34 bio 3115 universit dottawa university of ottawa

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Unformatted text preview: s Psychology M1.34 Bio 3115 Université d’Ottawa/ University of Ottawa 2012 M1 2009-2010 BIO 3115 Conservation Biology Some characteristics of conservation biology as a discipline Conserving biodiversity implies that biodiversity is valued, for one or another reason. The science of conservation biology is, therefore, concerned with how such values might be maintained, not why they should be maintained. M1.35 2014 Since our understanding of natural ecosystems, and human impacts upon them, is incomplete, our ability to make accurate predictions is low, and uncertainty is high. However, this uncertainty should not prevent us from taking action! Lower uncertainty Predicted Observed Some characteristics of conservation biology as a discipline Observed Bio 3115 Université d’Ottawa/ University of Ottawa Knowledge Higher uncertainty Predicted M1.36 Bio 3115 Université d’Ottawa/ University of Ottawa 2014 M1 2009-2010 “Crisis” means the consequences of non-action are often worse than the consequences of action based on incomplete information. E.g. for a declining population, it is much more likely that the population will go extinct in 10 years if no action is taken versus action founded on incomplete knowledge. Action? Time Probability The dilemmas of conservation biology I: The Nero dilemma Population size BIO 3115 Conservation Biology No action Action Population size in 10 years M1.37 Bio 3115 Université d’Ottawa/ University of Ottawa 2014 The dilemmas of conservation biology II: The bottom line dilemma Because our knowledge of ecosystem behaviour, and human impacts thereon, is incomplete, it is usually impossible to specify a “bottom line”. E.g. how large must a protected area be to ensure that its present biodiversity is preserved? M1.38 Bio 3115 Université d’Ottawa/ University of Ottawa 2014 M1 2009-2010 The dilemmas of conservation biology III: The tragedy of the commons dilemma Individual value BIO 3115 Conservation Biology Biodiversity is a common resource which can be exploited by individuals......
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