The role of microhabitat for bryophyte establishment in reclamation of boreal wetlands
Bibliographic record
Abstract
Abstract Minerogenous peatlands that accumulate deep deposits of organic matter (fens) were an important part of the pre-disturbance landscape across Alberta’s oil sands mining area. Bryophytes occupy 80–100% of the ground layer in these site types and form an important part of the accumulated organic matter. Bryophytes are small plants that occur in microhabitats that are an integral part of the surrounding plant community. The objective of this paper is to evaluate the establishment of bryophytes at an experimental wetland (Sandhill Wetland-SHW) by assessing the changing vegetation and substrate regimes over eight years after wet-up. Included in this analysis is an account of the ground layer flora between 2014 and 2021 along with evaluation of associated environmental factors. At SHW, a number of peatland bryophytes initially established in numerous areas across the wetland. However, in subsequent years increasing water tables with expanding Typha -dominating areas, high sedge productivity along with increasing vascular plant cover, and increasing sodicity have reduced the microhabitats available for bryophytes, with the result being a much-diminished set of peatland bryophyte species. We suggest that future reclamation designs for fens should include microhabitats for bryophytes, as bryophytes are foundational species and integral to fen development. In comparison, reclamation designs for non-peat forming ecosystems that do not have abundant bryophytes, such as marshes and saline wetlands, do not require these microhabitat conditions. Installing a recently harvested peat substrate appears to provide suitable conditions for early establishment of bryophytes.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| 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 | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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 source (direct Gemma or distilled Codex), 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".