1. From: Can We Afford to Conserve Biodiversity?
Figure 1. Funding shortfalls in the global protected area network: (a) Current protected area funding, $6.0 billion annually
From: Can We Afford to Conserve Biodiversity?
BioScience. 2001;51(1): doi: / (2001)051[0043:CWATCB]2.0.CO;2
BioScience | © 2000 American Institute of Biological Sciences

2. From: Can We Afford to Conserve Biodiversity?
Figure 1. Funding shortfalls in the global protected area network: (b) required protected area funding, $27.5 billion annually
From: Can We Afford to Conserve Biodiversity?
BioScience. 2001;51(1): doi: / (2001)051[0043:CWATCB]2.0.CO;2
BioScience | © 2000 American Institute of Biological Sciences

3. From: Can We Afford to Conserve Biodiversity?
Figure 2. Future conversion of natural ecosystems: (a) Global land use, 1993
From: Can We Afford to Conserve Biodiversity?
BioScience. 2001;51(1): doi: / (2001)051[0043:CWATCB]2.0.CO;2
BioScience | © 2000 American Institute of Biological Sciences

4. From: Can We Afford to Conserve Biodiversity?
Figure 2. Future conversion of natural ecosystems: (b) global land use, 2050 (projected)
From: Can We Afford to Conserve Biodiversity?
BioScience. 2001;51(1): doi: / (2001)051[0043:CWATCB]2.0.CO;2
BioScience | © 2000 American Institute of Biological Sciences

5. From: Can We Afford to Conserve Biodiversity?
Table 1. Protected area management categories (IUCN 1994)
From: Can We Afford to Conserve Biodiversity?
BioScience. 2001;51(1): doi: / (2001)051[0043:CWATCB]2.0.CO;2
BioScience | © 2000 American Institute of Biological Sciences

6. From: Can We Afford to Conserve Biodiversity?
Table 2. Annual cost of a globally representative protected area system
From: Can We Afford to Conserve Biodiversity?
BioScience. 2001;51(1): doi: / (2001)051[0043:CWATCB]2.0.CO;2
BioScience | © 2000 American Institute of Biological Sciences