Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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    Resilience of River Deltas in the Anthropocene
    Hoitink, A.J.F. ; Nittrouer, J.A. ; Passalacqua, P. ; Shaw, J.B. ; Langendoen, E.J. ; Huismans, Y. ; Maren, D.S. van - \ 2020
    Journal of Geophysical Research: Earth Surface 125 (2020)3. - ISSN 2169-9003
    deltas - morphodynamics - resilience - rivers - sea level rise - sediment transport

    At a global scale, delta morphologies are subject to rapid change as a result of direct and indirect effects of human activity. This jeopardizes the ecosystem services of deltas, including protection against flood hazards, facilitation of navigation, and biodiversity. Direct manifestations of delta morphological instability include river bank failure, which may lead to avulsion, persistent channel incision or aggregation, and a change of the sedimentary regime to hyperturbid conditions. Notwithstanding the in-depth knowledge developed over the past decades about those topics, existing understanding is fragmented, and the predictive capacity of morphodynamic models is limited. The advancement of potential resilience analysis tools may proceed from improved models, continuous observations, and the application of novel analysis techniques. Progress will benefit from synergy between approaches. Empirical and numerical models are built using field observations, and, in turn, model simulations can inform observationists about where to measure. Information theory offers a systematic approach to test the realism of alternative model concepts. Once the key mechanism responsible for a morphodynamic instability phenomenon is understood, concepts from dynamic system theory can be employed to develop early warning indicators. In the development of reliable tools to design resilient deltas, one of the first challenges is to close the sediment balance at multiple scales, such that morphodynamic model predictions match with fully independent measurements. Such a high ambition level is rarely adopted and is urgently needed to address the ongoing global changes causing sea level rise and reduced sediment input by reservoir building.

    Adaptive decision-making under conditions of uncertainty: the case of farming in the Volta delta, Ghana
    Sarku, Rebecca ; Dewulf, Art ; Slobbe, Erik van; Termeer, Katrien ; Kranjac-Berisavljevic, Gordana - \ 2020
    Journal of integrative Environmental Sciences 17 (2020)1. - ISSN 1943-815X - p. 1 - 33.
    Ada East District - Adaptive decision-making - deltas - farming - uncertainty - weather conditions

    Farming in Ghana’s Volta delta is increasingly affected by variability in rainfall conditions and changes in land-use patterns. Under such socio-ecological conditions, little is known about farmers’ decision-making in response to uncertainties in uncertain rainfall conditions. To fill this gap and add to the literature on adaptive decision-making, we addressed the central question: what are the existing patterns of farming decision-making under uncertain rainfall conditions, and which decision-making strategies are adaptive? We developed an adaptive decision-making framework to investigate the behavior of farmers under variable rainfall conditions in Ghana’s Volta delta in the Ada East District. We conducted 5 interviews with agricultural extension agents, 44 in-depth interviews and 4 focus group discussion with farmers. Subsequently, we interviewed a sub-selection of 32 farmers. Findings of the study shows that farmers carry out different decision-making patterns in response to the variable rainfall conditions. We distinguished six strategies: three based on flexibility and three based on robustness. Flexible adaptive decision-making strategies are switching dates for sowing seeds through wait-and-see or delay strategy, muddling through the farming season with the application of various options and alternative irrigation strategies. Robust adaptive decision-making strategies are portfolio strategy of transplanting seedlings in batches, selection of robust (hardy) crops, and intercropping or diversification. Based on how farmers select strategies in response to uncertainty in rainfall conditions, we argue that some decision-making strategies are more adaptive than others. Findings of this study are relevant for the design and implementation of climate related agricultural projects.

    Planning amid uncertainty : Adaptiveness for spatial interventions in delta areas
    Zandvoort, Mark - \ 2017
    Wageningen University. Promotor(en): A. van den Brink, co-promotor(en): M.J. Vlist; F. Klijn. - Wageningen : Wageningen University - ISBN 9789463437158 - 242
    physical planning - deltas - climatic change - risk management - uncertainty - ruimtelijke ordening - delta's - klimaatverandering - risicobeheersing - onzekerheid

    Planning for delta areas happens amid uncertainty, which may influence the location, type and form of interventions such as infrastructure, spatial strategies and design standards. Interventions, however, may fix the spatial configuration for decades, for which insight in the appropriate use of adaptiveness to account for uncertainty is essential. This thesis explores uncertainty and adaptiveness in spatial planning and studies their expression and empirical manifestation in planning approaches, planning tools and planning processes. Uncertainty’s characteristics are used to distill information about the (in)adequacy of specific interventions and are related to three domains of adaptiveness: adaptive management, adaptive capacity and adaptive planning. The thesis shows that while some uncertainties demand interventions aimed at ensuring the effectiveness of planning while anticipating future change, others require a focus on the planning process by the co-construction of knowledge, deliberating about values and increasing the adaptive capacity of actors and institutions.

    Bringing in the floods : a comparative study on controlled flooding in the Dutch, Bangladesh and Vietnamese deltas
    Staveren, Martijn F. van - \ 2017
    Wageningen University. Promotor(en): J.P.M. Tatenhove, co-promotor(en): J.F. Warner; P. Wester. - Wageningen : Wageningen University - ISBN 9789463437035 - 174
    water management - flooding - deltas - hydraulic engineering - rivers - environmental management - environmental policy - environmental control - netherlands - vietnam - bangladesh - waterbeheer - inundatie - delta's - waterbouwkunde - rivieren - milieubeheer - milieubeleid - milieubeheersing - nederland - vietnam - bangladesh

    This thesis investigates contested initiatives to restore controlled flooding in the deltas of the Dutch, Bangladesh and Vietnamese (Mekong) deltas. Restoring controlled flooding is a seemingly contradictory measure in densely populated delta areas, where approaches based on full flood prevention has been typically dominant for decades. This has instigated the question how the emergence of restored controlled flooding initiatives can be explained. Related, this study reflects on how controlled flooding could contribute to long-term flood risk management and sustainable development in deltas, which are simultaneously attractive and vulnerable places for humans to live in. In order to answer this question, a case study approach has been used to investigate social, environmental and technological factors that have shaped controlled flooding initiatives. Cases have been identified that materialized under different conditions: from very dynamic delta environments to relatively stable ones, and from interventions driven by “top-down” policies to “bottom-up” action to modify or remove embankments. This thesis has an article-based structure, which means that individual chapters (2-5) have been designed for publication with peer reviewed academic journals. Chapter 1 provides the general background information, problem definition, and objectives. Chapter 6 ties together the findings of the individual case study chapters and presents the conclusions.

    Chapter 2 conceptualizes deltas as interacting social-ecological-technological systems. It argues that a better understanding of how hydraulic infrastructure influences social processes and environmental dynamics in deltas is critical to understand how deltas evolve over time. By means of the delta trajectories concept, the chapter presents a way to understand this interaction. It also presents a way to understand the sustainability of a delta trajectory, and discusses how new flood management concepts might contribute to “realigning” the development trajectory towards more sustainable system states.

    In Chapter 3, the first controlled flooding case is investigated. The Noordwaard is an agricultural polder, located at the junction of tides and riverine discharge in the Netherlands. As part of the Room for the River programme, the northern embankments were lowered which enables the inflow of water during high water levels in the river Merwede. This reduces peak water levels in the river, supports the adjacent freshwater Biesbosch wetland by means of restored water dynamics, but also affects the possibilities for agricultural production. The chapter highlights that a strong coupling can be observed between the domains of water safety and nature development objectives, and that a top-down decision concluded a long stakeholder negotiation processes. From the perspective of “subsiding polder lands,” controlled flooding is not regarded for its strategic importance, as excessive sedimentation would hamper the intended design discharge of the area.

    Chapter 4 explores the Tidal River Management concept. In the coastal zone of Bangladesh, community-enforced embankment breaches have opened up some of the polders or low-lying areas called “beels,” and exposed them to tidal influence again. Besides stimulating agricultural production and providing safer places to live in, the extensive network of polder embankments also caused increased sedimentation in the region’s rivers, and water logging in enclosed areas due to insufficient drainage possibilities. The chapter highlights that policy debates in Bangladesh have revolved around adopting “open” or “closed” approaches, where TRM represents a hybrid form. The case showed that TRM involves water management and sediment management, and that it represented a “social opening up” for local communities and NGOs to get involved with water projects and embankment removal.

    Plans to restore seasonal flooding in the Mekong delta are center stage in Chapter 5. The Mekong delta system is very dynamic and dealing with the delta’s water resources, in connection with intensive rice production, have been heavily debated by Vietnamese and international policy makers. This chapter investigates a number of older and more recent long-term development plans for the Mekong delta. This analysis highlights how ideas about controlled flooding and flood control have gradually evolved over time. The most recent delta management plan suggests to restore seasonal flooding in some parts of the delta, as a way to safeguard downstream urban areas from peak flows, and as a way to improve the conditions for agricultural production.

    Chapter 6 summarizes the findings of the case study chapters one by one, and concisely answers the research questions. It highlights key similarities and differences when it comes to social, environmental and technological dimensions, and discusses these findings with the literature on flood risk management policy, complex adaptive systems research, and delta studies. The findings demonstrate that environmental dynamics have been critical to emphasize the potential of restoring controlled flooding, but that social and technological factors have been important enablers or constrainers for controlled flooding initiatives to take shape. In itself, controlled flooding reconciles ecosystem-based ideas about flood management with more mainstream policies based on flood control. For this reason controlled flooding can be seen as a “niche-development” with limited influence on how flood management policies, and environmental delta systems, evolve. At the same time, controlled flooding has been acknowledged for its strategic opportunities, for example when it comes to diverting peak water discharges, land heightening by means of capturing suspended sediment, and by providing nutrient for agricultural. This offers opportunities for further thinking about and conceptual development of controlled flooding.

    New perspectives for urbanizing deltas : a complex adaptive systems approach to planning and design : Integrated Planning and Design in the Delta (IPDD)
    Meyer, Han ; Bregt, A.K. ; Dammers, Ed ; Edelbos, Jurian ; Berg, Job van den; Born, Gert Jan van den; Broesi, R. ; Buuren, A. van; Burg, Leo van den; Duijn, Mike ; Heun, Gepke ; Marchand, M. ; Neumann, D. ; Nieuwenhuijze, L. ; Nijhuis, S. ; Pel, B. ; Pols, L. ; Pouderoijen, Michiel ; Rijken, Bart ; Roeleveld, Gerda ; Verkerk, Jitske ; Warmerdam, M. - \ 2015
    Amsterdam : MUST Publishers - 233
    deltas - urbanization - regional planning - physical planning - integrated spatial planning policy - south-west netherlands - urban development - water management - delta's - urbanisatie - regionale planning - ruimtelijke ordening - gebiedsgericht beleid - zuidwest-nederland - stadsontwikkeling - waterbeheer
    The delta region between Rotterdam and Antwerp is a prime example of an area where spatial developments face increasing complexity. Local initiatives for developing urban expansions, recreation areas, nature and industrial complexes must harmonize with measures such as adequate flood protection, sufficient freshwater supply, restoration of ecosystems and large-scale infrastructure over the long term. This complexity demans a new approach to spatial planning and design. This book is the result of a research project that aimed to develop such a new planning practice. The research was carried out in collaboration by a consortium of universities, centres of expertise, and engineering and design firms. The research conceived of the Southwest Delta of the Netherlands as a laboratory for the new approach, which has nonetheless also proven relevant to other regions dealing with a similar level of complexity.
    Balancing options for shrimp farming : a landscape approach to investigate the future of shrimp farming in the Mekong Delta
    Joffre, O.M. - \ 2015
    Wageningen University. Promotor(en): Johan Verreth; Arnold Bregt, co-promotor(en): Roel Bosma. - Wageningen : Wageningen University - ISBN 9789462574984 - 196
    garnalenteelt - schaal- en schelpdierenteelt - kustgebieden - milieueffect - landschap - aquacultuur - mangroves - middelen van bestaan - hulpbronnengebruik - geïntegreerde systemen - duurzaamheid (sustainability) - mekong - delta's - shrimp culture - shellfish culture - coastal areas - environmental impact - landscape - aquaculture - mangroves - livelihoods - resource utilization - integrated systems - sustainability - mekong river - deltas

    Balancing options for shrimp farming

    A landscape approach to investigate the future of shrimp farming in the Mekong Delta

    Olivier Joffre

    While providing an option for development in coastal areas, shrimp farming is usually associated with high environmental cost due to the loss of mangrove forest and high social cost as farmers suffer heavy financial losses due to disease outbreaks. Planning shrimp farming requires to integrate risk as well as social and environmental cost. This thesis, using the Mekong Delta as a case, presents an approach to investigate, with local stakeholders, options to plan a resilient and sustainable shrimp farming sector. First, Olivier Joffre analyzed the different shrimp production systems from economic point of view before analyzing farmer’s strategies and providing insights on drivers that will push or, at the opposite, constraint farmers to choose integrated mangrove shrimp systems. This knowledge was integrated in an Agent Based Model (ABM) that was calibrated using Role Playing Games (RPG).

    The effect of future scenarios and different policies on the farmers’ decisions was tested using a combination of RPG and ABM. For one coastal district of the Mekong Delta, the results showed that promotion of intensification of shrimp production has a high social cost and decreases the total production in the study area after 10 years. Policies for supporting the spread of integrated mangrove-shrimp systems, such as Payment for Ecosystem Services, or access to an organic value chain, are not strong enough to influence farmers’ decision toward adopting these systems. Without any adaptation to climate change a sharp decrease of the production is expected. The approach brought local farmers’ knowledge to the attention of decision makers.

    Zeehonden in het Deltagebied; populatiesontwikkeling en geperfluoreerde verbindingen
    Dedert, M. ; Brasseur, S.M.J.M. ; Heuvel-Greve, M.J. van den - \ 2015
    Yerseke : IMARES (Rapport / IMARES Wageningen UR C178/14) - 32
    zeehonden - ecotoxicologie - delta's - natura 2000 - zuidwest-nederland - seals - ecotoxicology - deltas - natura 2000 - south-west netherlands
    Dit rapport omvat een overzicht van aantallen, reproductie en sterfte van zeehonden in het Deltagebied en de resultaten van een literatuuronderzoek naar mogelijke effecten van perfluorverbindingen (PFC’s) op de gezondheid van zeehonden. Momenteel zijn er in aantal voldoende gewone en grijze zeehonden in het Deltagebied aanwezig om aan het Natura2000 instandhoudingsdoel van 200 exemplaren in het Deltagebied te voldoen. Als het doel is om op zichzelf staande populaties aan zeehonden in het Deltagebied te hebben dan wordt hier niet aan voldaan. Het aantal pups dat jaarlijks wordt geboren in het Deltagebied is lager dan nodig om een populatie in stand te houden en blijft achter in vergelijking tot de Waddenzee
    Launching the Delta Alliance: business development report phase 3
    Driel, W.F. van; Peters, R. ; Guchte, C. van de - \ 2014
    Wageningen : Delta Alliance - 23
    klimaatverandering - overstromingen - kustgebieden - delta's - azië - afrika - amerika - europa - climatic change - floods - coastal areas - deltas - asia - africa - america - europe
    Delta Alliance is an international knowledge-driven network organisation. Its mission is to improve the resilience of deltas through more integrated and effective efforts, building on scientific research and knowledge exchange. It aims at disclosure of knowledge for application by a wide audience of end-users from the knowledge institutions, public partners and private sector, as well as to identification of upcoming research agendas
    Comparative assessment of the vulnerability and resilience of deltas, extended version with 14 deltas : work document
    Bucx, T. ; Driel, W.F. van; Boer, H. de; Graas, S. ; Langenberg, V. ; Marchand, M. ; Guchte, C. van de - \ 2014
    Delft-Wageningen : Delta Alliance (Delta Alliance report number 7) - 145
    hoogwaterbeheersing - kustgebieden - delta's - landgebruik - flood control - coastal areas - deltas - land use
    Worldwide, deltas host dense populations and are important centres of agricultural and industrial production, and economic activity. Many deltas are areas of great ecological importance as well, featuring wetlands of high and unique biodiversity. Deltas are vulnerable to changes by natural forces and human activities. Major drivers of change are population growth, economic development, climate change and subsidence.
    Comparative assessment of the vulnerability and resilience of deltas : extended version with 14 deltas : synthesis report
    Bucx, T. ; Driel, W.F. van; Boer, H. de; Graas, S. ; Langenberg, V. ; Marchand, M. ; Guchte, C. van de - \ 2014
    Delft-Wageningen : Delta Alliance - ISBN 9789492100030 - 60
    hoogwaterbeheersing - kustgebieden - delta's - landgebruik - klimaatverandering - afrika - azië - europa - amerika - flood control - coastal areas - deltas - land use - climatic change - africa - asia - europe - america
    Worldwide, deltas host dense populations and are important centres of agricultural and industrial production, and economic activity. Many deltas are areas of great ecological importance as well, featuring wetlands of high and unique biodiversity. Deltas are vulnerable to changes by natural forces and human activities. Major drivers of change are population growth, economic development, climate change and subsidence.
    Launching the Delta Alliance: Content report phase 3
    Bosch, R. van den; Bucx, T. ; Klostermann, J.E.M. ; Wijsman, P. ; Driel, W.F. van; Guchte, C. van de - \ 2014
    Wageningen : Delta Alliance - 23
    klimaatverandering - overstromingen - kustgebieden - delta's - azië - afrika - amerika - europa - climatic change - floods - coastal areas - deltas - asia - africa - america - europe
    Delta Alliance is an international knowledge-driven network organisation. Its mission is to improve the resilience of deltas through more integrated and effective efforts, building on scientific research and knowledge exchange. It aims at disclosure of knowledge for application by a wide audience of end-users from the knowledge institutions, public partners and private sector, as well as to identification of upcoming research agendas
    Nieuwe perspectieven voor een verstedelijkte delta: naar een methode van planvorming en ontwerp
    Meyer, V.J. ; Bregt, A.K. ; Dammers, E. ; Edelenbos, J. - \ 2014
    Amsterdam : MUST Publishers - ISBN 9789081445504 - 231
    ruimtelijke ordening - delta - urbanisatie - ontwerp - recreatie - natuurgebieden - industrieterreinen - zuid-holland - zeeland - zuidwest-nederland - physical planning - deltas - urbanization - design - recreation - natural areas - industrial sites - south-west netherlands
    Dit boek is een pleidooi voor een nieuwe aanpak van ruimtelijke planvorming in complexe stedelijke deltagebieden. Het onderzoek werd uitgevoerd in de periode 2011-2013 door een consortium van drie universiteiten (Technische Universiteit Delft, Wageningen Universiteit en Erasmus Universiteit Rotterdam), vier kennisinstituten (Deltares, TNO, PBL en Geodan) en vier adviesbureaus (MUST Stedebouw, H+N+S Landschaparchitecten, RoyalHaskoningDHV en HKV lijn in water). Het onderzoek richtte zich vooral op het gebied van de Zuidwestelijke delta tussen Rotterdam en Antwerpen.
    Human impacts on tides overwhelm the effect of sea level rise on extreme water levels in the Rhine–Meuse delta
    Vellinga, N.E. ; Hoitink, A.J.F. ; Vegt, M. van der; Zhang, W. ; Hoekstra, P. - \ 2014
    Coastal Engineering 90 (2014). - ISSN 0378-3839 - p. 40 - 50.
    rivieren - waterstand - getijden - zeespiegelschommelingen - delta's - menselijke activiteit - inventarisaties - rivers - water level - tides - sea level fluctuations - deltas - human activity - inventories - river flow - netherlands - variability - subsidence - division - china
    With the aim to link tidal and subtidal water level changes to human interventions, 70 years of water level data for the Rhine–Meuse tidal river network is analysed using a variety of statistical methods. Using a novel parameterization of probability density functions, mean high and low water levels are examined, and extreme water levels are investigated by applying the combined Mann–Kendall and Pettitt tests to find trends and trend changes. Tidal water levels are studied based on harmonic analysis. Results show that the mean water levels throughout the system rise with the same pace as the mean sea level. However, high- and low water levels do not show the same increase, and the spatial variability in decadal trends in high- and low water levels is high. High water and low water extremes generally decrease. Both the extreme water level analysis and the harmonic analysis display significant trend breaks in 1970, 1981 and 1997. These breaks can be attributed to the closure of the Haringvliet estuary, the removal of sluices and the removal of a dam, respectively, which radically alter the tidal motion. These results demonstrate that the direct human influence on the tidal motion can overwhelm the effect of mean sea level rise on water level extremes.
    Samen op zoek naar nieuwe kansen
    Wijsman, J.W.M. - \ 2014
    Vlissingen : Delta Academy van Hogeschool Zeeland; University of Applied Sciences - 10
    aquacultuur - delta's - samenwerking - diversiteit - natuurgebieden - transport over water - openbare redes - waterbeheer - natuurbeheer - aquacultuur en milieu - waterkwaliteit - afvalwater - waterzuivering - aquaculture - deltas - cooperation - diversity - natural areas - water transport - public speeches - water management - nature management - aquaculture and environment - water quality - waste water - water treatment
    Dit lectoraat richt zich specifiek op aquacultuur in deltagebieden. Een delta kenmerkt zich door een grote dynamiek als gevolg van de getijdenwerking vanuit zee, door de menging van zout- met zoetwater en de slib- en nutriëntenaanvoer vanuit de rivier. Veel verschillende functies komen er samen. De veelheid aan functies leidt vaak tot conflicten, maar soms kunnen verschillende functies elkaar juist versterken. Dit maakt aquacultuur in deltagebieden een zeer interessant onderzoeksthema waar verschillende belangen en disciplines samenkomen. Zo vindt in Nederland de extensieve schelpdierkweek plaats in Natura-2000 gebieden. Enerzijds is de kweek afhankelijk van natuurwaarden zoals productiviteit en waterkwaliteit. Anderzijds kan het de natuurwaarden ook positief of negatief beïnvloeden. De uitdaging zit hem in het zoeken naar kansen waarbij aquacultuur en andere gebruiksfuncties zoals natuur, veiligheid en recreatie elkaar versterken om daar waar conflicten optreden samen te zoeken naar oplossingen.
    Enabling Delta Life - What makes managing land and water in deltas different?
    Makaske, B. ; Driel, W.F. van; Marchand, M. ; Bucx, T. ; Guchte, C. van de - \ 2013
    Wageningen : Delta Alliance - 48
    klimaatverandering - landgebruik - delta's - zeeniveau - hoogwaterbeheersing - azië - climatic change - land use - deltas - sea level - flood control - asia
    This discussion paper describes an integrated framework for delta assessment, the need for specific strategies for deltas, especially as it relates to integrated water resources management, and taking into account the increasing interest for the institutional, socio-economic, financial and awareness-raising aspects.
    Samenhang in de Delta, ontwikkelingsvarianten voor de Zuidwestelijke Delta: ecologische ontwikkeling van habitats en levensgemeenschappen (deel 2)
    Ysebaert, T. ; Tangelder, M. ; Wijsman, J.W.M. - \ 2013
    Yerseke : IMARES (Rapport / IMARES Wageningen UR C159/13) - 64
    zuidwest-nederland - estuaria - aquatische ecologie - delta's - habitats - zoet water - zout water - south-west netherlands - estuaries - aquatic ecology - deltas - habitats - fresh water - saline water
    De Deltawerken brachten weliswaar veiligheid, maar daarmee verdween ook een groot deel van een zeer waardevol estuarien ecosysteem. Het oorspronkelijk stelsel van estuaria veranderde in een serie van elkaar gescheiden waterbekkens. Zoet en zout water zijn in de huidige situatie grotendeels gescheiden. Alleen de Westerschelde behield het karakter van een estuarium. Voorliggende rapportage geeft inzicht in de ecologische potenties van verschillende ontwikkelingsvarianten voor de Zuidwestelijke Delta (ZW Delta) als geheel en voor de verschillende waterbekkens binnen de ZW Delta. Hierbij gaat het om de ecologische potenties binnen de buitendijkse gebieden. In een eerdere studie, (IMARES, 2013), is een ecologische indeling ontwikkeld van systeem- en habitattypen die gebruikt kan worden om de verschillende ontwikkelvarianten op een gestandaardiseerde manier met elkaar te vergelijken. Voorliggende studie betreft de vervolgstap waarin een analyse is uitgevoerd naar het potentieel voorkomen van habitats en daarbij horende levensgemeenschappen in de verschillende ontwikkelvarianten
    Data rapport: Het effect va vooroeververdediging op bodemorganismen in de Oosterschelde: 2012
    Brink, A.M. van den; Hartog, E. ; Kluijver, M. de - \ 2013
    Yerseke : IMARES (Rapport / IMARES Wageningen UR C101/13) - 52
    oeverbescherming van rivieren - bodemecologie - oosterschelde - kustbeheer - delta's - zeeland - riverbank protection - soil ecology - eastern scheldt - coastal management - deltas - zeeland
    De stromingen in de Ooster-en Westerschelde zorgen lokaal voor erosie van oevers en geulwanden. Om dat proces tegen te gaan worden, op die locaties waar deze erosie de stabiliteit van de waterkering in gevaar brengt of de reeds bestaande oeverwerken ondermijnt, oevers beschermd door “bestortingen” uit te voeren. . In 2012 is geen volledige monitoring van alle locaties gepland, maar is besloten om op één locatie een vinger aan de pols te houden om de ontwikkeling van planten, dieren en metalen te kunnen blijven volgen. Het gaat hierbij om de locatie Zuidhoek - De Val / Zeelandbrug. Het doel van deze monitoring is het bepalen van de samenstelling en biodiversiteit van de aanwezige levensgemeenschappen op harde en zachte substraten, en de bepaling van de gehalten aan zware metalen in mosselen en oesters
    Toetsingsrapportage NHI 3.0
    Hoogewoud, J.C. ; Prinsen, G.F. ; Hunink, J.C. ; Veldhuizen, A.A. ; Bolt, F.J.E. van der; Lange, W.J. de - \ 2013
    [Delft] : Deltares - 124
    grondwater - grondwaterstroming - oppervlaktewater - hydrologische gegevens - modellen - watersystemen - zoet water - delta's - waterbeleid - groundwater - groundwater flow - surface water - hydrological data - models - water systems - fresh water - deltas - water policy
    Het Nationaal Hydrologisch Instrumentarium (NHI) is een geïntegreerd landsdekkend grond- en oppervlaktewatermodel van Nederland. Het doel van het Nationaal Hyrologisch Instrumentarium is om hydrologische ondersteuning te bieden aan beleids- en operationele studies op landelijk (en zoveel mogelijk regionaal) niveau. Deze rapportage beschrijft de toetsing van NHI 3.0. De modelresultaten worden vergeleken met de criteria, die zijn opgesteld door RWS-STOWA en er wordt gekeken naar de toepasbaarheid voor de Deltamodel-Zoetwaterverkenning.
    Langlopend merkprogramma voor haaien en roggen in de Zeeuwse kustwateren: de resultaten van 2011 - 2012
    Winter, H.V. ; Overzee, H.M.J. van - \ 2013
    IJmuiden : IMARES (Rapport / IMARES Wageningen UR C085/13) - 26
    kustgebieden - zeezoogdieren - delta's - zuidwest-nederland - coastal areas - marine mammals - deltas - south-west netherlands
    In 2011 is een meerjarig merkprogramma opgezet voor haaien in de Zeeuwse kustwateren. Dit project is geïnitieerd door Sportvisserij Nederland en wordt uitgevoerd in samenwerking met Stichting Noordzee en IMARES, Wageningen UR . In eerste instantie was de focus op de gevlekte gladde haai, omdat die relatief veel wordt gevangen in de Zeeuwse Delta, maar in 2012 is de focus uitgebreid naar een breder spectrum aan soorten haaien en zijn ook roggen gemerkt . Het doel van dit onderzoek is tweeledig: 1) over de biologie van deze soorten is nog relatief weinig bekend en met merk - terugvangst experimenten wordt kennis verkregen over bijvoorbeeld de verspreiding en beweging van gevlekte gladde haaien en andere soorten; 2) daarnaast werd dit merkprogramma gekoppeld aan een voorlichting - en publiciteitscampagne om meer bewustwording te genereren over de status van de haaien en roggen (elasmobranchen) van de Noordzee
    Samenhang in de Delta, ontwikkelingsvarianten voor de Zuidwestelijke Delta: Ecologische onderbouwing (deel 1)
    Ysebaert, T. ; Tangelder, M. ; Wijsman, J.W.M. ; Troost, K. - \ 2013
    Yerseke : IMARES (Rapport / IMARES Wageningen UR C073/13) - 46
    zuidwest-nederland - delta's - zout water - zoet water - watervoorziening - scenario-analyse - south-west netherlands - deltas - saline water - fresh water - water supply - scenario analysis
    Het Planbureau voor de Leefomgeving (PBL) voert een studie uit naar “Samenhang in de delta, ontwikkelingsvarianten voor de Zuidwestelijke Delta”. Het doel van deze studie is het opstellen van een gedeeld beeld van mogelijke ontwikkelingsrichtingen voor de ZW Delta. De varianten “Zoute Delta” (volledig open zeearmen) en “Zoete Delta” (afgedamde, zoete bekkens) geven een vergezicht voor de lange termijn. De ontwikkelingsvarianten adresseren in samenhang opgaven voor economische ontwikkeling, bescherming tegen overstromingen, zoetwatervoorziening en ecologische ontwikkeling binnen het ZW Delta.
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