When sea stars are removed, species diversity falls sharply.
海星消失后，物种多样性急剧下降。
At one time, ecologists believed that species diversity made ecosystems stable.
生态学家曾一度认为，物种多样性使生态系统变得稳定。
This easterly decline in species diversity is well demonstrated by birds and coral fish.
鸟类和珊瑚鱼很好地证明了东部物种多样性的退化。
Support for this idea came from the observation that long-lasting climax communities usually have more complex food webs and more species diversity than pioneer communities.
支持这一观点的是，长期存在的顶极群落通常比先锋群落有更复杂的食物网和更多的物种多样性。
Species diversity was higher on Yunnan pine than on other seedlings.
云南松幼苗期外生菌根真菌多样性比其它植物幼苗期的高。
Fishes in pelagic area were richer in species diversity but less abundant.
外海区鱼类种类丰富，但丰度较低。
Study on Species Diversity of Subalpine Meadow Communities in Wolong Nature Reserve;
本文在扎龙自然保护区内对鸻形目水鸟的种类、数量及生境进行了调查。
The Grand View Garden in plant species diversity not only, but also in the form of application and the design technique for changing.
大观园中不仅植物种类多种多样，而且应用的形式和造景手法多变。
The research indicated that habitat diversity was the main key factors to control bird species diversity in a certain time and space.
研究表明，在一定时空条件下，地域景观的复杂性是决定鸟类种类和数量的关键因素。
The floristic region of Dian (Yunnan) -Qian (Guizhou )-Gui (Guangxi) has the highest Castanopsis species diversity in China, with 29 species .
中国栲属植物最丰富的地区是滇黔桂地区（29 种） 。
But it is the American Southeast that stands out as a world centerof freshwater-species diversity, especially the southern AppalachianMountains.
而美国东南部地区正是世界上各种淡水动物物种集聚的中心，以阿巴拉契亚山脉南部山区为其中的典型。
But it is the American Southeast that stands out as a world center of freshwater-species diversity, especially the southern Appalachian Mountains.
但是美国东南部，尤其是阿巴拉契亚山脉南部，却脱颖而出成为世界淡水生物聚居中心。
Under moderate water level fluctuations, the species diversity will increase, and perennial water level fluctions play an important role in community succession.
长期的水位变动在植物群落演替上扮演重要的角色。
Phanerophytes(accounted for 76.54%) were dominant in the life-form, which was representative theropencedrymion of the subtropics; The community had very high species diversity.
生活型以高位芽植物占优势（76.54%），是典型的亚热带针阔混交林。
More than half of Southeast Asia's coral species diversity is found in the South China Sea. 75 species of sponges and 118 species of echinoderms in the South China Sea are endemic.
东南亚的珊瑚种类有超过一半的分布在南中国海，75种的海绵以及118种的棘皮类动物属于南中国海的地方特有种。
Screw machine product, while species diversity, but different brands of the difference between technology, are using smaller decide frequency compression technology, homogeneity serious.
螺杆机产品虽然品种多样，但是不同品牌之间的技术差别较小，都是采用定频压缩技术，同质化严重。
The sites contain great species diversity , including the world ' s largest known variety of salmonoid fish and exceptional concentrations of sea otter , brown bear and stellar ' s sea eagle.
景区内物种丰富，除世界现存的最大鲑鱼群外，还集中了罕见的海獭、棕熊和鱼鹰。
When burning occurs, it prevents competition among plant species from progressing to the point where some species exclude others, reducing the overall diversity of the ecosystem.
当发生燃烧时，它阻止了植物物种之间的竞争发展到某些物种排斥其他物种的程度，减少了生态系统的整体多样性。
Given the extraordinary diversity of life on the planet, there must be mechanisms for speciation: the formation of two species from one original species.
考虑到地球上的生命的非凡多样性，一定存在着形成物种的机制：从一个原始物种演变为两个物种。
If we are to truly understand how much our cognitive lives differ cross-culturally, we must continually explore the depths of our species' linguistic diversity.
如果我们要真正了解在不同文化中我们的认知生活有多大的差异，我们就必须不断探索我们物种语言多样性的深度。
Research on the language of numbers shows, more and more, that one of our species' key characteristics is tremendous linguistic and cognitive diversity.
对语言中的数词研究不断表明，我们物种的关键特征之一就是庞大的语言多样性和认知多样性。
Typically, these are regions with a rich diversity of species that all face a similar threat to their environment.
通常情况下，这些地区的物种丰富多样，然而今天它们的生存环境都面临着同样的窘境。
Autumn is usually a good time for immigrant species, but it's the sheer number and diversity this year that's special.
秋季通常都是物种迁入的好时机，但特别的是今年在数量和种类上的陡然增长。
It is also a commendably broad study-covering a diversity of species from parrots to primates.
这也是一项涉及范围广泛、值得赞扬的研究——涵盖了从鹦鹉到灵长类不同物种。
But in the past year half a dozen new tyrannosaur species have been described, and during the past decade the known diversity of tyrannosaurs has more than doubled.
过去的一年里，发现了六个新霸王龙物种。而在过去的十年里所知道的霸王龙种类是之前的两倍多。
The research found seven cat species in a 354-square-mile (570-square-kilometer) range—the highest diversity of cat species yet photographed in a single area.
该研究发现，在方圆354平方英里（合570平方公里）的林区内生存着7种猫科动物，以目前在单个地区拍摄到的猫科动物照片来看，这次发现的种类最多。
The most barren region was behind the ear, with a median diversity of 15 species. In comparison, the forearm teemed with a median 44 species.
细菌贫瘠区时耳朵背面，细菌种群的中位数是15，而在前臂是44。
The tropics boast more than 10 times as many species of animal and plant as the Arctic, with diversity decreasing steadily as you approach the poles.
热带地区繁衍着比北极地带多上数十倍的动植物物种，地理位置越趋向两极，生物的物种就会有直线的减少趋势。
The study, published in the September issue of the Journal of the Geological Society, found that increasing CO2 levels caused foram diversity to fall from 24 species to only 4.
这项发表在《地质学会》杂志9月号的研究发现，二氧化碳含量增加导致有孔虫种类从24个物种减少到只有4种。
The diversity of species of Rhododendron is coherently related to the value of Baili Dujuan Nature Reserve of Guizhou.
贵州西部百里杜鹃保护区的杜鹃属植物种类关系到其保护区的价值。
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