浮游

Were used; for filter-eeding experiment, the alga used was Nitzschia closterium, and the experimental temperatures were 20, 23, 26, 29℃.Results show that the feeding selectivity of small-ized bay scallop and the oyster increase with algae size:when the algae increased from 4.35m to 11.6m, the feeding rate of bay scallop increased from 4.21%to 11.0%and that of the Pacific oyster from 0.81%to 3.15%.

结果表明，海湾扇贝和太平洋牡蛎的小贝的摄食率随藻类规格的增大而增加；而大贝则表现出明显的差异，海湾扇贝对中等规格（＝5.55—5.79m）的藻类、太平洋牡蛎对小规格（＝4.35m）的藻类具有较高的选择性，表明相同条件下两种贝类对海洋浮游植物群落结构产生不同的影响。

The productivity of Eustigmatophytes and coccolithophorid calculated by the concentrations of 〓 diol and long-chain ketones, respectively, indicate that the paleoceanographic environment and paleoclimate were unstable in Nansha area during the last glacial. The productivity of the two algae fluctuated greatly and was higher during the glacial than that in Holocene.

由〓烷基二醇和长链不饱和酮含量分别计算出的黄绿藻、颗石藻古生产力揭示出南沙海区末次冰期的古海洋环境及古气候是不稳定的，两类浮游藻类的生产力在冰期都出现了较大的波动：黄绿藻、颗石藻的生产力在末次冰期都比全新世高，特别是在H3时都出现了生产力增大的事件。

Combining the dust depositions with the coinstantaneous observations of POC and chlorophyll from the PAPA-sea surface, the relationship between continental dust and marine phytoplankton was discussed.

结果表明，本次强沙尘暴过程可以给PAPA地区带去大约3.1~5.8μg/m3的风成Fe元素，它激发了海洋生物泵，引起海洋浮游植物的快速繁盛。

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。

An oval shaped bar table is built on the marble tile floor corresponsively.

一盏愧丽的水晶吊灯在店中浮游著﹐高贵气派已叫人平静身心﹐大增食欲。

Results show that two species of Isopoda and four species of Cumacea were identified in the samples.

结果表明，调查海域出现浮游等足类2种，其中圆柱水虱Cirolana sp。

Based on data of four seasonal surveys, 1997-2000 data, in the East China Sea (23°30'-33°00'N, 118°30'-128°00'E), this paper deals with species composition, seasonal variation and geographical distribution of pelagic Isopoda and Cumacea.

根据1997～2000年东海(23°30'～33°00'N， 118°30'～128°00'E)海域4个季节海洋调查资料，对东海浮游等足类和涟虫类种类的组成、数量变化及地理分布等特征作了探讨。

Relation between the composition of photosynthesis pigment and the three dimensional fluorescence spectrum characteristic of each spectral group was analyzed. Selecting pure cultures of cyclotella meneghiniana, chlorella vulgaris and...

组分1、组分2和组分3在模1上得分与其在混合样品中的实际相对浓度具有良好的线性关系，相关系数分别达到0.98222，0.97865和0.99788，证实了利用三维荧光光谱和PARAFAC模型分类测量浮游植物浓度的可行性。

In March, May and July, Cyanophyta was the dominant one, with high proportions of 45.6%, 55.9% and 87.7%, respectively, whereas the proportions for Bacillariophyta decreased to 30.1%, 25.9%, and 1.1%, respectively. In November, proportions for Bacillariophyta and Chlorophyta were equivalent, 40% each, and the Cyanophyta composed below 20%. In December, Bacillariophyta made up 25.6% and Cyanophyta 38.2%. In March, May and July, dominant species of Cyanophyta were Microcystis aeruginosa, Pseudoanabaena, and Gloeothece linearis. In dry January, November and December, species of Bacillariophyta were dominated by A chnanthes sp., Melosira ambigua, Melosira granulata and Cyclotella meneghiniana.

全年中，蓝藻与硅藻比例变化较大，二者呈相反的变化趋势。1月份硅藻占较高比例（63.1％），蓝藻较低（〈20％）；3、5、7月份蓝藻比例较高（分别为45.6％、55.9％、87.7％），而硅藻较低（30.1％、25.9％、1.1％）；11月份硅藻与绿藻比例相当（各占40％），蓝藻低于20％；12月份硅藻与蓝藻比例分别为25.6％与38.2％。3月份和丰水期浮游植物优势种主要为铜绿微囊藻、假鱼腥藻和线形粘杆藻等蓝藻种类，枯水期的1月、11月和12月主要以曲壳藻类、模糊直链藻、颗粒直链藻和梅尼小环藻等硅藻种类为优势种。

In this article,Canna,Cyperus and Penisetum were grown in artificial solution contained heavy metals such as lead and chromium to investigate their endurance to the two kinds of heavy metal.The experiment results showed that lead and chromium could decrease the height and biomass of plants even at low concentration of 2.0mg/L.

随着工业的迅速发展，各种工业废水和固体废弃物的渗出液直接排入水体，致使水体中重金属铅(Pb2+)和铬(Cr6+)等含量越来越高[1]，重金属不能像其他有机化合物那样可自然降解或生物降解，往往存在水体或沉积到水域底部或被水生植物浮游植物。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。