
Which best defines an ecological 'sink' population in metapopulation theory?
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Get StartedWhich best defines an ecological 'sink' population in metapopulation theory?
Options:
- A population that cannot sustain itself without immigration
- A population with higher birth than death rates
- A population that increases by emigration only
- A permanently isolated population
Correct answer: A population that cannot sustain itself without immigration
Explanation: A sink population has local birth rates lower than death rates and persists only with net immigration; the formal source–sink concept was articulated in ecological literature around 1988.
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