（湖泊等）优氧化的水中富有矿物有机物，有利于植物，特别是藻类的增殖，但藻类往往使分解的氧含量过低，从而使别的有机物灭绝。用于指湖泊或池塘 Having waters rich in mineral and organic nutrients that promote a proliferation of plant life, especially algae, which reduces the dissolved oxygen content and often causes the extinction of other organisms. Used of a lake or pond.
孢子囊，精子囊无籽植物，菌类植物和藻类植物的孢子囊 A sperm-producing organ occurring in seedless plants, fungi, and algae.