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Historical and phylogenetic constraints on the incidence of entire leaf margins: insights from a new South American model

2010; Wiley; Volume: 20; Issue: 3 Linguagem: Inglês

10.1111/j.1466-8238.2010.00595.x

1466-8238

Luis Felipe Hinojosa, Fernánda Pérez, Aurora Gaxiola, Isabel Sandoval,

Evolution and Paleontology Studies

Global Ecology and BiogeographyVolume 20, Issue 3 p. 380-390 Historical and phylogenetic constraints on the incidence of entire leaf margins: insights from a new South American model Luis Felipe Hinojosa, Corresponding Author Luis Felipe Hinojosa Laboratorio de Paleoecología, Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425 Ñuñoa, Santiago, Chile Instituto Milenio de Ecología y Biodiversidad, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425 Ñuñoa, Santiago, Chile Luis Felipe Hinojosa, Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, Casilla 653, Ñuñoa, Santiago, Chile. E-mail: lfhinojosa@abello.dic.uchile.clSearch for more papers by this authorFernanda Pérez, Fernanda Pérez Instituto Milenio de Ecología y Biodiversidad, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425 Ñuñoa, Santiago, Chile Center for Advanced Studies in Ecology and Biodiversity (CASEB), Departamento de Ecología, Pontificia Universidad Católica de Chile, CP 6513677, Santiago, ChileSearch for more papers by this authorAurora Gaxiola, Aurora Gaxiola Instituto Milenio de Ecología y Biodiversidad, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425 Ñuñoa, Santiago, Chile Center for Advanced Studies in Ecology and Biodiversity (CASEB), Departamento de Ecología, Pontificia Universidad Católica de Chile, CP 6513677, Santiago, ChileSearch for more papers by this authorIsabel Sandoval, Isabel Sandoval Laboratorio de Paleoecología, Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425 Ñuñoa, Santiago, Chile Instituto Milenio de Ecología y Biodiversidad, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425 Ñuñoa, Santiago, ChileSearch for more papers by this author Luis Felipe Hinojosa, Corresponding Author Luis Felipe Hinojosa Laboratorio de Paleoecología, Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425 Ñuñoa, Santiago, Chile Instituto Milenio de Ecología y Biodiversidad, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425 Ñuñoa, Santiago, Chile Luis Felipe Hinojosa, Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, Casilla 653, Ñuñoa, Santiago, Chile. E-mail: lfhinojosa@abello.dic.uchile.clSearch for more papers by this authorFernanda Pérez, Fernanda Pérez Instituto Milenio de Ecología y Biodiversidad, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425 Ñuñoa, Santiago, Chile Center for Advanced Studies in Ecology and Biodiversity (CASEB), Departamento de Ecología, Pontificia Universidad Católica de Chile, CP 6513677, Santiago, ChileSearch for more papers by this authorAurora Gaxiola, Aurora Gaxiola Instituto Milenio de Ecología y Biodiversidad, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425 Ñuñoa, Santiago, Chile Center for Advanced Studies in Ecology and Biodiversity (CASEB), Departamento de Ecología, Pontificia Universidad Católica de Chile, CP 6513677, Santiago, ChileSearch for more papers by this authorIsabel Sandoval, Isabel Sandoval Laboratorio de Paleoecología, Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425 Ñuñoa, Santiago, Chile Instituto Milenio de Ecología y Biodiversidad, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425 Ñuñoa, Santiago, ChileSearch for more papers by this author First published: 06 October 2010 https://doi.org/10.1111/j.1466-8238.2010.00595.xCitations: 36Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat ABSTRACT Aim The relationship between the proportion of species with an entire leaf margin (pE) and mean annual temperature (MAT) is one of the most powerful tools for estimating palaeotemperatures. However, phylogenetic and phytogeographic constraints on this relationship have remained unexplored. Here we investigate the pE–MAT relationship for modern floristic assemblages from southern South American forests, assess its conformity to other models and test for the existence of historical constraints on pE–MAT models. Location South America. Methods We used samples from 30 sites located in Chile between 32° and 44° S to test for a pE–MAT relationship and compared it with four regional models. We assessed the reliability of these models for predicting MAT from instrumental records in eight modern temperate-forest localities in Chile. Additionally, palaeotemperatures for Cenozoic fossil floras were estimated. To assess historical constraints in pE, we measured the phylogenetic signal in leaf margin type and the association between leaf margin and phytogeographic affiliation, defined by the distribution of genera. Results We found a significant pE–MAT relationship for Chilean forest species that differed from Australia and Northern Hemisphere models, but not from tropical South America (TSA). Temperatures for southern South American localities predicted from the new regional model – combining Chilean and TSA datasets – were more accurate than those from previous models. We also showed that leaf margin type has a strong phylogenetic signal, which was further confirmed by the highly significant effect of phytogeographic element on leaf margin type. Main conclusions Differences between the Chilean and other regional models are explained by historical legacy, as Chilean leaf margin types are strongly affected by phylogenetic closeness and phytogeographic elements. We highlight that leaf margin analyses should be conducted within the context of a flora with a shared history. Thus, we propose a new model for South America to estimate palaeotemperatures for regional fossil floras. Citing Literature Supporting Information Appendix S1 Chilean dataset for both leaf margin and biogeographic analysis in 30 localities of Appendix 1. Filename Description GEB_595_sm_Appendix_S1.pdf67.4 KB Supporting info item Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article. Volume20, Issue3May 2011Pages 380-390 RelatedInformation