OPTICAL BIOGEOGRAPHY OF <i>PROCHLOROCOCCUS</i> AND PHYCOERYTHRIN CONTAINING PICOCYANOBACTERIA ON THE WEST FLORIDA SHELF
Bibliographic record
Abstract
Wood, A. M.1, Li, W. K. W.2, Arnone, R.3, Gould, R.4, and Lohrenz, S.4 1Dept. of Biology, University of Oregon, Eugene, OR 97403, USA; 2Bedford Institute of Oceanography, Dartmouth, N.S., B2Y4A2, Canada; 3Naval Research Laboratory, Code 7333, Stennis Space Center, MS 39529 USA; 4Department of Marine Science, University of Southern Mississippi, Stennis Space Center, MS 39259 USA Prochlorococcus and phycoerythrin‐containing picocyano‐bacteria co‐dominate oligotrophic waters in temperate and tropical areas. Less is known about their distribution in coastal areas where optical conditions lead to shallower euphotic zones and a different attenuation spectra for incident light. In this study we compare the distribution of Prochlorococcus and phycoerythrin‐containing picocyano‐bacteria (mostly Synechococcus) with data on inherent and apparent optical properties in a subtropical continental shelf environment. Abundance and pigment diversity for these two major groups of picoplankton was determined by flow cytometry and several fluorescence approaches at 22 stations on the continental shelf off of Tampa Bay, Florida, in the Gulf of Mexico. Hydrographic and optical data indicated that a wide range of optical environments were sampled, ranging from turbid, shallow water influenced by exchange with Tampa Bay, to very transparent oceanic water on the outer shelf. The abundance of the two major groups of picoplanktonic cyanobacteria, Synechococcus and Prochlorococcus, was negatively correlated with Prochlorococcus reaching peak concentrations of ~105 ml‐1 on the outer shelf and Synechococcus reaching peak concentrations of ~5 X 105 ml‐1 on the inner shelf. The high abundance of Synechococcus in turbid, green waters on the inner shelf indicates that this taxon includes a number of strains that are adapted to coastal environments and that, as a group, they do equally well in neritic waters as in oceanic regions. In contrast, Prochlorococcus appears to be an open‐ocean specialist.
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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 | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| 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".