{"id":"W4411505139","doi":"10.1029/2025gb008545","title":"Long‐Term and Seasonal Drivers of Organic Matter in the Clearwater Tapajós River and Implications for the Amazon River Basin","year":2025,"lang":"en","type":"article","venue":"Global Biogeochemical Cycles","topic":"Marine and coastal ecosystems","field":"Earth and Planetary Sciences","cited_by":0,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"","keywords":"Dissolved organic carbon; Amazon rainforest; Tributary; Environmental science; Carbon cycle; Total organic carbon; Hydrology (agriculture); Drainage basin; Organic matter; Environmental chemistry; Ecosystem; Geology; Chemistry; Geography; Ecology","routes":{"ca_aff":false,"ca_fund":false,"ca_venue":false,"about_ca":true,"invisible_to_affiliation_only":true},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0001998173,0.000138061,0.0001433583,0.0004345582,0.0003160154,0.0005732725,0.000214796,0.0002351567,0.001107379],"category_scores_gemma":[0.0005154636,0.0001041615,0.0002230732,0.0007392414,0.0002935662,0.0004910905,0.0003706586,0.0002270027,0.0000699301],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0006700445,"about_ca_system_score_gemma":0.000522556,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.06071873,"about_ca_topic_score_gemma":0.08094306,"domain_scores_codex":[0.9999001,0.00001356885,0.000009437506,0.00003502335,0.00001651374,0.0000252981],"domain_scores_gemma":[0.9996722,0.00005266284,0.000133217,0.00001244683,0.00007394142,0.00005566263],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.00003951187,0.00002869529,0.9887486,0.00003462994,0.00004687683,0.000185587,0.0003480358,0.0002088447,0.005932955,0.0001510044,0.0002218971,0.004053226],"study_design_scores_gemma":[0.000001336491,0.000004296471,0.9986011,0.000004757026,0.000008260786,0.00002966112,0.0003478858,0.0006083929,0.0001016566,0.00004228839,0.0002473185,0.000003000007],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9988315,0.0001467032,0.00008565508,0.0001671889,0.000003800321,0.000003564611,0.0003994056,0.000006465883,0.0003557678],"genre_scores_gemma":[0.9995852,0.00006386475,0.00005500962,0.00002196878,0.00000494633,0.000003709544,0.0001629135,0.000002479559,0.00009990761],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.06071873,"threshold_uncertainty_score":0.1207306,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.006656780648527082,"score_gpt":0.2116973178890123,"score_spread":0.2050405372404852,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}