7Shen H,. Song L. Comparative studies on physiological re- sponses to phosphorus in two phenotypes of bloom-forming Microcystis[J]. Hydrobiologia, 2007, 592(1): 475-486.
8Martin J H, Fitzwater S E, Gordon R M. Iron deficiency limits phytoplankton growth in Antarctic waters[J]. Global Biogeochemical Cycles, 1990, 4(1): 5-12.
9Martin J H, Fitzwater S E. Iron deficiency limits phyto- plankton growth in the north-east Pacific subarctic[J]. Na- ture, 1988, 331(6154): 341-343.
10Shapiro J. Iron available to algae. Chemical environment in the aquatic habitat[J]. North-Holland, 1967: 219-228.
