultural land and restore channels and floodplains to mitigate the devastating impacts of extreme weather (floods and droughts) and climate change in large Mediterranean catchments. XTREME is funded by the Spanish Ministry of Science, Inovation and Universities (PID2019-109381RB-I00/AEI/10.13039/501100011033)
Project
Due to their characteristics and problems, the Mediterranean ephemeral channels (MECs) have been excluded from the programs and projects of river restoration and rehabilitation in Spain and throughout Europe. The low social appreciation and the lack of interest in such channels are noteworthy. Their local impacts may be important, but those resulting from Climate Change may have more serious effects than in other watercourses, with synergistic processes of incision, narrowing and plant colonization. In this context, the main objective of the present project is to analyze the morphological and systemic adjustments produced in the MECs, as a consequence of Climate Change and new environmental scenarios. To analyze such effects, small semi-arid Mediterranean basins located in the central depression of the river Ebro and the southern part of the region of Navarra, the Southeastern Iberian Peninsula and the Region of Calabria (Italy) will be chosen as pilot study areas. By means of distributed hydrological models according to the scale of events, in continuous simulation, and aggregates in stochastic simulation, will be determined the variability of their flows, which will be related to changes in the erosion, transport, and fluvial sedimentation processes. Recent morphological adjustments (1950-2015) will be evaluated and mapped based on the use of historical orthorectified aerial photographs, orthophotomaps, and satellite images of different dates. The study of the morphological evolution will be completed by analysis of sedimentary facies, supported by sampling, drilling, and tomography, as well as by the monitoring of current geomorphic processes through high-definition topographic measurements with LIDAR and UAV flights. The identification and evaluation of ecosystem services (ES) will be carried out using official databases. The work will identify the ES provided by the biophysical system (ephemeral channels and watersheds) and those co-produced with the social system coupled to them, related to the water flows and vegetation of the riverbeds, in reference ephemeral channels selected due to their null or low anthropogenic pressure. To quantify the water flows (blue and green) provided by ES, different hydrological models will be used, while for the vegetation in the channels, functional indexes based on the biological characteristics of the taxa will be used. The change or loss of ES associated with the intensification of land use will be determined by the use of statistical techniques and photointerpretation of orthophotomaps and satellite images. In addition, to evaluate the degree of morphological and ecosystem response of this type of channel (MECs) to future climate change (CC) scenarios, regionalized simulations at high spatial resolution (12.5 km) of the Program CORDEX (COordinated Regional Climate Downscaling Experiment) (WMO) will be used.The results of this coordinated project will represent a significant advance in our knowledge of the geomorphological resilience of these systems and their capacity for the provision of ES. From this knowledge and the impacts of the CC detected, concrete measures will be proposed for each stretch of the channels. But the most important action proposal here will be social awareness and environmental education to consolidate a general initiative in which the MECs are appreciated, recovered, and protected, integrating them into the concept of natural river reserves.