Status of the Northern Riffleshell, Epioblasma torulosa rangiana (Bivalvia: Unionidae), in Ontario and Canada
Bibliographic record
Abstract
The Northern Riffleshell, Epioblasma torulosa rangiana, is a small, colourful, sexually-dimorphic freshwater mussel that lives in highly-oxygenated riffle areas of rivers and streams.Its host fish in Canada is unknown.It has suffered dramatic declines in North America over the past century, with the current distribution representing a range reduction of more than 95%.It was listed as Endangered under the U.S. Endangered Species Act in 1993.Causes of its decline include the Zebra Mussel, Dreissena polymorpha, which has infested a large portion of the subspecies' former range, and agricultural impacts.All rivers where the subspecies still occurs are located in areas of intense agriculture and forestry, which makes them susceptible to siltation and runoff of agricultural chemicals.The distribution of E. ft.rangiana in Canada is now restricted to the middle reaches of the Sydenham and Ausable rivers in southwestern Ontario.The Sydenham River population is one of only three populations in North America that still show evidence of successful reproduction, hence the preservation of this population is important for the global survival of the subspecies.It is predicted that E. t. rangiana will become globally extinct within 10 years unless measures are taken soon to protect it.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.038 | 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".