隔离种群

Seed germination characteristics of 7 spatially isolated populations of the endangered plant Euonymus chloranthoides were studied in the laboratory condition.

选取重庆特有濒危植物缙云卫矛7个相互间有不同程度空间隔离的种群，对其种子萌发特征进行研究。

This kind of isolation increases their risk of extinction in the wild, due in part to a higher likelihood of inbreeding .

" "这种隔离增加了他们野外种群灭绝的危险，一部分原因归结于潜在率高的近亲繁殖。

In contrast to the 20th century, the number of orang has decreased by more than 92% or so, and the number in Sumatra, however, decreased half during the period from 1993 to 2000, the left fauna only distributes in some islands, and they will be isolated on and on, thus the "emigrants" of orang remain rare.

与一个世纪以前相比，猩猩的数量已经减少了超过92%，而且在1993年和2000年之间，苏门达腊岛北部的数量就下降了整整一半。剩下的种群仅分布于一些小岛，而且它们将继续被隔离，因为猩猩很少向别处"移民"。

This is different from previous researches, in which long-distance founder effect is the main force of phylogeography of rotifer population.

各湖泊隔离年代比较短，不同湖泊轮虫种群之间扩散强度大，轮虫休眠卵库的存在，以及近几十年来各湖泊环境条件变化可能是造成"有时滞基因流"产生的原因。

Bidens pilosa var. radiata, one of the rapid expanding invasive weeds, has become prevailing throughout Taiwan. A study on the result enhanced by the breakdown of geographic isolation with the native varieties in genetic variation, population structure and introgressive hybrization is really in need. In this study the genetic variation and population structure among the varieties of Bidens pilosa complex were studied using ISSR markers.

在台湾Bidens pilosa种群在外部形态及分布上均非常类似，加上大花咸丰草又属极具侵略性的新归化种，在与其他自生变种又无明显隔离下，是否增加种间之交流与渐渗杂交之机会及对族群结构的影响，实有深入探讨之必要。

Ochotona thibetana; skull; mountains; geographical isolation; population subdivision

母华强，张泽钧，张明春，黄小富，胡锦矗中文关键字：藏鼠兔；头骨；山系；理隔离；种群分化

Mayr also introduced the biological species concept that defined a species as a group of interbreeding or potentially interbreeding populations that were reproductively isolated from all other populations.

迈尔还提出了生物学的物种概念，定义物种为一个杂种繁殖的群体（或潜在地杂种繁殖的群体），与所有其它的种群在生殖上隔离。

After extensive survey of species of Takakia, we couldn't have found any individuals because of its limited population distribution, so we decided to add some relevant studies of conservation genetics to make up for the shortage of this project, including the analysis of effect of stand age and management regime on genetic diversity on Thuidium cymbifolium in Western China, and genetic structure of the endangered insular plant Neolitsea sericea on the Zhoushan archipelago. Results showed that the population of T.

藻苔类植物多分布于高山雪域地带，且范围极为有限，课题组经多次野外搜寻，未能采集到活体材料，而课题实施时间仅有1年，因此课题组同时积极开展云杉人工林林下大羽藓遗传多样性恢复的动态变化，以及岛屿地理隔离对濒危物种舟山新木姜子种群遗传结构的影响等研究，以弥补项目实施之不足。

Sympatric speciation may occur where there is no geographical separation between the speciating populations of habitat preference.

形成同域性物种形成可能发生在没有地理隔离，但具有宿主选择差异，食物选择差异或生境选择差异的种群。

Sympatric speciation may occur where there is no geographical separation between the speciating populations of habitat preference.

同域性物种形成同域性物种形成可能发生在没有地理隔离，但具有宿主选择差异、食物选择差异或生境选择差异的种群。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。