查询词典 phytoplankton

It is shown from the assessment results that (1) both the TN and TP fluxes discharged from the Changjiang River to the Changjiang River estuary sea area increased continuedly, the DIN concentration in the sea areas increased continuedly, and the Si concentration decreased continuedly, which resulted in the significant changes in N/P/Si ratios;(2) the chlorophyll a concentration in the sea areas increased continuedly, and the significant changes in community structure of phytoplankton occurred;(3) the species and biomass of benthos declined greatly, and the bottom oxygen-poor water area increased significantly;(4) the range and occurrence frequency of red tide events in the sea areas increased greatly, and the algal toxic infection events of mussel were frequently found in the sea areas.

结果表明，长江向长江口海域输送总氮和总磷通量持续增大，长江口及其邻近海域无机氮浓度持续增高而硅浓度持续下降，并由此导致N/P/Si与比值的显著变化；该海域叶绿素a浓度持续增大，浮游植物群落结构也发生了显著变化；该海域底栖生物种类和生物量都大大减少，底层水低氧区面积也显著扩大；该海域赤潮事件无论是规模还是频率都大大增加，藻类毒素DSP/PSP贻贝传染事件也时有发生。

From Chaotianmen to Zigui,the Shannon-Weaver diversity index of phytoplankton changes undeely.4 the impact of sediment deposition on zooplankton in the waters studiedAccording to the results of the experiment, we had learnt that the species composition of zooplankton sampled had the same tendence-the species was from less to more, and the biomass was also gradually increasing. Particularly Copepoda had increased significantly in the type and quantity. The main of zooplankton at each sampling situs were protozoa and rotifers.

朝天门江段到秭归江段的浮游植物的Shannon-Weaver多样性指数呈波浪式变化，整体有下降趋势。4研究水域泥沙沉降对浮游动物的影响从本次实验的结果来看，四次采样浮游动物种类组成都有同一个趋势：种类由少到多，生物量也逐渐增大，特别是桡足类在种类和数量上都增加明显，各采样点的浮游动物以原生动物和轮虫为主。

The cell density of phytoplankton was 41150×10~4/L,increased by 62.88 times from 1987. Microcysis、 Oscillatoria、 Scenedesmus、 Chlorella、 Cyclotella and Melosira ,the eutorphicational or hyper-eutrophicational indicator species, were the dominant species of phytoplanton in Chang River.

优势种群为微囊藻、颤藻、栅裂藻、小球藻、小环藻、直链藻，均为富营养型或重富营养型水体指示种群。

Since the quantity of nutrients was higher in 1999 than 1997, it was considered that decrease in these phytoplankton was due to Daphnia grazing.

自99年营养盐含量较高以来，浮游植物减少被视为溞类的摄食所致。

Thrissakarnrnalensis was the basal pelagic phytoplankton feeder,while Trachurus japouicu was commonly feed in seagrass circumstance.GC/C-IRMS analysis was applied to fish,zooplankton and demersal species.

建立GC/C-IRMS技术测定生物体单分子脂肪酸碳稳定同位素的方法，应用于长江口毗邻海域主要生物种类带鱼、小黄鱼、黄鲫等海洋鱼类，桡足类、箭虫、水母等浮游动物，中国毛虾、周氏新对虾、中华管鞭虾等底栖生物的研究。

C, N, P and fatty acids compositions were determined in major biology of food webs based on anchovy including phytoplankton, zooplankton, Engraulis japonicus and other fishes such as Scomberomoms niphonius, Pseudosciaena polyactis in Yellow Sea.

本研究分析黄海以鳀鱼为基础食物网中主要生物的碳、氮和磷元素组成以及脂肪酸在组成，包括处于第一营养级的浮游植物、第二营养级浮游动物、鳀鱼以及蓝点马鲛、小黄鱼等鱼类。

The phytoplankton can be divided into five components: a fresh water component inside the river mouth, a true estuarine component, a coastal component, a euryhaline marine component, and a high salinity component.

长江口的浮游植物基本可归为5个类群：淡水类群，河口半咸水类群，近岸低盐性类群，外海高盐类群，海洋广布性类群。

One hundred and fifteen species were identified, among which coastal eurythermic species were predominant, showing obvious characteristics of subtropical population fauna. The results showed that the average abundance of phytoplankton in Shacheng Harbour was 3113.24 ind·L-1. The abundance was higher in the inner bay than that in the outer bay in horizontal distribution. The surface abundance was a little higher, but there was no significant gradient in different water layers in vertical distribution. Shannon-Wiener diversity index, Margalef richness index, Pielou evenness index and Simpson dominance index were 2.390, 2.650, 0.726 and 0.306, respectively.

结果表明，该次调查共出现浮游植物115种，种类以沿岸广温广盐性种为主，并呈现较为明显的亚热带海湾种群区系特征，浮游植物的平均丰度为3 113.24 ind·L-1；水平分布上，呈内湾高于外湾的格局；垂直分布上，表层丰度略高，不同水层的分布梯度不明显；Shannon-Wiener多样性指数、Margalef丰富度指数、Pielou均匀度指数和Simpson优势度指数分别为2.390、2.650、0.726、0.306。

The results showed that: three major peaks,humuslike fluorescence peak A,proteinlike fluorescence peaks B and C appeared on the threedimensional fluorescence spectroscopy;the DOM fluorescence intensity was well related with DOC and CODMn,indicating that fluorescence dissolved organic matter content can reflect both the organic carbon content and the organic matter content by oxidation in the water in August,during the nonalgae bloom outbreak period,fluorescence intensity had a poor correlation with chlorophyll a,indicating that phytoplankton was not the main source of the fluorescent substances.

结果显示：小江回水区DOM的三维荧光光谱主要表现出3个峰，类腐殖质荧光峰A、类蛋白荧光峰B和C；DOM荧光强度与DOC、CODMn相关性较好，表明荧光溶解有机物质的含量可以较好反映水体中有机碳和可被氧化有机物的含量；在8月份非水华暴发时期荧光强度和叶绿素a相关性较差，表明DOM荧光物质主要不是由浮游植物产生。

Of peak zooplankton abundance, that is,in the late spring and in the summer,(70) munity grazing rates, for nutrient-poorlakes and bog lakes, respectively,phytoplankton production.

在浮游动物数量激增的高峰期，亦即在春季后期以及夏季，哈尼记录了最大程度上的每日群落食草比率，对于营养物不充足的湖和沼泽湖而言，分别为每日浮游植物繁殖量的6.6%和114%。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。