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

Table 2. Pearson Product-Moment Correlation Coefficient analysis between halocarbon emissions produced by five tropical seaweed species at decreasing pH values.

Halocarbon compound	Kappaphycus alvarezii	Padina australis	Sargassum binderi	Sargassum siliquosum	Turbinaria conoides^d
CHBr₃	0.29^NS	−0.37^NS	−0.13^NS	0.15^NS	−0.03^NS
CH₂Br₂	0.34^NS	−0.21^NS	−0.20^NS	−0.23^NS	0.11^NS
CH₃I	−0.56^a	−0.62^e	na	−0.63	0.00^NS
CH₂I₂	na	0.12^NS	−0.32^NS	−0.33^NS	0.66
CH₂BrI	0.63	−0.47^c	−0.27^NS	−0.31^NS	0.52
CH₂BrCl	0.06^NS	−0.39^NS	−0.27^NS	−0.37^NS	−0.25^NS
CHBrCl₂	−0.71	−0.57	−0.13^NS	0.28^NS	−0.14^NS
CHBr₂Cl	−0.53^b	−0.43^NS	−0.36^NS	0.21^NS	−0.32^NS

Notes.

(p ≤ 0.01 unless otherwise stated).

CH₃I (p ≤ 0.02).

CHBr₂Cl (p ≤ 0.02).

CH₂BrI (p ≤ 0.05).

n = 20 but for T. conoides n = 25.

log values for CH₃I emissions from P. australis were used prior to analysis.

^NS

non-significant.

pH value is changed from 8.0, 7.8, 7.6, 7.4 to 7.2; na, not available