6 . the biodiversity of phytoplankton had risen slightly since 1990 ' s , but the biodiversity of zooplankton , as a key link in the food chain , had been falling in the same time 胶州湾的浮游植物多样性指数虽然自90年代以来处于上升趋势,但作为食物链中重要环节的浮游动物的多样性指数却处于持续下降状态。
During the 20 - day expedition , 28 experts from 14 nations collected 1 , 000 individual specimens , including 120 species of fish , some new to science , and hundreds of species of zooplankton 在20天的探测中,来自14个国家的28位专家,采集了1000份标本,其中包括120种鱼类,一些科学上的新物种,以及数百种浮游动物。
The variation of nutrients in the survey area is mainly controlled by the combination of changjiang dilute water , taiwain warm current and the activity of plankton as well , and the control mechanism of nutrients also shows a seasonal variation in the survey area 42 . 52 . 6于促进硅藻的生长,较低则相对有利于甲藻生长:同时加磷对小型浮游动物的生长也有一定的从促进作用。
High - latitude calcareous phytoplankton and zooplankton might share a similar fate , although their declines would come decades later because their shells are formed from calcite , the less soluble form of calcium carbonate 高纬地区的钙质浮游植物和浮游动物可能有相似的命运,虽然它们受到影响的时间也许会晚数十年,因为钙质浮游生物的外壳由方解石形成,这种碳酸钙矿物结晶比较不容易溶解。
2 microzooplankton of jiaozhou bay were composed chiefly of neritic warm - temperate and estuarine low - salinity species . eurythermic and euryhaline species were sparse . cold - water , oceanic hypersaline and tropical warm - water species were not found during the study period 2 、胶州湾小型浮游动物以暖温带近岸、河口低盐种为主,广温广盐种较少,尚未发现冷水种、外海高盐种和热带暖水种。