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. 2005 Feb 28;360(1454):229–241. doi: 10.1098/rstb.2004.1603

Figure 5.

Figure 5

Net services provided by a habitat at different levels of conversion. Four different scenarios are presented, in each the services provided by the natural habitat are presented as a (downward sloping) solid line, the new services provided by the modified habitat are depicted by upward sloping dotted lines. The net services are illustrated by the uppermost, broken line. Scenarios (a) and (b) illustrate the case for resilient services (p=0.8) that are undertaken by species at low trophic levels. Scenarios (c) and (d) are for brittle and less resilient services (p=0.2) undertaken by species at higher trophic levels. In (a) and (c) the services in the modified area of habitat are only weakly dependent upon services in the pristine habitat (d=0.1). In (b) and (d) the services in the modified habitat are strongly dependent upon services provided by the remaining pristine habitat.