Name Dr. ir. R.P. (Ruud) Bartholomeus Dr R.P. (Ruud) Bartholomeus MSc Hydrologist

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1 Name Dr. ir. R.P. (Ruud) Bartholomeus Dr R.P. (Ruud) Bartholomeus MSc Hydrologist Profile Ruud Bartholomeus studied Land and Water Management at Hogeschool Larenstein and Hydrology and Water Quality, with a specialisation in Soil Physics, Agrohydrology and Groundwater Management, at Wageningen University. After his graduation (Cum Laude), he started his PhD research at the department of Systems Ecology at the Institute of Ecological Science of the VU University Amsterdam and at KWR Watercycle Research Institute. During his PhD research, he developed process-based relationships between water, oxygen and vegetation, with a focus on the interacting physical and physiological processes in the soilplant-atmosphere system. This research was part of a large project on the development of a model to predict the vegetation composition in future climatic conditions. He won the Hydrology Prize for the years 2007 to 2009 of the Netherlands Hydrological Society for the best publication entitled Critical soil conditions for oxygen stress to plant roots: Substituting the Feddes-function by a process-based model. He now works as scientific researcher at KWR Watercycle Research Institute, amongst others, on a climate-proof evapotranspiration procedure for groundwater models, taking into account the feedback mechanisms of the vegetation to climate change, and on methods to quantify the effect of too little or too much water on agricultural crops. Specialties: hydrology, ecology, ecohydrology, agrohydrology, crop damage, drought stress, oxygen stress, climate change, unsaturated zone modeling, soil-water-plant-atmosphere interactions, actual evapotranspiration, groundwater recharge, plant physiology Education ; PhD. VU University Amsterdam and KWR Watercycle Research Institute; thesis: Moisture Matters; Climate-proof and process-based relationships between water, oxygen and vegetation (graduation ) ; MSc. Hydrology and Water Quality, specialisation Soil Physics, Agrohydrology and Groundwater Management, Wageningen University (graduation Cum Laude, ) ; BSc. Land and Water Management, Hogeschool Larenstein, Velp Work experience 2009-present; KWR Watercycle Research Institute, Scientific researcher, hydrologist ; VU University and KWR Watercycle Research Institute, PhD student Awards The Hydrology Prize for the years 2007 to 2009 of the Netherlands Hydrological

2 Society for the best publication entitled Critical soil conditions for oxygen stress to plant roots: Substituting the Feddes-function by a process-based model published in Journal of Hydrology 360: Projects Groundwater for Crop: Naar een beslissingsondersteunend systeem voor optimale gewasproductie door efficiënt waterbeheer (T550013) Ecohydrological Stress: Groundwater to Stress Transfer (O710035) Actualisatie schadefuncties landbouw (A308963) Landbouwschade drinkwaterwinning KWR In search of the actual groundwater recharge BTO (s) Verkenning bepaling droogteschade BTO (s) Publications 2014 Bartholomeus, R.P., Heijkers, J., Droogers, P., Van Dam, J.C., Van Walsum, P., Actuele verdamping in hydrologische modellen. In: NHV_werkgroep_Verdamping (Ed.), Schatting van de actuele verdamping. Verdamping in de hydrologie, een actuele stand van zaken. NHV-special. In review. Eertwegh, G., Droogers, P., Bierkens, M., Bosveld, F. en Bartholomeus, R.P., Berekening van referentie en potentiele verdamping. In: NHV_werkgroep_Verdamping (Ed.), Schatting van de actuele verdamping. Verdamping in de hydrologie, een actuele stand van zaken. NHV-special. In review Bartholomeus, R.P., Kroes, J., Van Bakel, J., Hack-ten Broeke, M., Walvoort, D. en Witte, J.P.M., Naar verbeterde schadefuncties voor de landbouw. Stromingen, 19(3/4): pp-pp. Voortman, B.R., Bartholomeus, R.P., van Bodegom, P.M., Gooren, H., van der Zee, S.E.A.T.M. en Witte, J.P.M., Unsaturated hydraulic properties of xerophilous mosses: towards implementation of moss covered soils in hydrological models; Hydrological Processes, pag n/a-n/a, DOI: /hyp Bartholomeus, R.P., Voortman, B.R., Witte, J.P.M., Metingen en proceskennis vereist voor nauwkeurige verdampingsberekening in grondwatermodellen. Stromingen, 19(2): Bartholomeus, R.P., Witte, J.P.M., Ecohydrological Stress - Groundwater To Stress Transfer; Theory and manual version 2.0. KWR , Nieuwegein. Hack-ten Broeke, M., Kroes, J., Hendriks, R., Bartholomeus, R., Van Bakel, J. en Hoving, I. (2013) Actualisatie schadefuncties voor de landbouw, tussenfase 2a: plausibiliteitstoets SWAP en enkele verkennende berekeningen, STOWA 2013(37). Bartholomeus, R.P., Kroes, J., Hack-ten Broeke, M., Van Bakel, J. en Ruijtenberg R. (2013). Landbouwschade door ander waterbeheer beter te bepalen, H2O, 7/8: 22. Van Bodegom, P.M., Verboom, J., Witte, J.P.M., Vos, C.C., Bartholomeus, R.P., Geertsema, W., Cormont, A., Veen, M. en Aerts, R. (2013) Synthesis of ecosystem vulnerability to climate change in the Netherlands shows the need to consider environmental fluctuations in adaptation measures. Regional Environmental Change, pag DOI: /s x Bakker, M., Bartholomeus, R.P., Ferré, T.P.A., Preface "Groundwater recharge: processes and quantification". Hydrology and Earth System Sciences, 17(7):

3 DOI /hess Aggenbach, C.J.S., Kooijman, A.M., Bartholomeus, R.P., Fujita, Y., Herstelbaarheid van droge duingraslanden in relatie tot accumulatie van organische stof en stikstof in de bodem; KWR , Nieuwegein. Bartholomeus, R.P., Kroes, J., Van Bakel, J., Hack-tenBroeke, M., Witte, J.P.M., Actualisatie schadefuncties landbouw; fase 1. Op weg naar een geactualiseerd en klimaatbestendig systeem van effect van waterbeheer op gewasopbrengst. STOWA , Amersfoort. Bartholomeus, R.P., Kroes, J., Van Bakel, J., Hack-tenBroeke, M., Witte, J.P.M., Notitie project 'Actualisatie schadefuncties landbouw'. KWR rapport (s), Nieuwegein. Bartholomeus, R.P., Klimaatbestendige effectmodule landbouw (HELPtabellen). In: Vergouwen, M. (Ed.), Deltaproof midterm review - Projectenoverzicht. Stichting Toegepast Onderzoek Waterbeheer, Amersfoort. Reyer, C., Leuzinger, S., Rammig, A., Wolf, A., Bartholomeus, R.P. et al., A plant's perspective of extremes: Terrestrial plant responses to changing climatic variability. Global Change Biol, 19(1): DOI: /gcb Bartholomeus, R.P. and Witte, J.P.M., Gewasfactoren en potentiële verdamping: geen klimaatrobuuste combinatie; Het gebruik van gewasfactoren in klimaatprojecties nader onderzocht. KWR rapport BTO (s), Nieuwegein Bartholomeus, R.P., Van Bakel, J., Stroet, R., Schuurmans, H. and Van den Eertwegh, G., Vertrouwelijk rapport. KWR rapport , Nieuwegein. Bartholomeus, R.P., Witte, J.P.M. and Runhaar H., Drought stress and vegetation characteristics on sites with different slopes and orientations. Ecohydrology, 5(6): , DOI: /eco.271. Bartholomeus, R.P., Witte, J.P.M., Runhaar, J., Drought stress and vegetation characteristics on dune slopes. Sand dune and shingle network, Fourteenth Newsletter, April Bartholomeus, R.P., Witte, J.P.M., van Bodegom, P.M., Van Dam, J.C., De Becker, P. and Aerts, R., Process-based proxy of oxygen stress surpasses indirect ones in predicting vegetation characteristics. Ecohydrology, 5(6): , DOI: /eco.261. Douma, J.C., Bardin, V., Bartholomeus, R.P., van Bodegom, P.M., Quantifying the functional responses of vegetation to drought and oxygen stress in temperate ecosystems. Funct Ecol, 26(6): DOI: /j x Douma, J.C., Witte, J.-P.M., Aerts, R., Bartholomeus, R.P., Ordoñez, J.C., Venterink, H.O., Wassen, M.J. and van Bodegom, P.M., Towards a functional basis for predicting vegetation patterns; incorporating plant traits in habitat distribution models. Ecography, 35(4): DOI: /j x Ruijtenberg, R., Bartholomeus, R., Kroes, J., Hack, M. and van Bakel, J., Draagvlak voor (klimaat)robuuste variant van de HELP-tabellen. H 2 O: tijdschrift voor watervoorziening en afvalwaterbehandeling, 44(18): 10. Van Bodegom, P.M., Douma, J.C., Witte, J.P.M., Ordoñez, J.C., Bartholomeus, R.P. and Aerts, R., Going beyond limitations of plant functional types when predicting global ecosystem atmosphere fluxes: exploring the merits of traits-based

4 approaches. Glob Ecol Biogeogr, 21(6): DOI: /j x. Witte, J.P.M., Bartholomeus, R.P., Voortman, B.R., Droogteminnende duinvegetatie zeer zuinig met water. ( Witte, J.P.M., Bartholomeus, R.P., Voortman, B.R., Van der Hagen, H., Van der Zee, S.E.A.T.M., Droge duinvegetatie zeer zuinig met water (Dry dune vegetation very economical with water). Landschap, 29(3): Witte, J.P.M., Runhaar, J., van Ek, R., van der Hoek, D.C.J., Bartholomeus, R.P., Batelaan, O., van Bodegom, P.M., Wassen, M.J. and van der Zee, S.E.A.T.M., An ecohydrological sketch of climate change impacts on water and natural ecosystems for the Netherlands: bridging the gap between science and society. Hydrology and Earth System Sciences, 16(11): /hess Bartholomeus, R.P., Toename stress bedreigt planten. ( Bartholomeus, R.P., Voortman, B. and Witte, J.P.M., De toekomstige grondwateraanvulling. Vuurwerk, 22(3): 13. Bartholomeus, R.P., Voortman, B.R. and Witte, J.P.M., In search of the actual groundwater recharge. KWR rapport BTO (s), Nieuwegein. Bartholomeus, R.P., Witte, J.-P.M., van Bodegom, P.M., van Dam, J.C. and Aerts, R., Climate change threatens endangered plant species by stronger and interacting water-related stresses. Journal of Geophysical Research, 116(G4): G04023, DOI: /2011jg Runhaar, J., Jalink, M. and Bartholomeus, R.P., Invloed van grondwaterstanden op standplaatscondities en vegetatie. De Levende Natuur, 112(4): Van Bodegom, P.M., Verboom, J., Witte, J.P.M., Vos, C., Bartholomeus, R.P., Cormont, A., Geertsema, W. and Van der Veen, M., Vochtige ecosystemen kwetsbaar; Klimaateffecten in Nederland. Landschap, 28(2): Witte, J.P.M., Pastoors, R., Van der Hoek, D.J., Bartholomeus, R.P., Van Loon, A. and Van Bodegom, P.M., Is het Nationaal Hydrologisch Instrumentarium gereed voor het voorspellen van natuureffecten? Stromingen, 17(2): Bartholomeus, R.P., Voortman, B. and Witte, J.P.M., De toekomstige grondwateraanvulling. H2O, 17: Bartholomeus, R.P., Verkenning bepaling droogteschade, KWR rapport BTO (s), Nieuwegein. Bartholomeus, R.P., Witte, J.P.M., Van Bodegom, P.M. and Van Dam, J.C., Nieuwe maat voor bodemvochtregime ook geschikt onder toekomstig klimaat. H2O, 3: Ordoñez, J.C., Van Bodegom, P.M., Witte, J.P.M., Bartholomeus, R.P., Van Hal, J.R. and Aerts R., Plant strategies in relation to resource supply in mesic to wet environments: Does theory mirror nature? American Naturalist, 175(2): Ordoñez, J.C., van Bodegom, P.M., Witte, J.-P.M., Bartholomeus, R.P., van Dobben, H.F. and Aerts, R., Leaf habit and woodiness regulate different leaf economy traits at a given nutrient supply. Ecology, 91(11): Witte, J.P.M., Bartholomeus, R.P., Douma, J.C., Runhaar, J. and Van Bodegom,

5 P.M., De vegetatiemodule van Probe-2, KWR rapport BTO (s), Nieuwegein Bartholomeus, R.P., Moisture Matters; Climate-proof and process-based relationships between water, oxygen and vegetation, VU University, Amsterdam, 128 pp Bartholomeus, R.P., Witte, J.P.M., Van Bodegom, P.M. and Aerts, R., The need of data harmonization to derive robust empirical relationships between soil conditions and vegetation. Journal of Vegetation Science, 19: R., Critical soil conditions for oxygen stress to plant roots: substituting the Feddes-function by a process-based model. Journal of Hydrology, 360: Witte, J.P.M., Bartholomeus, R.P., Cirkel, D.G. and Kamps, P.W.T.J., Ecohydrologische gevolgen van klimaatverandering voor de kustduinen van Nederland, Kiwa rapport KWR , Nieuwegein Bartholomeus, R.P., Finite element modelling of the interaction of open water flow and groundwater. MSc thesis Wageningen University, Wageningen. Bartholomeus, R.P., Van Dongen, R.J.J. and De Louw, P.G.B., Onderzoek naar kwelafhankelijke vegetatie in beekdal het Merkske. H2O, 10: Bartholomeus, R.P., Implementation of a global radiation routine in SWAP and its application to inclined surfaces. MSc thesis (minor) Wageningen University, Wageningen. Bartholomeus, R.P. and Van Dongen, R.J.J., Eerst het water, de rest komt later; Onderzoek naar de belangrijkste factoren bij realisatie van kwelafhankelijke vegetatie in beekdalen. TNO-report NITG B, BSc thesis Hogeschool Larenstein, Velp Proceedings and abstracts Bartholomeus, R.P., Witte, J.P.M., Drought stress and vegetation characteristics on sites with different slopes and orientations. International Symposium Patterns in Soil-Vegetation-Atmosphere-Systems: Monitoring, Modelling & Data Assimilation. University of Bonn, March Book of Abstracts. Voortman, B.R., Bartholomeus, R.P., Witte, J.P.M., Quantifying soil evaporation and transpiration at the scale of a remote sensing pixel by extrapolating mini-lysimeter results with the aid of remote sensed surface temperatures. International Symposium Patterns in Soil-Vegetation-Atmosphere-Systems: Monitoring, Modelling & Data Assimilation. University of Bonn, March Book of Abstracts. Voortman, B.R., Bartholomeus, R.P., Witte, J.P.M. (2012). Quantifying soil evaporation and transpiration at the scale of a remote sensing pixel by extrapolating mini-lysimeter results with the aid of remote sensed surface temperatures. Abstract H31K-03, presented at AGU Fall Meeting, 3-7 dec., San Fransisco, Calif.

6 Bartholomeus, R.P., Witte, J.P.M., Van Bodegom, P.M., Van Dam, J.C., Aerts, R., Contrasting extremes in water-related stresses determine species survival, EGU General Assembly Geophysical Research Abstracts, Vol. 14, EGU ,Vienna, Austria. R., Climate change threatens endangered plant species by stronger and interacting water-related stresses In: Symposiumgids, Samenvattingen Bodem Breed P. Van Mullekom (Editor), Bodembreed symposium SKB, Lunteren, pp. 80. Mohammadi, M.H., Vanclooster, M. and Bartholomeus, R.P., 2011.Modeling the global warming effect on the upper limit of water uptake by plants. International Conference on Climate Change and Global Warming (ICCCGW 2011), Venice (Italy) Voortman, B.R., Bartholomeus, R.P. and Witte, J.P.M., The future groundwater recharge: evapotranspiration response of natural vegetation to climate change. In: S. Keesstra and G. Mol (Editors), Wageningen Conference on Applied Soil Science Soil Science in a Changing World September 2011, Wageningen, The Netherlands. Voortman, B.R., Bartholomeus, R.P. and Witte, J.P.M., The future groundwater recharge: evapotranspiration response of natural vegetation to climate change. Abstract 102 presented at HydroEco2011, Hydrology and Ecology: Ecosystems, Groundwater and Surface Water - Pressures and Options. Vienna, Austria, 2-5 May, p. 46. Bartholomeus, R.P. and Witte, J.P.M., Drought stress and vegetation characteristics on sites with different slopes and orientations, EGU General Assembly Geophysical Research Abstracts, Abstract EGU , Vienna, Austria. R., Climate change hampers endangered species by stronger water-related stresses, EGU General Assembly Geophysical Research Abstracts, Abstract EGU , Vienna, Austria. R., Climate change hampers endangered species through intensified moisturerelated plant stresses (Invited). Abstract H33H-06 presented at 2010 Fall Meeting, AGU, San Francisco, Calif., Dec. Bartholomeus, R.P., Voortman, B., Witte, J.P.M., Climate change effects on vegetation characteristics and groundwater recharge. Abstract H43J-04 presented at 2010 Fall Meeting, AGU, San Francisco, Calif., Dec. R., Climate change hampers endangered species through intensified moisturerelated plant stresses. Latsis 2010 International Symposium on Ecohydrology. Abstract book Latsis 2010, Lausanne, Switserland, pp. 79. Witte, J.P.M., Bartholomeus, R.P. and Cirkel, D.G., Climate change effects on vegetation characteristics and groundwater recharge. Latsis 2010 International Symposium on Ecohydrology. Abstract book Latsis 2010, Lausanne, Switserland, pp. 72. Bartholomeus, R.P. and Witte, J.P.M., Climate change effects on vegetation characteristics and groundwater recharge. Deltas in times of climate change. Abstracts scientific programme deltas in depth. Rotterdam, pp R., Climate change hampers endangered species through intensified moisture-

7 related plant stresses, EGU General Assembly Geophysical Research Abstracts, Abstract EGU , Vienna, Austria. Witte, J.P.M., Bartholomeus, R.P. and Cirkel, D.G., Climate change effects on vegetation characteristics and groundwater recharge, EGU General Assembly Geophysical Research Abstracts, Abstract EGU , Vienna, Austria. Douma, J.C., Witte, J.P.M., Bartholomeus, R.P., Ordonez, J.C., Aerts, R. & van Bodegom, P.M., Using the assembly theory to make habitat distribution models more applicable in a changing climate. 1st Terrabites Symposium, February 9-11, 2010, Hamburg, p.19. R., Critical soil conditions for oxygen availability to plant roots: Improvement of the Feddes-function. Abstract EGU2008-A-00138, EGU General Assembly Geophysical Research Abstracts, Vienna, Austria. Presentations International symposia International Symposium Patterns in Soil-Vegetation-Atmosphere-Systems: Monitoring, Modelling & Data Assimilation. Drought stress and vegetation characteristics on sites with different slopes and orientations. Bonn, Germany, , oral presentation. EGU General Assembly, Contrasting extremes in water-related stresses determine species survival. Vienna, Austria, , poster presentation. EGU General Assembly, Drought stress and vegetation characteristics on sites with different slopes and orientations. Vienna, Austria, , poster presentation. EGU General Assembly, Climate change hampers endangered species by stronger water-related stresses. Vienna, Austria, , poster presentation. AGU Fall Meeting, Climate change effects on vegetation characteristics and groundwater recharge. San Francisco, Calif., , oral presentation. AGU Fall Meeting, Climate change hampers endangered species through intensified moisture-related plant stresses (Invited). San Francisco, Calif., , oral presentation. Latsis 2010 International Symposium on Ecohydrology. Climate change hampers endangered species through intensified moisture-related plant stresses. Lausanne, Switserland, , poster presentation. Deltas in times of climate change, Climate change effects on vegetation characteristics and groundwater recharge. Rotterdam, The Netherlands, , oral presentation. EGU General Assembly, Climate change effects on vegetation characteristics and groundwater recharge. Vienna, Austria, , poster presentation. EGU General Assembly, Climate change hampers endangered species through intensified moisture-related plant stresses. Vienna, Austria, , oral presentation. HydroEco2009, A climate proof relationship between water, oxygen and vegetation. Vienna, Austria, , poster presentation. Roots, an interdisciplinary link, Critical soil conditions for oxygen stress to plant roots: substituting the Feddes-function by a process-based model, Wageningen, The Netherlands, , oral presentation. EGU General Assembly, Critical soil conditions for oxygen stress to plant roots: improvement of the Feddes-function. Vienna, Austria, , oral presentation. Knowledge for Climate, Biodiversity in a changing environment: predicting

8 spatio-temporal dynamics of vegetation. Rotterdam, The Netherlands, , poster presentation. SENSE/EPCEM Climate change and Climate variability, Towards climate proof relationships between oxygen, water and vegetation. Wageningen, The Netherlands, , oral presentation. HydroEco2006, Water-vegetation interactions. Karlovy Vary, Czech Republic, , oral presentation. National symposia Deltaproofweek, Stowa, (Klimaat)robuuste berekening landbouwschade. Amersfoort, , oral presentation, invited. Workshop CARE Baakse Beek, Climate change effects on natural vegetation. Zelhem, , oral presentation, invited. Knooppunt klimaat Klimaatverandering bedreigt plantensoorten door toename droge en natte extremen. Amersfoort, , oral presentation, invited. Bodembreed symposium Climate change threatens endangered plant species by stronger and interacting water-related stresses. Lunteren, , oral presentation. Bodembreed symposium Climate change effects on vegetation characteristics and groundwater recharge. Lunteren, , poster presentation. Bodembreed symposium Climate change threatens endangered plant species by stronger and interacting water-related stresses. Lunteren, , poster presentation. NHV-najaarsbijeenkomst, Op processen gebaseerde relaties tussen water, zuurstof en vegetatie. Leuven, Belgium, , oral presentation, invited. DZH, PWN, Waternet, Kiwa Water Research, Op zoek naar een klimaatbestendige relatie tussen water, zuurstof en vegetatie. Waterlaboratorium Haarlem, The Netherlands, , oral presentation. KWR Symposium, Op zoek naar een klimaatbestendige relatie tussen water, zuurstof en vegetatie. Nieuwegein, The Netherlands, , oral presentation. KU Nijmegen Annual meeting of Dutch restoration ecologists, Water-vegetation interactions, Nijmegen, The Netherlands, , oral presentation. Other presentations International The Open University, Climate change threatens endangered plant species by stronger and interacting water-related stresses. Milton Keynes, United Kingdom, , oral presentation, invited. National Staatsbosbeheer. Klimaatverandering bedreigt planten door toename watergerelateerde stressen. Amsterdam, The Netherlands, , oral presentation. Workshop landbouwschade STOWA, (Klimaat)robuuste berekening van zuurstofstress. Amersfoort, The Netherlands, , oral presentation, invited. Bijeenkomst Projectgroep Waternood STOWA, (Klimaat)robuuste berekening landbouwschade. Amersfoort, The Netherlands, , oral presentation, invited. Bijeenkomst Waterdienst/Deltares, Processen in de wisselwerking tussen bodem, water, plant en atmosfeer. Utrecht, , oral presentation, invited. Alterra, Op zoek naar een klimaatbestendige relatie tussen water, zuurstof en vegetatie. Wageningen, The Netherlands, , oral presentation, invited.

9 Guest lectures Utrecht University, invited speaker, Soil moisture, climate and vegetation. Utrecht, The Netherlands, Wageningen University, invited speaker, Soil moisture, climate and vegetation. Wageningen, The Netherlands, Wageningen University, invited speaker, Soil moisture, climate and vegetation. Wageningen, The Netherlands, Wageningen University, invited speaker, Bodemvocht, klimaat en vegetatie. Wageningen, The Netherlands, Wageningen University, invited speaker, Bodemvocht, klimaat en vegetatie. Wageningen, The Netherlands, Certificates SENSE, Netherlands Research School for the Socio-Economic and Natural Sciences of the Environment , Amsterdam, The Netherlands. Other activities Guest editor for a Special Issue on Groundwater recharge: processes and quantification for Hydrology and Earth System Sciences ( ) Review activities for Ecohydrology, Ecological Engineering, Geologica Belgica, Hydrology and Earth System Sciences, JGR Atmospheres, JGR Biogeosciences, Journal of irrigation and drainage engineering, Vadose Zone Journal Member of the working group 'Actual evaporation' of the Netherlands Hydrological Society (NHV) (2011-onwards) Participation (invited) in the KNAW Academy Colloquium Stomatal conductance through time: towards accurate estimates of physiological CO 2 -forcings of the climate september 2012, Amsterdam, The Netherlands. Member of the jury of the Hydrology Prize for the years 2010 to 2012 of the Netherlands Hydrological Society (2013)