Natural recovery of vegetation on reclamation stockpiles after 26 to 34 years
Bibliographic record
Abstract
Stockpiling of soils is essential for reclamation after oil sands mining, and can influence revegetation through degradation of seed viability and soil quality. Three peat-mineral stockpiled areas in upland boreal forest, aged 26 to 34 years, were assessed for effects on soil, vegetation, and successional status to study the natural recovery of vegetation. Six upland (five native, one non-native) and one lowland native species community types were identified where non-vascular had more communities than vascular plants. Upland boreal species that were likely not present in the soil seed bank, colonized the sites relatively quickly with a plant community of early to mid successionals, including persistence of a lowland species (Amblystegium serpens) and non-natives. Presence of a non-native community (Melilotus officinalis) 26 to 34 years after reclamation can be concerning. Stockpiled soil texture (clay) and tall shrub stem density were most influential on plant community development. Stem density (DBH > 5 cm), self-thinning of early successional species (Salix, Betula papyrifera), and presence of climax species (Picea glauca) resembled the successional trend of natural boreal forests in the region. Results from this study suggest natural recovery of upland boreal forest on lowland peat substrate is possible and can support evolving plant communities.
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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".