found: Work cat.: McAlpine, K.G. Conservation and the delivery of ecosystem services, c2009:abstr. (Ecosystem services are the benefits people obtain from ecosystems, such as clean air, fresh water, and the pollination of crops)
found: Wikipedia, Aug. 27, 2009(Ecosystem services. Mankind benefits from a multitude of resources and processes that are supplied by natural ecosystems. Collectively, these benefits are known as ecosystem services and include products like clean drinking water and processes such as the decomposition of wastes.)
found: A dictionary of biology, 2008(ecosystem services: The benefits that people receive from ecosystems; a means of assessing the economic value of particular ecological benefits and the cost of their destruction)
found: Encyc. of environmental biology, c1995:v. 3, p. 235 (Ecosystem services: Valuable functions ecosystems provide free of charge to human societies, including maintenance of atmospheric gases; regulation of the hydrologic cycle; provision of potable water, fertile soil, wood, fish, and other consumable products; processing of wastes; pollination of crops; and a genetic library from which people have domesticated crops and are now designing new foodstuffs)
found: Ecosystem services, via U.S. Forest Service website, Aug. 27, 2009(Forests provide a full suite of goods and services that are vital to human health and livelihood, natural assets we call ecosystem services. Many of these goods and services are traditionally viewed as free benefits to society, or "public goods" - wildlife habitat and diversity, watershed services, carbon storage, and scenic landscapes, for example.)