Table 1 Summary of experimental design and data collection over all 3 surveys.

Site	FI aimed for (number of times fished)		FI achieved (number of times fished)	Number of grab samples		Number of BT samples	Depth range (m)	Texture (in fraction of number of samples collected per site)
Site	Passes	FI	FI achieved (number of times fished)	Collected	Processed	Number of BT samples	Depth range (m)	Sand	Gravel
S01	0	0	0.0	27	—	12	32.4–43.3	0.19	0.81
S02	0	0	0.0	26	24	14	31.8–43.4	0.12	0.88
S03	0	0	0.0	27	21	12	35.9–45.2	0.66	0.33
S04	123	0.2	0.3	16	13	14	39–45.3	0.47	0.53
S05	172	0.35	0.2	26	—	13	38.6–43.7	0.32	0.68
S06	245	0.5	0.5	15	—	11	34.3–42.6	0.47	0.53
S07	348	0.7	0.0	22	19	13	38.2–43.2	0.64	0.36
S08	491	1	1.1	15	14	11	28.7–37.3	0.72	0.28
S09	619	1.3	1.2	26	21	12	33–40.9	0.56	0.44
S10	781	1.6	1.6	16	—	13	35.6–39.6	0.25	0.75
S11	982	2	1.9	24	14	12	41–45.9	0.92	0.08
S12	1237	2.5	2.3	15	15	10	36.9–40	0.93	0.07
S13	1556	3.2	3.1	27	21	10	33.4–45.1	0.39	0.61
S14	1964	4	3.8	16	16	12	31.9–42.6	0.21	0.79
S15	2474	5	3.9	16	15	12	37.9–40.6	0.69	0.31
S16	3117	6.3	5.3	16	15	13	36.8–43.7	0.50	0.50
S17	3928	8	6.1	26	24	12	36.1–45.9	0.68	0.32

FI is the Fishing Intensity. Passes = the number of single dredge tows expected to achieve a specific FI. Number of grabs processed corresponds to grabs that have been analyzed for fauna. BT indicates the number of beam trawl samples. See map Fig. 1. Note that the design was unbalanced and not all grab samples were processed due to logistical constraints.

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