Degradation of Wood in Standing Lodgepole Pine Killed by Mountain Pine Beetle
Bibliographic record
Abstract
Lodgepole pine is widely distributed throughout the Pacific Northwest and is an important commercial species.Although outbreaks of mountain pine beetle can kill extensive areas of pine stands, little attention was paid to postmortality rate of wood quality and quantity deterioration until the most recent outbreak, which because of its unprecedented size has resulted in extensive salvage harvesting.We used dendrochronology to determine the exact year of mortality and destructive sampling to quantify change in wood characteristics with time.We also estimated the fall-down rate of dead trees.Most trees did not start to fall until 8 yr postmortality.We found that change in wood moisture content was the main driver behind changes in wood properties.Dependent variables included checking (number and depth), blue-stain depth, saprot, and damage caused by wood borers and were explained by a small collection of biophysical variables.Biogeoclimatic unit and soil moisture regime were not important predictors of decay and degrade, except for development of saprot at the base of trees.Wood quality significantly changed within the first 1-2 yr postmortality and varied with position along the stem followed by a period of relative stability.
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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 | 0.002 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.004 |
| Science and technology studies | 0.000 | 0.008 |
| 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 | 0.000 |
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".