Population dynamics and foraging of Sorex cinereus (masked shrew) in the boreal forest of eastern Canada
Bibliographic record
Abstract
The ecology of shrews is better understood in the boreal forest of Eurasia than in similar regions of North America. In this study, the abundance, reproduction, population structure, and diet of Sorex cinereus (Masked shrew) were analyzed in jack pine plantations in the southern boreal forest of eastern Canada over two years. Abundance of S. cinereus showed variations between years. The seasonal pattern of capture was unimodal with the peak occurring at the end of the summer. Breeding began in May or earlier with litter sizes averaging 6.7 ′ 0.3 (mean ′ SE) embryos per pregnant female. The breeding season was at least six months long (May-October). Two distinctive cohorts were identified. The spring cohort, primarily produced by overwintering shrews, had a higher reproductive value than the summer cohort because they may have reproduced in the year of birth. The summer cohort was produced by both overwintering individuals and shrews of the first generation in that year. Lepidopteran larvae (moth) were the primary food type in stomach contents of immature shrews, followed by coleopterans (beetles) and arachnida (spiders). The mean percentage volume of lepidopteran larvae in shrew stomach contents was similar between years, months, and sites. The patterns identified for S. cinereus are compared with those of the most common Eurasian shrew (Sorex araneus).
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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".