Bibliographic record
Abstract
Plants are inextricably linked to their environment. They can alter biotic and abiotic properties of soil ecosystems, which in turn can feed back to affect plant performance. My thesis explores this dynamic link between plants and soil at microevolutionary (within plant species) and macroevolutionary (between plant species) scales. In the microevolutionary half of my thesis I first test whether genetic variation, range-wide geographic trait clines and contemporary evolution in the focal plant species Oenothera biennis (Onagraceae) influence soil ecosystems. I found strong effects of plant genetic variation and evolution, but not geographic origin, on the structure of soil invertebrate communities and ecosystem processes such as soil respiration, litter decay and N mineralization rates. Finally, to understand how soil may be influencing plant evolution, I test whether variation in soil microbial communities can alter plant evolution across two common environmental stressors, competition and drought. I found that soil microbes drastically modify plant fitness, the expression of, and natural selection on flowering time. In the macroevolutionary half of my thesis I use a set of co-occurring plant species to investigate how evolutionary divergence over longer timescales influences plant-soil interactions. First, I conducted a multi-generational experiment to understand the drivers of plant–soil feedback (PSF) across 50 plant species. I found that evolutionary divergence and overall phenotypic similarity were poor predictors of soil feedback, however individual plant traits were strongly related to PSF. Next, I characterized the assembly and ecological function of the root microbiome across 30 plant species. Close plant relative exhibited high similarity in the diversity and composition of their root microbiota. Furthermore, patterns of root microbial recruitment among host plant species were related to PSF and plant drought tolerance. My thesis provides a unique evolutionary perspective on the reciprocal interactions between plants and soil.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".