Nutrient composition of four algae in Fujian mangrove areas

The analysis of nutrient compositions for Bostrychia mixta,Catenella impudica,Caloglossa leprieurii and Enteromorpha compressa that grow in Fujian mangrove areas shows that concentration of Feor Mnin these four algae is much higher than the mean concentration of Fe or Mn in common algae;concentration of Ca is lower than mean concentration of Ca in common algae;concentration of P,K,Mg is higher or lower than mean concentration of P,K,Mg in common algae.The range of concentration of total amino acids (TAA) among 4 algae is Enteromorpha compressa(DW) 265.89 mg/g > Bostrychia mixta 211.96 mg/g > Caloglossalep rieurii 189.53 mg/g > Catenella impudica 111.10 mg/g;the range of concentration of essential amino acids(EAA) is Bostrychia mixta 87.42mg/g > Enteromorpha compressa 82.92 mg/g > Caloglossa leprieurii 73.62 mg/g > Catenella impudica 34.41 mg/g.The TAA or EAA concentration in Caloglossa leprieurii growing on the buttress-like root surface of K andelia candel is higher than that on rocky surface near the Kandelia candel forest in March and June,respectively.Concentrations of chemical elements in Caloglossa leprieurii growing in the different habitats change with March and June.