这种辩护导致了一个过于草率的结论，即运动狩猎能产生更健康的动物种群。
This defense leads to the overly hasty conclusion that sport hunting produces a healthier population of animals.
此外，肮脏、拥挤的住所促进疾病在许多动物种群中扩散，这实际上是昆虫对居住地方的选择。
Furthermore, the squalid, cramped quarters that encourage diseases to propagate among many animal populations are actually the residental choice for insects.
例如，岛屿通常没有大型食肉动物的殖民地，或者太小而无法容纳可行的食肉动物种群。
For instance, islands often have not been colonized by large predators or are too small to hold feasible predator populations.
北半球某个动物种群的数量在不断减少；
The quantities of a certain animal species discount continuously in the northern hemisphere.
这使得一些动物种群变得比其他种群更容易灭绝。
这种与世隔绝的状态使得有袋动物种群安全地进化了几千年。
The very word connotes isolation — an isolation that has allowed pockets of animal species to evolve in safety over the course of thousands of years.
目的调查大理州洱源县小兽类哺乳动物种群结构。
Objective To study the population structure of small mammals in Eryuan Dali.
样线法是野生动物种群数量调查的常用方法之一。
The line transect methods are widely used in wildlife population census.
结论野外生境啮齿动物种群丰富，室内生境较单一。
Conclusion the species of rodents was abundant in the wild habitats while that in indoor habitats was simple.
对微卫星标记在动物种群遗传学中的应用进行了综述。
A review of application about microsatellites in population genetic study was given.
会计师们很快会做出消灭一切不同树种和动物种群的决定。
They would soon decide to do away with all those different species of trees and animals.
污染物对蛙类生殖腺发育的影响会导致两栖动物种群的衰退。
The influence of pollutants on the frog gonad growth might lead to decline of amphibian animal population.
各式各样的珊瑚生活在这里，活动在其间的不乏特有的动物种群。
A whole different set of corals live down here-and with them come a specialised fauna.
在第二幅图中，由于人口的激增导致很多野生动物种群已经灭绝了。
In the second graph, due to human population explosion resulted many wide animal species have already been destroyed.
该报告提供了1970年到2010年约一万多种动物种群的信息。
The report provides information about more than 10,000 animal populations from 1970 to 2010.
第一，竭泽而渔的捕杀方式是导致野生动物种群下降的直接原因。
Firstly, the merciless hunting methods is the reason which leads the decreed of wildlife species immediately.
Andes山脉和亚马逊丛林是世界上至少一半植物种群和动物种群的家园。
The Andes mountain range and the Amazon jungle are home to more than half of the world's species of flora and fauna.
比如，他们需要解释动物种群为什么会受到降雨量变化的影响，以及可以采取何种预防措施。
They need, for example, to explain "why an animal population is affected by changes in rainfall, and what might be done to protect it."
该地区的农民们注意到了沼泽地生产力的重大下降，以及随之而来的干旱使得大量动物种群迁出。
Farmers in the area have seen a significant decline in the marsh's productivity as successive droughts have driven away many animal populations.
通过对乌鲁木齐河底栖动物种群结构的分析，利用生物指数评价乌鲁木齐河水质状况。
The water quality of Urumqi river was evaluated using biological index. Which is on the basis of analysis of the population structure of benthic animal in Urumqi river.
通过对动物种群中疾病流行情况的观察，我们可以采取措施，保护人类和经济不受危害。
By watching for the arrival of diseases in the animal population it should be possible to take measures to protect both people and local economies.
这对关于表皮图案的另一理论解释是当头一击，此种解释认为斑点是同一动物种群的共有标记形式。
That knocks on the head an alternative explanation for coat patterns, namely that spots are some form of signal between animals of the same species.
接着，这些科学家搜罗了世界各地的科学文献，联系了世界各地的爬虫学家，来观察动物种群的结局如何。
The scientists then scoured the scientific literature and contacted herpetologists around the world to see how the animal populations had fared.
在这些研究过的动物种群中，至少有750种鱼、290种爬行类、150种两栖类面临风险。
Of those studied, at least 750 fish species, 290 reptiles, and 150 amphibians are at risk.
本文较为详细地介绍了我国啮齿动物种群生态学近20多年的理论探索、预测模型和应用研究的最新进展。
Presented was the introduction to the latest advances in theoretical approaches, predictive models and applied research in relation to rodents population ecology in China over past 20 years.
受气候变化影响最大的动物种群可能是狼獾——一种以其神奇的力量和韧性闻名的残暴的捕食者，现实中的金刚狼。
The charismatic megafauna suffering most from climate change may well be the wolverine—a vicious predator known for its uncanny strength and tenacity.
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.
有些地方动物种群是水平分布的，比如在索尔兹伯里平原，这块冰碛沉积三角洲密集分布着王企鹅、软毛海豹、象海豹和黑背海鸥。
Sometimes the animal multitudes are horizontal, as on Salisbury Plain, a glacial outwash delta densely colonized by king penguins, fur and elephant seals, and kelp gulls.
对小型哺乳动物种群数量周期性波动的外因调节假说进行介绍，概述了食物假说、捕食假说和复合因子假说的主要内容和研究进展。
This paper reviewed the new progress in the theory and hypothesis of population regulation in small mammals, focusing on the food hypothesis, predation hypothesis and multi-factorial hypothesis.
动物园着手在佛吉尼亚州的蓝岭山脉(Blue Ridge Mountains)、北卡罗来纳州海岸等地建立起幅员辽阔的“生存中心”，在此储备非洲动物种群。
Zoos began establishing "survival centers" on vast acreages in Virginia's Blue Ridge Mountains, coastal North Carolina, and elsewhere, and stocking them with African fauna.
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