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Quiz

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Department
Environment
Course Code
ENV100Y5
Professor
murk
Study Guide
Quiz

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Sympatric speciation - populations become
reproductively isolated within the same area
Extinction = the disappearance of a species from Earth
Some species are more vulnerable to extinction than
others ? because…. They are picky/ cant adapt well
Niche - resources
Realized niche- you have to share and effect others
Fundamental niche ideal
Allopatric speciation separated by location but same
species
Organizational Ecological
Population ecology quantative population/ same spsecies,
same place, same time
Community ecology - interactions
Ecosystem ecology living and non living
Habitat = the environment in which an organism lives
Habitat selection = non-random use of available habitat
Random - trees
Uniform penguins space for eggs/ territory
Clumped fish – b/c social or good environment
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Climax aka longest lasting survivors, best adaption, not
much higher than these trees, more competition than pioneer
level
Endemic species: species with a small geographic
distribution
Small populations: lack genetic diversity
mass extinction: 50 95% of all life gone
Nebular theory -
Mantle – dense
Core – iron
J outer layer, unranus
Terresteral inner planets– venus
Early earth hot, dense, little free oxygen?
Earth 4.4 Ga
Sun 4.5 Ga
Universe 14 Ga
Density dependent influence affected by pop density
Density independent outside factors unrelated to pop
density
Invative - exotic
Succession predictable
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