Molecular-assisted alpha taxonomy of the genus <i>Rhodymenia</i> (Rhodymeniaceae, Rhodymeniales) from Australia reveals overlooked species diversity
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Bibliographic record
Abstract
A previously published DNA barcode survey of red macroalgae in Australia revealed significant cryptic and overlooked diversity for the genus <i>Rhodymenia</i> with recognition of <i>R. novahollandica, R. prolificans, R. stenoglossa, R. wilsonis</i> and an additional four uncharacterized genetic species groups. Since that study, increased sampling effort in Australia has warranted reassessment and reinvestigation of the number of genetic species groups attributed to <i>Rhodymenia</i> and their respective taxonomic affiliations. Using molecular-assisted alpha taxonomy employing the DNA barcode (COI-5P), the present study resolved 188 Australian specimens in 12 genetic species groups assignable to the genus <i>Rhodymenia</i>. Four of these groups were attributed to the previously recognized species (above), whereas some collections from Lord Howe Island were attributed to the New Zealand species <i>R. novazelandica</i>, expanding its biogeographic range. The following seven genetic groups were inconsistent with existing species of <i>Rhodymenia</i> and established as novel taxa: <i>R. compressa</i> sp. nov., <i>R. contortuplicata</i> sp. nov., <i>R. gladiata</i> sp. nov., <i>R. insularis</i> sp. nov., <i>R. lociperonica</i> sp. nov., <i>R. norfolkensis</i> sp. nov. and <i>R. womersleyi</i> sp. nov. Although morphological and biogeographic features were adequate for distinguishing some species of <i>Rhodymenia</i> from Australia, DNA sequencing in combination with morphology and biogeography provided the most reliable means of identification.
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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 | 0.001 | 0.001 |
| 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 it