An ecological classification of the ponderosa pine stands in the southwestern interior of British Columbia
Bibliographic record
Abstract
In this study 121 stands of Pinus ponderosa in the southwestern interior of British Columbia were examined. Floristic analyses of the stands were made by a system of visual estimates based upon scale values for dominance, abundance, and vigour assigned in the field. These values were later synthesized to produce a formula describing the role of each species in the community. Tables have also been included to show presence and fidelity values for the species of each association. Thus the floristic structure of each community becomes evident. The vigour of tree species was assessed by standard mensuration methods. Climatic data were obtained in some stands over a period of one year. Soil profiles of most of the stands were analysed for pH and texture. The Pinus ponderosa stands are here classified into the following principal communities: A. Pinus ponderosa zone: 1. Pinus — Purshia association with one related subassociation: 1a. Pinus — Aristida subassociation. 2. Pinus — Agropyron association with two related subassocia-tions: 2a. Pinus — Stipa subassociation. 2b. Pinus — Artemisia subassociation. 3. Pinus — Rhus association. B. Pseudotsuga zone: 4. Pseudotsuga — Pinus — Arctostaphylos association. 5. Pseudotsuga — Arctostaphylos — Calarnagrostis association. 6. Pseudotsuga — Calarnagrostis association. 7. Pseudotsuga — Symphoricarpos association. C. Azonal communities: 8. Populus -— Rosa — Cornus (alluvial) complex. All these communities are described individually; their successional relationships discussed; and some recommendations made regarding their utilization. The Agropyron and Arctostaphylos — Calamagrostis associations are thought to represent the climatic climax communities in their respective zones.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.002 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 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 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".