Assessment framework to predict sensitivity of marine calcifiers to ocean alkalinity enhancement – identification of biological thresholds and importance of precautionary principle

Bednaršek, Nina; van de Mortel, Hanna; Pelletier, Greg; García-Reyes, Marisol; Feely, Richard A.; Dickson, Andrew G.

doi:https://doi.org/10.5194/bg-22-473-2025

Articles | Volume 22, issue 2

https://doi.org/10.5194/bg-22-473-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Environmental impacts of ocean alkalinity enhancement

https://doi.org/10.5194/bg-22-473-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 22, issue 2

Research article

| Highlight paper

|

28 Jan 2025

Research article | Highlight paper |

| 28 Jan 2025

Assessment framework to predict sensitivity of marine calcifiers to ocean alkalinity enhancement – identification of biological thresholds and importance of precautionary principle

Nina Bednaršek, Hanna van de Mortel, Greg Pelletier, Marisol García-Reyes, Richard A. Feely, and Andrew G. Dickson

Supplement

https://doi.org/10.5194/bg-22-473-2025-supplement

Model code and software

hannavdmortel/OAE_calc_responses: Temperature change+pre-industrial lines removed (v1.1.0) Hanna van de Mortel https://doi.org/10.5281/zenodo.14024442

PyCO2SYS: marine carbonate system calculations in Python M. P. Humphreys et al. https://doi.org/10.5281/zenodo.13759753

Video abstract

Assessment framework to predict sensitivity of marine calcifiers to ocean alkalinity enhancement - identification of biological thresholds and importance of precautionary principle Nina Bednaršek https://doi.org/10.5446/69393

Download

Article (3193 KB)
Full-text XML

Co-editor-in-chief

This paper warrants selection as a highlight due to its comprehensive synthesis of ocean alkalinity enhancement (OAE) impacts on marine calcifiers, offering essential insights for understanding potential ecological risks of this climate mitigation approach. By leveraging data from 96 studies and capturing responses across eleven biological groups, the paper establishes a predictive framework for biological responses to OAE. This work addresses a critical gap in OAE research, providing a precautionary guideline that can inform future studies, guide regional applications, and communicate risks to stakeholders.