1756579
Beschreibung
Quiz von Laurel McLaughlin, aktualisiert more than 1 year ago
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Erstellt von Laurel McLaughlin
vor mehr als 9 Jahre
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Frage 1
Frage
If individuals in the last remaining population of a particular bird species were all highly related, which type of diversity would be of greatest concern when planning to keep the species from going extinct?
Image:
related-birds (image/jpg)
Antworten
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species diversity
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genetic diversity
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ecosystem diversity
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taxonomic diversity
Frage 2
Frage
Why is the extinction of the Yangtze River dolphin considered particularly significant?
Antworten
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it was a keystone species
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it was from a species-poor lineage
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there was high genetic diversity within the species
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it was a keystone prey species
Frage 3
Frage
You discover a new species at University of Waterloo, and it is only found on campus. This new species is best described as:
Antworten
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endangered
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vulnerable
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endemic
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sensitive
Frage 4
Frage
Which of the following is likely NOT a major threat to the unique species pairs of stickleback in British Columbia? (Select all that apply)
Image:
stickleback-fish (image/jpg)
Antworten
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land development and habitat degradation
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introduction of alien species
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overexploitation
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deterioration of water quality
Frage 5
Frage
Why are smaller, fragmented habitats often of lesser quality than contiguous habitats?
Antworten
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fragmentation often leads to detrimental edge effects
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fragmentation reduces species' ability to move between habitat patches
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smaller habitats often do not contain the necessary resources for large animals
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all of the above
Frage 6
Frage
Why are smaller, isolated populations more likely to be extirpated?
Antworten
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they are more likely to be exterminated by severe stochastic events
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they are subject to inbreeding depression and genetic drift
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they are more likely to be subject to fitness trade-offs
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both A and B
Frage 7
Frage
What is the leading cause of endangerment for marine species?
Antworten
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pollution
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invasive species
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overexploitation
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habitat loss
Frage 8
Frage
Habitat loss is the leading cause of endangerment for terrestrial species.
Antworten
- True
- False
Frage 9
Frage
Most endangered species are currently found on islands.
Antworten
- True
- False
Frage 10
Frage
Experimental evidence from Brazil indicates that fragmenting tropical wet forests results in:
Antworten
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an eventual recovery of biodiversity and biomass
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a decrease in biodiversity, and a decrease in biomass
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an increase in biodiversity, and a decrease in biomass
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a decrease in biodiversity, and an increase in biomass
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