On the vertical zonation of hair lichens (Bryoria) in the canopies of high-elevation oldgrowth conifer forests
Bibliographic record
Abstract
Goward, Trevor.2003.On the vertical zonation of hair lichens (Bryoria) in the canopies of high-elevation oldgrowth conifer forests.Canadian Field-Naturalist 117(1): 39-43.Three vertical zones of Bryoria abundance are recognized in the canopies of mid-and upper-elevation oldgrowth conifer forests in southern inland British Columbia.Zone A, with virtually no Bryoria, is restricted to the lower trunk and lowermost branches, where its upper boundary (the "A/B threshold") corresponds roughly to the maximum settled depth of the winter snowpack.Zone B is located directly above Zone A, and supports Bryoria in variable amounts ranging from negligible to heavy; its upper boundary is defined by an abrupt increase in Bryoria at the "B/C threshold".Above this is Zone C: a well-ventilated region supporting maximum Bryoria loadings consisting predominantly of the nonsorediate species B. fremonti, B. pseudofuscescens, and Nodobryoria oregana.Bryoria loadings in Zone B benefit from litterfall from Zone C, in the absence of which, Zone B would predominantly support only the sorediate species B. fuscescens and B. glabra.Winters of exceptionally deep snow cause marked upward shifts in the A/B threshold, presumably resulting in reductions in the early-winter availability of Bryoria to Mountain Caribou.This reduced forage is expected to prolong early-winter migrations to lower elevations, where Caribou depend on lichen-rich oldgrowth forests.The existence of such forests is hypothesized to be integral to the long-term maintenance of healthy caribou populations.
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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 | 0.001 |
| 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 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| 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".