ECOL 182R - UofA EXAM 3 Questions With
Correct Answers
What is Biodiversity, and at which levels is it measured? - CORRECT ANSWER✔✔-
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Biological Diversity. Measured at Genetic, Species, Taxonomic, and Ecosystem
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Diversity.
How many species on earth? - CORRECT ANSWER✔✔-1.5 million
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how many species of microbes in your mouth? - CORRECT ANSWER✔✔-500
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What does miniaturized mean? - CORRECT ANSWER✔✔-Happens to speicies due
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to low nutrients in deep-sea sediment habitat
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Endemic Species/Endemism - CORRECT ANSWER✔✔-Species found in one place
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and nowhere else
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Biodiversity hotspots - CORRECT ANSWER✔✔-Ecoregions designated as high
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priority for conservation (highly diverse and threatened)
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Endangered Species - CORRECT ANSWER✔✔-Species whose numbers have
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decreased so drastically that it is almost certain to go extinct without effective
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conservation efforts |
, 3 categories of endangerment - CORRECT ANSWER✔✔-vulnerable, endangered,
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critically endangered |
factors that affect endangerment - CORRECT ANSWER✔✔-Habitat Loss (highest)
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Invasive Species |
Over Exploitation (second highest)
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Pollution
Native Species Interactions
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Natural causes |
Overexploitation is... - CORRECT ANSWER✔✔-main endangerment factor for
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marine ecosystems|
90% of top predatory fish gone due to... - CORRECT ANSWER✔✔-overfishing in
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oceans worldwide (Boris and Worm 2002)
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Deforestation - CORRECT ANSWER✔✔-major threat particularly in tropical forests
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Habitat fragmentation - CORRECT ANSWER✔✔-follows deforestation
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How does fragmentation affect the quality of tropical wet forests habitats? -
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CORRECT ANSWER✔✔-Fragmentation reduces the quality of wet forest habitats
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because the Biomass will decline sharply along edges of forest fragments.
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Correct Answers
What is Biodiversity, and at which levels is it measured? - CORRECT ANSWER✔✔-
| | | | | | | | | | | |
Biological Diversity. Measured at Genetic, Species, Taxonomic, and Ecosystem
| | | | | | | | |
Diversity.
How many species on earth? - CORRECT ANSWER✔✔-1.5 million
| | | | | | | |
how many species of microbes in your mouth? - CORRECT ANSWER✔✔-500
| | | | | | | | | |
What does miniaturized mean? - CORRECT ANSWER✔✔-Happens to speicies due
| | | | | | | | | |
to low nutrients in deep-sea sediment habitat
| | | | | |
Endemic Species/Endemism - CORRECT ANSWER✔✔-Species found in one place
| | | | | | | | |
and nowhere else
| |
Biodiversity hotspots - CORRECT ANSWER✔✔-Ecoregions designated as high
| | | | | | | |
priority for conservation (highly diverse and threatened)
| | | | | |
Endangered Species - CORRECT ANSWER✔✔-Species whose numbers have
| | | | | | | |
decreased so drastically that it is almost certain to go extinct without effective
| | | | | | | | | | | | |
conservation efforts |
, 3 categories of endangerment - CORRECT ANSWER✔✔-vulnerable, endangered,
| | | | | | | |
critically endangered |
factors that affect endangerment - CORRECT ANSWER✔✔-Habitat Loss (highest)
| | | | | | | |
Invasive Species |
Over Exploitation (second highest)
| | |
Pollution
Native Species Interactions
| |
Natural causes |
Overexploitation is... - CORRECT ANSWER✔✔-main endangerment factor for
| | | | | | | |
marine ecosystems|
90% of top predatory fish gone due to... - CORRECT ANSWER✔✔-overfishing in
| | | | | | | | | | | |
oceans worldwide (Boris and Worm 2002)
| | | | |
Deforestation - CORRECT ANSWER✔✔-major threat particularly in tropical forests
| | | | | | | |
Habitat fragmentation - CORRECT ANSWER✔✔-follows deforestation
| | | | |
How does fragmentation affect the quality of tropical wet forests habitats? -
| | | | | | | | | | | |
CORRECT ANSWER✔✔-Fragmentation reduces the quality of wet forest habitats
| | | | | | | | |
because the Biomass will decline sharply along edges of forest fragments.
| | | | | | | | | |
