“Changes in the state of nature (quality or quantity), which may result in changes to the capacity of nature to provide social and economic functions. Impacts can be positive or negative. They can be the result of an organisation’s or another party’s actions and can be direct, indirect or cumulative. A single impact driver may be associated with multiple impacts.”
_{Source/reference: TNFD (2023, p. 122).
Note: See also: Natural Capital Protocol definition of a natural capital impact as a “negative or positive effect of business activity on natural capital” (Natural Capital Coalition, 2016, pp. 16-17).}

“Impact drivers are measurable quantities of a natural resource that are used as an input to production and measurable non-product outputs of a business activity that affects nature.” “A measurable quantity of a natural resource that is used as a natural input to production (e.g. the volume of sand and gravel used in construction) or a measurable non-product output of a business activity (e.g. a kilogram of NOx emissions released into the atmosphere by a manufacturing facility).” An impact driver is “a measurable quantity of a natural resource that is used as an input to production (e.g., volume of sand and gravel used in construction) or a measurable non-product output of business activity (e.g., a kilogram of NOx emissions released into the atmosphere by a manufacturing facility).”
_{Source/reference: TNFD (2023, p. 30). TNFD (2023, p. 121). Natural Capital Coalition (2016, p. 44).
Note: users may wish to extend this definition to include product outputs, as in principle, product outputs can also drive impacts.}

“intermediate services are those ecosystem services in which the user of the ecosystem services is an ecosystem asset and where there is a connection to the supply of final ecosystem services”
_{Source/reference: SEEA-EA 2021, para. 6.26.}