它是控制竞争种群规模的因素之一，在极端情况下，它可能导致一个竞争物种的灭绝。
It is one of the factors controlling the size of competing populations, and in extreme cases it may lead to the extinction of one of the competing species.
比如说，有些模型假设种群规模永远不变。
For example, some models assume that population size never changes.
出于数学运算纯粹性的要求，这些模型都得把种群规模假设为无穷大。
For reasons of mathematical purity, they all assumed an infinite population size.
该方法较原来的随机选择过程简单，且减少了遗传算法的种群规模。
This method is more simple than original stochastic choice process , also reduces the GA population scale.
徐州九里山和新沂窑湾的鹭鸟种群自建群以来，种群规模逐年扩大。
Since the colonization of the heron reproductive population at Jiuli Hill in Xuzhou City and Yaowan in Xinyi City, the group size had expanded year by year.
这些已发现和待发现的物质，可能是控制那些携带疾病的昆虫种群规模的有效工具。
These newly identified compounds, and others that remain to be discovered, might be effective in controlling populations of disease-carrying insects.
科学家不清楚亚洲鲤鱼的种群规模达到多大时才能存活下来，并将骚扰变成真正的威胁。
Scientists don't know how large the Asian carp population would need to get before it becomes self-sustaining and morphs from nuisance into true threat.
同时，对CDPGA中所涉及到的两个参数（竞争种群规模和生命点）进行了讨论。
At the same time, discusses two parameters (population size and life competition points) involved in CDPGA. Finally, chooses some classic functions to test the improved algorithm.
在此基础上，还分析了种群规模、否定域半径等参数数值的选取对算法性能的影响，并给出了参数数值的最优设定。
Then, the paper analyzes some parameters for the effect of the performance of algorithm, gives the optimal set of parameter values.
我们的实验结果表明使用离散逻辑斯蒂模型来控制种群规模的VPGA能够比其他从微观算子上改进的遗传算法更加高效省时。
Experimental results show that VPGA using logistic model population size is more efficient and requires less computation time than other modified GAs which only improve the GA operations.
通过再造林将这两个区域中的任意一处与冈贝连起来，公园里的黑猩猩就会因为基因流动和种群规模的扩大而受益，但它们也可能会因为其他族群的疾病扩散而受到打击。
If either area could be linked to Gombe by reforested corridors, the chimps would benefit from increased gene flow and population size. Then again, they might be hurt by sharing diseases.
在种群调整后，无论是在高科技创业企业的数量上，还是在风险资本产业的规模方面，以色列均位于世界前列。
Adjust for population and Israel leads the world in the number of high-tech start-ups and the size of the venture-capital industry.
个体被发现的时间、地点已经建立模式用于预测种群生存和数量规模。
Patterns of when and where individual animals have been observed are used to estimate survival and population size.
但是，强选择时——正如在大规模种群中——从一开始匆匆建成的这一复杂性更高的基因组的随机变化就受到阻碍。
But when selection is strong - as in large populations - it blocks the random genomic changes that throw up this greater complexity in the first place.
大规模的浮游植物种群，如果持续时间较长，就能够明显降低大气二氧化碳的水平，从而相应降低平均气温。
Large populations of this organism, sustained over long periods of time, could significantly lower atmospheric carbon dioxide levels and, in turn, lower average temperatures.
该研究是对人种群体激素水平进行的最大规模的分析，也是首次大规模对夏威夷土著人和拉丁人进行研究。
The study is the largest analysis of hormone levels by ethnic group, and the first large study of native Hawaiians and Latinas.
分株种群集聚分布格局的规模、强度和纹理在水平空间上与放牧强度的变化表现出一致性的关系。
There were identical changes between seale, intensity, grain of ramet population distribution pattern and the stocking intensity in horizontal space.
最后得出当种群初始规模不同时，系统会达到不同的平衡位置。
At last, we find that the system may have different equilibrium state when the initial scale is different.
这些参数包括：子种群数目、迁移率、迁移规模、迁移选择策略和通信方式等。
Those parameters include the number of subpopulations, migration frequency, migration rates, migration selection strategies and the communication styles, etc.
提出用水泥以及沥青大规模地覆盖土壤对于土壤，特别是土壤表层的微生物种群结构将会造成改变的问题。
A problem is coating the earth with cement or bitumen on a large scale that would change the horde structural of the microbe in soil particularly in the surface layer of soil.
结果表明，阴香幼苗种群呈现集群分布，但在不同生境中种群的集聚强度和格局规模存在明显的差异。
The results show that all the seedling populations displayed an aggregated distribution pattern, but the aggregation intensity and pattern scale were different among the populations.
将种群划分为规模较小的精英子群和规模较大的普通子群。
In the new algorithm, the group was divided into two sub-groups, general sub-group and elite sub-group.
同一群落中的不同种群或同一种群在不同的群落中其集聚强度和格局规模多有不同。
The intensity and scale of the pattern alter among different populations in a community or with the same populations in different co...
这次喷发是一次足以影响全球的大事件，但是它没有引起任何广泛分布的生物种群的大规模灭绝。
This eruption was a massive occurrence with environmental impacts that were felt globally, however, it did not produce mass extinction of any widespread group of organisms.
采用群体遗传学理论与方法研究了陕西省秦川牛场秦川牛保种群30多年来的保种情况，详细地分析了保种群的规模、年龄结构及迁移情况。
Population genetic theory and method were used to study the conservation results of Qinchuan cattle for 30 years plus in Qinchuan cattle farm of Shaanxi province.
采用群体遗传学理论与方法研究了陕西省秦川牛场秦川牛保种群30多年来的保种情况，详细地分析了保种群的规模、年龄结构及迁移情况。
Population genetic theory and method were used to study the conservation results of Qinchuan cattle for 30 years plus in Qinchuan cattle farm of Shaanxi province.
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