2 Renewable A resource is renewable if: It can be replenished by natural processes at a rate equal to, or faster than, its rate of consumptionOne must consider if:Energy resources are renewable?Agricultural resources are renewable?Water resources are renewable?
3 SustainabilitySustainability is a much more difficult term to define and has many connotations1987 Brundtland Commission* defined sustainability…“to meet the needs of the present without compromising the ability of future generations to meet their own needs.”*United Nations "Report of the World Commission on Environment and Development." General Assembly Resolution 42/187, 11 December 1987.
4 Sustainability Sustainable development Sustainable agriculture The 1987 Brundtland definition is often adapted for a variety of purposesSustainable developmentSustainable agricultureSustainable communitiesSustainable energy
5 Three Pillars of Sustainability SocialBearableEquitableSustainableEconomicEcologicalViableThe three pillars of sustainability are social, Ecological and economic.
6 Ecological Pillar Management of human consumption EnergyWaterFoodMaterials and wasteEnvironmental managementAir/atmosphereWater (freshwater & oceans)Land use
7 Economic PillarAddress decoupling of environmental degradation and economic growth(avoid growth that depletes ecosystem services)Account for value of ecosystem servicesRecognize economic opportunity while integrating with ecological and social concerns
8 Social PillarEnable peace, security and social justice to decrease poverty, to allow for equitable resource allocation and to promote human rights and gender equalitySupport human settlements to create self- reliant communities
9 Three Pillars of Sustainability EarthLifeEnvironmentSocialSustainableEconomicEcologicalSustainability requires a holistic approach
10 SustainabilityQ: Must something be renewable to be considered “sustainable?” A: YES, if a resource is renewable, if it can be replenished at a rate equal to or greater than it is being used, then it is sustainable! Q: Must something be sustainable to be considered “renewable?” A: NO, renewable resources can be exploited, resulting in environmental degradation Q: Are all renewable resources sustainable? A: NO, for example: A large hydro dam may provide renewable power, but it might drastically alter the environment and displace human populations
11 Renewable and Sustainable Resources Photos by B. Ballard
12 Renewable and Often Sustainable Photos by P. Hofmeyer
13 Renewable and Rarely Sustainable Irrigated & fertilized corn field [Source: Wikimedia Commons, accessed 7/18/2013]Large Hydro: Hoover Dam [Source: Wikimedia Commons, accessed 7/18/2013]
14 Non-renewable and Not Sustainable Slash-and-burn [Source: Wikimedia Commons, accessed 7/18/2013]Coal extraction [Source: Wikimedia Commons, accessed 7/18/2013]
15 SustainabilityAre humans living sustainably? In order to be sustainable, the Earth’s resources must first replenish themselves equal to our consumption rate
17 Sustainability: What can you do? Two areas in which to improve the sustainability of your lifestyle:Transportation: Reduce/eliminate fossil fuel useDiet: Eat food produced locally
18 Sustainable Food Consumption The mean distance for fruits and vegetables to get onto my dinner plate is 1,494 milesThis is not including imported fruits and vegetables like pineapples, artichokes, kiwis, mangoes, and so on.Source: Leopold Center report “Food, Fuel, and Freeways: An Iowa perspective on how far food travels, fuel usage, and greenhouse gas emissions”, June 2001.
19 Buy local, eat local, plant a garden and support a local farmer Photos by B. Ballard