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Date: Fri, 25 Nov 2005 21:50:21 +0000
From: [unknown]
To: phylocode@ouvaxa.cats.ohiou.edu
Subject: Re: PhyloCode Taxonomic Classifications
So talk of seeing how to specify species using PhyloCode are not stri= ctly a part of PhyloCode? It is like translating between two language= s? In any event with all the various definitions of species, for Phyl= oCode would the following do? Species:If sexually produced they are g= roups of actually or potentially interbreeding natural populations bu= t if asexually produced they pass down their own forms with both type= of groups members diverging from one another towards separate specie= s if not prevented from doing so. Yisrael Asper yisraelasper@comcast.net Pittsburgh PA > Clades can contain smaller clades, so one clade can consist of seve= ral=20 > different smaller clades. >=20 > Two arguably important semantic issues: >=20 > - Phylogenetic nomenclature is about nomenclature, not about=20 > classification. We don't classify at all anymore. We try to find th= e Tree=20 > of Life (phylogenetics), and then we tie labels to defined places o= n it=20 > (nomenclature). We don't hack the tree apart so we could fit its pa= rts=20 > into prefabricated boxes (that would be classification) -- we simpl= y don't=20 > need that. Nothing stops us from printing the tree with the names o= n it. >=20 > - The term "taxonomy" is currently in use for several different thi= ngs (as=20 > well as for all of them at once). Originally, however, it was inven= ted for=20 > "the theory of classifications" (Arthur Pyramus de Candolle, 1812).= Under=20 > this definition, phylogenetic nomenclature is the end of taxonomy b= ecause=20 > it is the end of classification -- just like phylogenetics, confusi= ngly=20 > called "phylogenetic systematics" by its (confused) inventor, actua= lly was=20 > the end of systematics*. >=20 > * A similarly confused term that seems to most commonly mean "how t= o enter=20 > species into an existing classification".