其次，地峡两侧紧密相关的鱼类种群似乎开始在基因上彼此分化。
Second, it appears that closely related populations of fishes on both sides of the isthmus are starting to genetically diverge from each other.
他们在研究过的三个案例中发现西尼罗河热在美国的的流行与鸟类种群密度的下降相关。
Three of the cases they studied found that the rise of West Nile virus in the U.S. corresponded to decreases in bird population density.
很多网站已经使用这种群智(crowd - sourcing)技术来确定搜索结果的相关性。
Websites have tapped into these crowd-sourcing techniques to determine the relevance of search results.
这个种群被认为是呈垂直地带分布的，也就是说，它们的分布和山区环境相关，但不限于此。
it is found associated to, but not restricted to, mountain environments.It is possible that they migrate altitudinally with season.
这与种群的叶面积分布特征密切相关。
This is closely related to the distribution of leaf area of population.
种群密度与平均年龄有线性相关。
But there are linear correlation between population density and mean age.
讨论了一类具终端观测且与年龄相关的非线性时变种群扩散系统的最优分布控制问题。
In this paper, the optimal distributed control problems for a class of age-dependent non-linear population diffusion system with final state observation are studied.
迁入地的浙江各种群属温带型，其雌虫短翅率低且与密度呈显著负相关；
The Zhejiang populations show low brachypterous ratios and have a negative correlation with nymphal density, belonging to the temperate type.
种群特征之间也存在一定的相关世。
There are some correlations between the population characteristics.
种群格局关联维数是种群个体空间关联尺度变化规律的反映，表明了种群个体的空间相关程度。
Correlation dimension of population pattern could reflect not only the scaling variation properties of spatial correlation of individuals, but also the spatial occupation degree of population.
对舞毒蛾卵块的种群动态与温度、湿度等气象因子相关分析。找出了相关系数较大的因子。
Through the relationship analysis between the egg block population and the meteorological factors such as temperature and relative humidity, the good correlation factors are found.
测定了不同温度下莲雾毒蛾各虫态的存活状况，并就卵孵化率、幼虫存活率、蛹羽化率、产卵量和种群趋势指数等指标与温度的关系进行相关性分析。
The regression equations of the rates of hatching, larvae survival, emergence, the egg number laid by a female and population trend indices against temperatures were analyzed.
其中，轮虫种群增长率与食物浓度间呈曲线相关；
The relationship between the population growth rate and the food concentration was curvilinear correlation.
防护林群落主要种群之间的关系以显著性负相关关系为主，种间关系为正关联的种对极少，主要种群之间竞争激烈，人工林主要种群之间的竞争比天然林的种间竞争激烈。
The relationship of the main populations in the community of protection forests was mainly negative association . The species-pairs with positive inter-specific relationship were very rare.
各生育期的星星草种群生殖分蘖株高与花序生物量呈显著正相关，而与生殖分配呈显著负相关。
At each growth stage, tiller height had a significant positive correlation with spike biomass, but a negative correlation with reproductive allocation.
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.
以放牧生态系统为例，本文分析了系统组分种密度相关的种群调节中的正、负反馈和机制。
Taking the grazing ecological systems as an example, the positive and negative feedback of the density dependence population regulations was analysed.
普氏原羚种群数量变化与栖息地质量及人为干扰程度有密切相关。
These changes are related to the quality of animal habitat and the degree of artificial disturbance.
讨论了年龄相关的半线性时变种群系统的最优捕获控制问题。
The optimal harvesting problem for a semi-linear age-dependent time-varying population system is discussed.
在对基于种群的前瞻性队列研究中我们对一个相关性意义(SOC)的假说进行了试验，即对社会压力适应能力的标记与突发中风的相关性意义。
We test the hypothesis that sense of coherence (soc), a marker of social stress adaptive capacity, is associated with incident stroke in a population-based prospective cohort study.
但是，现在显得很清楚的是，所有种群都受“种群密度相关”和“种群密度无关”两类因素在不同程度上的共同制约。
But it now seems clear that all populations are regulated by a mixture of density-dependent and density-independent effects in varying proportions.
同时种群之间的遗传分化与地理距离呈一定的相关性。
The results indicated that there was a positive relationship between genetic differentiation and geographic distance.
利用空间自相关分析检测上述四个种群的空间遗传结构，结果表明，四个种群中的成株均无显著的空间自相关。
Spatial autocorrelation statistics were used to examine the spatial structure of genetic variation. No significant pattern was detected, which suggested extensive pollen flow.
应用地学统计学的原理和方法研究了不同时期棉蚜及龟纹瓢虫种群的空间结构和空间相关性。
The spatial construction and distribution of Aphis gossypii and Propylaca japonica at different period were investigated with geostatistics.
研究了N种群互惠系统的概周期解和渐进概周期解，并得出其相关结果。
This paper is mainly concerned with the problem of almost periodic solution and asymptotically almost periodic solution of the N-species cooperation system and some results are given.
各地理种群的遗传距离与地理距离间不具有显著的相关性。
The genetic distance was not significantly correlated with the geographical distance between populations.
我认为他们已经很好地证明了这一点。周期性气候变化与动物种群中一再发生的我们习以为常的消亡之间存在相关性。
I think they've nicely demonstrated a correlation between periodic climate events and what we'd recognize as normal turnover in fauna that would happen over and over again, Barnosky said.
求解过程中，在基于自适应的文化算法中引入进化规划，有效利用进化过程中相关知识引导种群进化。
The knowledge extracted during evolution guide the evolution of population-space based on evolutionary programming. The design of belief-space for constrained optimization is described in detail.
求解过程中，在基于自适应的文化算法中引入进化规划，有效利用进化过程中相关知识引导种群进化。
The knowledge extracted during evolution guide the evolution of population-space based on evolutionary programming. The design of belief-space for constrained optimization is described in detail.
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