The Temporal Significance of Bioturbation in Backshore Deposits: Waterside Beach, New Brunswick, Canada
Bibliographic record
Abstract
Abstract This paper provides an estimate of the temporal nature and environmental implications of bioturbation in upper-foreshore and backshore deposits resulting from the burrowing activity of talitrid amphipods at Waterside Beach, Bay of Fundy, Canada. Short-term preservation potential is assessed by comparing shore-normal variations in burrow morphologies and densities to grain-size distribution, and hydraulic and eolian processes. The intensity and distribution of burrowing is linked to depositional environment and provides a temporal framework for bioturbation indices in ancient upper-foreshore and backshore deposits. Bioturbation in foreshore and backshore successions provides a means for predicting short-term, autocyclic processes in the rock record, in that: (1) the initial occurrence of burrowing marks the transition from the foreshore to the backshore, and (2) the degree of bioturbation may be used to predict depositional rates and processes. At Waterside, bioturbation indices (BI) of two or less indicate a single season of colonization; BIs of two (upper end of range) and higher suggest multiple seasons of colonization. A high BI may indicate that the backshore environment was protected from wave reworking or erosion (particularly during storms) and/or was subjected to minor eolian sedimentation.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 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".