Temporal determinants of fungal community assembly
Abstract/Contents
- Abstract
- Factors related to the temporal scale of fungal community assembly remain poorly defined. In this dissertation I explore two temporal determinants of fungal community assembly, ecosystem age and species arrival order. First, I explore the effect of ecosystem age using an observational study of the fungi associated with the roots of an ericaceous plant, Vaccinium calycinum, across a 4.1 myr soil chronosequence in Hawaii. I show that soil development promotes greater diversity in ericaceous root-associated fungal communities and that soil-age related nutrient limitation facilitates colonization of ericaceous roots by a greater diversity of non-mycorrhizal fungi in both young and old soils. Second, I use a laboratory microcosm study of root-associated fungi to show that fungal species pools from older ecosystems include species that are more likely to coexist within the roots of a single seedling. Finally, I use a community of wood-decomposing fungi in a microcosm experiment to show that the interactive effects of top-down (grazing) and bottom-up (nutrient availability) forces determine the importance of immigration history (i.e., priority effects) for community composition and function. Taken together these results demonstrate that temporal processes occurring at both short and long time scales can be important determinants of fungal community assembly.
Description
| Type of resource | text |
|---|---|
| Form | electronic; electronic resource; remote |
| Extent | 1 online resource. |
| Publication date | 2017 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Associated with | Leopold, Devin R |
|---|---|
| Associated with | Stanford University, Department of Biological Sciences. |
| Primary advisor | Fukami, Tadashi, 1972- |
| Thesis advisor | Fukami, Tadashi, 1972- |
| Thesis advisor | Mordecai, Erin |
| Thesis advisor | Peay, Kabir |
| Thesis advisor | Vitousek, Peter Morrison |
| Advisor | Mordecai, Erin |
| Advisor | Peay, Kabir |
| Advisor | Vitousek, Peter Morrison |
Subjects
| Genre | Theses |
|---|
Bibliographic information
| Statement of responsibility | Devin R. Leopold. |
|---|---|
| Note | Submitted to the Department of Biological Sciences |
| Thesis | Thesis (Ph.D.)--Stanford University, 2017. |
| Location | electronic resource |
Access conditions
- Copyright
- © 2017 by Devin Robert Leopold
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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