Post‐glacial vegetation migration in conterminous Montréal Lowlands, southern Québec
Bibliographic record
Abstract
Aim This work examines the post‐glacial plant migration patterns at a regional scale. Location St Lawrence lowlands and adjacent highlands, southern Québec. Methods The post‐glacial plant dynamics in the St Lawrence lowlands are reconstructed based on fifteen pollen diagrams and seventy‐four radiocarbon dates. Results Migratory trends are shown for the first established plant formations (tundra, boreal forest and mixed forest), while the subsequent onset of deciduous forests shows no particular pattern. Main conclusions Several factors are involved in this contrasting behaviour. First, the palaeogeographical context, principally determined by the location of the ice sheet and Champlain Sea, played a major role during the initial stages. The Champlain Sea constituted a barrier to seed dissemination between the Appalachians and Laurentians, favouring the development of Populus instead of Picea in the latter region. Secondly, ecological processes partly determined differences in establishment between conifer‐dominated forests and deciduous forests. The former resulted from the successive onset of dominant species ( Picea and Abies ), while the deciduous forest stages resulted from domination shifts between already established taxa. Thirdly, physiographic traits explain local departures to the general migratory pattern. The major departure comprises of the onset of tundra, boreal forest and mixed forest on Monteregian hills (most of which constituted islands within Champlain Sea) before their establishment in Appalachians.
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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 | 0.001 | 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".