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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >On the pattern of discovery of introduced species.
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On the pattern of discovery of introduced species.

机译：关于引进物种的发现方式。

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摘要

Introductions of nonindigenous species can have significant effects. It is commonly claimed that the rate of species introductions to the United States has increased over time. This claim is based in part on the increasing rate of discoveries of introduced species. This discovery rate is influenced by factors other than the introduction rate. These include the sampling rate and population growth in the introduced species. In this article, we show that the discovery rate can increase even when there is no increase in either the introduction rate or the sampling rate. This suggests that the basis for some claims regarding an increasing rate of introductions may be invalid.
机译：引进非本地物种可能会产生重大影响。通常认为，随着时间的流逝，引入美国的物种的比率有所增加。该主张部分基于引入物种的发现率的增加。该发现率受导入率以外​​的因素影响。其中包括引进物种的采样率和种群增长。在本文中，我们表明即使引入率或采样率都没有增加，发现率也可以增加。这表明某些关于引入率增加的主张的依据可能是无效的。

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