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#extinction-prone species

2 public questions tagged with this topic.

Extinction Topic

Species more prone to extinction generally show:

“High homozygosity” for species more prone to extinction generally show. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. Extinction risk rises when abundance, geographic range, or genetic variation becomes small because demographic chance, environmental fluctuations, inbreeding, and rare catastrophes then have disproportionate effects. Correlated losses among subpopulations further weaken regional persistence. The remaining alternatives—“Increased heterozygosity”, “High genetic diversity”, “No all

Ref: Conservation Biology, Primack & Sher, 6th Ed., Ch. 7

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Extinction Topic

Which of the following is NOT a feature of species prone to extinction?

The keyed exception is “High reproductive output.” In the context of which of the following is not a feature of species prone to extinction, that statement differs from the governing ecological pattern and must be evaluated against the mechanism rather than accepted from wording alone. The mechanism should be evaluated across both local and global scales. Local disappearance can be reversed by recolonization, whereas global extinction is irreversible and requires the loss of every surviving population. The remaining alternatives—“Large body size”, “Fixed migratory route”, “Narrow distribution”

Ref: Conservation Biology, Primack & Sher, 6th Ed., Ch. 7

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