indicator species
provide information on overall health of an ecosystem
ex. polar bears
umbrella species
have habitiat requirements that are so large that protecting them protects lots of other species
flagship species
are large, recognizable and/or charismatic
ex. giant pandas
keystone species
have roles that are larger than their abundance would indicate
list and describe the three levels of biodiversity.
genetic diversity: the amount of genetic variation occuring within populations
species diversity: the number of species in a community
ecosystem diversity: diversity of structure and function within an ecosystem
Diversity-stability hypothesis
more speices = better function
graph is linear