Bentho-pelagic distribution of early stages of softshell clams (<i>Mya arenaria</i>) in tidally contrasted regimes
Bibliographic record
Abstract
We examined the settlement and recruitment of the softshell clam (Mya arenaria L., 1758) in two tidally contrasted regimes in eastern Canada. The Bay of Fundy (strong tides) and the Northumberland Strait (weak tides) were used to describe the distribution of planktonic larvae and early settlers. These distributions were compared with those of juvenile and adult forms observed in the same intertidal habitats. Results showed that the abundances of planktonic stages were the same at all tidal levels except in one site of the Bay of Fundy. Early settlers varied according to a site × intertidal level interaction. Juveniles and adults also varied according to a similar interaction, most being in the upper intertidal level. Simple linear regressions demonstrated that no relationship exists between the number of planktonic larvae and the number of early settlers. The only significant relationship observed was the one between the number of juveniles (1–5 mm size class) and the number of adults in one of the Northumberland Strait sites. Our results show, through the high spatial resolution and wide range of spatial scales covered by the study, that the dominant regional tidal regime does not have an effect on the distribution of the softshell clam. Local hydrodynamic effects appear to drive the intertidal distribution of the softshell clam life-cycle stages.
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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 | 0.000 |
| 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) | 0.001 | 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".