Source: J0rgensen (2000b). 1Coffaro et al. (1997).

2Marques et al. (1997); Fonseca et al. (2000).

1969 1990 1991 1992 1993 1994 1995 1996 1997 1998 time (year)

Figure 9.8 Specific eco-exergy mean annual values: present scenario (continuous line), removal of Ulva, optimal strategy from cost-benefit point of view (dotted line), and nutrients load reduction from watershed (dashed line). Reprinted with permission.*

*Copyright © 2005 Handbook of Ecological Indicators for Assessment of Ecosystem Health, edited by S.E. Jorgensen, F-L Xu, R. Costanza, from chapter by J.M. Zaldivar et al. Two figures reproduced by permission of Taylor & Francis, a division of Informa plc.

Was this article helpful?

0 0
Getting Started With Solar

Getting Started With Solar

Do we really want the one thing that gives us its resources unconditionally to suffer even more than it is suffering now? Nature, is a part of our being from the earliest human days. We respect Nature and it gives us its bounty, but in the recent past greedy money hungry corporations have made us all so destructive, so wasteful.

Get My Free Ebook

Post a comment