Secondary vegetation and floristic succession within a boreal aspen (<i>Populus tremuloides</i> Michx.) clearcut
Bibliographic record
Abstract
The composition and abundance of vascular plants within a boreal Populus tremuloides Michx. stand in west-central Alberta were assessed three, five, nine, and 20 years after clearcutting. Rapid re-establishment of Populus tremuloides and other species such as Amelanchier alnifolia (Nutt.) Nutt. ex M. Roemer and Rosa acicularis Lindl. occurred primarily in response to vegetative propagation. Some minor compositional variability occurred among the year 3 plots (n = 88), but they were considered members of the same plant community, with 88% of the plots undergoing similar developmental processes during the course of the study. Some dominant species substantially increased in canopy cover, although most species maintained a relatively consistent level of abundance over time. Floristic richness was similar in year 3 (64 species) and year 20 (62 species) with the survival of 52 initiating species in year 20. The variability in floristic richness included the invasion of 32 species and the extirpation of 34 species. Stand development over a 20-year period best fit a tolerance model of succession because of the rapid development of dominant species, the lack of a major understory composition change, and a similar degree of dominance concentration among species. Understory vegetation growth was constrained by overstory shading.Key words: plant community, tolerance model, secondary succession.
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How this classification was reachedexpand
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) | 0.000 | 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 teacher head, 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".