7 in comparison with other gulf waters in the world , densities of microzooplankton and loricate ciliates in jiaozhou bay were at intermediate level 7 、与世界其它海湾水域相比,胶州湾小型浮游动物的总平均丰度和砂壳纤毛虫的丰度,处丁中等水乎。
The average density and biomass of zooplankton were 1391 . 63 ind . / l and 2 . 27 mg / l , respectively . most of the predominant species are indicators of eutrophication 0xl夕cen口ml ;随水体中n 、 p浓度的增加而增加,随浮游植物密度的上升而下降,与浮游动物密度的变化趋势相反。
In chinese north cities , more than 70 % of drinking water resource is surface water which has been seriously polluted by organic matters and algae 我国北方城市水源70以上为地表水,有机物污染严重,藻类大量繁殖,各种浮游动物孳生,常规处理工艺无法满足安全饮用水供应的需要。
She says this research will provide a baseline for measuring how pollution , overfishing , climate change and other human activity affect zooplankton and their environment 她表示,经由这项研究所获得的基础资料,将是未来测量污染、过渔、气候变迁、人类活动如何影响浮游动物及其环境的依据。
The annul change of the amount , the biomass of the zooplankton community and the effects of temperature , ph on the amount of the zooplankton community were studied 对浮游动物进行种类鉴定,确定了常见种和优势种,研究了浮游动物群落数量和生物量的周年变动以及温度、 ph值对浮游动物群落的影响。