How does integrating multi-scale monitoring and compound-specific isotope analysis improve the evaluation of <i>S</i>-metolachlor degradation in agro-ecosystems?

Droz, Boris; Drouin, Guillaume; Lohmann, Jenna; Guyot, Benoit; Imfeld, Gwenaël; Payraudeau, Sylvain

doi:10.5194/hess-30-1291-2026

Articles | Volume 30, issue 5

https://doi.org/10.5194/hess-30-1291-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/hess-30-1291-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 30, issue 5

Research article

|

04 Mar 2026

Research article |

| 04 Mar 2026

How does integrating multi-scale monitoring and compound-specific isotope analysis improve the evaluation of S-metolachlor degradation in agro-ecosystems?

Boris Droz, Guillaume Drouin, Jenna Lohmann, Benoit Guyot, Gwenaël Imfeld, and Sylvain Payraudeau

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Cumulative views and downloads (calculated since 24 Jul 2025)

Month	HTML	PDF	XML	Total
Jul 2025	116	20	4	140
Aug 2025	432	54	10	496
Sep 2025	1,152	26	20	1,198
Oct 2025	112	28	8	148
Nov 2025	60	58	20	138
Dec 2025	36	46	16	98
Jan 2026	104	76	10	190
Feb 2026	62	28	2	92
Mar 2026	296	149	19	464
Apr 2026	190	78	6	274
May 2026	98	61	5	164
Jun 2026	22	12	4	38
Jul 2026	58	29	6	93
Aug 2026	44	37	4	85
Sep 2026	79	24	19	122

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Short summary

How to evaluate pesticide persistence and degradation across an agricultural catchment to improve strategies for preserving aquatic ecosystems? By using a tracing method based on stable isotope signatures of pesticides at the catchment scale, degradation of the herbicide S-metolachlor could be distinguished from other dissipation processes. A limited number of isotopic measurements can provide critical insights for designing efficient strategies to protect aquatic ecosystems.