Some cultivated seaweeds such as Laminaria japonica, Gracilaria lemaneaformis and Porphyra yezoensis are of very high productivity and may absorb large quantities of C, N, P.

• 海带、龙须菜、条斑紫菜等大型海藻,生产力很高,在生长过程中可大量吸收C,N,P等生源要素,在水生态系统碳循环和减缓富营养化方面有很重要的作用。