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17 Cards in this Set

  • Front
  • Back
Extinct
pg134
No memeber of the species remain
Extinct in the wild
pg134
Species remain alive Only in captivity
Globally Extinct
pg134
Extinct and Extinct in the wild is considered Globally Extinct. No where on the globe
Locally Extinct
pg134
Extirpated. No longer found in an area it once inhabited but still found else where in the wild
Regionally Extinct
pg134
Extinct in a Country or Region, but still found else where in the world in the wild.
Last Mass Extinction?
pg135
Cretaceous: Mostly Dinos
All the past Mass Extinctions were caused by______, but the current mass extinction is caused by_____.
Past 5 caused by extraterrestrial events, this current extinction is cause by Humans .
Extant
pg137
Living.
Committed to extinction
pg139
Remaining individuals of a species that are doomed to extinction.
Extinction Debt
pg139
Predicted eventual loss of species following habitat destruction and fragmentation
"Background" extinction rates were predicted how?
pg141
Fossil records. 1-10 million yrs for a species to go extinct or evolve.
.0001-.00001% is the ESTIMATED extinction rate per year.
Actual Extinction Rate
pg141
1%/century or .01% a year. This is 100 - 1000X greater than predicted.
Highest Extinction rates occur where?
pg 141
Islands.
Which is more vulnerable to extinction: Fresh Water or Marine ?
Freshwater. Lack of resources.
Known Extinctions:
Animal and Plant?
Islands Species?
Marine?
pg 142
Animal and Plant- 726
Island- 351
Marine-14
Species Area Relationship
pg 145
Islands with Large areas have more species than islands with smaller area.
S=CA^z
S-Species
A-Area
C & Z- Consants
When 50% of an island is lost, what % of species will be lost?
pg 148
10%
when 90% land is lost 50% species lost.