Curriculum Vitae
Dr. Daphne van der Wal (1969) is a physical geographer, specialized in coastal geomorphology/ecology and in GIS/remote sensing.
In 1999, I obtained a PhD degree from the University of Amsterdam on aeolian transport of nourishment sand. Between 1999 and 2002, I worked as a post-doctoral researcher at Royal Holloway, University of London, linking changes in estuarine and saltmarsh morphology to environmental and anthropogenic drivers. Since 2002, I have been a research scientist at NIOO, where I introduced GIS and remote sensing, and expanded this line of research.
The central theme of my work is to quantify, understand and predict interactions between biota and their environment shaping the estuarine and coastal landscape. Methods include spatial modelling in GIS, forward and inverse modelling with remote sensing data (radar, optical and TIR satellite data and hyperspectral and lidar airborne data) for retrieving key variables (elevation, sediment texture, bed roughness, algal biomass and primary production, macrobenthic diversity, saltmarsh vegetation), combined with hydrodynamic models and field data.
Current research themes seek to unravel (1) the mechanisms of saltmarsh development, (2) the dynamics of intertidal sediments, (3) the structuring and functioning of intertidal benthic communities, and (4) benthic-pelagic interactions in estuaries and lagoons.
I have been referee for research grant applications and reviewer for over 20 scientific journals. I am also Associate Editor of Wetlands.
Projects
NWO/ALW/NSO Ruimteonderzoek Project (2011-2016)
Consequences of global change for ecosystem engineering effects of shellfish
Rijkswaterstaat MONEOS Project (2011-2013)
Structuring of estuarine macrobenthos in response to hydrodynamic forcing
ESA Category I Project (2008-2012)
Benthic-pelagic processes in intertidal areas unravelled with remote sensing
RS-Slib/Bodem Project for LTV-Slib, Deltares (2008-2012)
Estimating mud dynamics from remotely sensed observations
BELSPO STEREO II Algased Project (2008-2010)
(with Hydraulics Laboratory KU Leuven, University of Ghent and CEFAS)
Remote sensing for the characterisation of intertidal sediments and microphytobenthos
FOKUZ Project (2008-2009)
Dynamics of intertidal benthic algae in contrasting European ecosystems
ProSes / Rijkswaterstaat Project (2007-2008)
Monitoring intertidal mud and microphytobenthos using remote sensing
RIKZ / NIOO-KNAW Project (2004 - 2012) and related STW Project
(PI Tjeerd Bouma)
Quantifying the relative importance of extreme hydrodynamic conditions as threshold for saltmarsh rejuvenation
Project Walsoorden for Flanders Hydraulics Research (2004-2009)
Alternative dredging strategy for the Westerschelde: ecology
NWO/ALW/SRON USP Project (2004 - 2006)
Remote sensing of estuarine intertidal flats for mapping benthic ecology
ESA Category I Project (2003 - 2006)
Satellite radar remote sensing of intertidal flats
NIOO-KNAW Project (2002 - 2007)
A GIS appraisal of patterns, rates and mechanisms of saltmarsh development
Selected Publications
Reprints or PDF of these publications can be requested at library@nioo.knaw.nl
Selected articles
van der Wal, D., P.M.J. Herman. Ecosystem engineering effects of Aster tripolium and Salicornia procumbens salt marsh on macrofaunal community structure. Estuaries and Coasts.
Montserrat, F., W. Suykerbuyk, R. Al-Busaidi, T.J. Bouma, D. van der Wal and P.M.J. Herman (2011). Effects of mud sedimentation on lugworm ecosystem engineering. Journal of Sea Research 65: 170-181.
van der Wal, D., R.M. Forster, F. Rossi, H. Hummel, T. Ysebaert, F. Roose, P.M.J. Herman (2011). Ecological evaluation of an experimental beneficial use scheme for dredged sediment disposal in shallow tidal waters.
Marine Pollution Bulletin 62: 99-108.
Callaghan, D.P., T.J. Bouma, P. Klaassen, D. van der Wal, M.J.F. Stive, P.M.J. Herman (2010). Hydrodynamic forcing on saltmarsh-development: distinguishing the relative importance of waves and tidal flows.
Estuarine, Coastal and Shelf Science 89: 73-88.
Van Colen, C., A. De Backer, G. Meulepas, D. van der Wal, M. Vincx, S. Degraer, T. Ysebaert (2010). Diversity, trait displacements and shifts in assemblage structure of tidal flat deposit feeders along a gradient of hydrodynamic stress.
Marine Ecology Progress Series 406: 79-89.
van der Wal, D., T. van Kessel, M.A. Eleveld, J. Vanlede (2010). Spatial heterogeneity in estuarine mud dynamics.
Ocean Dynamics 60: 519-533.
van der Wal, D., A. Wielemaker-van den Dool, P.M.J. Herman (2010)
Spatial synchrony in intertidal benthic algal biomass in temperate coastal and estuarine ecosystems.
Ibrahim, E., S. Adam, D. van der Wal, A. De Wever, K. Sabbe, R. Forster, J. Monbaliu (2009).
Assessment of unsupervised classification techniques for intertidal sediments.
EARSeL eProceedings 8: 158-179.
van der Wal, D., A. Wielemaker-van den Dool, P.M.J. Herman (2008)
Spatial patterns, rates and mechanisms of saltmarsh cycles (Westerschelde, The Netherlands).
Estuarine Coastal and Shelf Science 76: 357-368
Abstract: http://dx.doi.org/10.1016/j.ecss.2007.07.017
van der Wal, D., P.M.J. Herman, R.M. Forster, T. Ysebaert, F. Rossi, E. Knaeps, Y.M.G. Plancke, S.J. Ides (2008)
Distribution and dynamics of intertidal macrobenthos predicted from remote sensing: response to microphytobenthos and environment.
Marine Ecology Progress Series 367: 57-72
Open Access: http://www.int-res.com/articles/meps_oa/m367p057.pdf
van Wesenbeeck, B.K., J. van de Koppel, P.M.J. Herman, M.D. Bertness, D. van der Wal, J.P. Bakker, T.J. Bouma (2008)
Potential for sudden shifts in transient systems; distinguishing between local and landscape-scale processes.
Ecosystems 11: 1133-1141
Abstract: http://dx.doi.org/10.1007/s10021-008-9184-6
van der Wal, D., P.M.J. Herman (2007)
Regression-based synergy of optical, shortwave infrared and microwave remote sensing for monitoring the grain-size of intertidal sediments.
Remote Sensing of Environment 111 (1): 89-106.
Abstract: http://dx.doi.org/10.1016/j.rse.2007.03.019
Temmerman, S., T.J. Bouma, J. van de Koppel, D. van der Wal, M.B. de Vries, P.M.J. Herman (2007)
Vegetation causes channel erosion in a tidal landscape.
Geology 35 (7): 631-634
Abstract: http://dx.doi.org/10.1130/G23502A.1
Full text: http://www.vliz.be/imisdocs/publications/125276.pdf
van de Koppel, J., D. van der Wal, J.P. Bakker, P.M.J. Herman (2005).
Self-organization and vegetation collapse in salt-marsh ecosystems.
The American Naturalist 165: E1-E12.
van der Wal, D., P.M.J. Herman, A. Wielemaker-van den Dool (2005)
Characterisation of surface roughness and sediment texture of intertidal flats using ERS SAR imagery.
Remote Sensing of Environment 98 (1): 96-109.
Abstract: http://dx.doi.org/10.1016/j.rse.2005.06.004
Saye, S.E., D. van der Wal, K. Pye, S.J. Blott (2005)
Beach-dune morphological relationships and erosion/accretion: an investigation at five sites in England and Wales using LIDAR data.
Geomorphology 72 (1-4): 128-155.
Abstract: http://dx.doi.org/10.1016/j.geomorph.2005.05.007
van der Wal, D., K. Pye (2004)
Patterns, rates and possible causes of saltmarsh erosion in the Greater Thames area (UK).
Geomorphology 61 (3-4): 373-391.
van der Wal, D. (2004)
Beach-dune interactions in nourishment areas along the Dutch coast.
Journal of Coastal Research 20: 317-325.
Abstract: http://dx.doi.org/10.2112/1551-5036(2004)20[317:BIINAA]2.0.CO;2
van der Wal, D., P.M.J. Herman, T. Ysebaert (2004)
Space-borne Synthetic Aperture Radar of intertidal flat surfaces as a basis for predicting benthic macrofauna distribution.
EARSeL eProceedings 3 (1): 69-80.
van der Wal, D., K. Pye (2003)
The use of historical bathymetric charts in a GIS to assess morphological change in estuaries.
The Hydrographic Journal 110: 3-9. [Reprint of The Geographical Journal 169 (1): 21-31]
(Awarded the Hydrographic Society's prize for Best First Paper published in The Hydrographic Journal in 2003)
van der Wal, D., K. Pye (2003)
The use of historical bathymetric charts in a GIS to assess morphological change in estuaries.
The Geographical Journal 169 (1): 21-31.
Abstract: http://dx.doi.org/10.1111/1475-4959.04943
van der Wal, D., K. Pye, A. Neal (2002)
Long-term morphological change in the Ribble Estuary, northwest England.
Marine Geology 189 (3-4): 247-264
Abstract: http://dx.doi.org/10.1016/S0025-3227(02)00476-0
van der Wal, D. (1998)
The impact of the grain-size distribution of nourishment sand on aeolian processes.
Journal of Coastal Research 14 (2): 620-631.
Abstract: http://www.jstor.org/stable/4298816
Full text: http://www.vliz.be/imisdocs/publications/56258.pdf
van der Wal, D. (1996)
The development of a Digital Terrain Model for the geomorphological engineering of the rolling foredune of Terschelling, The Netherlands. Journal of Coastal Conservation 2 (1): 55-62.
Abstract: http://dx.doi.org/10.1007/BF02743037
Selected book chapters and papers in conference proceedings
Ibrahim, E., A. Govaerts, P. Regmi, J. Druyts, D. van der Wal, S. Adam, A. Vervoort, J. Monbaliu, A. De Wever, K. Sabbe, R. Forster (2010)
Effect of spatial resolution on intertidal sediment characterization.
In: I. Manakos & C. Kalaitzidis (eds). Imagin[e,g] Europe. IOS Press, Amsterdam, pp. 182-189.
van der Wal, D., T. Ysebaert, R.M. Forster, F. Rossi, T.J. Bouma, P.M.J. Herman, Y.M.G. Plancke (2008)
Synoptic techniques for monitoring the response of intertidal benthic biota to an alternative dredging strategy.
In: C.M. Dohmen-Janssen & S.J.M.H. Hulscher (eds). River, coastal and estuarine morphodynamics. Tayler & Francis, London, vol. 1, pp. 307-311.
Perez Calero, D., A. Peyaud, D. van der Wal, J. van 't Hof, H. Hakkesteegt, R. Vink, E.G. P. Bovenkamp, G. van Antwerpen (2008)
Low altitude remote sensing.
In: Meynart, R., S.P. Neeck, H. Shimoda, S. Habib (eds). Sensors, Systems, and Next-Generation Satellites XII. Proc. SPIE, vol. 7106, 71061B. http://dx.doi.org/10.1117/12.799809
van der Wal, D., P.M.J. Herman (2006)
Quantifying the particle size of intertidal sediments with satellite remote sensing in the visible light, thermal infrared and microwave spectral domain.
In: Kerle, N., A.K. Skidmore (eds). Remote Sensing: From Pixels To Processes. ISPRS Proc. TC VII. ITC, The Netherlands.
van der Wal, D., A. Wielemaker-van den Dool, P.M.J. Herman (2005)
Mapping surface roughness and sediment texture of an estuarine intertidal flat using ERS-2 SAR imagery.
Proc. 2004 Envisat & ERS Symposium, Salzburg, Austria. European Space Agency, Noordwijk. ESA SP-572.
van der Wal, D., J.H.B.W. Elgershuizen, P.D. Jungerius (1995)
The Development of a Digital Terrain Model for the geomorphological engineering of the rolling foredune of Terschelling.
In: A. Salman, M. Bonazountas & H. Berends (eds). Coastal management and habitat conservation, volume 2, EUCC, Leiden, pp. 417-425.
Selected articles in national journals
van der Wal, D., P.M.J. Herman, T. Ysebaert (2006)
Leven in het sediment: teledetectie van benthische ecologie in intergetijdengebieden.
Water 26 (1): 41-45
Open Access: http://www.tijdschriftwater.be/water26-10HI.pdf
Arens, S.M., D. van der Wal (1998)
Zeereep open voor invloed natuur.
Geografie 7 (3): 18-21.
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