APES Ch. 9/10
Terms from chaptern9 and 10 or Miller & Spoolman's textbook "Living in The Environment". For AP Environmental Science class.
Terms in this set (20)
A continuous, low-level of extinction of species, occurring since the origins of life on earth.
The extinction of many species in a short period of geological time.
So few individual survivors of a species that it could soon become extinct over all or most of its natural range (the area in which it is normally found).
is still abundant in its natural range, but because of declining numbers, it is likely to become endangered.
Annual release of data by the the World Conservation Union that reports the world's threatened species.
Low-reproductive strategist, specialized niche, narrow distribution, high trophic level feeding, fixed migratory patterns, Rare, commercially valuable, large territory inhabited.
A species' usefulness to humans in providing ecological and economic services that make up the earth's natural capital.
Intrinsic (existence) Value
The belief that each wild species has an inherent right to exist, regardless of its instrumental value.
HIPPCO; causes of extinction
Habitat destruction, Invasive species, Population and resource use growth (too many resources being consumed), Pollution, Climate change, Overexploitation.
Old growth forest
an uncut or regenerated primary forest that has not been seriously disturbed by human activities or natural disasters for 200 years or more
breaking larger habitats into smaller, isolated pieces
plants and animals that have migrated to areas where they did not originate; often displace native species by outcompeting them for resources
Characteristics of Successful Invasive Species
High reproductive rate (r-selected species); pioneer species; long lived; High dispersal rate; Generalists; High genetic variability
Ecosystems vulnerable to invasive species
low diversity of native species; absence of fire; disturbed by human activity
Convention on International Trade in Endangered Species (CITES)
An international treaty banning hunting, capturing and selling of threatened or endangered species. Enforcement varies country to country.
Endangered Species Act
Identifies and protects endangered species in the U.S. and abroad. Forbids government agencies from authorizing or funding projects that pose a threat to an endangered species; also makes poaching in the US illegal. About 1,500 species listed.
HCP (habitat conservation plan)
A landowner, developer, or logger is allowed to destroy some critical habitat n exchange for taking steps to protect members of the species.
such as a severed head of a lowland gorilla in the Congo, is consumed as a source of protein by local people in parts of West Africa and sold in the national and international marketplace. Led to extinction of wild species in West Africa.
Primatologist and anthropologist, she discovered that chimps have tool-making skills, and with her agency she works to protect chimapanzees and their habitats. She is also president of Advocates for Animals.
Effects of poaching
When commercially valuable species are depleted, they become more rare and therefore more profitable, increasing their chance of extinction.