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Quantifying the structural relationship of leaf mass and petiole width of extant ferns : developing a proxy for fossil applications.

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dc.contributor.advisor Peppe, Daniel J.
dc.contributor.author Lemons, Casee R.
dc.date.copyright 2012-05
dc.identifier.uri http://hdl.handle.net/2104/8440
dc.description.abstract This study developed a biomechanical model of leaf trait relationships in fern leaves. A common plant relationship is positive covariance between petiole width (PW) and leaf mass (LM). When LM and PW are area-normalized, petiole width measurements can predict leaf mass per area (LMA). The leaf economics spectrum shows that LMA covaries with other key plant traits, including leaf life span, photosynthetic rates, and palatability to herbivores. These correlations make LMA predictions a powerful tool in paleoreconstruction. Two hypotheses formed the basis of this study: (1) all levels of fern leaf hierarchy will hold the same allometric leaf trait relationships, and (2) previously established biomechanical plant models can be used as a paleoecological proxy for ferns. Results show that allometric relationships are not consistent within all levels of fern hierarchy, and a distinctly different model is needed to be used as a paleoecological proxy for ferns. en_US
dc.publisher en
dc.rights Baylor University theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. Contact librarywebmaster@baylor.edu for inquiries about permission. en_US
dc.subject Ferns. en_US
dc.subject Leaf economics. en_US
dc.title Quantifying the structural relationship of leaf mass and petiole width of extant ferns : developing a proxy for fossil applications. en_US
dc.type Thesis en_US
dc.description.degree M.S. en_US
dc.rights.accessrights Worldwide access. en_US
dc.rights.accessrights Access changed 1/13/14.
dc.contributor.department Geology. en_US
dc.contributor.schools Baylor University. Dept. of Geology. en_US


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