SGER: Rapid evolution of invasive species to elevated atmospheric CO2

在几个自由空气二氧化碳浓缩设施场址，能源部提供了基础设施，以控制科学实验的大气条件。 这些实验提供了一个独特的机会来研究快速进化对CO2浓度升高的反应。入侵物种快速进化的能力仍然是未知的。计划关闭几个FACE站点将减少研究杂草快速进化的机会，除非在明年内收集种子。今年夏天和明年春天将收集FACE站点（从沙漠到落叶林）的杂草种子。 这些标本将用于研究全球变化下杂草的生态和生理性状的快速进化潜力。下一个世纪美国生物多样性和生产力面临的两大威胁是入侵物种和全球气候变化。 为了理解这两种威胁的相互影响，有必要了解全球气候变化如何影响入侵物种的进化、适应和传播能力。 不幸的是，杂草对全球变化的快速进化反应在很大程度上被忽视了。这项研究提供了一个机会，以研究杂草是否在全球变化的情况下进化，并将为快速气候变化下入侵物种的可持续管理提供信息。

At several Free-air CO2 Enrichment (FACE) Facility sites, the Department of Energy has provided infrastructure to control atmospheric conditions for scientific experiments. These experiments present a unique opportunity to study rapid evolution in response to elevated CO2. The capacity of invasive species to rapidly evolve is still unknown. Planned closure of several FACE sites will reduce this opportunity to study rapid evolution in weeds unless seeds are collected within the next year. Seeds of weed species from FACE sites (ranging from desert to deciduous forest) will be collected this summer and next spring. These collections will be used to examine the potential for rapid evolution of ecological and physiological traits by weeds under global change.Two major threats to biological diversity and productivity within the U.S. in the next century are invasive species and global climate change. To understand interactive impacts of these two threats, it is necessary to understand how global climate change influences the capacity of invasive species to evolve, adapt, and spread. Unfortunately, rapid evolutionary responses of weeds to global change have largely been ignored. This research provides the opportunity to examine whether weeds evolve in the face of global change and will inform the sustainable management of invasive species under rapid climate change.