Taxacom: Galapagos

[John Grehan]

Ah! Just seen that I had already sent this out a while back, but forgot
that. Well, at least this is an update.

On Tue, Jul 2, 2024 at 4:19 PM John Grehan <calabar.john at gmail.com> wrote:

> Below, June communication with R & P Grant re Galapagos finches. No
> response (not surprisingly due to previous lack of response). This is a
> world where alternatives do not exist.
>
> John Grehan <calabar.john at gmail.com>
> prgrant at princeton.edu rgrant at princeton.edu
>
> Thu, Jun 6, 12:33 PM
> to rgrant, prgrant
>
> Dear colleagues,
>
> I noticed in your ms "From Microcosm to Macrocosm: Adaptive Radiation of
> Darwin’s Finches"  the following assertion: "At least 18 species evolved
> from a common ancestor (Fig. 1) in the relatively short time of one to two
> million years (Barker et al., 2015; Lamichhaney et al., 2015):"
>
> While I acknowledge that this is your preferred evolutionary model, as you
> know, there is alternative biogeographic evidence published in support of a
> much older origin for these and other biota of the Galapagos - as you would
> know from the copy of Heads & Grehan (2021) sent to you as a courtesy. But
> while you may believe in a particular model, you present it as a statement
> of fact rather than a preference. This is misleading as it gives the
> impression that no scientific alternative exists. Surely, in the interests
> of science and open exploration, the readership needs to know the context
> of your belief. I would suggest as an open and honest declaration, that
> your statement be modified to:  "At least 18 species evolved from a common
> ancestor (Fig. 1) that we believe occured in a relatively short time of one
> to two million years (Barker et al., 2015; Lamichhaney et al., 2015),
> although older origins have been proposed from biogeographic evidence
> (Heads & Grehan 2021):" Surely that is not too much to ask?
>
> Regards,
>
> John Grehan
>
>
>
> --
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