Reconstructing Paleoenvironmental Change in Lake Scugog (Ontario, Canada) Using Subfossil Diatoms Preserved in Lake Sediments
Bibliographic record
Abstract
Lake Scugog is a shallow impoundment in Ontario that is facing multiple stressors, especially eutrophication and climate change. This thesis used paleolimnological approaches to reconstruct diatom assemblage responses to climate change and anthropogenic stressors in the east and west basins of Lake Scugog over the last ~150 years, and in the west basin over the Holocene. The east basin experienced a diatom assemblage transition from the heavy, tychoplanktonic Aulacoisera to the small, buoyant Cyclotella likely indicating increased thermal stratification due to climate change, and an increase in small, benthic Fragilaria potentially corresponding to reduced ice cover. In Port Perry Bay, where urban development is most concentrated, small, benthic Fragilaria became dominant following the construction of the Lindsay Dam, and no other diatom assemblage changes occurred over the last ~150 years. The Holocene paleoenvironmental history of Port Perry Bay was similar to other records of Holocene climate from southern Ontario.
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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 | 0.002 | 0.003 |
| Science and technology studies | 0.002 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".