Changes in the zooplankton community of the British Columbia continental margin, 1985-1999, and their covariation with oceanographic conditions
Bibliographic record
Abstract
A 15-year zooplankton time series collected off southern Vancouver Island (4849°N) shows large interannual anomalies of biomass for most major zooplankton species. Variations within groups of ecologically similar species have been more extreme (often 10-fold or greater) than the variation in total biomass (four- to six-fold). For both total biomass and species groups, the zooplankton anomalies develop and persist over time spans of several years and are correlated across a large spatial scale (>100 km longshore). One dominant mode of recent zooplankton variation was a 19901998 cumulative shift to a more "southerly" copepod and chaetognath fauna: order-of-magnitude declines in several species endemic to the Northeast Pacific continental shelf and order-of-magnitude increases of species endemic to the California Current (3545°N). This trend abruptly reversed in 1999. A second major mode of zooplankton variability consisted of roughly mirror-image fluctuations in the abundance of euphausiids versus subarctic oceanic copepods. Zooplankton anomalies were correlated with year-to-year changes in several physical environmental indices. The patterns of covariance suggest that zooplankton community composition responds strongly to ocean climate fluctuations and in particular to changing current patterns.
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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 | 0.001 | 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 | 0.001 | 0.001 |
| 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 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".