Root and leaf production, mortality and longevity in response to soil heterogeneity
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
Summary Patches of fertile soil support concentrations of roots, but whether this reflects increased production or increased longevity is not known. We examined the production and longevity of roots of the grass Festuca rubra in response to soil heterogeneity. We also explored the extent to which root dynamics reflect shoot responses to heterogeneous soils. Root and leaf dynamics were followed in pots of heterogeneous or homogeneous soils containing the same total amount of nutrients. Digital minirhizotron images of roots and leaves were collected weekly. Root length was significantly greater in homogeneous than heterogeneous soils. This was caused by significantly larger root production but shorter life span. In contrast, soil heterogeneity had no effect on leaf production or longevity. Within heterogeneous pots, root and leaf production were strongly concordant, both being significantly greater in fertilized patches. More roots died in fertilized patches, but leaf mortality was not affected. Longevity of neither roots nor leaves was affected by the location of a fertile patch. Spatial variation in production of roots and shoots in response to nutrient patches was concordant. Roots and shoots, however, showed independent responses to the presence of within‐pot heterogeneity. A decrease in total root length in heterogeneous soils was a counterintuitive result of decreased production and increased longevity.
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.
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| 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 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| 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 it