Department Environmental Social Sciences

Environmental Economics (EnvEco)


Dr. Ivana LogarGroup Leader, Cluster: EnvEcoTel. +41 58 765 5504Send Mail

The research group in Environmental Economics (EnvEco) studies the interactions between economic activities and the water environment by applying various economic methods and tools, such as cost-benefit analysis and hydro-economic models. The cluster uses economic principles and approaches with the aim of supporting the sustainable management of water resources. The main research focus of the group is on the economic modeling and valuation of ecosystem services provided by water resources, the assessment of the social welfare changes associated with water use and allocation, both in terms of quantity and quality, and payments for water services.

Economic activities depend upon the availability of water resources, including their quality, and affect the water environment at the same time through water extraction and the emission of pollutants. Many aquatic ecosystem goods and services are used either directly for consumption or serve as inputs in economic production processes. Consumption and production activities lead to environmental pollution and degradation. Due to the public nature of many of the ecosystem goods and services provided by aquatic systems, their costs and benefits are typically not accounted for in existing markets and product prices. This can have serious implications for decision-making towards their sustainable use and management. Economic valuation methods, in particular revealed and stated preference techniques, are applied to estimate the non-market value of the public goods and services provided by water resources. These estimates are integrated into decision-making frameworks such as cost-benefit analysis to ensure optimal water resource use and allocation and support the design of effective policy instruments.

The work of EnvEco relies strongly on interdisciplinary research. The group collaborates closely with scientists from different disciplines at Eawag, including urban water engineers, ecologists, ecotoxicologists, and other natural scientists.

Current research projects

A principal objective of the project is to develop a novel theoretical framework that would explain the sources of preference uncertainty in stated choice experiments.
This project aims at providing a better insight into the public preferences of the Swiss population for the suggested hydropower expansion.
This project aims at closing the knowledge gap on monetary benefits of river rehabilitation by assessing the economic values of improvements in river ecosystem services resulting from river rehabilitation.
The main objective of this project is to show how economic values of different ecosystem services provided by water resources are spatially distributed across Switzerland.
The project responds to current research gaps on the integration of forest, eco-hydrology and economic sciences to improve decision-making process.

Completed research projects

The main objective of this research is to conduct a cost-benefit analysis of water quality improvement through upgrading of wastewater treatment plants in Switzerland.
The main objective is to conduct a cost-effectiveness analysis of a number of different measures for reducing chemical water pollution in the Mönchaltorfer Aa river basin in the Canton of Zurich.
Social-ecological networks allow for the joint modeling of ecological interdependencies and governance structure.
The goal of this research is to assess the value of different environmental amenities, as well as structural house and neighbourhood characteristics.


Dr. Ivana LogarGroup Leader, Cluster: EnvEcoTel. +41 58 765 5504Send Mail
Prof. Dr. Roy BrouwerTel. +41 58 765 5504Send Mail
Markus GlattPhD Student, Cluster: EnvEcoTel. +41 58 765 5492Send Mail
Dr. Paola Ovando PolPostdoc, Cluster: EnvEcoTel. +41 58 765 5237Send Mail



  • Logar, I., Brouwer, R. (2018). Substitution effects and spatial preference heterogeneity in single- and multiple-site choice experiments. Land Economics, 94(2): 302-322


Logar, I.; Brouwer, R. (2017) The effect of risk communication on choice behavior, welfare estimates and choice certainty, Water Resources and Economics, 18, 34-50, doi:10.1016/j.wre.2016.11.004, Institutional Repository
Brouwer, R.; Logar, I.; Sheremet, O. (2017) Choice consistency and preference stability in test-retests of discrete choice experiment and open-ended willingness to pay elicitation formats, Environmental and Resource Economics, 68(3), 729-751, doi:10.1007/s10640-016-0045-z, Institutional Repository
Ovando, P.; Caparrós, A.; Diaz-Balteiro, L.; Pasalodos, M.; Beguería, S.; Oviedo, J. L.; Montero, G.; Campos, P. (2017) Spatial valuation of forests’ environmental assets: an application to Andalusian silvopastoral farms, Land Economics, 93(1), 87-108, doi:10.3368/le.93.1.87, Institutional Repository
Tilley, E.; Logar, I.; Günther, I. (2017) The effect of giving respondents time to think in a choice experiment: a conditional cash transfer programme in South Africa, Environment and Development Economics, 22(2), 202-227, doi:10.1017/S1355770X16000280, Institutional Repository
van Dijk, D.; Hendrix, E. M. T.; Haijema, R.; Groeneveld, R. A.; van Ierland, E. C. (2017) An Adjustment Restriction on fish Quota: resource rents, overcapacity and recovery of fish stock, Environmental and Resource Economics, 67(2), 203-230, doi:10.1007/s10640-015-9983-0, Institutional Repository
Campos, P.; Caparrós, A.; Cerdá, E.; Díaz-Balteiro, L.; Herruzo, A. C.; Huntsinger, L.; Martín-Barroso, D.; Martínez-Jauregui, M.; Ovando, P.; Oviedo, J. L.; Pasalodos-Tato, M.; Romero, C.; Soliño, M.; Standiford, R. B. (2017) Multifunctional natural forest silviculture economics revised: challenges in meeting landowners’ and society's wants: a review, Forest Systems, 26(2), eR01S (15 pp.), doi:10.5424/fs/2017262-10505, Institutional Repository
  • Valatin G, et al. 2017. PESFOR-W: Improving the design and environmental effectiveness of woodlands for water Payments for Ecosystem Services. Research Ideas and Outcomes 3: e13828 (30 May 2017).

  • Ovando, P. 2017. Servicios ambientales en los tiempos de la bioeconomía forestal. Retos y Oportunidades en el monte mediterráneo. Cuadernos Sociedad Española de Ciencias Forestales, 43. 1-18.


Mattmann, M.; Logar, I.; Brouwer, R. (2016) Hydropower externalities: a meta-analysis, Energy Economics, 57, 66-77, doi:10.1016/j.eneco.2016.04.016, Institutional Repository
van Dijk, D.; Siber, R.; Brouwer, R.; Logar, I.; Sanadgol, D. (2016) Valuing water resources in Switzerland using a hedonic price model, Water Resources Research, 52(5), 3510-3526, doi:10.1002/2015WR017534, Institutional Repository
Mattmann, M.; Logar, I.; Brouwer, R. (2016) Wind power externalities: a meta-analysis, Ecological Economics, 127, 23-36, doi:10.1016/j.ecolecon.2016.04.005, Institutional Repository
Van Dijk, D.; Hendrix, E. M. T. (2016) Pipe replacement in a water supply network: coordinated versus uncoordinated replacement and budget effects, Informatica, 27(2), 387-403, doi:10.15388/Informatica.2016.91, Institutional Repository
Brouwer, R.; Brouwer, S.; Eleveld, M. A.; Verbraak, M.; Wagtendonk, A. J.; van der Woerd, H. J. (2016) Public willingness to pay for alternative management regimes of remote marine protected areas in the North Sea, Marine Policy, 68, 195-204, doi:10.1016/j.marpol.2016.03.001, Institutional Repository
Tesfaye, A.; Brouwer, R. (2016) Exploring the scope for transboundary collaboration in the Blue Nile river basin: downstream willingness to pay for upstream land use changes to improve irrigation water supply, Environment and Development Economics, 21(2), 180-204, doi:10.1017/S1355770X15000182, Institutional Repository
  • Brouwer, R. et al. (2016). Valuation and transferability of the non-market benefits of river restoration in the international Danube river basin using a choice experiment. Ecological Engineering, 87: 20-29.  doi:10.1016/j.ecoleng.2015.11.018
  • Levin-Koopman, J., Kuik, O., Tol, R. and Brouwer, R. (2016). The effectiveness of water markets to allocate water between industry, agriculture and public water utilities as an adaptation mechanism to climate change. Mitigation and Adaptation Strategies for Global Change, doi: 10.1007/s11027-015-9662-z
  • Lizin, S., Brouwer, R., Liekens, I., Broekx, S. (2016). Accounting for substitution and spatial heterogeneity in a labeled choice experiment. Journal of Environmental Management, 181: 289-97. doi: 10.1016/j.jenvman.2016.06.038
  • Pinto, R., Brouwer, R. et al. (2016). Valuing the non-market benefits of estuarine ecosystem services in a river basin context: testing sensitivity to scope and scale. Estuarine, Coastal and Shelf Science, 169: 95-105. doi:10.1016/j.ecss.2015.11.028
  • Tesfaye, A., Brouwer, R., van der Zaag, P. and Negatu, W. (2016). Assessing the costs and benefits of improved land management practices in three watershed areas in Ethiopia. International Soil and Water Conservation Research, 4: 20-29.
  • Tesfaye, A., Wolanios, N. and Brouwer, R. (2016). Estimation of the economic value of the ecosystem services provided by the Blue Nile Basin in Ethiopia. Ecosystem Services, 17: 268-277. doi:10.1016/j.ecoser.2015.10.008


Brouwer, R.; Job, F. C.; van der Kroon, B.; Johnston, R. (2015) Comparing willingness to pay for improved drinking-water quality using stated preference methods in rural and urban Kenya, Applied Health Economics and Health Policy, 13(1), 81-94, doi:10.1007/s40258-014-0137-2, Institutional Repository
Gsottbauer, E.; Logar, I.; van den Bergh, J. (2015) Towards a fair, constructive and consistent criticism of all valuation languages: comment on Kallis et al. (2013), Ecological Economics, 112, 164-169, doi:10.1016/j.ecolecon.2014.12.014, Institutional Repository
Brouwer, R.; Martin-Ortega, J.; Dekker, T.; Sardonini, L.; Andreu, J.; Kontogianni, A.; Skourtos, M.; Raggi, M.; Viaggi, D.; Pulido-Velazquez, M.; Rolfe, J.; Windle, J. (2015) Improving value transfer through socio-economic adjustments in a multicountry choice experiment of water conservation alternatives, Australian Journal of Agricultural and Resource Economics, 59(3), 458-478, doi:10.1111/1467-8489.12099, Institutional Repository
Kahsay, T. N.; Kuik, O.; Brouwer, R.; van der Zaag, P. (2015) Estimation of the transboundary economic impacts of the Grand Ethiopia Renaissance Dam: a computable general equilibrium analysis, Water Resources and Economics, 10, 14-30, doi:10.1016/j.wre.2015.02.003, Institutional Repository
Klinglmair, A.; Bliem, M. G.; Brouwer, R. (2015) Exploring the public value of increased hydropower use: a choice experiment study for Austria, Journal of Environmental Economics and Policy, 4(3), 315-336, doi:10.1080/21606544.2015.1018956, Institutional Repository
Koopman, J. F. L.; Kuik, O.; Tol, R. S. J.; Brouwer, R. (2015) Water scarcity from climate change and adaption response in an international river basin context, Climate Change Economics, 6(1), 1-22, doi:10.1142/S2010007815500049, Institutional Repository
Koopman, J. F. L.; Kuik, O.; Tol, R. S. J.; Brouwer, R. (2017) The potential of water markets to allocate water between industry, agriculture and public water utilities as an adaptation mechanism to climate change, Mitigation and Adaptation Strategies for Global Change, 22(2), 325-347, doi:10.1007/s11027-015-9662-z, Institutional Repository
Tesfaye, A.; Brouwer, R. (2016) Exploring the scope for transboundary collaboration in the Blue Nile river basin: downstream willingness to pay for upstream land use changes to improve irrigation water supply, Environment and Development Economics, 21(2), 180-204, doi:10.1017/S1355770X15000182, Institutional Repository
Vermaat, J. E.; Wagtendonk, A. J.; Brouwer, R.; Sheremet, O.; Ansink, E.; Brockhoff, T.; Plug, M.; Hellsten, S.; Aroviita, J.; Tylec, L.; Giełczewski, M.; Kohut, L.; Brabec, K.; Haverkamp, J.; Poppe, M.; Böck, K.; Coerssen, M.; Segersten, J.; Hering, D. (2015) Assessing the societal benefits of river restoration using the ecosystem services approach, Hydrobiologia, 769(1), 121-135, doi:10.1007/s10750-015-2482-z, Institutional Repository
  • Koetse, M., Brouwer, R. Reference dependence effects on WTA and WTP value functions and their disparity. Environmental and Resource Economics, doi:10.1007/s10640-015-9920-2
  • Tesfaye, A., Wolanios, N. and Brouwer, R. (2015). Estimation of the economic value of the ecosystem services provided by the Blue Nile Basin in Ethiopia. Ecosystem Services, in press.


Logar, I.; Brouwer, R.; Maurer, M.; Ort, C. (2014) Cost-benefit analysis of the Swiss national policy on reducing micropollutants in treated wastewater, Environmental Science and Technology, 48(21), 12500-12508, doi:10.1021/es502338j, Institutional Repository
Logar, I.; van den Bergh, J. C. J. M. (2014) Economic valuation of preventing beach erosion: comparing existing and non-existing beach markets with stated and revealed preferences, Journal of Environmental Economics and Policy, 3(1), 46-66, doi:10.1080/21606544.2013.863742, Institutional Repository
Brouwer, R.; Tinh, B. D.; Tuan, T. H.; Magnussen, K.; Navrud, S. (2014) Modeling demand for catastrophic flood risk insurance in coastal zones in Vietnam using choice experiments, Environment and Development Economics, 19(2), 228-249, doi:10.1017/S1355770X13000405, Institutional Repository
Khan, N. I.; Brouwer, R.; Yang, H. (2014) Household's willingness to pay for arsenic safe drinking water in Bangladesh, Journal of Environmental Management, 143, 151-161, doi:10.1016/j.jenvman.2014.04.018, Institutional Repository
Alcon, F.; Tapsuwand, S.; Brouwer, R.; de Miguel, M. D., (2014) Adoption of irrigation water policies to guarantee water supply: a choice experiment, Environmental Science and Policy, 44, 226-236, doi:10.1016/j.envsci.2014.08.012, Institutional Repository
van Dijk, D.; Hendrix, E. M. T.; Haijema, R.; Groeneveld, R. A.; van Ierland, E. C. (2014) On solving a bi-level stochastic dynamic programming model for analyzing fisheries policies: fishermen behavior and optimal fish quota, Ecological Modelling, 272, 68-75, doi:10.1016/j.ecolmodel.2013.09.015, Institutional Repository


Logar, I.; van den Bergh, J. C. J. M. (2013) Methods to assess costs of drought damages and policies for drought mitigation and adaptation: review and recommendations, Water Resources Management, 27(6), 1707-1720, doi:10.1007/s11269-012-0119-9, Institutional Repository
Meyer, V.; Schwarze, R.; Becker, N.; Markantonis, V.; van den Bergh, J. C. J. M.; Bouwer, L. M.; Bubeck, P.; Ciavola, P.; Genovese, E.; Green, C.; Hallegatte, S.; Kreibich, H.; Lequeux, Q.; Logar, I.; Papyrakis, E.; Pfurtscheller, C.; Poussin, J.; Przyluski, V.; Thieken, A. H.; Viavattene, C. (2014) Assessing the costs of natural hazards – state of the art and the way forward, In: Quevauviller, P. (Eds.), Hydrometeorological hazards: interfacing science and policy, 225-290, doi:10.1002/9781118629567.ch4a, Institutional Repository