这些返祖性状提供了优势，并在种群中传播，有效地逆转了进化。
These atavistic traits provided an advantage and spread through the population, effectively reversing evolution.
尽管第一个长出木本的植物体积很小，但接下来的其他植物种群便能够因此迅速从木本结构优势种获利，仅仅几百万年的时间，其中一些具有木本的植物便进化得像现在的树一样了。
Although the first plants sporting wood were small, subsequent species quickly took advantage of wood's structural strength: in just a few million years, some had attained treelike stature.
有生长优势的细胞能迅速繁殖，成为优势种群。但是，这通常是由基因突变引起，并不是我们所期望的正常生长。
Cells with a growth advantage expand faster and dominate. However, this can come at the price of genetic mutation, so growing fast is not always desirable.
当社会没有达到了马尔萨斯理论的限度，像那些在人口统计学优势范围中的种群，群体动力学就较少的表现出零和思想。
When societies are not at the Malthusian limit, such as those groups which are the wave of demographic advance, between group dynamics may be less characterized by zero-sum thinking.
系统内发生丝状菌污泥膨胀后，微型动物种类减少，主要优势种群为轮虫、累枝钟虫、表壳虫。
After filamentous bacterium bulking the number of microbiota decreased, and rotifers, epistylis and arcella became the main population.
掌握寒地水田杂草发生种类及优势种群，对制定杂草综合治理方案，科学选用化学除草及其配套技术具有指导意义。
Grap the cold-field paddyfield's characteristic and preponderant colony have the directive sense to constitute father's precept of weed, choose chemic weed scientific and its measure.
同时，搜索范围的缩小间接地提高了优势基因的利用率，增强了种群的局部搜索能力。
Meanwhile, shrink of the search scope indirectly improves the utilization of advantageous gene and enhances the local search ability of population.
芦苇和虉草种群是北固山湿地中的优势种群，在北固山湿地生态系统中发挥着重要的作用。
Phragmites australis and Phalaris arundinacea populations are dominant populations in the wetland, which play important role in the Mount Beigu wetland ecosystem.
试验结果表明：水体增温对水库浮游植物的种群组成、优势种的优势度、藻类密度和生物量均有影响。
The results of investigation and indoor simulated test showed there were effects of increased water bodies temperature on the structure, dominant, density and biomass of phytoplankton community.
无性系潜在种群是由0龄级的根茎芽和1 龄级分蘖株芽所组成，其中以0龄级芽占绝对优势，达84.8% 。
The potential clone population consist of rhizome buds of 0 age class and tillering node buds of 1 age class, of which 0 age class constitute the majority, 84.8%.
人工禾草群落间优势种群的重叠程度越大，群落的相似程度越高。
The similarity of different communities increased with the overlap extent of the grass compositions of the communities.
高度级和基径级分析表明群落内中等大小个体具有保守的生活史策略， 优势种杜鹃为远期衰退种群。
The analysis of height and base area classes of the shrub layer indicated mid-size individuals had conservative life strategies in this community, and R. simsii was a future declining population.
模拟分析了繁殖群体大小、繁殖偏倚和占群优势雄性数目对麋鹿的有效种群大小的影响。
We simulated the impacts of breeding herd size, reproductive skew and numbers of breeding stags on the inbreeding coefficient of Père David's deer.
异尖科宫脂属线虫为黄海鱼类线虫的优势种群。
As mentioned above, the fish nematodes from Yellow Sea has a low species richness.
对湖北省应山自然保护区蝶类资源进行调查研究 ，共发现蝶类 68种 ，隶属8科45属 ，其中豹蛱蝶亚科的蝶类为保护区蝶类中的优势种群 。
By the survey of butterflies in Hubei Ying mountain natural preservation fields, 68 species of butterflies are recorded, belonging to 45 generns and 8 families.
其园林蚜虫的优势种群在种类、数量上都发生了很大变化，而且这些变化与武汉地区园林植物结构的调整密切相关。
The garden of the dominant species in the aphid species, the number of great changes have taken place, and these changes in landscape and plant in Wuhan is closely related to the restructuring.
烟粉虱、蓟马和蚜虫是草莓苗圃节肢动物群落的优势种群。
Monitoring of population dynamics of main insects in strawberry nursery;
结果表明：丝栗栲群落及其优势种群个体数、群落物种数和种对级的分享度随高度级增加都呈下降趋势；
The results indicated that the individual number of the community and its dominant, species number and sharing degree decreased as highness classes raised;
建议抓住优势种群发生高峰期，制定白蜡虫天敌寄生蜂的有效控制措施。
A suggestion was given to designate the control strategy about the parasite wasps on the white wax insect.
建议抓住优势种群发生高峰期，制定白蜡虫天敌寄生蜂的有效控制措施。
A suggestion was given to designate the control strategy about the parasite wasps on the white wax insect.
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