Value and Maintenance of Biodiversity Biology/Env S 204 Spring 2009 Value and Maintenance Benefits to humans, direct or indirect Intrinsic value What kind of a world do we want to live in? Redundancy in ecosystems (how much is enough?) Benefits to humans
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Biology/Env S 204
If 6 billion people consume 40% of the annual net primary productivity, what is the theoretical limit (= carrying capacity) for humans under current conditions?
2.5 x 6 billion = 15 billion
But this number does not factor in the costs of dealing with wastes or non-renewable resources.
Nor does it leave room for other biodiversity, upon which we depend for ecosystem services (such as waste removal/recycling).
Human population is expected to reach ca. 12 billion by 2050.
Two opposing views: rivet hypothesis vs. redundancy hypothesis