chapter 21 exam study guide

what are diferent ways of measuring biodiversity

• number of species

• number of individuals in each of these species

how many species have been described

how many are likely to exist

1.5 million have been described but

7.5 million are likely to exist

what are primary threats to biodiversity

the combination of human population growth and the resources used by that population

oil mining by humans and pollution

what is the tragedy of commons

resources held in common will inevitably be over exploited

(no regulation in common area; remember fish and the ocean)

why are some extinctions invisible

because species are going extinct before they are even recorded as well as a lack of a fossil record

what are some important considerations for designing conservation areas

trying to see where is a biodiversity hotspot where a population can thrive

having a large preserve so more species thrive

challenges of designing a conservation area

getting rid of laws that protect conservation

biodiversity hotspot

a conservation concept developed by norman myers in 1988

a lot of species live here.

is this the best way to protect biodiversity?

yes i really think so, I also think that scientific involvement in conservation process is crucial.