. 2021 May 24;55(12):7900–7909. doi: 10.1021/acs.est.0c07129

Table 1. Calculated Emergent Aquatic Insect Numbers, Emergence Biomass, and Insect-Mediated PFAS Transfer Per Square Meter and Day, as well as PFAS Concentration Measured in Terrestrial Spiders, for 2017 and 2018 from the Stream (K1), the Lake (KS), and the Reference Pond (KRef)^a.

	number of individuals (m^–2 d^–1)		biomass (mg dw m^–2 d^–1)		PFAS transfer (ng m^–2 d^–1)		PFAS in spiders (ng g^–1 dw)
site	2017	2018	2017	2018	2017	2018	2017
K1	-	11	-	3.1	-	2.1	640
KS	25	17	49	6.4	280	23	1400 ± 82
KRef	46	18	44	9.2	0.4	0.1	35

Due to low emergence, no values could be determined for K1 in 2017. Note that the data on emergent aquatic insects are based on insects caught via deposition traps only.

Table 1. Calculated Emergent Aquatic Insect Numbers, Emergence Biomass, and Insect-Mediated PFAS Transfer Per Square Meter and Day, as well as PFAS Concentration Measured in Terrestrial Spiders, for 2017 and 2018 from the Stream (K1), the Lake (KS), and the Reference Pond (KRef)a.

Table 1. Calculated Emergent Aquatic Insect Numbers, Emergence Biomass, and Insect-Mediated PFAS Transfer Per Square Meter and Day, as well as PFAS Concentration Measured in Terrestrial Spiders, for 2017 and 2018 from the Stream (K1), the Lake (KS), and the Reference Pond (KRef)^a.