Orthothecium lapponicum: a disjunctive Circum-Holarctic species
Bibliographic record
Abstract
Orthothecium lapponicum, considered by many authors as a mere infraspecific taxon of the widespread O. chryseon, was subsequently shown to be a morphologically distinct species.Initially known only from the mountains of Northern Sweden, subsequent investigations revealed its occurrence also in Spitsbergen.Here we document its further distribution on Ellesmere Island in Canada, and in the Verkhoyansk and Chersky Mountains of Yakutia.Molecular phylogenetic analysis of the nuclear ITS region showed that specimens of Orthothecium lapponicum from Europe, Asia and North America are fully identical and highly supported as a discrete clade in Bayesian and maximum parsimony analyses, supporting its status as a good species.Descriptions and illustrations are given in order to facilitate further discovery of the species, although the very restricted range of the species seems to be real, and not simply an artifact of undercollecting or lack of recognition. РезюмеOrthothecium lapponicum еще недавно рассматривался многими авторами лишь как внутривидовой таксон широко распространенного O. chryseon, однако впоследствии было показано, что это хорошо отграниченный по морфологическим признакам вид.Он был изначално известен только из горных районов Северной Швеции, а затем найден также на Шпицбергене.В данной статье мы приводим находки этого вида на о.Элсмир в Канаде и в горных системах Верхоянья и Черского в Якутии.Молекулярно-филогенетический анализ последовательностей ДНК ядерного участка ITS показал, что образцы Orthothecium lapponicum из Европы, Азии и Северной Америки полностью идентичны по этому маркеру и образуют хорошо поддержанную кладу в деревьях, построенных по методу Байеса и максимальной парсимонии, что подтверждает самостоятельный статус этого вида.Приведены описание и иллюстрации вида для того, чтобы помочь выявить дополнительные образцы, хотя, по-видимому, редкость находок этого вида отражает его реальное распространение, а не является артефактом недостаточных сборов или нераспознанности.
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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 | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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".