Urban insect communities are structured by hierarchical filters including regional processes, human facilitation, and species interactions. We sought to inform future urban conservation endeavors by identifying how landscape composition and configuration as well as the management of vacant lot greenspaces affect native lady beetle (Coccinellidae) community structure within the city of Cleveland, Ohio, USA. We found no effect of habitat treatment on native lady beetle abundance when comparing vacant lots seeded with native wildflowers and those with naturally occurring weedy vegetation mown monthly or annually. Nonetheless, establishing conservation plantings that vary in plant height, biomass, and bloom abundance could aid in supporting a greater richness of coccinellid species, as these variables had differential effects on the abundance of fungivorous and aphidophagous feeding guilds. Further, we found that vacant lots embedded within landscapes with increased impervious surface and a high degree of greenspace isolation contained fewer aphidophagous native and exotic lady beetles. Our findings suggest that landscape context is a critical consideration when aiming to utilize vacant land as conservation habitat for coccinellids. Given their large holdings of vacant land, shrinking cities offer a unique opportunity to incorporate landscape-scale planning into future sustainable development initiatives. For instance, with over 27,000 vacant lots, the city of Cleveland could aid lady beetle conservation by electing to maintain vacant lots that promote greenspace connectivity while targeting isolated lots within intact neighborhoods for new residential development.

城市昆虫群落由分层过滤器构成，包括区域过程，人类便利和物种相互作用。我们试图通过确定景观组成和配置以及空地绿地的管理如何影响美国俄亥俄州克利夫兰市的本地甲虫（Coccinellidae）群落结构来为未来的城市保护工作提供信息。当比较每个月或每年播种有本地野花的空地和具有天然杂草植被的空地时，我们发现生境处理对本地瓢虫的丰度没有影响。尽管如此，建立在植物高度，生物量和花开富度方面各不相同的保护性种植可以帮助支持更大的球藻物种的丰富性，因为这些变量对食虫和食蚜行会的数量有不同的影响。此外，我们发现，埋在景观中的空地具有增加的不透水表面和高度的绿地隔离度，其中包含较少的食蚜虫原生和外来瓢虫。我们的发现表明，在将空地用作球虫的保护栖息地时，景观环境是至关重要的考虑因素。由于拥有大量空置土地，不断萎缩的城市提供了将景观规划纳入未来可持续发展计划的独特机会。例如，有超过27,000个空地，