Howard D L, Frea J I, Pfister R M, Dugan P R
Science. 1970 Jul 3;169(3940):61-2. doi: 10.1126/science.169.3940.61.
Biological nitrogen fixation, as determined by acetylene reduction, occurs in Lake Erie. Fixation potential by blue-green algae in situ in water and by bacteria in collected sediments was demonstrated. Nitrogen-fixing activity occurred from June through November suggesting that it is significant over the extremes of seasonal variation in light, temperature, and nutrients.
通过乙炔还原法测定发现，伊利湖存在生物固氮现象。研究证实了水体中蓝藻以及采集沉积物中细菌的固氮潜力。固氮活动发生在6月至11月期间，这表明在光照、温度和营养物质季节性变化极大的情况下，固氮活动仍颇为显著。
