TABLE 5.

Analysis of LH-PCR amplicon sizes, identities, and percent peak areas

Amplicon	Size (bp)	Phylogenetic group(s)	Taxonomic affiliationa	% Peak area
				September 2002			March 2003
				Station 908	Station 818	Station 707	Station 908	Station 818	Station 707
a	313	Synechococcus	C	0.8	1.3
b	314	Roseobacter Ches I, II, and IV and fibrobacters	α, F	5.9	10.8	6.5	3.2	12.7	15.2
c	316	Ches I and II, DG1128, AS26 Rhodobacter, slope strain D14, Sulfitobacter, SAR11-II and -III, and SAR116	α	23.2	16.8	7.5	23.7	29.2	32.5
d	317	SAR11-IA	α	29.9	23.4	35.3
e	318	Arctic sea ice ARK 9990 and GAI-37	α				8.8	2.1	2.6
f	319	Plastids	P	0.9	1.4	4.9
g	328	Rhodospirillalles	α	1.3	3.6	4.5
h	329	Rhodospirillalles	α		2.7
i	330	Ahrensia sp. strain DFL-42	α	0.2	0.4	2.2	5.1	2.5	2.7
j	331	Pseudorhodobacter	α	0.6			22.3	1.2
k	334	Unknown	ND	1.1	1.0	1.0
l	339	Gamma	γ	0.6	2.7	3.3
m	340	Delta	δ	1.9	3.7	2.1	1.9	3.7
n	342	GKS98, SAR86-II, and acI-B and -C	β, γ, A	2.4	2.7	2.6	19.9	29.4	12.3
o	345	acI-D, acII-B, and Verrucomicrobiales	A, V			3.9			8.2
p	346	acII-A and acIV-A	A	1.3			4.4
q	347	Bacteroidetes and Verrucomicrobiales	B, V	4.5	4.1	2.9	4.3	7.3	5.9
r	348	Bacteroidetes and acIII, IV-C	B, A	4.3	6.7	4.5	5.5	8.7	13.0
s	349	Bacteroidetes	B	1.9	4.5	1.8		2.7	3.1
t	350	Bacteroidetes and unidentified Gamma	B, γ	1.7	1.6
u	353	Plankton marine actinobacteria and acIV-B and -D	A	12.0	5.6	6.3	0.7	0.5	0.9
v	358	Unknown	ND	0.4	0.4	0.8			1.1
w	360	SAR86-IV	γ	2.0	1.2	1.7
x	361	Gamma AGG47, HTCC2188, and Sva0091	γ	2.7	2.8	6.2			2.4
y	376	Unknown	ND	0.4	2.6	2.0

^aα, β, γ, and δ refer to the subdivisions of the Proteobacteria. C, Cyanobacteria; F, fibrobacters; A, Actinobacteria; B, Bacteroidetes group; P, plastids; ND, not determined.