Value of Biodiversity“Scientists know we must protect species because they are working parts of our life-support system.” - Paul Ehrlich ,Stanford University“Biodiversity is the greatest treasure we have... Its diminishment is to be prevented atall cost.” - Thomas Eisner ,Cornell University"We consider species to be like a brick in the foundation of a building. You can probablylose one or two or a dozen bricks and still have a standing house. But by the time youvelost 20 per cent of species, youre going to destabilize the entire structure. Thats theway ecosystems work." - Donald Falk ,University of Arizona“For if one link in natures chain might be lost, another might be lost, until the whole ofthings will vanish by piecemeal."-Thomas JeffersonThe economic impact of soil erosion in Canada is estimated to be between $484 and$707 million per year.- Agriculture Canada, 1994
Value of Biodiversity Charles, Prince of Wales, 33rd Richard Dimbleby Lecture, July 2009“The true wealth of all nations comes from clean rivers, healthy soil and, mostimportantly of all, a rich biodiversity of life ”We are "at an historic moment - because we face a future where there is a realprospect that if we fail the Earth, we fail humanity. To avoid such an outcome,which will comprehensively destroy our childrens future, we must urgentlyconfront and then make choices which carry monumental implications.”"We are standing at a moment of substantial transition where we face the dualchallenges of a world view and an economic system that seem to have enormousshortcomings, together with an environmental crisis - including that of climatechange - which threatens to engulf us all.”"We must remember that the ultimate source of all economic capital is Naturescapital.”
Value of Biodiversity• Stability• Enhances Ecosystem Services Water quality enhancement, soil conservation, carbon sequestration, climate moderation, etc.• Economic Benefits• Societal Benefits• Preservation for its own Sake?
Many different values ascribed, but probably the most important is stability. While defined ecologically, stability is important for an environment to be ecologically sustainable.
Major Threats to Biodiversity1. Land (or water) use Alteration2. Over Exploitation of Resources3. Invasive Species4. Climate Change5. Pollution
25 Global Biodiversity “Hotspots”“Conservationists are far from able to assist all species underthreat, if only for lack of funding. This places a premium onpriorities: how can we support the most species at the leastcost? One way is to identify biodiversity hotspots whereexceptional concentrations of endemic species are undergoingexceptional loss of habitat. As many as 44% of all species ofvascular plants and 35% of all species in four vertebrate groupsare confined to 25 hotspots comprising only 1.4% of the landsurface of the Earth. This opens the way for a silver bulletstrategy on the part of conservation planners, focusing onthese hotspots in proportion to their share of the worldsspecies at risk.” - Myers et al. (2000) Biodiversity Hotspots for Conservation Priorities: Nature 403, 853-858
25 Global Biodiversity “Hotspots” “Hotspots”For an interesting, interactive map describing each of these “hotspots”, visit http://www.biodiversityhotspots.org/Pages/default.aspx
AssignmentREAD : Draft Strategy for the Celebration of the United Nations Decade On Biodiversity (UNDB) 2011-2020Answer the following questions : What do you understand by the term biodiversity ? Write a note on the Biodiversity of Canada . How is biodiversity integral or related to the concept of sustainable development ?