Table 2 Sampling information and summary statistics for Alcyonium digitatum samples

Region/Population	Code	N	N _g	Depth (m)	Lat	Long	H _exp	A _r	PA _r	F _IS
Britain
^aIsles of Scilly, Seven Stones Reef	Sev	40	40	35	50.03	−6.12	0.624	4.12	0.162	0.055
^aIsles of Scilly, Trenemene Reef	Tre	42	42	32	49.87	−6.39	0.598	4.07	0.133	0.003
^aLundy Island	Lun	36	36	23	51.20	−4.68	0.618	4.15	0.098	0.023
^bLyme Bay, Frognor Wreck	Fro	18	18	34	50.53	−2.55	0.626	4.25	0.193	0.042
^bLyme Bay, UB74 Wreck	Ub74	19	19	34	50.53	−2.56	0.635	4.18	0.130	0.034
^aManacles, Carn-du-rocks	Cdr	35 (2)	33	26	50.05	−5.05	0.636	4.21	0.122	0.007
Porthallow Bay, Volnay Wreck	Vol	28	28	21	50.07	−5.00	0.659	4.31	0.099	−0.001
^aSkomer Island, The Lucy Wreck	Luc	23 (1)	22	35	51.74	−5.28	0.594	4.01	0.075	0.027
^aSkomer Island, Payne’s Rock	Pay	51	51	30	51.74	−5.31	0.637	4.17	0.109	0.025
^aSkomer Island, Tusker Rock	Tus	21	21	29	51.74	−5.26	0.629	4.22	0.189	0.031
Swanage, Betsy Anna Wreck	Bet	26 (2)	24	23	50.62	−1.83	0.620	4.07	0.085	0.024
North Sea, Humberside	Hum	27	27	25	53.64	1.55	0.618	4.08	0.120	−0.014
North Sea, Norfolk	Nor	33	33	25	53.28	1.58	0.668	4.29	0.106	0.059
Ireland
Mayo, Inishturk Island	Ini	48	48	27	53.72	−10.12	0.625	4.13	0.118	0.038
Sligo, Thumb Rock	Thu	18	18	15	54.47	−8.44	0.655	4.24	0.156	−0.058
France
Brittany, Rade de Brest	Bre	43	43	35	48.34	−4.58	0.645	4.23	0.134	0.068
Brittany, Laonegued Taer	Lao	29	29	30	47.73	−4.06	0.595	3.99	0.133	0.053
Brittany, Men Goe	Men	35 (1)	34	30	47.69	−3.99	0.653	4.22	0.087	0.063
Brittany, Roscoff1	Ros1	41	41	35	48.75	−3.96	0.635	4.23	0.199	0.035
Brittany, Roscoff2	Ros2	42 (1)	41	25	48.71	−3.90	0.649	4.34	0.117	0.062

Abbreviation: CI, confidence interval.
Number of individuals genotyped per population (N) (with number of duplicate genotypes), number of unique genotypes per population (N_g), expected heterozygosity (H_exp), allelic richness (A_r), private allelic richness (PA_r) and the inbreeding coefficient (F_IS) are reported for each population. F_IS values significantly different from zero (95% CI) are highlighted in bold.
^aMarine Conservation Zone.
^bCandidate Special Area of Conservation.

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