The natural capital concept is generating broad interest that extends well beyond economists. Economics has a long history of applying capital theory to natural resources. However, measurement of the value of ecosystems has mostly focused on income flows rather than valuing stocks of natural...

Urban ecologists have extended the bounds of this field to incorporate both the effects of human activities on ecological processes (e.g., humans as generators of disturbances), and the ways in which the structures, functions, and processes of urban ecosystems, and human alterations to them, in...