Benthic Protozoa and Metazoa living in deep anoxic and hydrogen sulfide conditions of the Black Sea: Direct observations of actively moving Ciliophora and Nematoda
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
This study was conducted to search for living fauna in seafloor sediments from nearly 300 m water depth in the outflow area of the Bosporus into the Black Sea. During our investigations we identified seven higher level meiobenthic taxa in the anoxic and sulfidic sediments at 296 m water depth: Gromiida, Ciliophora, Foraminifera (soft-shelled), Nematoda, Kinorhyncha, Harpacticoida and one taxonomically unknown form. Hence, these Black Sea sediments seem to be a natural habitat for some eukaryotes. Furthermore, direct microscopic observations of alive and actively moving fauna demonstrates the presence of two species of ciliates, one species of free-living nematodes, and one unknown organism. As evidence, the activity of these organisms was recorded with a video camera. This indicates that metazoa and protozoa can live in the Black Sea under these more extreme conditions. However, the environmental factors and the specific physiological and biochemical processes used by the benthic fauna to retain metabolic activity and facilitate survival under anoxic and sulfidic conditions are still unknown. As well the distribution of benthos as a whole and of the individual taxa in other sulfidic sediments of the Black Sea needs to be investigated. Nevertheless, the presented observation of alive benthic organisms opens new perspectives to study of metazoan and protozoan life in Black Sea sediments lacking oxygen and containing sulfide.
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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 | 0.001 | 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 | 0.001 |
| 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 it