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Questions tagged [speciation]

Questions pertaining to the processes by which new species arise.

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At what point in life's history was biodiversity at its greatest?

When considering plant & animal species throughout the entire Earth, at what point in life's history was biodiversity at its greatest? The aforementioned question stems from this article about ...
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How did hydrophilic plants become established on an isolated island with an arid coastal zone?

I find unconvincing the existing explanation of how several hydrophilic endemic plants became established at St Helena. This is one of the most isolated islands in the world, has an arid semi-desert ...
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How are baselines for extinction rates established?

At the time of 2010, the UN Environment Programme estimated that 150-200 species of plant, insect, bird and mammal become extinct every 24 hours, and, that this is nearly 1000 times greater than "...
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How do I use BEAST for divergence time estimation in this case?

I am interested in using BEAST to find the divergence time estimates of species separations within a genus of frogs. The genus separated from a outgroup taxon I have chosen around 80 million years ago....