如果这些其他物种的种群数量增加,蜱类捕获细菌的数量就会减少,因此感染莱姆病的人数就会减少。
If the population of these other species were increased, the number of ticks acquiring the bacterium and hence the number of people contracting Lyme disease would likely decline.
例如,在白马雪山保护区,尽管云南金丝猴种群数量并没有明显变化,但黑熊和豪猪的种群数量均有所增加。
In Baimaxueshan for example, while the population of the Yunnan Golden Hair Monkey does not show a clear change, the populations of black bears and porcupines have increased.
渔业专家托尼·克恩表示,数量持续下降意味着龙虾种群数量是个长期性的问题,而不是周期性的下降和回弹。
Toni Kern, a fisheries expert, said the consistent decline means the population has long-term problems, not cyclical declines and recoveries.
值得注意的是,松鸡数量必需管理:如果荒野中松鸡过度繁殖,这种鸟类就会得病,导致种群数量暴跌。
Significantly, grouse need to be managed: if moors become over-populated the birds may become diseased and populations can crash.
只考虑这些不确定的繁殖能力,灭绝不太可能如果个体的数字在一个种群数量超过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.
对油污土壤进行微生物处理时,油污土壤中微生物种群和数量、营养物种类和数量对处理效果均有影响。
Microbe species and amount, and nutrient sorts and concentration all have effects on treatment efficiency in the microbe treatment of oily soil.
例如,可能另一类物种的数量在不断上升,它们以蝾螈及它们的卵作为捕食对象,从而导致其种群数量下降。
For example, it is possible that another species that preys on the salamanders or its eggs has increased, therefore leading to the decline in its population.
现在我们准确的知道了企鹅分布在哪 里,下一步的工作就是能够计算每个栖息地中企鹅的数量,以使我们能更好的描 述出种群数量的变化情况。
Now we know exactly where the penguins are, the next step will be to count each colony so we can get a much better picture of population size.
其中,东方白鹳、白琵鹭和白头鹤的种群数量超过全球地理种群数量的1%。
Additionally, the population of oriental stork, white spoonbill and hooded crane were over 1% of the global geographical population.
雨林和次生林下砂仁笋和苗的总数分别为衰老株数量的3 95和1 6 6倍,远多于衰老株数量,表明砂仁能够维持种群稳定。
The sum of shoot and seedlings was 3.95 and 1.66 times of senescent plant under rainforest and secondary forest, respectively, which meant that A. villosum could maintain population stability.
应用优化算法高度并行、种群个体收敛高度一致的特性,较好的解决了高维统计计算中样本数量与计算时间、样本数量与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.
偷猎和森林火灾是导致种群数量减少的两个重要原因,据杨叶青说,贵州梵净山国家级自然保护区,是猴子数量最多的一个区域。
Poaching and forest fires are two of the main causes for the decrease in population, according to Yang Yeqin, director of Guizhou's Fanjingshan National Nature Reserve, where most of the monkeys live.
偷猎和森林火灾是导致种群数量减少的两个重要原因,据杨叶青说,贵州梵净山国家级自然保护区,是猴子数量最多的一个区域。
Poaching and forest fires are two of the main causes for the decrease in population, according to Yang Yeqin, director of Guizhou's Fanjingshan National Nature Reserve, where most of the monkeys live.
应用推荐