Occurrence of Atlantic Sturgeon in the St. Marys River, Georgia
Bibliographic record
Abstract
Abstract The Atlantic Sturgeon Acipenser oxyrinchus oxyrinchus is an anadromous species that historically has been found along the Atlantic coast of North America from maritime Canada to the St. Johns River, Florida. Decades of overharvest and habitat loss has resulted in range-wide population declines, and in 2012 the species was listed under the U.S. Endangered Species Act as five Distinct Population Segments (DPSs). The extirpation of several populations, including some in the South Atlantic DPS, was identified as an important consideration in the final determination to list this DPS as endangered. In the St. Marys River, Georgia, the second-most southern river within their historical range, Atlantic Sturgeon were thought to have been extirpated for several decades. The objectives of this study were to document the seasonal occurrence of Atlantic Sturgeon in the St. Marys River and to document any evidence of an extant population in the river. During the summers of 2013–2016, we set 533 nets and captured a total of 25 Atlantic Sturgeon, including several age-1, river-resident juveniles. Genetic analyses indicated that these juveniles were descendants of a remnant population that is distinct but more closely related to other populations within the South Atlantic DPS than those in more northern rivers. Using acoustic telemetry, we monitored the movements and habitat use of 14 individual sturgeon in the St. Marys River estuary. Acoustically tagged juveniles resided mainly within the St. Marys River main stem, but we did detect a number of adult migrants using Cumberland Sound on a seasonal basis. Our results indicate that Atlantic Sturgeon persist in the St. Marys River and that the estuary also provides seasonally important habitat for migrating adults from other populations.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 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 teacher head, 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".