Population Structure of Three Dominant Sedges under Muskox Herbivory in the High Arctic
Bibliographic record
Abstract
We investigated population structure of Carex aquatilis ssp. stans, Carex membranacea, and Eriophorum angustifolium ssp. triste in ungrazed and grazed (by muskoxen) high arctic sedge meadow vegetation. Age structure, density, biomass, growth, and reproduction of tillers were compared between sites in 1995 and 1996. Tillers were considerably older in ungrazed vegetation relative to grazed vegetation. The density and biomass of C. stans were significantly greater in grazed vegetation than in ungrazed vegetation, whereas the density of C. membranacea and E. triste was the same but the biomass was lower relative to the ungrazed meadows. The grazed plants of all species reproduced earlier, but no seedlings were found in grazed vegetation, in contrast to ungrazed vegetation. Carex stans appears to gain competitive advantage over the other two species in grazed vegetation. This may be due to the larger belowground biomass, the high phenotypic plasticity in rhizome lengths and more persistent rhizome connections. E. triste may be the least buffered against grazing due to its lower belowground biomass and the early disintegration of rhizomes. On the other hand, E. triste allocates more to sexual reproduction than the two other 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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| 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) | 0.015 | 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".