Carotenoids and pH of the culture medium play an important role in displaying metal stress in batch and semi-continuous cultures of Anabaena doliolumBhumi Nath Tripathi, Rohini Kasana, Vijeta Singh, Indu Bhatt, Ashutosh Singh, Vinay Sharma and Jai Prakash GaurAnn. Limnol. - Int. J. Lim., 45 2 (2009) 119-125DOI: https://doi.org/10.1051/limn/2009010