The abstract is read at the publisher; the summary is JClub's.
In Chlamydomonas reinhardtii, adding 0.5 mg C L−1 natural organic matter reduces La biouptake by 43–87% despite >90% calculated La3+ reduction.
- Why it matters: Trivalent rare earth concentrations poorly predict biological effects, limiting how well bioavailability models like the Biotic Ligand Model capture the role of La complexation in natural waters.
- What they did: Measured La biouptake fluxes in Chlamydomonas reinhardtii across 11 characterized NOM samples, testing whether dissolved organic carbon predicts uptake and relating effects to NOM quality metrics.
- The result: NOM effect on La biouptake varies by NOM origin and quality: at 10 mg C L−1, Suwannee River Humic Acid (fluorescence index = 1.2) reduced uptake by 95% versus 67% for Cameroun River (fluorescence index = 1.9).
The findingWhy it mattersWhat they didThe result
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