Seasonal occurrence of Atlantic sturgeon (Acipenser oxyrinchus oxyrinchus) in the St. Johns River, Florida
Bibliographic record
Abstract
The Atlantic sturgeon (Acipenser oxyrinchus oxyrinchus) is an anadromous species that historically occurred in the Atlantic Ocean along the North American coast from maritime Canada to the St. Johns River, Florida.A century of overharvesting and habitat loss has resulted in range-wide population declines, and in 2012 the species was listed under the U.S. Endangered Species Act.The extirpation of several individual populations-especially in the southeastern United States-was an important consideration in the final determination to list the species as endangered.Although historical data confirm the presence of Atlantic sturgeon in the St. Johns River, no recent evidence of a viable population exists for that river system.The primary objective of our study was to document the presence or absence of Atlantic sturgeon in the St. Johns River.During 2014-2015, we conducted nearly 200 hours of directed sampling with gill nets of different mesh sizes in the St. Johns River estuary but found no evidence of an extant population within the St. Johns River system.We did document the seasonal presence of several adult and subadult individuals that had been acoustically tagged by researchers working in other coastal systems, and that finding indicates that nonnatal individuals still use this estuary.
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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".