Distribution of manganese bacteria in the sediment cores from the Canada Basin and the Chukchi Sea
Bibliographic record
Abstract
The distribution of Manganese bacteria(MnB)in 10 sediment cores from the Canada Basin and the Chukchi Sea were analyzed by the methods of MPN and plate culture.The cores were sliced in 1 cm intervals from 0~10 cm and at 2 cm intervals below 10 cm on board as subsamples.Retrievability of MnB cultivated in both 4℃ and 25℃ ranged from non-detectable levels(ND)to 3.3×108 CFU·g-1 of wet sample.The occurrence percentages and average numbers of MnB cultivated at 4℃ and 25℃ were 77.78%,5.60×106 CFU·g-1 wet samples,and 86.03%,7.91×106 CFU·g-1 wet samples,respectively.The contents of MnB in sediment cores were higher than those in sediment from the deep Pacific Ocean or in water from Alaska Lake,similar to the results reported in water from the Carlsberg Ridge in the Indian Ocean.The result showed that a tendency of the MnB content increasing from low latitude to high latitude,or from the shallower continental shelf to deeper basin in the south of 78 N.From the surface to deeper sediment,the content of MnB in sediment changed irregularly,depending on the sedimentary environment.It seems that the variability of MnB content was larger at 25℃ than at 4℃.
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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 | 0.002 | 0.002 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 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".