Experimental study on effectiveness and influencing factors of biological denitrification via oligotrophic biofilm system .

贫营养生物膜系统脱氮效果及影响因素实验研究。

Oligotrophic waters that are relatively low in nutrients and cannot support much plant life , such as the open oceans and some lakes .

营养质相当低且不能够支撑很多的植物生活的水域，例如开放性海域与一些湖泊。

The key point is that the gulf of eilat is an oligotrophic sea , a sea that does not have nitrogen at all , loya explained .

洛亚解释道：“关键是埃拉特海湾是一片营养贫乏、完全不含氮的海域。”

The extremes of the ranges represent relative oligotrophic and eutrophic conditions .

范围的极限代表相对寡营养和富营养的条件。

Significant year-round effect of small mixotrophic flagellates on bacterioplankton in an oligotrophic coastal system .

在寡营养的沿岸海域系统中，年间小型的混营性鞭毛虫对浮游性细菌的显著影响。