The community composition and biomass of pelagic ciliated protozoa in East African lakes
Bibliographic record
Abstract
The community composition and biomass of planktonic ciliates were studied in 17 tropical East African lakes varying from freshwater to saline, and from oligotrophic to eutrophic. The conductivity of the lakes varied from 207μS cm−1 to 70 000μS cm−1. Chlorophyll a concentration ranged from <5mg m−3 to >50mg m−3, while bacterial numbers were between 2.9 × 106 and 2.55 × 108 bacteria ml−1. Principal components analysis based on environmental variables revealed a single strong environmental gradient across the lakes related to conductivity, alkalinity, bacterial abundance, chlorophyll a, and (negatively) to Secchi depth. Oligotrichs (e.g. Strombidium, Strobilidium, Halteria) and scuticociliates (e.g. Cyclidium, Pleuronema, Cristigera) dominated the ciliate communities numerically. The species-environment correlations, as revealed by canonical correspondence analysis, indicate a strong relationship between ciliate genera and the environmental gradient. Herbivorous oligotrichs were characteristic of oligotrophic and mesotrophic lakes, which were also freshwater to moderately saline lakes. On the other hand, scuticociliates, primarily bacterivores, were most abundant in alkaline and saline lakes with high chlorophyll a concentrations. Biomass of ciliates was related to chlorophyll, as has been observed in temperate and subtropical lakes, but was more strongly related to bacterial concentration.
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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 | 0.007 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 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".