结果编制出扁蓄野生种群的动态生命表。
Results Established movements lifes table of wild Polygonum aviculare population.
这表明,这是这些野生种群自我繁殖的结果。
This suggests the result of wild populations reproducing on their own.
较大的个体已经从野生种群中消失,并且整个物种的预期寿命都已经下降。
Bigger individuals have been removed from the wild population and the overall life expectancy of the species has fallen.
朱鹮保护工作已经取得了显著的成绩,野生种群达200多只。
Crested Ibis protection has gained great achievements that the number of the species has exceeded 200.
不幸的是,由于它们失去了栖息地,和人们对它们的过度捕捞,使这种野生种群的数量处于困境。
Unfortunately, habitat loss and over-harvesting are hurting the wild population numbers.
雌龟的平均体型变小了;较大的个体已经从野生种群中消失,并且整个物种的预期寿命都已经下降。
Female turtles have also become smaller on average; bigger individuals have been removed from the wild population and the overall life expectancy of the species has fallen.
淡水中心种群、前洲种群与野生种群间的遗传距离分别为0.0421和0.0809。
The genetic distances between wild population and two cultured populations were 0.0421 and 0.0809, respectively.
一个雌性大熊猫每两年约生产一至两只幼崽,因此,增大野生种群是一个艰难而缓慢的过程。
A female giant panda produces about one to two cubes biannually, so strengthening the wild population is a difficult and slow process.
一种新的乃至更加强大的工具或许是基因驱动技术。这种遗传机制可以在野生种群中迅速传播一种性状。
A new and even more powerful tool may be gene drives, which are genetic mechanisms that rapidly propagate a trait through a wild population.
近几十年来,由于栖息地受到严重破坏,以及滥捕猎杀等原因,黑麂野生种群的分布范围和数量逐渐缩小。
In the last several decades, due to destruction of habitat and hunting pressure, the distribution range and population size of this muntjac have been continued declining.
这些,连同其它人工养殖的动物(其它动物的养殖也必须为其野生种群的保护提供资金)每年为该州的财政收入贡献达2千万美元。
These, together with farmed animals (farms must also contribute financially to the wild population) generate $20m in revenue for the state every year.
但是当你所属的种群人数众多时,就不能整个种群一起追踪一群野生动物。
But when you have a large population, well, the whole population can't just get up and move to follow a wild herd of animals.
对此,斯科特表示,这种疾病“已经给野生的袋獾种群造成了非常严重的影响,但科学家们相信,在眼下这段时期内,袋獾还不会从塔斯马尼亚的栖息地灭绝。
The disease "is having a very serious impact on the wild population, but at this stage we don't believe that the species is headed for extinction," Scott said.
知识和可持续性:草药产品的材料采集自野生植物种群和种植的药用植物。
Knowledge and sustainability: Herbal materials for products are collected from wild plant populations and cultivated medicinal plants.
散落各处的野生大熊猫种群的质量由于近亲繁殖已经岌岌可危,研究人员希望被放归的熊猫可以和这些熊猫融合在一起。
The hope is that pandas can be released into small isolated wild populations that are in danger of being weakened by in-breeding.
药用植物通过收集野生生物种群和栽培植物来提供。
Medicinal plants are supplied through collection from wild populations and cultivation.
还曾有一种群居性的野生犬科动物——灰狼,已经发生了急剧的变化并形成另一种独特的动物。
What was once another one of the wild social canids, the grey wolf, has been altered radically, to the point that it has become its own unique animal.
一项来自加拿大的研究宣称鱼场对野生鲑鱼的一些种群来说是一种威胁。
A study from Canada says fish farms are a threat to some populations of wild salmon.
1971年世界野生动物联合会于西班牙建立一个瞪羚羊保护区,但之后将其种群分开希望能够提高其存活率。
The World Wildlife Federation set up a Mhorr gazelle reserve in Spain in 1971, but later split the herd in hopes of giving the species a better chance of survival.
据估计,世界现存野生西伯利亚虎大约 400-500只,且最新的研究显示这一种群数量较为稳定。
There are an estimated 400 to 500 Siberian tigers living in the wild, and recent studies suggest that these numbers are stable.
在南波弗特和楚科奇,鱼类和野生动物组织在未来五年的目标是防止阿拉斯加的北极熊两个种群进一步减少。
The conservation goal of the Fish and Wildlife Service over the next five years is to prevent further decline of Alaska's two polar bear populations, the southern in Beaufort and in the chukchi.
他们的研究显示,如果(海虱)爆发继续,当地的野生粉鲑种群将几近消失。
Their research suggests that if these outbreaks continue, local populations of wild pink salmon will all but disappear.
所以我们认为鸟舍的和野生的乌鸦发声相似,更多是与生俱来的,所以基本上内化在乌鸦种群中。
So we think that their vocalizations that are similar, aviary and wild, are more innate, so basically naturally inside of them.
野生动物学家在《种群生态学》杂志中报告,在20世纪的最后十年里毛皮猎人捕获的狼獾越来越少。
Wildlife biologists report in the journal Population Ecology that fur trappers have caught fewer and fewer wolverines over the last decades of the 20th century.
野生动物学家在《种群生态学》杂志中报告,在20世纪的最后十年里毛皮猎人捕获的狼獾越来越少。
Wildlife biologists report in the journal Population Ecology that fur trappers have caught fewer and fewer wolverines over the last decades of the 20th century.
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