Paleoecologic Controls on Early Triassic Refugia Distribution
Bibliographic record
Abstract
The end-Permian extinction (~252 ma) was the largest extinction event to have occurred during the Phanerozoic, resulting in the elimination of up to 78% of marine genera. Recovery from such a catastrophic event did not occur until the Middle Triassic, likely owing to prolonged environmental stress. Many have speculated as to the process with which marine ecosystems recovered following this event. The development of marine refugia, sanctuaries to which organisms migrate during time of environment stress, is one hypothesis. The focus of this thesis is to examine the distribution of marine refugia during the end-Permian extinction. Geochemical and paleoecologic data suggest that mid-depth settings deposited under oxic conditions are conducive to the development of refugia, by offering relief from lethally hot sea surface temperatures. In contrast, geochemical and paleoecologic data collected from two open Panthalassic seamounts suggest that these settings are not conducive to the development of marine refugia, potentially due to decreases in immigration rates owing to the development of a temperature barrier between oceanic islands and the continental margin.
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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 | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 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".