AIM: Human development and agriculture can have transformative and homogenizing effects on natural systems, shifting the composition of ecological communities towards non‐native and native species that tolerate or thrive under human‐dominated conditions. These impacts cannot be fully captured by summarizing species presence, as they include dramatic changes to patterns of species abundance. However, how human land use patterns and species invasions intersect to shape patterns of abundance and dominance within ecological communities is poorly understood even in well‐known taxa. LOCATION: Conterminous United States. TIME PERIOD: 2010–2012. MAJOR TAXA STUDIED: Passeriformes. METHODS: We analyse continental‐scale monitoring data to study the proportional abundance of non‐native and native synanthropic species within passerine bird communities. Synanthropic species are those that benefit from an association with humans. We estimate how the amount and configuration of human development and agriculture relate to the degree to which human‐associated species dominate passerine communities across the continent. RESULTS: Human‐associated species comprised the majority of detected passerine individuals across two‐thirds of bird surveys. Non‐native and synanthropic species responded differently to land cover and reached highest relative abundance in different portions of the continent. The proportional abundance of synanthropic birds increased rapidly with development, but was not related to the configuration of land cover. The proportion of non‐native individuals was higher when intensively‐used land cover was more aggregated. MAIN CONCLUSIONS: Even low amounts of intensively‐used lands were associated with a dramatic reshaping of passerine communities, with consequences for patterns of relative abundance across the continent.

中文翻译：

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人类相关物种在美国各地的雀类群落中占主导地位

目标：人类发展和农业可以对自然系统产生变革性和同质化的影响，将生态群落的组成转向能够在人类主导的条件下耐受或繁衍的非本地和本地物种。这些影响不能通过总结物种存在来完全捕捉，因为它们包括物种丰度模式的巨大变化。然而，即使在众所周知的分类群中，人类土地利用模式和物种入侵如何相互作用以塑造生态群落内的丰度和优势模式也知之甚少。地点：美国本土。时间段：2010-2012。研究的主要分类群：Passeriformes。方法：我们分析大陆尺度的监测数据，以研究雀类鸟类群落中非本地和本地同种人物种的比例丰度。Synanthropic 物种是那些受益于与人类关联的物种。我们估计了人类发展和农业的数量和结构与人类相关物种在整个大陆的雀类群落中占主导地位的程度之间的关系。结果：在三分之二的鸟类调查中，人类相关物种占检测到的大多数雀形目个体。非本地物种和同种人类物种对土地覆盖的反应不同，并在大陆的不同部分达到最高的相对丰度。同人类鸟类的比例丰度随着发育迅速增加，但与土地覆盖的配置无关。集约利用的土地覆盖越集中，非本地个体的比例越高。主要结论：