Maya Marine Subsistence: Isotopic Evidence from Marco Gonzalez and San Pedro, Belize
Bibliographic record
Abstract
Abstract This article presents stable nitrogen and carbon isotopie analyses of diet at the Maya sites of Marco Gonzalez and San Pedro, Belize. This study, which provides important insight into social organization, trade, and subsistence economy for the Postclassic and Historic periods (ca. A.D. 900–1650), also expands our understanding of the distribution of stable carbon and nitrogen isotopes within coral reef food webs off coastal Belize. Marco Gonzalez and San Pedro represent the first documented ancient Maya populations whose diet consisted mostly of marine resources with a minimal reliance upon maize. Although these sites do not appear highly stratified, and there are no dietary differences between sexes or status, the inhabitants of Marco Gonzalez incorporated more mainland-terrestrial animals and maize into their diet than the people of San Pedro. This finding supports the postulated roles of these two settlements, where Marco Gonzalez had trade ties to the mainland site of Lamanai and San Pedro was a small fishing village.
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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 | 0.000 | 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) | 0.002 | 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".