The recreational value or potential of natural resources is closely associated with the quality of the resource, therefore as with other elements such as existence values, impacts to the ecological, heritage or assimilative capacity of the resource will also have implications for recreational use. Recreation itself often places competing demands upon resources, in particular on the need for management of natural and heritage resources. Recreational activities such as walking, orienteering and mountain biking can disturb natural habitats for example (see Section 4.3.1 for a discussion of the effects of trampling). Therefore recreational elements of the natural capital stock are both constrained by the quality and extent of the resource, while also exerting pressures upon those resources. The ongoing sustainability of resources which attract or promote recreational use will depend on sensitive management to balance these differing demands of recreational users with ecological and conservation priorities.