Genetic variation and structure in endangered populations of<i>Sphagnum palustre</i>L. in Italy: a molecular approach to evaluate threats and survival ability
Bibliographic record
Abstract
The conservation status of endangered Italian populations of the peatmoss Sphagnum palustre L. was evaluated through the study of their intraspecific genetic variation and structure. One-hundred-thirty-eight shoots from four populations were analyzed by 35 inter-simple sequence repeat (ISSR) loci. Molecular diversity indices highlight a general low level of variation, which is higher in centre-northern populations than in the southernmost one. AMOVA indicates that most variation is partitioned among populations, supporting a low level of gene flow and a severe isolation among them (F ST = 0.7071–0.9198; Nm = 0.106). Mantel test gave a significant correlation (0.8634, P = 0.0083) between genetic and geographical distances. A strong association among loci suggests that recombination due to sexual reproduction contributes poorly to genetic variation observed, supported by the lack of sporophytes in the study areas. Both experimental results and theoretical predictions suggest a concrete risk of local extinction for the studied populations, further increased by fragile habitats hosting the species in Italy. The southernmost population is the most threatened, due to combined effects of lower genetic variation and geographic isolation.
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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 | 0.000 |
| 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".