Date of Award
2022
Document Type
Masters Thesis
Degree Name
M.S.
Organizational Unit
College of Natural Science and Mathematics, Biological Sciences
First Advisor
Anna Sher
Second Advisor
Eduardo González-Sargas
Third Advisor
Jon Velotta
Fourth Advisor
Patrick Martin
Fifth Advisor
Jing Li
Keywords
Functional trait, Intraspecific variation, Riparian, SLA, Specific leaf area, Urban-rural
Abstract
Specific leaf area (SLA) reflects a plant’s carbon investment per area and relates to generalized leaf economics spectrum growth strategies (LES). To fill gaps of knowledge about intraspecific SLA variation and why it is often inconsistent with the LES, we studied the response of two riparian tree species along the urban-rural gradient in Northeastern Colorado: an invasive, nitrogen-fixer with broad tolerances and a nitrogen-limited and shade-intolerant native. Despite these differences, the two species responded similarly, apart from the response to the urban-rural gradient, in which lower nitrogen in rural areas was associated with a more conservative strategy in the native species. We found that light, plant size and proximity to water in two dimensions all affected SLA, but interactions between these could even reverse their impact. These results suggest that global LES patterns are complex on a local scale and are subject to interactions not previously explored.
Publication Statement
Copyright is held by the author. User is responsible for all copyright compliance.
Rights Holder
Amanda Malone
Provenance
Received from ProQuest
File Format
application/pdf
Language
en
File Size
60 pgs
Recommended Citation
Malone, Amanda, "Environmental Gradients Impact Key Leaf Traits in Riparian Trees" (2022). Electronic Theses and Dissertations. 2127.
https://digitalcommons.du.edu/etd/2127
Copyright date
2022
Discipline
Ecology, Plant sciences, Biology