Energy flows in the coffee plantations of Costa Rica: from traditional to modern systems (1935–2010)
Bibliographic record
Abstract
This article addresses energy flows in the coffee agro-ecosystems of Costa Rica within the context of the socio-ecological transition, between 1935 and 2010, accounting for the shift from traditional to modern tropical agriculture. Estimating indicators of energy efficiency in crop management makes it possible to analyze the changing productive rationality of growers by studying end uses of all biomass appropriated from coffee agro-ecosystems. Coffee land and labor productivity, as expected, multiplied (by factors of 2.01 and 1.56, respectively). However, considering total biomass produced in coffee agro-ecosystems, productivity did not display such a significant increase. In contrast, all other energy efficiency indicators declined. Final energy return on investment (FEROI) fell from 1.02 in 1935 to 0.51 in 2005. External final EROI fell even farther, from 18.90 down to 1.86. The socio-ecological transition brought about the loss of multifunctionality in the final use of products derived from coffee agro-ecosystems, as new products replaced traditional ones.
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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 | 0.000 | 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".