Oxidative Constraint Suppression of Biosignature Detectability A Minimal Model for False Negatives in Planetary Life Detection
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| Natura: | Recurso digital |
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Zenodo
2026
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| _version_ | 1866901087827525632 |
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| author | Sambey, Stanley Everett |
| author_facet | Sambey, Stanley Everett |
| contents | <p>The detection of extraterrestrial life is fundamentally limited not only by biological abun-<br>dance but by the persistence of measurable biosignatures under environmental constraints. Ox-<br>idizing environments, such as the perchlorate-rich regolith of Mars, simultaneously degrade<br>organic molecules and suppress instrumental recovery of biological signals. We present a mini-<br>mal dynamical model in which biosignature detectability is governed by a competition between<br>biological production, environmental oxidant-driven destruction, and measurement-induced loss.<br>The framework formalizes a regime in which life may persist while remaining observationally<br>inaccessible, providing a quantitative basis for false negatives in planetary life detection. The<br>model predicts a systematic shift in detectable biosignature classes toward oxidation-resistant<br>channels and is shown to be consistent with historical Mars observations.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_19212305 |
| institution | Zenodo |
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| publishDate | 2026 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Oxidative Constraint Suppression of Biosignature Detectability A Minimal Model for False Negatives in Planetary Life Detection Sambey, Stanley Everett <p>The detection of extraterrestrial life is fundamentally limited not only by biological abun-<br>dance but by the persistence of measurable biosignatures under environmental constraints. Ox-<br>idizing environments, such as the perchlorate-rich regolith of Mars, simultaneously degrade<br>organic molecules and suppress instrumental recovery of biological signals. We present a mini-<br>mal dynamical model in which biosignature detectability is governed by a competition between<br>biological production, environmental oxidant-driven destruction, and measurement-induced loss.<br>The framework formalizes a regime in which life may persist while remaining observationally<br>inaccessible, providing a quantitative basis for false negatives in planetary life detection. The<br>model predicts a systematic shift in detectable biosignature classes toward oxidation-resistant<br>channels and is shown to be consistent with historical Mars observations.</p> |
| title | Oxidative Constraint Suppression of Biosignature Detectability A Minimal Model for False Negatives in Planetary Life Detection |
| url | https://doi.org/10.5281/zenodo.19212305 |