A critical examination of the protection level for primary producers in the first tier of the aquatic risk assessment for plant protection products

Sabine, Duquesne; Stephan, Brendel; Linda, Hönemann; Marco, Konschak; Magali, Solé; Joern, Wogram; Silvia, Pieper

doi:10.1186/s12302-023-00767-8

Environmental Sciences Europe

Table 1 Available dataset for ratios calculated with the endpoints growth rate (E_rC₅₀) and the biomass-related endpoints—area under the curve (E_bC₅₀) or yield (E_yC₅₀) endpoints-ratios E_rC₅₀/E_bC₅₀and E_rC₅₀/E_yC₅₀-for various test species (algae and aquatic macrophytes), status of active substances (approved, not approved) and their class (herbicides or fungicides)

From: A critical examination of the protection level for primary producers in the first tier of the aquatic risk assessment for plant protection products

Ratio	Test category		n	Median	± 95% CI	Statistical test	p-value
Algae
E_rC₅₀/E_bC₅₀	Test species	All species	177	2.33	2.08–2.53	–	–
	Test species	Anabaena flos-aquae^a	22	2.43	1.71–3.18	Kruskal–Wallis test	0.721
		Desmodesmus subspicatus^b	20	2.30	1.69–2.70
		Raphidocelis subcapitata^b	98	2.37	2.03–2.64
		Navicula pelliculosa^c	27	2.17	1.77–2.67
		Skeletonema costatum^c	10	1.92	1.22–4.10
	Status*	Approved	128	2.16	1.98–2.45	Wilcoxon rank sum test	0.066
	Status*	Not approved	46	2.55	2.10–3.54	Wilcoxon rank sum test	0.066
	Class**	Herbicides	112	2.27	2.08–2.55	Wilcoxon rank sum test	0.946
	Class**	Fungicides	63	2.37	1. 91–2.64	Wilcoxon rank sum test	0.946
E_rC₅₀/E_yC₅₀	Test species	All species	52	2.96	2.39–3.88	–	–
	Test species	Anabaena flos-aquae^a	6	2.69	1.89–7.62	Kruskal–Wallis test	0.643
		Desmodesmus subspicatus^b	3	2.59	–
		Raphidocelis subcapitata^b	37	3.65	2.39–4.66
		Navicula pelliculosa^c	2	2.60	–
		Skeletonema costatum^c	4	2.03	–
	Status*	Approved	31	2.61	1.89–4.19	Wilcoxon rank sum test	0.069
	Status*	Not approved	19	3.38	2.67–6.25	Wilcoxon rank sum test	0.069
	Class	Herbicides	32	3.72	2.45–4.80	Wilcoxon rank sum test	0.151
	Class	Fungicides	20	2.59	1.75–3.38	Wilcoxon rank sum test	0.151
Macrophytes
E_rC₅₀/E_bC₅₀	Test species	Lemna spp.	40	1.60	1.18–1.92	–	–
	Status*	Approved	26	1.56	1.00–1.80	Wilcoxon rank sum test	0.216
	Status*	Not approved	13	2.16	0.64–3.58	Wilcoxon rank sum test	0.216
	Class	Herbicides	35	1.64	1.20–2.00	Wilcoxon rank sum test	0.513
	Class	Fungicides	5	1.16	–	Wilcoxon rank sum test	0.513
E_rC₅₀/E_yC₅₀	Test species	All species	28	2.08	1.79–2.45	–	–
	Status	Approved	20	2.00	1.79–2.34	Wilcoxon rank sum test	0.304
	Status	Not approved	8	2.69	1.29–7.07	Wilcoxon rank sum test	0.304
	Class**	Herbicides	23	1.91	1.74–2.34	Wilcoxon	0.082
	Class**	Fungicides	4	2.69	–	Rank sum test

Information is given: “n" as number of entries, medians with ± 95% confidence intervals (CI), statistical tests used for comparing different groups and outcomes as p-values
*Status "Pending" was excluded from further statistical analysis (for details, see Methods)
**Substances labeled as both herbicide and fungicide (HU, FU) are excluded from further statistical analysis (for details, see Methods)
^aCyanobacteria, ^bGreen algae, ^cDiatom

Back to article page