Forest floor carbon dioxide fluxes within an upland‐peatland complex in the Western Boreal Plain, Canada
Bibliographic record
Abstract
Abstract This study examined the midday (10:00 to 16:00) growing season (April to October) surface cover CO 2 relationships with different canopy closures in a forested upland–peatland–pond complex in the Western Boreal Plain (WBP), north‐central Alberta, Canada. Large differences were observed among the forest floors of landscape units with different canopy covers with respect to midday total respiration [( R tot ) = vegetation respiration ( R veg ) + soil respiration ( R soil )] and gross ecosystem production (GEP), and the seasonal pattern of GEP and R tot . Highest rates of R tot followed the general progression of riparian > upland > open peatland > covered peatland, with high R soil contributions. Strong correlations were observed between C:N, soil temperature, moisture and R tot . Photosynthetic active radiation (PAR) controlled the GEP, which was highest in the open and covered peatland. GEP and R tot were highest in the middle of the growing season when soil and air temperatures were warmest; in addition R veg contributed more to R tot during this time. However, R soil dominated the flux. This study demonstrated that controlling environmental factors on CO 2 exchange cannot necessarily be extrapolated among land cover units within a sub‐humid region, such as Canada's WBP. In addition, forest floors of different land cover units, and microtopography should be taken into account when discussing understory contributions to CO 2 exchange. Copyright © 2008 John Wiley & Sons, Ltd.
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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".