Biological diversity is the wealth of life on earth

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Unformatted text preview: t is biodiversity? “Biological diversity is the wealth of life on earth, the millions of plants, animals, and microorganisms, the genes they contain, and the intricate ecosystems they help to build into the living environment.” (WWF 1989) M1.17 Bio 3115 Université d’Ottawa / University of Ottawa 2014 Biodiversity: the unknowns M1.18 Bio 3115 Université d’Ottawa / University of Ottawa 2014 M1 2009-2010 BIO 3115 Conservation Biology Global population growth M1.19 Bio 3115 Université d’Ottawa / University of Ottawa 2014 Global human population: UN projections M1.20 Bio 3115 Université d’Ottawa / University of Ottawa 2014 M1 2009-2010 BIO 3115 Conservation Biology Are humans overabundant? • Large animals are Log abundance rare, and the relationship between abundance and body size allows us to predict what H. sapiens abundance ought to be. Log10 body mass (kg) M1.21 Bio 3115 Université d’Ottawa / University of Ottawa 2014 Log density/ha Are humans overabundant? • 20 times more • Log10 body mass (kg) abundant than species of similar size… … and 1200 times more abundant than species of similar size corrected for energy consumption. M1.22 Bio 3115 Université d’Ottawa / University of Ottawa M1 2009-2010 BIO 3115 Conservation Biology The human ‘ecological footprint’ The number of hectares of land required to support a single person … EF increases with per capita resource/energy use. M1.23 Bio 3115 Université d’Ottawa/ University of Ottawa 2014 Bio 3115 Université d’Ottawa / University of Ottawa M1 2009-2010 BIO 3115 Conservation Biology The human ‘ecological footprint’ M1.25 Bio 3115 Université d’Ottawa / University of Ottawa 2014 The biology of scarcity M1.26 Bio 3115 Université d’Ottawa / University of Ottawa 2014 M1 2009-2010 BIO 3115 Conservation Biology Conservation biology, values, and environmental ethics Conservation biology responsibilities The aims (objectives) of conservation biology The dilemmas of conservation biology Value and va...
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