Climate is usually regarded as the main determinant of plant species distributions. However, past human use of species for food might also have influenced distributions. We hypothesized that human-mediated dispersal has resulted in food plants occupying more of their potential geographical range. We also hypothesized that key ecological traits could predispose a species to occupy more of its potential climatic geographical range and be selected by humans for food.

中文翻译：

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人类食物的使用增加了索诺兰沙漠的植物地理范围

气候通常被认为是植物物种分布的主要决定因素。然而，过去人类将物种用作食物也可能影响了分布。我们假设人类介导的传播导致食用植物占据了更多的潜在地理范围。我们还假设，关键的生态特征可能会使一个物种倾向于占据更多潜在的气候地理范围并被人类选择作为食物。