Spatiotemporal dynamics of plant-soil-microbe interactions
- Understanding how communities assemble across space and time remains a fundamental ecological question. In this dissertation, I investigate how plants, soil, and microbes interact to shape the outcome of aboveground and belowground communities. To understand temporal dimensions of microbially mediated plant-soil feedback, I quantified how the strength of conspecific and heterospecific feedback changes over time in greenhouse experiments. Using molecular sequencing, I show that plant-associated microbial communities changes within a plant generation, depending on the initial microbial source. I then show that microbial community turnover between generations affects the coexistence outcomes of plant communities driven by natural gaps in growing seasons and litter decomposition. In the spatial dimension, I use spatially-explicit field data to show how plant and microbial community distribution varies in relation to soil nutrients. Using observations from forest dynamics plots, I show that mycorrhizal association drives the aggregation patterns of trees across a gradient of soil fertility, interacting with the dispersal mode of different species and age structure within each species. All together, my dissertation explores various temporal and spatial structures of plant--soil--microbe interactions and their role in shaping species diversity above- and belowground.
|Type of resource
|electronic resource; remote; computer; online resource
|1 online resource.
|Ou, Suzanne Xianran
|Degree committee member
|Stanford University, School of Humanities and Sciences
|Stanford University, Department of Biology
|Statement of responsibility
|Suzanne Xianran Ou.
|Submitted to the Department of Biology.
|Thesis Ph.D. Stanford University 2023.
- © 2023 by Suzanne Xianran Ou
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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