Inadequacy of cladistics
ralperin at TERRA.COM.BR
Sat Jan 24 09:44:08 CST 2004
Essentialy a cluster analysis????
There are a lot of assumptions under the method!
Process are ignored? Why to understand the process if we cannot test
them? Cladistics methodology is not concerned to the process, its an
I think the probelm is under the molecular "adaptations" of what
really hennigian cladistics are concerned! I only see similarities or
OTUs in such molecular methods, not in any Cladistics. Maybe what we
have to look is what Cladistics means to you!
Friday, January 23, 2004, 4:37:05 PM, you wrote:
RZMO> I think I agree. Cladistics is essentially a cluster analysis that groups
RZMO> taxa. The theory is simplistic, and details of process are ignored. Of
RZMO> course, we don't know details of process for most taxa, so as long as
RZMO> cladists state we are using a simple model to cluster OTUs, and are not
RZMO> reconstructing a process, that's okay. The problem, is, as you say, that
RZMO> there is a confusion between such.
RZMO> In molecular terms, finding similarities between introns shows
RZMO> relationships, finding dissimilarities between exons shows process. I think.
RZMO> Richard H. Zander
RZMO> Bryology Group
RZMO> Missouri Botanical Garden
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RZMO> St. Louis, MO 63166-0299
RZMO> richard.zander at mobot.org <mailto:richard.zander at mobot.org>
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RZMO> Bryophyte Volumes of Flora of North America:
RZMO> Res Botanica:
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