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17 Cards in this Set
- Front
- Back
Extinct
pg134 |
No memeber of the species remain
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Extinct in the wild
pg134 |
Species remain alive Only in captivity
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Globally Extinct
pg134 |
Extinct and Extinct in the wild is considered Globally Extinct. No where on the globe
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Locally Extinct
pg134 |
Extirpated. No longer found in an area it once inhabited but still found else where in the wild
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Regionally Extinct
pg134 |
Extinct in a Country or Region, but still found else where in the world in the wild.
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Last Mass Extinction?
pg135 |
Cretaceous: Mostly Dinos
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All the past Mass Extinctions were caused by______, but the current mass extinction is caused by_____.
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Past 5 caused by extraterrestrial events, this current extinction is cause by Humans .
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Extant
pg137 |
Living.
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Committed to extinction
pg139 |
Remaining individuals of a species that are doomed to extinction.
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Extinction Debt
pg139 |
Predicted eventual loss of species following habitat destruction and fragmentation
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"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. |
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Actual Extinction Rate
pg141 |
1%/century or .01% a year. This is 100 - 1000X greater than predicted.
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Highest Extinction rates occur where?
pg 141 |
Islands.
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Which is more vulnerable to extinction: Fresh Water or Marine ?
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Freshwater. Lack of resources.
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Known Extinctions:
Animal and Plant? Islands Species? Marine? pg 142 |
Animal and Plant- 726
Island- 351 Marine-14 |
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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 |
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When 50% of an island is lost, what % of species will be lost?
pg 148 |
10%
when 90% land is lost 50% species lost. |