灭绝率

大网蛱蝶的灭绝率和再殖率都随时间交替增减，不过趋势正好相反，并且灭绝率远大于再殖率。

Extinction rate and re-colonization rate also fluctuated over time , while extinction rate was far higher than re-colonization rate .

环境部长马特·基恩表示，这项计划是为了帮助对抗他所说的全球最严重的哺乳动物灭绝率。

Environment Minister Matt Kean said the plan is to help fight against , what he called , the worst extinction rate of mammals in the world .

人们由寻找特定物种的存在渐渐趋于注重物种灭绝率。

Looking for the presence of particular species also tends to focus on extinction rates .

在考虑近交衰退的影响后，遗传多样性水平降低，灭绝率提高；

When considering inbreeding depression , the population genetic diversity will be reduced and the extinction probability will be increased .

这项指数抛弃了惯常使用的物种列表及估算物种灭绝率的方法。

The index discards the traditional approach of compiling lists of species and estimating the rate at which they are going extinct .

据估计，现代环境下的生物灭绝率，是其自然条件下灭绝率的1000倍之高，而这一切的始作俑者，正是人类的影响和干涉。

Extinction rates have been estimated to be about 1000 times higher than they should be , and that 's all due to human influence - and interference .

在1998-2001年，金堇蛱蝶的灭绝率持续下降，而再殖率有上升的趋势，但在2001-2002年，其灭绝率有所回升，而没有再殖发生。

Extinction rate had a trend of decreasing , while re-colonization rate increasing between 1998-2001 . But from 2001 to 2002 , extinction rate increased , and re-colonization did not occur . M.

因此，仅仅计算物种数量和估算他们的灭绝率是不能详细指出人类行为所导致的对自然界完整性的影响。

Because of this , simply counting species numbers and assessing their risk of extinction does not give a detailed indication of how intact the natural world is as a result of human activities .

应用传统的率函数模型于一个包含了目标区效应的集合种群，导致斑块大小相关的灭绝率参数估测的正偏差。

Failure to include a target area effect in the model yielded a positive bias for the parameter that scaled extinction probability to patch size . Then at the 6 point will lead to a higher pregnancy rate .

在决定种群是否灭绝上，不育率、灭杀率、选择性收获率等的作用是相同的。

On determining whether rodent pest population becomes extinct , the contraception rate , kill rate , harvest rate etc have same effect .

在界线附近，底栖大有孔虫出现大量灭绝，平均总灭绝率达73%。

At the P / E boundary , the larger benthic foraminifera were extensive extinction with an average general extinction rate of 73 % .

然而因栖息地的丢失和污染，资源破坏严重，有的种群处于濒危或灭绝状态。在考虑近交衰退的影响后，遗传多样性水平降低，灭绝率提高；

Unfortunately , most of the population are declining with several species even to threatened or endangered due to habitat loss and environment pollution . When considering inbreeding depression , the population genetic diversity will be reduced and the extinction probability will be increased .