Table 1.

DNA copies for each species for pore water and pore water-free sediment samples.

Sample ID	Core depth		Pore water (copies ml⁻¹)	SD	Detection/total replicates	Pore water-free sediment mean (copies g⁻¹ dry)	SD	Detection/total replicates
Sample ID	Top (cm)	Bottom (cm)	Pore water (copies ml⁻¹)	SD	Detection/total replicates	Pore water-free sediment mean (copies g⁻¹ dry)	SD	Detection/total replicates
Japanese anchovy
BMC18-2	0	5	ND	—	0/4	6422.6	1140.7	4/4
BMC18-2	20	25	ND	—	0/4	2597.9	684.2	4/4
BMC18-2	40	45	ND	—	0/4	367.1	290.0	3/4
BMC18-4	0	5	ND	—	0/4	3469.7	1915.8	4/4
BMC18-4	20	25	ND	—	0/4	2904.3	1093.6	4/4
BMC18-4	30	35	ND	—	0/4	466.7	281.1	4/4
Japanese sardine
BMC18-2	0	5	ND	—	0/4	0.0	0.0	0/4
BMC18-2	20	25	ND	—	0/4	0.0	0.0	0/4
BMC18-2	40	45	ND	—	0/4	13.5	15.5	2/4
BMC18-4	0	5	ND	—	0/4	0.0	0.0	0/4
BMC18-4	20	25	ND	—	0/4	283.5	567.0	1/4
BMC18-4	30	35	ND	—	0/4	12.4	24.8	0/4
Jack mackerel
BMC18-2	0	5	ND	—	0/4	0.0	0.0	0/4
BMC18-2	20	25	ND	—	0/4	0.0	0.0	0/4
BMC18-2	40	45	ND	—	0/4	0.0	0.0	0/4
BMC18-4	0	5	ND	—	0/4	0.0	0.0	0/4
BMC18-4	20	25	ND	—	0/4	84.6	169.2	1/4
BMC18-4	30	35	ND	—	0/4	0.0	0.0	1/4