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ECOL111 - Otago NZ (Conservation of
Species) Questions and Answers (100%
Correct Answers) Already Graded A+
Compare the current rates of extinction with the 'natural' background
extinction rate. Ans: Currently we are losing birds and mammals at
approx 1% per century. This is 100-1000 x the 'natural rate' of extinction.
© 2026 Assignment Expert
Why does biodiversity loss matter? Ans: Biodiversity loss matters on many
different levels including the organisms' intrinsic value, as well as their
economic value (direct- food, drugs; indirect- ecotourism, pollination of
crops), aesthetic values, cultural and spiritual values, scientific and
Guru01 - Stuvia
medical value, as well as from an ethical point of view.
What is the IUCN Red List? Name the categories. What are the general
taxonomic trends? Ans: The Red List lists the global risk of extinction for
species. Currently IUCN lists 25,821 species threatened with extinction.
Vulnerable is the probability of extinction of 10% in 100 years.
Endangered is the probability of extinction of 20% with 20 years or 5
generations. Critical is the probability of extinction of at least 50% within
10 years or three generations. 2017 Red List suggests that 13% of birds,
25% of mammals, 41% of amphibians, and 40% for gymnosperm plants
are at risk of extinction. In general, all taxonomy is declining.
EXTINCT (EX)
EXTINCT IN THE WILD (EW)
CRITICALLY ENDANGERED (CR)
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ENDANGERED (EN)
VULNERABLE (VU)
NEAR THREATENED (NT)
LEAST CONCERN (LC)
DATA DEFICIENT (DD)
© 2026 Assignment Expert
NOT EVALUATED (NE)
How does DOC's Threat Classification Scheme compare with the IUCN
Guru01 - Stuvia
Red List? Ans: This classification is on a national level but not a global
basis. There are three sub-categories of 'threatened' are similar to the
IUCN ratings. This classification recognises that some taxa have naturally
restricted ranges, which should be taken into account regarding risk of
extinction.
EXTINCT
NATIONALLY CRITICAL
NATIONALLY ENDANGERED
NATIONALLY VULNERABLE
DECLINING
RECOVERING
1
ECOL111 - Otago NZ (Conservation of
Species) Questions and Answers (100%
Correct Answers) Already Graded A+
Compare the current rates of extinction with the 'natural' background
extinction rate. Ans: Currently we are losing birds and mammals at
approx 1% per century. This is 100-1000 x the 'natural rate' of extinction.
© 2026 Assignment Expert
Why does biodiversity loss matter? Ans: Biodiversity loss matters on many
different levels including the organisms' intrinsic value, as well as their
economic value (direct- food, drugs; indirect- ecotourism, pollination of
crops), aesthetic values, cultural and spiritual values, scientific and
Guru01 - Stuvia
medical value, as well as from an ethical point of view.
What is the IUCN Red List? Name the categories. What are the general
taxonomic trends? Ans: The Red List lists the global risk of extinction for
species. Currently IUCN lists 25,821 species threatened with extinction.
Vulnerable is the probability of extinction of 10% in 100 years.
Endangered is the probability of extinction of 20% with 20 years or 5
generations. Critical is the probability of extinction of at least 50% within
10 years or three generations. 2017 Red List suggests that 13% of birds,
25% of mammals, 41% of amphibians, and 40% for gymnosperm plants
are at risk of extinction. In general, all taxonomy is declining.
EXTINCT (EX)
EXTINCT IN THE WILD (EW)
CRITICALLY ENDANGERED (CR)
, For Expert help and assignment handling,
2
ENDANGERED (EN)
VULNERABLE (VU)
NEAR THREATENED (NT)
LEAST CONCERN (LC)
DATA DEFICIENT (DD)
© 2026 Assignment Expert
NOT EVALUATED (NE)
How does DOC's Threat Classification Scheme compare with the IUCN
Guru01 - Stuvia
Red List? Ans: This classification is on a national level but not a global
basis. There are three sub-categories of 'threatened' are similar to the
IUCN ratings. This classification recognises that some taxa have naturally
restricted ranges, which should be taken into account regarding risk of
extinction.
EXTINCT
NATIONALLY CRITICAL
NATIONALLY ENDANGERED
NATIONALLY VULNERABLE
DECLINING
RECOVERING
