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I am having a really hard time to understand why we need to discuss or refer to species concept or even imply the value of a unified species concept when in fact we are dealing with nomenclatural issues. We are naming taxa = clades and whether people draw an
analogy between these and 'species' should be none of our business.
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<div>Nico</div>
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<div>On Mar 18, 2013, at 1:48 PM, de Queiroz, Kevin wrote:</div>
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<div>Yes, of course I'm aware of that issue. However, I still think it is more<br>
appropriate and useful to view those differences as criteria that exist<br>
within the context of a single general concept of species. I've used a<br>
cartographic analogy to describe this situation previously (see de<br>
Queiroz, 1999, The general lineage concept of species and the defining<br>
properties of the species category, p. 64-65): in the context of the<br>
single general species concept, the various properties that are<br>
responsible for the differences among traditional species definitions<br>
("concepts") can be viewed as criteria for deciding which species to<br>
represent in a taxonomy that function analogously to criteria that are<br>
used to decide which population centers to represent on a map. See also<br>
O'Hara (1993, Systematic generalization, historical fate, and the species<br>
problem).<br>
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In addition, I've argued in a different paper (de Queiroz, 2005, A unified<br>
concept of species and its consequences for the future of taxonomy) that<br>
we should not over-emphasize one or another species criterion (as implied<br>
in David M's suggestion that authors should state which species "concept"<br>
they have adopted in the protologue) but rather list ALL of the relevant<br>
properties that the species in question is inferred both to possess and<br>
not to possess. See the section "Current Taxonomic Conventions are<br>
Inadequate" (bottom p. 209 top p. 210) in the cited paper.<br>
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On 3/17/13 2:35 PM, "David Marjanovic" <<a href="mailto:david.marjanovic@gmx.at">david.marjanovic@gmx.at</a>> wrote:<br>
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<blockquote type="cite">Points taken, but...<br>
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<blockquote type="cite">(I also don't think that most biologists really adopt different<br>
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<blockquote type="cite">species concepts, though they tend to confuse operational criteria<br>
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<blockquote type="cite">with concepts).<br>
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<blockquote type="cite">Different criteria lead to different results. At our 2nd meeting (Yale<br>
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<blockquote type="cite">2006), somebody (Yannick Bertrand, I think) gave a presentation, saying<br>
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<blockquote type="cite">that there are from 101 to 249 endemic bird species in Mexico, depending<br>
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<blockquote type="cite">on what one means by "species". That's what I mean.<br>
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<div style="font-size: 12px; ">Nico Cellinese, Ph.D.</div>
<div style="font-size: 12px; ">Assistant Curator, Botany & Informatics</div>
<div style="font-size: 12px; ">Joint Assistant Professor, Department of Biology</div>
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<div style="font-size: 12px; ">Florida Museum of Natural History</div>
<div style="font-size: 12px; ">University of Florida</div>
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