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Vojtech Bartak

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Articles

Should regional species loss be faster, or slower, than local loss? It depends on density-dependent rate of death

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By Petr Keil, Adam Clark, François Leroy, Vojtech Bartak
| BioRxiv
Abstract Assessment of the rate of species loss, which we also label extinction, is an urgent task. However, the rate depends on spatial grain (average area A) over which it is assessed; local species loss can be on average faster, or slower, than regional or global loss. Ecological mechanisms behind this discrepancy are unclear. We propose that the relationship between extinction rate and A is driven by two classical ecological phenomena: the Allee effect and the Janzen-Connell effect.
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