Bibliographic record
Abstract
Yellow birch (Betula alleghaniensis) is a signature species of Maine’s Acadian forest and the Provincial tree of Quebec, naturally growing in mixture with red spruce and balsam fir on mesic lower-elevation sites. Historically, it comprised 10-15% of presettlement old-growth forests and currently maintains a merchantable density similar to sugar maple in the beech-birch-maple forest type, representing about 11% of total tree density. Economically, yellow birch is one of Maine's most valuable hardwoods, historically used for interior trim and flooring, and notably for "mosquito bombers" during World War II. It remains a staple species in North America's hardwood veneer industry, with high market prices for quality logs. The species' abundance is limited by its specialized regeneration ecology; its small, wind-dispersed seeds require specific microsites with dependable moisture and partial sunlight, such as bare mineral soil or rotten wood, often found in large tree-fall gaps. This can lead to "stilt rooting" as original substrates decay. Silviculturally, yellow birch is considered "high-maintenance" due to low seed viability, shallow roots, and susceptibility to deer browse. While mechanical scarification has been attempted to improve regeneration, results are mixed, sometimes promoting competing vegetation and destroying advance growth of maple. The species is also prone to epicormic branching and has experienced mysterious dieback events.
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.
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 | 0.002 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.001 |
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".