Impact of erect shrubs on the cover and fruit productivity of berry species in subarctic Canada
Bibliographic record
Abstract
Berry species are an important source of food in late summer for resident and migrant animals, and an integral part of the diet and culture of Indigenous Peoples. This study investigated how the presence of erect shrub patches (cover > 25%) affected the occurrence, cover, and fruit productivity of Vaccinium uliginosum L., Vaccinium vitis-idaea L., and Empetrum nigrum L. in the vicinity of Umiujaq, a subarctic community that has experienced a rapid increase in erect shrub cover since the 1990s. Our results indicated that berry species are ubiquitous in the area although the likelihood of occurrence is nearly three times lower under shrub patches. The cover and fruit productivity of V. uliginosum and E. nigrum diminished under erect shrub patches and this effect was more pronounced at the center of patches. In contrast, the cover and fruit productivity of V. vitis-idaea was not influenced by the presence of erect shrub patches. Finally, erect shrub patches delayed fruit ripening for V. uliginosum and V. vitis-idaea but differences could not be measured for E. nigrum. This study suggests that observed and forecasted increases in erect shrub cover in the Arctic may have widespread negative impacts on berry species.
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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".