<i>Plocamiomonas psychrophila</i> gen. et sp. nov. (Pelagophyceae, Heterokontophyta), an Arctic marine nanoflagellate characterized by microscopy, pigments and molecular phylogeny
Bibliographic record
Abstract
During a field campaign in Baffin Bay (June, 1998), a sample dominated by small yellow brown biflagellates was collected from a small pocket of liquid water on the sea ice and established into a unialgal culture. Later it was given strain number CCMP2097 and deposited at the NCMA collection. Growth experiments over a range of temperatures and salinities indicated adaptation to variable Arctic conditions. This strain was studied here using light and transmission electron microscopy, HPLC for characterization of photosynthetic pigments and the relationship to related taxa was elucidated from molecular phylogeny. This integrative approach resulted in suggesting Plocamiomonas psychrophila gen. et sp. nov. the first systematically named Arctic species of the Pelagophyceae. Plocamiomonas had two unequally long flagella and the spherical cells measured 7.5 µm in diameter. Novel morphological characters included (1) a swelling on the mature flagellum, (2) a bi-layered theca, thin elongated arm-like structures emanating from the cell surface and (3) a thin filament above the flagellar transition region. This set of morphological characters represented a novel combination for the Pelagophyceae and together with evidence from the phylogenetic position of Plocamiomonas and eight uncultured cold-water pelagophytes supported the proposal of a new order Plocamiomonadales and a new family Plocamiomonadaceae.
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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 | 0.000 | 0.001 |
| 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) | 0.000 | 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".