• 由于个体化石数量统计随着时间的推移而变化研究生物灭绝古生物学家们更倾向于对称为的有相互联系的整个物种种群进行统计研究。

    Rather than counting individual species of fossils,which vary over time, palaeontologists who study extinction usually countentire groups of related species, called genera.

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  • 当时人数甚至不及现在濒临灭绝黑猩猩(21000头)大猩猩(25000头)的有效种群大小生育个体数量)。

    That number is smaller than current figures for the effective population size (or number of breeding individuals) for endangered species such as chimpanzees (21, 000) and gorillas (25, 000).

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  • 个体发现时间地点已经建立模式用于预测种群生存数量规模

    Patterns of when and where individual animals have been observed are used to estimate survival and population size.

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  • 考虑这些不确定繁殖能力灭绝可能如果个体数字一个种群数量超过50并且种群数量在增长。

    Taking only this uncertainty of ability to reproduce into account, extinction is unlikely if the number of individuals in a population is above about 50 and the population is growing.

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  • 应用优化算法高度并行、种群个体收敛高度一致特性,较好的解决高维统计计算样本数量计算时间、样本数量样本质量之间难以协调的问题。

    The problems of harmony between sample number and calculation time, as well as between sample number and sample quality in higher order statistics calculation were achieved.

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  • 沟谷热带雨林群落结构功能(光合生产)稳定性是以多个物种种群以及层次个体数量相对稳定来维持的。

    The stability of structure and function (photosynthesis production) of the ravine tropical rain forest is maintained by a lot of tree populations, and relative constancy of individuals in each layer.

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  • 沟谷热带雨林群落结构功能(光合生产)稳定性是以多个物种种群以及层次个体数量相对稳定来维持的。

    The stability of structure and function (photosynthesis production) of the ravine tropical rain forest is maintained by a lot of tree populations, and relative constancy of individuals in each layer.

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