Table 9.

Statistically significant correlations between antimicrobial activity and phytochemical content of dichloromethane extracts and the heavy metal content in the investigated seaweeds

Correlations (r) between analyzed parameters, significant at p ≤ 0.05
AVG	AI (r = 0.9996); Cu (r =  − 0.9941); Ni (r =  − 0.9029); Se (r = 0.924)
AI	Cu (r =  − 0.9912); Ni (r =  − 0.902); Se (r = 0.933)
Fe	V (r = 0.8854)
Mn	Cu (r =  − 0.8959); Ni (r =  − 0.8852); Cd (r = 0.9955)
Zn	Phenols (r = 0.9299)
Cu	Se (r =  − 0.8938)
Cr	Ni (r = 0.8892); Pb (r =  − 0.9833); As (r = 0.8825)
Ni	Pb (r =  − 0.9512)
Se	Ba (r = 0.9158); tannins (r = 0.8833)
Ba	Tannins (r = 0.9855)