4266 resultaten

  • Ecological consequences of sea level rise and flood protection strategies in shallow coastal systems : a quick-scan barcoding approach

    Auteurs: Timmerman, A.; Haasnoot, M.; Middelkoop, H.; Bouma, T.; McEvoy, S. (2021)
    Gepubliceerd in: Ocean and coastal management, volume 210 (2021), pagina 1-13

    Shallow coastal ecosystems have high ecological value and contribute to flood protection. Their stability is, however, sensitive to the amount and rate of future sea level rise (SLR), their ability to trap sediment which allows them to grow with rising sea level, and human response to SLR. So far, studies have focused on assessing SLR impacts using resource-intensive tools. Here, we present an approach for a first-order assessment and easily accessible ‘barcode’ visualization to rapidly assess potential impacts of both SLR and adaptation strategies on coastal ecosystems in a spatially explicit way. Our approach relates habitat types (ecotopes) to water level, morphology and salinity, allowing users to determine shifts in spatial arrangements of ecological zones under different SLR rates and strategies. We illustrate this approach for a transect in the Dutch Wadden Sea. We find that beyond a critical rate of SLR, major changes in ecotope distribution are projected to occur as this part of the Wadden Sea starts to drown due to insufficient sediment import. Even larger impacts arise from adaptation strategies. Closing the barrier islands will turn the Wadden Sea into a freshwater lake-system with the absence of intertidal areas, infilling of channels and bank erosion. A strategy that allows for inland migration of the shoreline, results in a deep tidal basin with large subtidal habitats, and a shifted intertidal zone. Our case study shows that the barcoding approach provides a rapid, quantitative and spatially explicit overview of the potential implications for coastal ecosystems under different SLR scenarios, adaptation strategies and time horizons. This can then be used to screen adaptation strategies before going into a more comprehensive analysis. The barcode visualization allows for easy dissemination of potential ecological impacts to a broad community.

  • EMODnet Bathymetry - High Resolution Seabed Mapping : increasing the resolution of the digital bathymetry for European seas

    Auteurs: Schmitt, T.; Schaap, D.M.A.; Spoelstra, G.; Loubrieu, B.; Pertuisot, C.; Verlaan, M.; Gaytan Aguilar, S.; Campos, R.; Hartmann, K.A. (2021)

    The EMODnet Bathymetry project is active since 2008 and has developed Digital Terrain Models (DTM) for the European seas, which are published at a regular interval, each time extending coverage, improving quality and precision, and expanding functionalities for viewing, using, and downloading. This presentation highlights key details of the EMODnet Bathymetry process, results and the ongoing activities for further improving the digital bathymetry and services.

  • Supporting the essential : recommendations for the development of accessible and interoperable marine biological data products

    Auteurs: Lear, D.; Herman, P. (2021)

    The European Marine Data and Observation Network (EMODnet) Biology project has undertaken unparalleled activity in the collation and standardisation of marine biological data from all European seas and the wider North East Atlantic region since 2009. We outline stakeholder-led approaches in the development of data products based on marine biological observations to support effective conservation, management and policy development.

  • Automated extraction and fusion of the intertidal and subtidal bathymetry from the Landsat and Sentinel satellite data

    Auteurs: Donchyts, G.; Santinelli, G.; Luijendijk, A.P.; Moreno-Rodenas, A.M.; Verlaan, M. (2021)

    Monitoring of the intertidal and subtidal bathymetry at large spatiotemporal scales using traditional surveying methods is a challenging and costly task. With the abundance of freely available satellite data and the availability of parallel processing platforms like Google Earth Engine, an automated derivation of bathymetry from satellite data sounds very attractive. A number of methods exist to extract bathymetry from satellite data, including methods to derive bathymetry for the intertidal zone, by combining water/land boundary dynamics with the water level measurements. At the same time, the light attenuation in a water column, observed by optical satellite sensors, can be used to infer water depth from spectral reflectance, providing a way to estimate subtidal bathymetry. In this research, we will discuss both of these methods and explore how they can be combined to generate consistent intertidal and subtidal bathymetry data.

  • 10 years of EMODnet Biology : past, present and future

    Auteurs: Beja, J.; Vandepitte, L.; Perez, R.; Poffyn, G.; Lear, D.; Gerovasileiou, V.; Herman, P.; Vanhoorne, B.; Tyberghein, L. (2021)

    EMODnet Biology is part of a network of more than 150 organisations working towards making European marine data easily accessible and available across seven thematic disciplines. The infrastructure and data flow used within EMODnet Biology is based upon that of EurOBIS (the European OBIS node), hosted at the Flanders Marine Institute (VLIZ). The fact that the two initiatives are interconnected means that any technical changes and/or tools developed in one initiative can be used by the other. Due to this symbiotic approach, EMODnet Biology data can also be seamlessly integrated with wider networks such as OBIS (Ocean Biogeographic Information System) and GBIF (Global Biodiversity Information Facility).

  • Digital twin of the North Sea : a visual geo tool with computer modelling to support stakeholder engagement, to aid decision makers and support citizen involvement

    Auteurs: Staeb, J.A.; Mayer, I.; Koldenhof, Y.; Baart, F.; Jeurissen, P.; Thijsse, P. (2021)

    The North Sea is very busy and many users like fishery, wind farms, sea traffic, nature, military and recreation are requesting space. The project Digital twin of the North Sea (Digitwin) created a ready-to-use platform bringing together new technologies such as open source data and mapping services, cloud computing, gaming and virtual reality. This will bring a better understanding of the pressures all stakeholders experience, and will lead to better decision making.

  • SeaDataCloud Virtual Research Environment : implementation and technical aspects

    Auteurs: Buurman, M.; Troupin, C.; Barth, A.; Bruvry-Lagadec, L.; Mieruch, S.; Krishnan, N.; Santinelli, G.; Baart, F.; Thijsse, P.; Waumans, F.; Zamani, T. (2021)

    A Virtual Research Environment (VRE) is a collaborative environment to perform data-driven research. The SeaDataCloud VRE is a pilot application and supports research with marine data and SeaDataNet tools in the cloud. This abstract focuses on the architecture and technical details. Described the shared components, processing services and private workspace.

  • Working with the SeaDataCloud Virtual Research Environment : what can we do for you?

    Auteurs: Troupin, C.; Barth, A.; Bruvry-Lagadec, L.; Buurman, M.; Kaitila, S.; Krishnan, N.; Mieruch, S.; Santinelli, G.; Thijsse, P.; Waumans, F.; Zamani, T. (2021)

    In order to provide the oceanographic community with seamless access to the SeaDataNet data, standard and software tools, the SeaDataCloud (SDC) Virtual Research Environment (VRE) has been developed. This paper describes the tools made available to users.

  • Objectifying Building with Nature strategies : towards scale-resolving policies

    Auteurs: Vries, M.B. de; Koningsveld, M. van; Aarninkhof, S.G.J.; Vriend, H.J. de (2021)

    By definition, Building with Nature solutions utilise services provided by the natural system and/or provide new opportunities to that system. As a consequence, such solutions are sensitive to the status of, and interact with the surrounding system. A thorough understanding of the ambient natural system is therefore necessary to meet the required specifications and to realise the potential interactions with that system. In order to be adopted beyond the pilot scale, the potential impact of multiple BwN solutions on the natural and societal systems of a region need to be established. This requires a ‘reality check’ of the effectiveness of multiple, regional-scale applications in terms of social and environmental costs and benefits. Reality checking will help establish the upscaling potential of a certain BwN measure when addressing a larger-scale issue. Conversely, it might reveal to what extent specific smaller-scale measures are suitable in light of larger regional-scale issues. This paper presents a stepwise method to approach a reality check on BwN solutions, based on the Frame of Reference method described in a companion paper (A systematic design approach for objectifying Building with Nature solutions, 2021) and illustrates its use by two example cases. The examples show that a successful pilot project is not always a guarantee of wider applicability and that a broader application may involve dilemmas concerning environment, policy and legislation.

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