land use in the world. land use in the united states rangeland and pasture 29%
TRANSCRIPT
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Land Use in the WorldLand Use in the World
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Land Use in the United StatesLand Use in the United States
Rangeland and pasture 29%
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U.S. Public LandsU.S. Public Lands
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Managing U.S. Public LandsManaging U.S. Public Lands
Management ethicsManagement ethics
EconomicEconomic
Balanced multiple useBalanced multiple use
EcologicalEcological
Preservationist Preservationist
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Changing ManagementChanging Management
Through late-1800s: economicThrough late-1800s: economic
Developed to maximize use and profitDeveloped to maximize use and profit
Sold to homesteaders, railroads,timber and mining companies
Sold to homesteaders, railroads,timber and mining companies
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Changing ManagementChanging Management
Late-1800s: balanced multiple useLate-1800s: balanced multiple use
Use in several ways, but manageproperly so resource is not damaged
Use in several ways, but manageproperly so resource is not damaged
Maximum sustained yieldMaximum sustained yield
Set aside forest reserves to ensure adequate timber supply, protectriver watersheds
Set aside forest reserves to ensure adequate timber supply, protectriver watersheds
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Changing ManagementChanging Management
Also late-1800s: ecologicalAlso late-1800s: ecological
Use it, but emphasize maintainingnatural aspects (plants, animals)
Use it, but emphasize maintainingnatural aspects (plants, animals)
1872: lands set aside for eventual 1stnational park - Yellowstone
1872: lands set aside for eventual 1stnational park - Yellowstone
Ethic supported greatly by U.S.President Theodore Roosevelt
Ethic supported greatly by U.S.President Theodore Roosevelt
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Changing ManagementChanging Management
Throughout 1900s: preservationistThroughout 1900s: preservationist
No development, leave as is for futureNo development, leave as is for future
Aldo Leopold, WI conservationistAldo Leopold, WI conservationist
1964: National Wilderness Act (4%)- lands set aside, retained in natural state, no development unless for the “national good”
1964: National Wilderness Act (4%)- lands set aside, retained in natural state, no development unless for the “national good”
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Today’s ManagementToday’s Management
Most lands managed according tobalanced multiple use or ecologicalethics- e.g. U.S. Forest Service
Bureau of Land Management
Most lands managed according tobalanced multiple use or ecologicalethics- e.g. U.S. Forest Service
Bureau of Land Management
Public lands still facing many problemsPublic lands still facing many problems
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Conflicting DemandsConflicting Demands
Mineral Resources
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Wilderness ProblemsWilderness Problems
Suffering from overuseSuffering from overuse
Limited entry in many areasLimited entry in many areas
Timber, mining companies wantaccess to resources
Timber, mining companies wantaccess to resources
For the “national good”For the “national good”
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Park ProblemsPark Problems
Severe overuseSevere overuse
Billions of visitors each yearBillions of visitors each year
Cars, noise, pollution, litter, crimeCars, noise, pollution, litter, crime
Conflicts between providing forvisitor enjoyment and stillconserving resources
Conflicts between providing forvisitor enjoyment and stillconserving resources
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Forest ProblemsForest Problems
Conflicting demandsConflicting demandsTimber, grazing, recreation, mining,
ecology
Timber, grazing, recreation, mining,ecology
Ecological benefits: air cleaning,erosion control, oxygen, soil fertility,water recycling, wildlife shelter
Ecological benefits: air cleaning,erosion control, oxygen, soil fertility,water recycling, wildlife shelterExceeding maximum sustained yield
in many areas
Exceeding maximum sustained yieldin many areas
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Rangeland ProblemsRangeland Problems
OvergrazingOvergrazing
Too many on too little for too longToo many on too little for too long
Kills grass root systemsKills grass root systems
When combined with drought,overgrazing can cause desertification- conversion to desert
When combined with drought,overgrazing can cause desertification- conversion to desert
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Degradation of Tropical ForestsDegradation of Tropical Forests
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Tropical DeforestationTropical Deforestation
Rapid and increasing Rapid and increasing
Loss of biodiversity Loss of biodiversity
Cultural extinction Cultural extinction
Unsustainable agriculture and ranching Unsustainable agriculture and ranching
Clearing for cash crop plantations Clearing for cash crop plantations
Commercial logging Commercial logging
Fuelwood Fuelwood
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Wildlife ResourcesWildlife Resources
What is happening to the wildlifeand plant resources around us today?
What is happening to the wildlifeand plant resources around us today?
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U.S. Species DiversityU.S. Species Diversity
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Decreasing BiodiversityDecreasing Biodiversity
10-20% of species alive in 1975 wereextinct in 2000
10-20% of species alive in 1975 wereextinct in 2000
Mostly plants, invertebrates in tropicalrain forests (many undescribed species)
Mostly plants, invertebrates in tropicalrain forests (many undescribed species)
40% of all species live in tropical areas40% of all species live in tropical areasDisappear along with forestsDisappear along with forests
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Extinction Not NewExtinction Not New
99% of all species have gone extinct99% of all species have gone extinct
Gradual environmental changes havebeen responsible for most extinctions
Gradual environmental changes havebeen responsible for most extinctions
Rapid environmental changes fromasteroids, etc. also have been importantin many extinctions
Rapid environmental changes fromasteroids, etc. also have been importantin many extinctions
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Extinction RatesExtinction Rates
Background (natural) rate of extinctionBackground (natural) rate of extinction
Massextinction
Massextinction
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Why Should We Care About Extinctions and Biodiversity?Why Should We Care About Extinctions and Biodiversity?
1) economics
2) aesthetics
3) ecological
4) ethics
1) economics
2) aesthetics
3) ecological
4) ethics
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Causes of Premature Extinction of Wild SpeciesCauses of Premature Extinction of Wild Species
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Habitat Disturbance and DestructionHabitat Disturbance and Destruction
California Condor
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Commercial HuntingCommercial Hunting
Black Rhino
Range in 1700
Range today(about 2,400 left)
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Predator and Pest ControlPredator and Pest Control
African Elephant
Probable range 1600
Range today(300,000 left)
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Collecting for Pets, Zoos, ResearchCollecting for Pets, Zoos, Research
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PollutionPollution
Bald Eagle
- DDT
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Species IntroductionsSpecies Introductions
Dodo BirdZebra Mussel
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Threats from Nonnative SpeciesThreats from Nonnative Species
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Strategies for Protecting Biodiversity
Strategies for Protecting Biodiversity
Species approachSpecies approach
Ecosystem approach
Ecosystem approach
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The Species Approach: Legal MeansThe Species Approach: Legal Means
International Treaties: CITES- Convention on International Trade in Endangered Species
International Treaties: CITES- Convention on International Trade in Endangered Species
National Laws: ESA- Endangered Species Act
National Laws: ESA- Endangered Species Act
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The Species Approach: The SanctuaryThe Species Approach: The Sanctuary
Wildlife refuges and protected areas- e.g. whooping cranes
Wildlife refuges and protected areas- e.g. whooping cranes
Zoos and Aquariums- captive breeding programs
Zoos and Aquariums- captive breeding programs
Gene banks, botanical gardens, and farms Gene banks, botanical gardens, and farms
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The Ecosystem ApproachThe Ecosystem Approach
Biosphere reservesBiosphere reserves
U.S. has >30 reserves- Yellowstone National Park- Great Smoky Mtns. National Park
U.S. has >30 reserves- Yellowstone National Park- Great Smoky Mtns. National Park
Other countries have similar reservesOther countries have similar reserves
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Bird Success StoriesBird Success Stories
California CondorCalifornia Condor
Whooping CraneWhooping Crane
Peregrine FalconPeregrine Falcon
Canada GooseCanada Goose
Wild TurkeyWild Turkey
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Economics and the EnvironmentEconomics and the Environment
Sustaining economic growth?Sustaining economic growth?
- Is growth necessary for progress?- Is growth necessary for progress?
- Limited natural resources- Limited natural resources
- Limited capacity to deal with wastes- Limited capacity to deal with wastes
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Directed Economic GrowthDirected Economic Growth
Identify different forms of growthwith cost-benefit analyses
Identify different forms of growthwith cost-benefit analyses
Environmentally good (GDP)Environmentally good (GDP)
Environmentally bad (GDP)Environmentally bad (GDP)
Redirect growthRedirect growth
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Redirecting Economic GrowthRedirecting Economic Growth
Reduce polluting growth, and growthdependent on nonrenewable resources
Reduce polluting growth, and growthdependent on nonrenewable resources
Encourage “clean” and efficientgrowth, and growth dependent onrenewable resources
Encourage “clean” and efficientgrowth, and growth dependent onrenewable resources
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Harmful External Costs and Full-Cost PricingHarmful External Costs and Full-Cost Pricing
External costs - need to eliminatewaste in the economy
External costs - need to eliminatewaste in the economy
Full-cost pricing - pay true cost forgoods and services- recycling fee and pollutiontax to cost of new tires, oilchanges
Full-cost pricing - pay true cost forgoods and services- recycling fee and pollutiontax to cost of new tires, oilchanges
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PoliticsPolitics
Orderly distribution of resourcesOrderly distribution of resources
Political systems designed toaccomplish this goal
Political systems designed toaccomplish this goal
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United States Political SystemUnited States Political System
Legislative: enact laws to ensureequitable distribution of resources
Legislative: enact laws to ensureequitable distribution of resources
Clean Air & Water Acts, WaterPollution Control Act, RCRA,Endangered Species Act, NationalEnvironmental Policy Act (NEPA)
Clean Air & Water Acts, WaterPollution Control Act, RCRA,Endangered Species Act, NationalEnvironmental Policy Act (NEPA)
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NEPANEPA
Environmental impact statementEnvironmental impact statement
Short- and long-term effects ofproject on the environment
Short- and long-term effects ofproject on the environment
Examine alternativesExamine alternatives
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United States Political SystemUnited States Political System
Executive: enforce the lawsExecutive: enforce the laws
Environmental Protection Agency(EPA)
Environmental Protection Agency(EPA)
Enforce environmental regulationsEnforce environmental regulations
Distribute federal money forenvironmental purposes (Superfund)
Distribute federal money forenvironmental purposes (Superfund)
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United States Political SystemUnited States Political System
Judicial: interpreting the lawsJudicial: interpreting the laws
Environmental law- Who “speaks for the trees”?
Environmental law- Who “speaks for the trees”?
TheLorax
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Environmental Policy in theUnited StatesEnvironmental Policy in theUnited States
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Factors Hindering Democracies in Dealing with Environmental ProblemsFactors Hindering Democracies in Dealing with Environmental Problems
Lack of long-range planning(usually focus on short-term issues)
Lack of long-range planning(usually focus on short-term issues)
Special interest groups have too muchinfluence
Special interest groups have too muchinfluence
Too much bureaucracy Too much bureaucracy
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Factors Hindering Democracies in Dealing with Environmental ProblemsFactors Hindering Democracies in Dealing with Environmental Problems
Reactive to problems instead of proactive Reactive to problems instead of proactive
Major affected groups do not vote; no obligation on the part of politicians
Major affected groups do not vote; no obligation on the part of politicians
Elected officials spend too much time raising money to be reelected
Elected officials spend too much time raising money to be reelected
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Religion and the EnvironmentReligion and the Environment
Most environmental degradation has beenthe result of human attitudes and values.
Most environmental degradation has beenthe result of human attitudes and values.
Self-centered view of nature Self-centered view of nature
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Religion and the EnvironmentReligion and the Environment
All major religions emphasize humans asa part of nature
All major religions emphasize humans asa part of nature
Steward of nature Steward of nature
A steward is a caretaker A steward is a caretaker
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Religion and the EnvironmentReligion and the Environment
Most people do not practice their religious or philosophical beliefs when it relates to the environment (not acting as stewards)
Most people do not practice their religious or philosophical beliefs when it relates to the environment (not acting as stewards)
Human population growth Resource problems Pollution problems
Human population growth Resource problems Pollution problems
More emphasis is being placed on environmental concerns now by the world’s religious leaders.
More emphasis is being placed on environmental concerns now by the world’s religious leaders.
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Ecological Crisis?Ecological Crisis?
Gloom and doom? Gloom and doom?
Technological optimism? Technological optimism?
“Good old days”? “Good old days”?
An important beginning An important beginning
Lots more to accomplish Lots more to accomplish