Sustainable Use and Depletion of Natural Resources: a Conceptual Framework Stephen R. Humphrey - University of Florida.

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Presentation transcript:

Sustainable Use and Depletion of Natural Resources: a Conceptual Framework Stephen R. Humphrey - University of Florida

What is an exhaustible natural resource? All non-renewable resources are exhaustible Amount of stock is usually uncertain or unknowable Depleted when used, but the depletion rate can be managed All non-renewable resources are exhaustible Amount of stock is usually uncertain or unknowable Depleted when used, but the depletion rate can be managed

What’s an inexhaustible natural resource? Renewable resources can be used sustainably But only physical-force RRs are truly inexhaustible Biological-force RRs can be used sustainably or unsustainably Renewable resources can be used sustainably But only physical-force RRs are truly inexhaustible Biological-force RRs can be used sustainably or unsustainably

Key insight: don’t confuse stock and flow The supply in “supply and demand” is not a resource stock! Supply is flow, or periodic production from stock Stock is the resource that may be used sustainably or exhausted The supply in “supply and demand” is not a resource stock! Supply is flow, or periodic production from stock Stock is the resource that may be used sustainably or exhausted Stock Flow

Simple Model 1: sustainable use of a renewable resource It’s crucial to visualize how biophysical & human behavior integrate. Roughly 1-5% harvest is the most biological systems can sustain. And price is dependable, like a utility, if… Stock is renewed indefinitely, if… If flow is constrained so as to not draw down stock

Corn: sustainable use, disruptive tech Applies to non-renewable and renewable resources Mass selection Mendelian hybrid trait selection

General Model 2: non-renewable resource with high demand and no substitute Stock is steadily depleted, flow rises-peaks-drops, and price drops-bottoms-rises; use seems sustainable temporarily Technological Innovation Phase Utility Phase Depletion or Exhaustion Phase In this zone, use looks sustainable, but isn’t

Price phases of the resource development-depletion model for oil First half of U-shaped price curve, calmed by elastic flow. When flow becomes inelastic, depletion will bring severe economic disruption. Innovation phase (Moore’s law, cheap revolution) Utility phase Event I: US oil production peaked; Arab oil embargo, Iranian revolution, Iran-Iraq War, stagflation Event II: Demand growth at supply plateau; price rises, then demand drops Competition, combination, monopoly, anti-trust, depression, WW I, WW II, import tariffs & quotas, export controls, price controls, cartel, nationalization

When will world oil production peak? National Petroleum Council 2007: “Facing hard truths” BP Statistical Review data: world oil production peaked in 2008 Dr. Sadad Al-Husseini (former Saudi Oil Minister) capacity outlook: 10-year production plateau Association for the Study of Peak Oil: “2010” Former Shell CEO van der Veer: “2015” International Energy Agency 2008: “trends in energy supply and consumption are patently unsustainable” UK Energy Research Centre: between 2009 and 2031 Business calls oil crunch a threat to UK economy: National Petroleum Council 2007: “Facing hard truths” BP Statistical Review data: world oil production peaked in 2008 Dr. Sadad Al-Husseini (former Saudi Oil Minister) capacity outlook: 10-year production plateau Association for the Study of Peak Oil: “2010” Former Shell CEO van der Veer: “2015” International Energy Agency 2008: “trends in energy supply and consumption are patently unsustainable” UK Energy Research Centre: between 2009 and 2031 Business calls oil crunch a threat to UK economy: Opinions vary about the timing, but not about the outcome

15 divergent forecasts for world oil production, based on either population demand or geological fundamentals A bumpy plateau or “practical peak” has begun

Adding plausible price volatility to the lifecycle of exhaustible oil Business cycles mask the long-term depletion uptrend. High, volatile prices will cause recessions & defaults! Demand destruction offers a solution, if we make it happen early.

Global oil “budget” outlook Existing oil fields produce 85m b/day Production is declining by 4m b/day New discoveries are 4m b/day to 2014 Reserve capacity ~6m b/day, mostly in Middle East, uncertain New deepwater discoveries off Brazil and Mexico need new technology to produce, 5-10 years in future How these factors will integrate depends on demand (esp. in developing countries) and reduction of carbon emissions (if any) Existing oil fields produce 85m b/day Production is declining by 4m b/day New discoveries are 4m b/day to 2014 Reserve capacity ~6m b/day, mostly in Middle East, uncertain New deepwater discoveries off Brazil and Mexico need new technology to produce, 5-10 years in future How these factors will integrate depends on demand (esp. in developing countries) and reduction of carbon emissions (if any)

Oil Price Forecast ML sees demand rising and supply inelastic, spare capacity only in OPEC, with the band widening from $70-$85/b now to $60-$100/b in 2011 and to $50-150/b by 2014.

Forecasts of Oil Production, 2010 A crash program to adjust to declining oil will take 20 years (Hirsh-SAIC). Current estimates suggest that we have only 5-10 years.

Good renewable energy substitutes for FL Biofuels Solar

Are we using other resources sustainably? Old-growth long-leaf pine. Rock phosphate. Water

What do you think? How to prepare our community for resilience to resource constraints? 2010 Chevy Volt 1909 Baker Electric