Definitions of key terms and words used used by the CASCADE project and in this website.
The ratio of the present value of benefits to the present value of the costs.
The variety of all life forms - it includes 'genetic diversity', which reflects the diversity within each species; 'species diversity', which is the variety of species; and 'ecosystem diversity', which is the diversity of different communities formed by living organisms and the relations between them. It is sometimes considered at the landscape diversity level.
