Temperature–habitat interactions constrain seasonal activity in a continental array of pitfall traps
Temperature–habitat interactions constrain seasonal activity in a continental array of pitfall traps
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温度与生境的相互作用限制了一系列大陆陷阱的季节性活动
DOI：
10.1002/ecy.3855
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发表时间：
2022
期刊：
影响因子：
4.8
通讯作者：
de Beurs, Kirsten
中科院分区：
文献类型：
--
作者：
Kaspari, Michael;Weiser, Michael D.;Marshall, Katie E.;Siler, Cameron D.;de Beurs, Kirsten
活动密度（AD），即动物集体在其环境中移动的速率，是分类单元的局部丰度及其速度的产物。我们使用国家生态观测站网络（氖）的47个地点分析了季节性AD的驱动因素，以更好地了解生态系统速率的变化，如授粉和种子传播，以及使用AD监测无脊椎动物种群的限制。AD测量为每两周一次陷阱阵列的体积（ml陷阱-114天-1）。2017年至2018年的汇总样本显示，在大多数温度下AD极值，但总体斜率为正。然而，栖息地类型的AD的季节性温度敏感性变化很大，从负的湿地到正的混交林，草地和灌木栖息地。最大AD的温度在47个地点之间变化了三倍;它跟踪了最高生长季节温度的三倍地理变化，并具有一致的差距约。3°C的栖息地，一个新的宏观生态结果。AD具有作为调查活动驱动的生态系统速率的有效代理的潜力。然而，我们的研究结果表明，它用于监测昆虫丰度是复杂的，由许多方式，丰富和速度都受到当地的温度和植物外貌。
Activity density (AD), the rate at which animals collectively move through their environment, emerges as the product of a taxon's local abundance and its velocity. We analyze drivers of seasonal AD using 47 localities from the National Ecological Observatory Network (NEON) both to better understand variation in ecosystem rates like pollination and seed dispersal as well as the constraints of using AD to monitor invertebrate populations. AD was measured as volume from biweekly pitfall trap arrays (ml trap−114 days−1). Pooled samples from 2017 to 2018 revealed AD extrema at most temperatures but with a strongly positive overall slope. However, habitat types varied widely in AD's seasonal temperature sensitivity, from negative in wetlands to positive in mixed forest, grassland, and shrub habitats. The temperature of maximum AD varied threefold across the 47 localities; it tracked the threefold geographic variation in maximum growing season temperature with a consistent gap ofca. 3°C across habitats, a novel macroecological result. AD holds potential as an effective proxy for investigating ecosystem rates driven by activity. However, our results suggest that its use for monitoring insect abundance is complicated by the many ways that both abundance and velocity are constrained by a locality's temperature and plant physiognomy.