Table 1.

Sampling locations, site names, sampling dates and depths, along with percentage colonies at each site that hosts either exclusively clade B, C or D types, or a mix of types, and species richness and diversity (Simpson's D index) for each site. ‘n.a.’ denotes data not available.

country	identifier	reef name	depth	collection date	no. samples	relative abundance of clades (%)							dominant symbiont at each site	richness	diversity
						B	C	D	B + C	B + D	C + D	B + C + D
Honduras	A	Seaquest	4.0	Oct 2004	23	70	0	0	30	0	0	0	B1	3	0.42
	B	Sandy Bay	6.0	Oct 2004	24	17	33	0	50	0	0	0	B1/C1	6	0.20
	C	Western Wall	4.5	Oct 2004	22	82	18	0	0	0	0	0	B1	3	0.42
Belize	D	Coral Gardens	4.5	Jan 2006	24	79	0	0	0	21	0	0	B17	4	0.31
	E	Eagle Ray	2.0	Jan 2006	16	69	0	6	0	25	0	0	B1/B17	5	0.23
	G	Long Cay	6.0	Jan 2006	17	100	0	0	0	0	0	0	B1/B17	4	0.30
	H	West Reef	3.5	Jan 2006	14	100	0	0	0	0	0	0	B1/B17	4	0.29
Bahamas	CI	Conception Island	18.6	May 2007	16	94	0	0	6	0	0	0	B1	4	0.55
	EN	Exumas North	7.9	Apr 2007	24	25	0	0	0	4	50	21	D1–4	5	0.20
	K	Seahorse Reef	3.4	June 2006	22	82	0	0	18	0	0	0	B1	3	0.49
	L	Snapshot Reef	2.7	June 2006	16	100	0	0	0	0	0	0	B1	2	0.79
	N	School House Reef	3.5	June 2006	23	100	0	0	0	0	0	0	B1	3	0.50
	P	Propeller Reef	3.0	June 2006	23	78	0	0	22	0	0	0	B1	3	0.57
Nicaragua	NA	White Hole	9.0	Sep 2007	16	44	0	0	56	0	0	0	B1	5	0.22
	NB	Chavo	10.0	Sep 2007	22	18	36	0	45	0	0	0	B1/C7a	5	0.22
Colombia	CM	Palo 1	8.0	Oct 2005	11	9	73	0	18	0	0	0	C7c	4	0.27
Cuba	CA	Baracoa	4.0	Sep 2007	24	100	0	0	0	0	0	0	B10	3	0.47
	CB	Bacunayagua	4.0	Sep 2007	23	87	0	0	13	0	0	0	B10	5	0.33
	CC	Siboney	4.0	Sep 2007	24	0	0	71	0	13	17	0	D1–4	7	0.34
Cayman	X	Rum Point	5.0	Jul 2007	23	48	9	0	43	0	0	0	B1/C7	4	0.34
Dominican Republic	DR	Bayahibe	6.0	Oct 2007	15	0	93	0	7	0	0	0	C7a	5	0.29
Jamaica	JA	Drunkenmans Cay	8.0	Sep 2007	18	100	0	0	0	0	0	0	B1	3	0.68
	JB	Dairy Bull	8.0	Sep 2007	21	86	14	0	0	0	0	0	B1/B8	4	0.36
Barbados	BA	Victor's Reef	11.8	July 2007	14	86	14	0	0	0	0	0	B1j/B1	4	0.38
BVI	R	Ginger Island	n.a.	Nov 2006	24	0	4	0	0	0	79	17	D1–4	6	0.22
	T	Beef Island	n.a.	Nov 2006	16	25	31	38	6	0	0	0	B1/D1–4	6	0.14
Curaçao	SB	Snakebay	6.7	Oct 2005	16	31	38	0	31	0	0	0	C7	5	0.31
	VB	Vaersenbay	6.5	Oct 2005	16	6	69	0	25	0	0	0	C7	7	0.20
	Z	Buoy 1	4.7	Oct 2005	18	11	39	0	50	0	0	0	B1/C7	4	0.31
Dominica	DM	Grande Savane	12.0	Aug 2007	19	0	74	0	0	0	0	26	C7a	8	0.16
Tobago	TB	Buccoo Reef	3.0	Sep 2007	23	52	13	0	35	0	0	0	C1	7	0.21
Venezuela	AV	Cayo de Agua	n.a.	Aug 2007	13	38	0	0	62	0	0	0	B1j/C7a	6	0.20
	BV	Dos Mosquises	n.a.	Aug 2007	12	42	17	0	42	0	0	0	B1j/C7a	7	0.18