Ulva lactuca as bioindicator of metal contamination in intertidal waters in Hong Kong

aguas fecales algae cadmio cadmium cinc cobre contamination copper cuivre desechos industriales fer heavy metals hierro hong kong indicator organisms industrial wastes intertidal environment iron manganese manganeso metales pesados milieu intertidal nickel organisme indicateur organismos indicadores sewage zinc zona de intermarea