Chloroplast haplotype diversity patterns in<i>Packera pauciflora</i>(Asteraceae) are affected by geographical isolation, hybridization, and breeding system
Bibliographic record
Abstract
Packera pauciflora (Pursh) Löve & Löve is a wide ranging alpine or subalpine species that is disjunct in three regions of North America: the northern Rocky mountains, QuebecLabrador, and the Sierra Nevada of California. It is one of two Packera species known to be self-fertile. We assessed intrapopulational chloroplast haplotype diversity (n) and haplotype nucleotide diversity ([Formula: see text]) and found it was lower and population structure (Φ st ), higher than all but one of the five other Packera species examined to date. In addition, distinct differences exist between populations from California and those from the Rocky mountains and eastern Canada. Our results suggest that geographical isolation, hybridization, and breeding system have all played a role in the formation of haplotype diversity patterns, and that, in spite of the wide disjunctions, the species is monophyletic.Key words: Asteraceae, cpDNA, haplotypes, Packera, phylogeography, self-fertility.
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 | 0.001 | 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 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".