Abstract Carabidae (Coleoptera) are important natural enemies of many insect pests in various cropping systems. Their population dynamics and how they disperse determine how effective they are at carrying out the natural enemy function. There are robust patterns of community dynamics in annual cropping systems, but it is unclear if these would carry over into a relatively underexplored North American perennial crop. In Nova Scotia lowbush blueberry fields, we found that Carabidae diversity did not change with distance from field edge nor with time. Their activity density also did not change with time, but it did change with distance from field edge. We also found that the most abundant carabid of lowbush blueberry, Harpalus rufipes (De Geer) (Coleoptera: Carabidae), can disperse approximately 14.5 m/d. Our results shed more light on the community dynamics of Carabidae in lowbush blueberry fields and can help growers make informed decisions when it comes to incorporating natural enemies into their pest management practices.

中文翻译：

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低灌木蓝莓田中 Carabidae（鞘翅目）的短期扩散和长期时空格局

摘要 Carabidae（鞘翅目）是各种作物系统中许多害虫的重要天敌。它们的种群动态以及它们的分散方式决定了它们在执行天敌功能方面的有效性。一年生作物系统中存在强大的群落动态模式，但尚不清楚这些模式是否会延续到相对未充分开发的北美多年生作物中。在新斯科舍低丛蓝莓田，我们发现 Carabidae 的多样性不随距田边的距离和时间而变化。它们的活动密度也没有随时间变化，但随着距场边缘的距离而变化。我们还发现最丰富的低灌木蓝莓 Carabid，Harpalus rufipes (De Geer)（鞘翅目：Carabidae），可以分散大约 14.5 m/d。