. 2017 Jan 25;5:e2918. doi: 10.7717/peerj.2918

Table 3. Total amount of halogens emitted per g dry weight of seaweeds (ng gDW⁻¹), the amount of bromine (Br), chlorine (Cl) and iodine (I) (ng gDW⁻¹) and their percentage contribution (%) to the total halogen amount during the four hour incubation.

pH	Total halogens emitted (ng gDW⁻¹)	Br		Cl		I
		Total amount	%	Total amount	%	Total amount	%
Kappaphycus alvarezii
8.0	9477.5 ± 1132.0^c	9353.1 ± 1118.0^c	98.7 ± 0.0^b	91.7 ± 14.2^a	1.0 ± 0.1^a	32.8 ± 4.2^a,b	0.4 ± 0.1^a
7.8	4963.0 ± 986.7^a	4880.9 ± 974.8^a	98.3 ± 0.2^a,b	51.9 ± 10.1^c	1.1 ± 0.2^a,b	30.2 ± 4.6^a,b	0.6 ± 0.0^c
7.6	7937.7 ± 1847.6^b,c	7803.1 ± 1828.2^b,c	98.3 ± 0.2^a,b	113.3 ± 21.4^a,b	1.5 ± 0.2^b,c	21.3 ± 3.6^c	0.3 ± 0.1^a
7.4	6230.5 ± 732.6^a,b	6111.1 ± 720.1^a,b	98.1 ± 0.1^a	94.5 ± 12.0^a	1.5 ± 0.1^c	24.8 ± 1.4^a,c	0.4 ± 0.0^a,b
7.2	7279.6 ± 820.5^a,b,c	7101.9 ± 821.9^a,b,c	97.5 ± 0.4^c	140.4 ± 18.8^b	1.9 ± 0.3^d	37.2 ± 5.0^b	0.5 ± 0.1^b,c
Padina australis
8.0	151.2 ± 53.6^a	126.6 ± 47.3^a	83.0 ± 4.1^a,b	6.4 ± 3.7^a	4.1 ± 1.2^a,b	18.2 ± 5.3^a	12.9 ± 4.4^a,b
7.8	148.3 ± 121.9^a	133.1 ± 111.4^a	86.7 ± 10.0^a,b,c	6.7 ± 8.2^a	3.1 ± 2.3^a	8.4 ± 4.1^a	10.2 ± 11.2^a,b
7.6	194.6 ± 67.1^a	185.9 ± 62.9^a	95.7 ± 0.6^c	7.3 ± 2.8^a	3.7 ± 0.2^a	1.5 ± 1.4^a	0.7 ± 0.5^a
7.4	250.4 ± 107.7^a	232.6 ± 101.0^a	92.9 ± 1.5^b,c	13.2 ± 6.3^a	5.2 ± 0.5^a,b	4.6 ± 3.4^a	1.9 ± 1.3^a
7.2	229.5 ± 46.5^a	178.0 ± 38.1^a	77.5 ± 6.4^a	14.5 ± 3.0^a	6.3 ± 0.1^b	36.9 ± 16.0^b	16.2 ± 6.4^b
Sargassum binderi
8.0	528.2 ± 277.0^a,b	499.8 ± 262.7^a,b	94.8 ± 1.3^a,b	11.8 ± 9.0^a	1.9 ± 1.0^a	16.6 ± 9.9^a,b	3.4 ± 1.2^a
7.8	275.9 ± 135.2^a	262.2 ± 126.9^a	95.2 ± 0.9^b	7.4 ± 7.9^a	2.2 ± 1.3^a	6.3 ± 0.9^a	2.6 ± 0.9^a
7.6	224.5 ± 20.0^a	207.8 ± 18.2^a	92.6 ± 0.5^a	5.8 ± 2.0^a	2.5 ± 0.7^a	10.9 ± 1.7^a,b	4.9 ± 0.9^a
7.4	902.6 ± 394.1^b	855.0 ± 370.7^b	94.8 ± 0.8^a,b	24.4 ± 15.6^a	2.5 ± 0.7^a	23.2 ± 10.3^b	2.7 ± 0.8^a
7.2	410.5 ± 124.4^a,b	380.4 ± 115.5^a,b	92.7 ± 1.8^a,b	13.3 ± 7.2^a	3.1 ± 0.9^a	16.8 ± 4.9^a,b	4.3 ± 1.6^a
Sargassum siliquosum
8.0	4417.9 ± 1394.6^a	4174.4 ± 1305.0^a	94.6 ± 0.9^a	212.2 ± 89.7^a	4.7 ± 0.8^a,b	31.3 ± 13.2^a	0.7 ± 0.2^b,c
7.8	5823.3 ± 1681.7^a	5569.9 ± 1641.0^a	95.5 ± 0.8^a	230.5 ± 45.1^a	4.1 ± 0.7^a	22.9 ± 8.5^a	0.4 ± 0.1^b
7.6	2189.7 ± 289.5^a	2031.9 ± 278.4^a	92.8 ± 0.7^b	126.2 ± 16.4^a	5.8 ± 0.4^b	31.6 ± 3.4^a	1.5 ± 0.3^a
7.4	3631.4 ± 2665.1^a	3419.2 ± 2510.7^a	94.2 ± 0.6^a,b	162.2 ± 125.5^a	4.2 ± 0.8^a	50.0 ± 29.9^a	1.6 ± 0.4^a
7.2	4560.5 ± 2448.3^a	4321.6 ± 2324.3^a	94.7 ± 0.5^a	192.4 ± 108.0^a	4.2 ± 0.5^a	46.4 ± 17.6^a	1.1 ± 0.2^a,c
Turbinaria conoides
8.0	9116.5 ± 2781.1^c	6947.3 ± 2343.9^c	75.5 ± 8.3^a	121.4 ± 43.6^a,b	1.3 ± 0.4^a	2047.8 ± 730.3^c	23.2 ± 8.6^a
7.8	3201.6 ± 1743.9^a	2290.5 ± 1030.3^a	73.6 ± 7.1^a	51.3 ± 35.8^b	1.5 ± 0.3^a	859.8 ± 710.1^a,b	24.8 ± 7.1^a
7.6	7434.9 ± 2412.1^b,c	5689.9 ± 2281.9^a,b,c	74.9 ± 6.9^a	167.2 ± 40.6^a	2.4 ± 1.1^a	1577.8 ± 339.2^b,c	22.6 ± 6.4^a
7.4	4245.0 ± 305.9^a,b	3261.6 ± 299.0^a,b	76.9 ± 4.7^a	117.2 ± 64.9^a,b	2.7 ± 1.3^a	866.2 ± 264.2^a,b	20.4 ± 5.8^a
7.2	7052.0 ± 2378.5^a,b,c	6509.4 ± 2284.4^b,c	92.0 ± 1.6^b	157.0 ± 64.7^a	2.2 ± 0.2^a	385.6 ± 55.9^a	5.9 ± 1.7^b

Notes.

DW: Dry Weight

Values after ± indicate standard deviation between replicates.

n = 4 except T. conoides n = 5.

a, b, c denote homogenous groups (p < 0.05) based on post-hoc Tukey test.

Table 3. Total amount of halogens emitted per g dry weight of seaweeds (ng gDW−1), the amount of bromine (Br), chlorine (Cl) and iodine (I) (ng gDW−1) and their percentage contribution (%) to the total halogen amount during the four hour incubation.

Table 3. Total amount of halogens emitted per g dry weight of seaweeds (ng gDW⁻¹), the amount of bromine (Br), chlorine (Cl) and iodine (I) (ng gDW⁻¹) and their percentage contribution (%) to the total halogen amount during the four hour incubation.