生物量

Four isolates, SP4, SP5, BEG 167 and BEG 141. were selected from the 17 tested isolates. The effectiveness of the isolates was related to ecological attributes such as the number of propagules formed in the soil.

以宿主植物的生物量、产量及吸磷效应作为筛选高效菌株的主要标准，在所用的17个菌株中，选出SP4、SP5、BEG167和BEG141为高效菌株。

The researchers say forest area and bial mess are still being lost in such important countries such as Brazil and Indonesia, of they found gains in others, including the world's most populars nations.

研究者们说森林面积和生物量在一些重要的国家中还在流失，比如巴西和印度尼西亚。但他们也在其他国家发现了增长，包括世界上人口最多的国家。

In this study, the green alga Haematococcus pluvials were respectively and simultaneously exposed to active oxygen reagentsMB, H_2O_2 solution, and mixed solution of H_2O_2 and Fe~(2+ to study the physiological variety and characteristic of astaxanthin accumulation by determining cell density, chlorophyll-a content, biomass and the astaxanthin content.

为了探索活性氧诱生剂对雨生红球藻生长及虾青素含量的影响，设计了在雨生红球藻藻液中分别和组合添加亚甲基蓝(MB，产生~1O_2)、过氧化氢溶液(H_2O_2)以及过氧化氢和二价铁离子的混合溶液的实验，测定了细胞密度、叶绿素a含量、生物量和虾青素含量等指标。

Our field research was the first time to compare the biomass and production of phytoplankton and periphyton before and after the removal of oyster-culture pens at a scale of whole lagoon.

本研究是第一篇藉由大尺度牡蛎养殖移除的野外实验，比较有、无牡蛎养殖对於浮游藻类及附生藻类生物量及生产力的差异。

In order to reveal the effects of tilapia on phytoplankton and periphyton, an experiment with two treatments, one with tilapia and one without tilapia (non-fish group) was carried out, and the biomass of both phytoplankton and periphyton was analyzed.

为了解罗非鱼对浮游植物和附着藻类的影响，实验在室外模拟条件下，分别设置罗非鱼组和无鱼对照组的两组处理，分析了罗非鱼对附着藻类及浮游植物生物量等的影响。

The results showed that removal effect of periphyton on nitrogen was significant.Cumulative removal ratio of nitrogen was up to 60%,the nitrogen concentration decreased from 5 to 2 mg /L or so within two weeks.Cumulative removal ratio of nitrogen was closely related with nitrogen concentration,working time and biomass of periphyton.

结果表明，附着生物对水体中的氮有显著的去除效果，半个月内，附着生物对水体中总氮的累积去除率可达60%，在有附着生物的水体中总氮浓度从5 mg/L左右下降到2 mg/L左右；附着生物对水柱中氮的累积去除率和水柱中氮的浓度、附着生物的生物量以及附着生物作用时间密切相关。

The results showed that the species number of periphyton was the greatest in summer and the density of dominant species was the highest in summer and autumn, and the water quality was generally consistent with the tendency of the changes both in the indices of diversity and evenness. There were significant negative correlations between the contents of N and P in water, and the indices of diversity, evenness, algae density, total biomass, while CODcr and BOD5 did not show any significant relationship with these four biological indices.

研究结果显示，着生生物种类数以夏季最多，优势种密度以夏、秋季最大，多样性指数、均匀度指数的变化趋势与水质指标的监测结果基本一致；经相关性分析表明：水体中氮、磷含量分别与生物多样性指数、均匀度指数、藻类密度和总生物量四项指标呈显著负相关， CODcr、BOD5与四项生物指标均无相关性。

During the experiments,filamentous periphyton growed well in sewages,and its biomass was increased signicantly with nitrogen and phosphorus removal rates.The maximum removals of NH_4~+-N,NO~(3-)-N,TN,PO_4~(3-)-P and TP were occurred as the Chla concentrations were 1.14,1.01,1.00,0.84,and 1.02 mg·g~(-1),respectively.

试验期间，丝状周丛藻类能很好地适应污水环境，其生物量和氮、磷去除率显著相关，NH_4~+-N、NO_3~--N、TN、PO_4~(3-)-P和TP的最高去除率分别出现在Chla浓度为1.14、1.01、1.00、0.84和1.02 mg·g~(-1)时。

Nested ANOVA test showed the variance of GCPP mainly occurred among sites rather than within periphyton. Diatoms increased with the GCPP. There is a significant positive relation between the dissolved inorganic nitrogen in the water column and GCPP of periphyton.

GCPP的时空变化与底栖微藻在附生藻类生物量中所占比例和水体中的无机氮浓度有非常显著的正相关性，初步推测大鹏湾的GCPP可能是受到水体中氮的限制而有GCPP之时空变化。

When the TN:TP ratio was 25:1,V.spiralis had the best growth, with a biomass increment being 54% and 31% higher than that when the TN: TP ratio was 12.5:1 and 50:1, respectively, while the growth of periphyton, especially of epiphytic algae, was the worst, giving the least adverse effects on V. spiralis, indicating that a 25:1 of TN:TP ratio in eutrophic water was optimal for the growth of V. spiralis. However, such an optimal TN: TP ratio only worked when the nutrients concentration in eutrophic water was below the limited level, otherwise, it could be failed to be applicable.

结果表明：当TN/TP为25：1时，苦草的生长状态最好，苦草生物量的增长率最大，分别高于TN/TP为12.5：1和50：1时的54%和31%；当TN/TP为25：1时，附着生物尤其是附着藻类的生长状态最差，对苦草生长的不利影响最小；可见，富营养水体中适宜于苦草生长的TN/TP为25：1；TN/TP为25：1这一比例的应用具有相对性，当水体营养浓度低于限制水平时，该比例适用，如果水体中营养盐浓度超过限制水平时，该比例则不适用。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。