Ocean Calamities: Hyped Litany or Legitimate Concern?
Bibliographic record
Abstract
Conservation scientists have expressed concern that impending marine extinctions are often overlooked (Dulvy et al. 2003) and that, by the time enough data are collected to justify protection, it is too late (Taylor and Gerrodette 1993). For potentially major and difficult-to-reverse threats, there is far greater risk in failing to detect existent impacts than in having detected nonexistent impacts (Dayton 1998, Oreskes and Conway 2014). In stark contrast, Duarte and colleagues (2015) argue that, by exaggerating the significance of small, regional problems and “perpetuating the perception of ocean calamities in the absence of robust evidence,” scientists and the media present an “overly negative message” that is “driving society into pessimism.” In other words, Duarte and colleagues claim that things are better off than most people think. They identify a handful of environmental issues in the oceans (e.g., the depletion of fish stocks, jellyfish blooms, harmful algal blooms, and hypoxia), label them “calamities” and “plagues” (terms uncommon to the scientific literature), and explain why each issue should or should not be a focus of public and scientific concern. They create a three-part typology for identifying “calamities”—anthropogenic cause, spread to global scale, and severe disruption to marine social–ecological systems—and then present cases that suggest “strong,” “medium,” or “weak” evidence for each. Overfishing, for instance, is a “calamity” for which the authors concede strong evidence in all three categories. In contrast, they suggest that other ocean problems (e.g., hypoxia, jellyfish blooms, the decline of calcifiers due to ocean acidification) present “weak” to “medium” evidence and suggest that these “calamities” are a byproduct of an increased ability to detect change or a misinterpretation of short-term data.
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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 | 0.013 | 0.050 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.002 | 0.002 |
| Science and technology studies | 0.010 | 0.057 |
| Scholarly communication | 0.015 | 0.019 |
| Open science | 0.002 | 0.011 |
| Research integrity | 0.019 | 0.023 |
| Insufficient payload (model declined to judge) | 0.008 | 0.002 |
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".