生物类群

虾虎鱼类作为一个庞大的生物类群，在其水生态环境中扮演着重要的角色。

As a huge biological group , gobies play an important role in the water ecological environment .

大型底栖动物是湿地和海洋生态系统的重要生物类群，广泛分布于底栖区，其群落的演替可以反映生态系统的健康状况。

Macrobenthos is an essential biological group of wetland and marine ecosystems and they have a broad distribution in the benthic area . The succession of their community can reflect the health condition of the ecosystem .

已有的工作显示，Lagrange乘子在不同生物类群中系统性地改变。

Previous work has showed that the Lagrange multipliers changed systematically from species to species .

在水环境质量变化评价与发展趋势预测中，与其它较高等生物类群比较，PFU原生动物群落在水质监测应用方面显示了诸多优点。

PFU protozoan communities play the substantial role and show the clear advantage in bio-monitoring with relation to water quality .

草地沙化，土壤生物类群及数量逐渐减少，生物活性逐渐下降。

The activity of soil biology decreased gradually in the process of grassland desertification .

它们承受的生存压力在其他生物类群中也同样存在，有效保护江河水生物资源已是刻不容缓的事情。

It is an urgent affair to protect fresh - water living creature resources effectively .

湿地生态系统在界面、景观、生物类群和生物地球化学循环等几个方面具有不同于其他生态系统的特征。

Wetland ecosystem has its own particular characteristics in the interface , landscape , bio-population and biogeochemical cycle .

与种面积关系一样，嵌套结构在很多生境类型和生物类群中也都存在。

Like the species_area relationship , nested structures are observed in many types of habitats and in many taxa .

通过2004年9月至2006年3月近两年的调查研究，已发现危害银杉的病害3种，害虫18种，其它有害生物类群2类；

Via two years research from September 2004 to December 2005 , 3 diseases and 18 pests have been found ;

化学污染已使生命系统受到严重威胁，使越趋增多的生物类群处于维持生存的亚极端环境之中。

Life system has been threatened by chemical pollutions and more and more organism populations were living in sub-extreme environment .

这个序列是储存在核糖体数据库中，通过生物类群分类微生物。

The sequences , stored in the Ribosomal Database Project , were compared to classify the microbes by biologic taxa .

利用稳定碳同位素分析技术研究了南沙渚碧礁生态系食物网主要生物类群之间的营养关系。

Trophic relationships among various organisms from Zhubi coral reef ecosystem in Nansha Islands were studied by stable carbon isotope technique .

海洋贝类养殖网笼污损生物类群的研究海洋贝类几种危害性纤毛虫的研究

Study on Species Composition of Fouling Organisms on Mariculture Cages Study on some pathogenetic ciliates from the mantle cavity of marine molluscs

综述了环境激素对各生物类群和人类生殖机能和其它方面造成的影响，并就防治环境激素污染提出了一些建议。

The impacts from the environmental hormones on biology and human beings are summarized , and some suggestions on environmental hormones control are put forward .

微生物作为自然界里个体最小，数量最大，分布最广，种类最多的生物类群，在水体净化和水环境物质循环中有着不可替代的重要作用。

As a biological species with the smallest body , largest quantity and most widely distributed , microbes played an irreplaceable and important role in water environment .

结果显示：土壤原生动物作为生物圈中的重要组成部分，在能量流和物质循环中起着其它生物类群无法替代的作用；

It shows that as an important component of biosphere , the soil protozoan plays the roles in the energy flow and material cycles on the earth , which can not subtitled by the other organisms .

翅的发生使昆虫在觅食、寻偶、扩大分布和避敌等多方面获得了优越的竞争能力，是昆虫纲成为最繁荣的生物类群的重要原因。

The wings of insects make them taking many advantages in predation , mate choice , expanding distribution and safe-keeping , and so on . This is the most important reason for them to become the most prosperous organism .

数值分类学通过对研究对象的形态特征数据进行聚类分析，定量分析生物类群在地理分布上的状况，阐明生物对栖息地地理环境的关系性，从而找出生物类群在地理分布上的规律性。

Numerical taxonomy clarifies the relationship between living materials and their habitat geographical environment through the cluster analysis of the morphology data and quantitative analysis of biological groups in the geographical distribution of the situation , to find the regularity of biological groups in geographical distribution .

作为生物的主要类群之一，细菌是大自然界中生物种群数量最多的一类。

AS one of the main groups of biological , bacteria is the largest class species in nature .

按生物量，优势类群依次为多毛类（占29%）、桡足类（23%）和线虫（20%）

Based on the biomass , polychaetes ( 29 % ), benthic copepods ( 23 % ) and nematodes ( 20 % ) were the main groups .

但是，对其最为基本的微生物学特性&粘细菌中唯一能够降解纤维素、半纤维素等生物大分子的类群，相关研究则涉及很少。

However , very few studies have been focused on the activity of degrading biomacromolecular materials , such as cellulose and hemicellulose , which is the unique and basic property of S. cellulosum among the myxobacteria .

20世纪下半叶以来由于长江大型水利工程建设及其他人类活动的影响，长江生物资源产生了巨大的变化，一些重要的生物类群受到胁迫。

Since second half leaf in 20 centuries because of the influence between the construction of large-scale water resources projects in the Yangtze River basin and other human activity , some important living creature cluster suffer to coerce .

基于生物的遗传距离所建立的分子进化速率，可用于进一步推测不同生物类群在进化历史上的分歧时间。

Based on genetic distances , molecular evolution rates established by the hypothesis of molecular clock can be used to deduce the origin or divergence time of different organism taxa .

云南是世界十大生物多样性热点地区之一的东喜马拉雅地区的核心区域，生物种类及特有类群之多均居全国之首。

Yunnan has the most biology species in China and is one of ten hot biodiversity regions of the world , which is the key region of eastern Himalayas .