5 Written questions
5 Matching questions
- domesticated species
- population viability analysis (PVA)
- CITES treaty of 1975
- species approach
- early successional plant species
- a Convention on International Trade in Endangered Species. Lists (1) some 900 species that cannot be commercially traded as live specimens or wildlife products because they are in danger of extinction and (2) restricts international trade of 29,000 other species because they are at risk of being threatened.
- b Plant species found in the early stages of succession that (1) grow close to the ground, (2) can establish large populations quickly under harsh conditions, and (3) have short lives.
- c Use of mathematical models to estimate a population's risk of extinction.
- d Goal: to protect species from premature extinction.
Strategies: identify endangered species; protect critical habitats.
Tactics: legally protecting endangered species; propagating endangered species in captivity; reintroducing species back into suitable habitats.
- e Wild species tamed or genetically altered by crossbreeding for use by humans for food (cattle, sheep, and food crops), pets (dogs and cats), or enjoyment (animals in zoos and plants in gardens).
5 Multiple choice questions
- So few members remain that the species cannot maintain its ecological role, or members only survive in captivity.
- prohibits transporting live/dead animals or their parts across state borders without a federal permit.
- Estimate of the smallest number of individuals necessary to ensure the survival of a population in a region for a specified time period, typically ranging from decades to 100 years.
- Minimum area of suitable habitat needed to maintain the minimum viable population. See minimum viable population.
- All free, undomesticated species. Sometimes the term is used to describe only free, undomesticated animal species.
5 True/False questions
wildlife management → Manipulation of populations of wild species (especially game species) and their habitats for (1) human benefit, (2) the welfare of other species, and (3) the preservation of threatened and endangered wildlife species.
threatened species → Wild species that is still abundant in its natural range but likely to become endangered because of a decline in numbers.
endangered species → Species that is found in only one area. Such species are especially vulnerable to extinction.
nonnative species → Species that migrate into an ecosystem or are deliberately or accidentally introduced into an ecosystem by humans.
instrumental value → Value of an organism, species, ecosystem, or the earth's biodiversity based on its existence, regardless of whether it has any usefulness to us.