Chapter 16.5 Conservation. KEY CONCEPT Conservation methods can help protect and restore ecosystems. Improving The Environment. If population growth and environmental pollution are not slowed down, they will become limiting factors for our species, as well as other species.
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KEY CONCEPT Conservation methods can help protect and restore ecosystems.
If population growth and environmental pollution are not slowed down, they will become limiting factors for our species, as well as other species.
Conservation involves the protection and wise use of our natural resources.
Natural Resources include the basic things in the natural world
Efforts are being made to help endangered species and to protect other forms of wildlife.
Endangered species also have protected habitats provided by wildlife refuges and national parks.
Laws have been passed regulating overhunting and overfishing to protect various species.
started to adopt
Governmental agencies have begun to take responsibility for environmental protection by passing laws to stop pollution.
Freshwater Wetlands Act
Hazardous Waste Disposal Regulations
Air Pollution Control Laws
State Environmental Quality Review Act
Returnable Container Law
Endangered Species Act
The Endangered Species Act works to protect individual species from extinction.
Deforestation- loss of forest which leads to severe erosion
Why is this a problem?
Old growth forest can be considered a nonrenewable resource because it would take centuries to reproduce
Forests provide O2 and remove CO2 from the atmosphere
They also store nutrients and provide food and habitat to organismsForest Resources
Overfishing- fish stocks in many fisheries are being harvested faster than they reproduce.
Why is this a problem?
People depend on the ocean as a major source of protein, both from finfish and from shellfish
With the amount of fish caught each year increasing the fish cannot reproduce fast enough to keep upOcean Resources
The ozone layer absorbs a great deal of harmful UV rays before it reaches the earth’s surface .
As the ozone layer is depleted UV exposure can cause sunburns, cancer, eye damage and decrease an organism’s resistance to disease
What is being done?
The US has joined many other nations to phase out the use of CFCsOzone Depletion
Polar ice caps will continue to melt and could rise enough to flood some low lying coastal areas
Storms and other weather disturbances could become more frequent and severe
Heat favors rodents weeds and insect that reproduce and spread quickly
What is being Done?
Alternate energy sources are being researched to reduce or stop the burning of fossil fuels that release gases into the atmosphere that retain heat.Global Warming