Table 5:
Mean values of elemental composition (ppm) of eleven species of seaweeds collected in Fernando de Noronha Archipelago, off northeastern Brazil and their respective CV, coefficient of variation (%).
Species
As
Ba
Br
Ca
Co
Cr
Cs
Cu
Dy
Fe
K
Mn
Mo
Ni
Pb
Rb
Sr
Ti
V
Zn
Chlorophyta
C. verticillata
10.82 (11.26)
—
8.60 (13.63)
20639.78 (0.93)
—
11.91 (12.51)
—
—
—
2559.68 (0.47)
504.13 (5.08)
21.43 (6.40)
—
—
—
—
511.19 (1.80)
108.86 (3.66)
14.06 (8.37)
11.44 (3.83)
Rhodophyta
A. taxiformis
—
—
257.10 (2.64)
88908.21 (1.95)
—
25.87 (10.30)
—
—
108.47 (10.46)
4108.09 (1.77)
1988.31 (3.22)
77.14 (9.75)
—
—
12.18 (9.48)
—
2121.10 (1.79)
224.55 (4.35)
39.63 (5.53)
17.35 (1.61)
D. occidentalis
12.03 (8.43)
—
—
15366.59 (0.30)
—
6.26 (7.96)
62.98 (17.10)
1.55 (11.38)
6.12 (15.43)
915.92 (1.15)
49523.34 (1.29)
10.33 (4.35)
465.94 (14.12)
—
—
13.78 (10.85)
718.43 (2.12)
—
—
3.21 (18.63)
G. rugosa
—
—
1.65 (17.96)
22949.59 (1.63)
—
5.28 (2.41)
192.80 (5.05)
—
21.66 (15.51)
513.81 (2.55)
1092.76 (3.99)
15.64 (1.90)
832.84 (12.86)
—
2.00 (9.25)
—
1735.42 (3.63)
—
—
2.36 (12.17)
G. obtusata
—
—
—
41500.55 (6.75)
—
—
358.28 (7.76)
—
39.57 (14.48)
245.12 (5.92)
2611.29 (6.96)
23.58 (23.38)
671.37 (9.99)
—
—
—
3002.25 (9.42)
—
—
3.80 (16.81)
G. marginata
—
—
—
82606.32 (0.88)
—
—
736.05 (3.21)
—
54.34 (9.56)
75.27 (7.73)
15655.44 (0.62)
39.79 (5.66)
836.71 (7.84)
—
—
—
5957.57 (1.53)
—
—
5.70 (18.02)
Phaeophyta
D. cervicornis
—
—
20.21 (8.44)
44313.30 (1.04)
—
19.53 (5.43)
—
—
—
3621.88 (0.88)
40527.54 (1.21)
60.85 (4.33)
—
—
27.22 (1.73)
—
2272.40 (0.61)
181.51 (5.68)
44.39 (10.78)
25.54 (2.92)
D. justii
17.35 (2.37)
21.39 (14.88)
3.56 (12.04)
18394.89 (4.26)
3.53 (4.81)
—
—
—
—
1410.02 (4.05)
7370.06 (4.41)
30.33 (3.94)
—
5.35 (16.12)
—
—
3046.38 (4.15)
—
33.87 (3.00)
22.50 (1,67)
D. plagiogramma
—
—
—
56397.66 (2.17)
—
53.64 (7.44)
289.32 (15.38)
—
46.31 (19.97)
11936.65 (2.62)
10593.50 (2.35)
78.34 (6.44)
—
15.15 (5.23)
17.56 (16.64)
47.58 (12.20)
1521.78 (0.91)
537.01 (7.26)
—
24.58 (3.78)
P. gymnospora
15.20 (2.28)
—
8.03 (10.63)
3028.40 (0.55)
1.93 (17.99)
—
148.77 (2.46)
1.10 (11.52)
—
251.77 (0.73)
9910.06 (0.51)
7.04 (6.41)
—
1.91 (13.19)
—
12.75 (17.70)
881.64 (1.21)
—
—
274.44 (0.33)
Sargassum
sp.
117.92 (0.10)
—
16.63 (5.92)
14035.01 (0.70)
5.35 (7.23)
—
—
1.61 (9.72)
—
172.12 (1.91)
27196.26 (0.84)
21.53 (5.85)
—
2.68 (8.54)
—
36.43 (9.32)
1453.50 (0.77)
—
14.13 (6.20)
6.15 (5.63)
Average
34.67
21.39
45.11
37103.66
3.60
20.41
298.03
1.42
46.08
2346.40
15179.33
35.09
701.71
6.27
14.74
27.63
2111.06
262.98
29.22
36.10
—: not detected.