Unit 2 Biodiversity Flashcards
(26 cards)
species diversity
variety of species
genetic diversity
variety of genes.
how many species
2 million named. 10 million estimated
species richness
number of species in an area
species evenness
relative abundance of each species
phylogeny
branching patterns of evolutionary relationships
genetic drift
small populations can change quickly. change in genetic composition of population over time as a result of random mating.
bottleneck effect
drastic and sudden drop in population size
founders effect
change in population from a small number of colonizing individual
allopatric speciation
when a species is isolated for so long they can’t interbreed when they are reintroduced.
Sympatric speciation
Evolution occurs without separation
inbreeding depression
when relative breed and cannot produce a viable offspring
anthropocentric
human centered . nature should provide for our needs
biocentric
life centered saying humans are part of all life and all species have equal value
ecocentric
earth centered
UN(united nations)
promoting world peace
command and control
regulations and fines
incentive based
uses profits and benefits
green tax
taxes any harmful emissions and activities
Law of supply
When price increaases supply will increase vice versa
Equilibrium
a point where a curve meets another curve. Suppliers find it worth while to exactly as many as the people will buy.
externalities
the cost of an impact a good or service has on the environment or people
GDP
the value of all products and services produced per year without including all of the externalities
GPI
addresses the externalities