TABLE 1.

Sample and sequencing overview for the in situ enrichments.

Sample name	Biosample	Short name	Substrate	Sediment depth	Temperature(°C)	Filtered amplicons
CGB12_MID81_IS7_1	SAMN06885931	CGB7_1	Salmeal	∼4.5–7 cm	∼30	33232
CGB12_MID82_IS7_2	SAMN06885933	CGB7_2		∼9–11 cm	∼50	20136
CGB12_MID83_IS7_3	SAMN09901157	CGB7_3		∼13.5–16 cm	∼75	29967
CGB11_MID92_IS8_1	SAMN09901172	CGB8_1	Unamended sediment	∼4.5–7 cm	∼30	44308
CGB11_MID93_IS8_2	SAMN09901206	CGB8_2		∼9–11 cm	∼50	39474
CGB11_MID94_IS8_3	SAMN09901209	CGB8_3		∼13.5–16 cm	∼75	32820
CGB11_MID89_IS6_1	SAMN09901170	CGB6_1	Sulfite-pulped spruce	∼4.5–7 cm	∼30	33303
CGB11_MID90_IS6_2	SAMN09768205	CGB6_2		∼9–11 cm	∼50	26849
CGB11_MID91_IS6_3	SAMN09768207	CGB6_3		∼13.5–16 cm	∼75	35463