Skip to main content
Log in

Can correlational analyses help determine the drivers of microcystin occurrence in freshwater ecosystems? A meta-analysis of microcystin and associated water quality parameters

  • Published:
Environmental Monitoring and Assessment Aims and scope Submit manuscript

Abstract

Microcystin (MC) is a toxic secondary metabolite produced by select cyanobacteria that threatens aquatic and terrestrial organisms over a diverse range of freshwater systems. To assess the relationship between environmental parameters and MC, researchers frequently utilize correlational analyses. This statistical methodology has proved useful when summarizing complex water quality monitoring datasets, but the correlations between select parameters and MC have been documented to vary widely across studies and systems. Such variation within the peer-reviewed literature leaves uncertainty for resource managers when developing a MC monitoring program. The objective of this research is to determine if correlational analyses between environmental parameters and MC are helpful to resource managers desiring to understand the drivers of MC. Environmental (i.e., physical, chemical, and biological) and MC correlation data were retrieved from an estimated 2,643 waterbodies (largely from the north temperate region) and synthesized using a Fisher’s z meta-analysis. Common water quality parameters, such as chlorophyll, temperature, and pH, were positively correlated with MC, while transparency was negatively correlated. Interestingly, 12 of the 15 studied nitrogen parameters, including total nitrogen, were not significantly correlated with MC. In contrast, three of the four studied phosphorus parameters, including total phosphorus, were positively related to MC. Results from this synthesis quantitatively reinforces the usefulness of commonly measured environmental parameters to monitor for conditions related to MC occurrence; however, correlational analyses by themselves are often ineffective and considering what role a parameter plays in the ecology of cyanobacterial blooms in addition to MC production is vital.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4

Similar content being viewed by others

Availability of data and material

All data utilized in this study are publicly available. References to the data used in this study can be found in the Appendix A1. It is encouraged that researchers reassess the data sources referenced in this study as these sources may be updated with new data.

Code availability

All code can be found in Appendix A1.

References

Download references

Acknowledgements

The authors thank the anonymous reviewers who have helped strengthen this study. The authors also thank the helpful comments provided by individuals in the Meta-analysis course at Auburn University taught by AEW.

Funding

This project was supported by a grant from the National Science Foundation (DEB-1831094), two USDA grants (2017–70007-27132 and 58–6010-0–006), the Alabama Agricultural Experiment Station, and the Hatch program of the National Institute of Food and Agriculture (ALA016-1–16007), U.S. Department of Agriculture.

Author information

Authors and Affiliations

Authors

Contributions

All authors have contributed to the research, preparation, and writing of this article.

Corresponding author

Correspondence to Riley P. Buley.

Ethics declarations

Ethics approval

Not applicable.

Consent to participate

Not applicable.

Consent for publication

Not applicable.

Competing interests

The authors declare no competing interests.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Supplementary Information

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Buley, R.P., Gladfelter, M.F., Fernandez-Figueroa, E.G. et al. Can correlational analyses help determine the drivers of microcystin occurrence in freshwater ecosystems? A meta-analysis of microcystin and associated water quality parameters. Environ Monit Assess 194, 493 (2022). https://doi.org/10.1007/s10661-022-10114-8

Download citation

  • Received:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1007/s10661-022-10114-8

Keywords

Navigation