chapter 3 terms
Card Set Information
chapter 3 terms
glossary terms chapter
glossary terms chapter 3 science textbook
Habitat loss occurs when events, ddue to natural disasters or human activities, alter a terrestrial or aquatic ecosystemso much that many species can no longer survive there
ex. can be caused by deforestation, draining wetlands
Deforestation occurs when forests are logged or cleared for human use, and are never replanted
A species that is accidentally or diliberately introduced into a new location.
ex. zebra mussels- introduced to great lakes through ballast water from Asia
A species that can take over the habitat of native species.
-alien species are invasive species
-ex. zebra mussels
Use or extraction of a resource until it is depleted
-eg. overfishing of atlantic cod, overhunting of passenger pigeons
the death of all the individuals of a species
eg. Dodo bird, passenger pigions etc.
-may happen naturally through background extinction, caused by slow changes in ecosystems that affect species, or through mass extinction which occurs more quickly
-may be caused by human activities such as overexploitation
The renewal of degraded or destroyed ecosystems through active human interactions.
- wetlands restoration
-controlling alien species
Regrowth of a forest, either through natural processes or through the planting of seeds or trees in an area where a forest was cut down
The use of a species to control the population growth or spread of an undesirable species
eg. use of a european fly to control the gypsy moth
eg. use of bacteria spraying to control tent caterpillars and other forest pests
the use of living organisms to clean up contaminated areas naturally
eg. use of plants to absorb heavy metals from toxic soil
eg. use of bacteria to clean up oil spills on the coast
The use of living organisms to add essential nutrients to depleted soils
eg. use of clover to add nitrogen to depleted soils