I've seen that map many times and often wondered how it was made. It seems to have been created in the mid 90's by Dr. Michael S. Coffman, the president of Environmental Perspectives, Inc.
Dr. Coffman is a prolific writer and speaker. He's often be found at 'Liberty' conferences and events sponsered by the John Birch Society and the Tea party. Full bio... Dr. Michael S. Coffman
The maps themselves can be found at the Environmental Perspectives, Inc. web store where a whole array of informative books, maps and pamphlets can be downloaded for free or for a price. (They even accept the Discover card)
According to the fine print on the map, it was used to stop the ratification of the Convention on Biological Diversity. That event took place in 1994, so that should give an approximate date to its creation.
I found one link that credits Dr. Michael S. Coffman as having prepared the maps and sources the data as coming from various UN studies and treaties.
The United Nations Convention on Biological Diversity, Article 8a-e; United Nations Global Biodiversity Assessment, Section 22.214.171.124.3
“The Wildlands Project,” WildEarth, 1992
Science, “The High Cost of Biodiversity,” 25 June, 1993, pp 1968-1871
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