Leaf size, sapling allometry, and Corner’s rules: Phylogeny and correlated evolution in maples (<i>Acer</i>)

TitleLeaf size, sapling allometry, and Corner’s rules: Phylogeny and correlated evolution in maples (Acer)
Publication TypeJournal Article
Year of Publication1998
AuthorsAckerly DD, Donoghue MJ
JournalThe American Naturalist
Volume152
Pagination767-791
ISSN00030147
KeywordsBiological Sciences, Ecology & Evolutionary Biology
Abstract

We studied the evolution of leaf size, sapling canopy allometry, and related traits in 17 Acer species growing in the understory of temperate deciduous forests, using parsimony methods, randomization tests, and independent contrasts calculated on a phylogeny inferred from nuclear ribosomal internal transcribed spacer (ITS) sequences. Bivariate correlations and multivariate analyses indicated two independent suites of coevolving traits, and the results were robust over a range of alternative phylogenies. The first suite consisted of strong positive correlations among twig thickness, leaf size, inflorescence length, and branch spacing (Corner’s rules). Seed size and mature height were also weakly correlated with these traits. The second suite reflected aspects of sapling crown allometry, including crown size, stem diameter, and total leaf area, which appear to be related to shade tolerance. There was a weak negative correlation between sapling crown size and mature height, but no correl

URLhttp://search.ebscohost.com/login.aspx?direct=true&db=edsjls&AN=edsjls.10.2307.2463600&site=eds-live