they provide us with. In a speech referring to a report to government which suggested that better protection of the UK's freshwater ecosystems would yield an enhancement in aesthetic value of £700m, he derided attempts 'to compare things which cannot be directly compared'. He went on to say: Others have defended efforts to integrate the valuation of natural capital into local and national economic decision-making, arguing that it puts the environment on a more balanced footing when weighed against other commercial pressures, and that 'valuation' of those assets is not the same as monetisation. See also Bioeconomics (biophysical) Biocapacity Conservation biology Earth Economics (organization) Ecodynamics Ecological deficit Ecological economics Ecological footprint Ecology Econophysics Ecosystem services Energy accounting Environmental degradation Environmental economics Environmental protection Habitat conservation Natural capital accounting Natural Capital Committee Natural Capital Initiative Oil depletion Payment for ecosystem services Population dynamics Renewable resource Sustainability Sustainable development The Economics of Ecosystems and Biodiversity Thermoeconomics References Notes Further reading Pearce, D. 1993. Blueprint 3: Measuring Sustainable Development. Earthscan. Jansson, AnnMari; et al. (1994). Investing in Natural Capital : The Ecological Economics Approach to Sustainability. Washington, D.C.: Island Press, 504 pp. . Daily, Gretchen C. (editor) (1997). Nature's Services: Societal Dependence on Natural Ecosystems. Washington, D.C.: Island Press, 392 pp. . Prugh, Thomas; Robert Costanza et al. (1999). Natural capital and human economic survival. Solomons, Md.: International Society for Ecological Economics, 180 pp. . Helm, Dieter (2015). Natural Capital – Valuing Our Planet. Yale University Press; 277 pp. External links Costanza, Robert (Lead Author); Cutler J. Cleveland (Topic Editor). 2008. "Natural capital." In: Encyclopedia of Earth. Eds. Cutler J. Cleveland (Washington, D.C.: Environmental Information Coalition, National Council for Science and the Environment). First published in the Encyclopedia of Earth February 26, 2007; Last revised July 31, 2008; Retrieved September 5, 2008. Earth Economics Natural Capital Accounting Solutions Article Natural Capital Project. A joint venture among The Woods Institute for the Environment at Stanford University, The Nature Conservancy, World Wildlife Fund. NOAA Economics US Economic Benefits of Natural Systems to Business and Society. Ecosystem Valuation Toolkit Lacombe Morgane and Aronson James, 2009. Restoring Natural Capital in Arid and Semiarid Regions Combining Ecosystem Health with Human Wellbeing . Les dossiers thématiques du CSFD. N° 7. Earth Economics http://unstats.un.org/unsd/envaccounting/seea.asp System of Environmental-Economic Accounting (SEEA) http://www.naturalcapitalcoalition.com http://naturalcapitalforum.com in 2015 https://www.natur-ist-unser-kapital.de/ Case studies and examples to attribute economic values to ecosystems and their services (German website) http://teebweb.org