I have not seen much discussion of this issue for many years. My suggestion to disprove my conclusion would be to develop a method to measure both small and large distances between landmarks with the same relative precision. That is, to use a very fine ruler on small measurements on short distances and a crude ruler on larger distances. I never attempted to do that as it did not seem to a very interesting experiment. For the data I reviewed, one of the authors of one of the original data sets admitted later that they should not have used the same calipers to measure the very shortest distances (distance between the nares of a relatively small bird) in their study.
F. James Rohlf Distinguished Professor, Emeritus and Research Professor Depts: Anthropology and Ecology & Evolution Stony Brook University On 2/22/2024 7:10:31 AM, Jacqueline Silviria <[email protected]> wrote: Good morning, Sokal (1976) [https://www.journals.uchicago.edu/doi/abs/10.1086/283127] and Rohlf et al. (1983) [https://www.jstor.org/stable/2408185] argued Kluge & Kerfoot's (1973) “phenomenon” of a positive correlation between interpopulational and intrapopulational variation was the result of statistical artifacts. However, Zelditch et al. (2012:279) [https://shop.elsevier.com/books/geometric-morphometrics-for-biologists/zelditch/978-0-12-386903-6] noted: …the hypothesis has re-emerged in the recent literature with more impressive empirical support; the dimension of greatest (genetic) variance is sometimes regarded as the evolutionary line of least resistance (e.g., Schluter, 1996 [https://academic.oup.com/evolut/article/50/5/1766/6870768]). But I have yet to see any positive or negative evaluation of Kluge-Kerfoot correlation in contemporary studies of morphometric LLRs. Usually when Kluge & Kerfoot (1973) is mentioned, it’s in passing with a note of Rohlf et al.’s (1983) criticism. So what is the mainstream consensus on the “phenomenon”? Thank you all in advance for your time. Jacqueline S. Silviria The Last King of the Jungle Department of Earth & Space Science University of Washington Seattle, WA, USA [email protected] [mailto:[email protected]], [email protected] [mailto:[email protected]] ResearchGate profile [https://www.researchgate.net/profile/J_Silviria] Twitter: @JSilviria Sent from my iPhone -- You received this message because you are subscribed to the Google Groups "Morphmet" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/morphmet2/Mailbird-a7811e80-ab91-4b0e-952e-d39270cd77ef%40stonybrook.edu.
