Manning Isabella, Zoller Leana, Resasco Julian
Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO, 80309, USA.
Oecologia. 2025 Jul 11;207(8):131. doi: 10.1007/s00442-025-05771-8.
Plant-pollinator interaction networks are dynamic in time and space. Interaction turnover consists of interaction rewiring (i.e., changes in interactions independent of species turnover) and species turnover (i.e., the gain or loss of species present in the network). To capture network dynamics, it is crucial to address the effect of sampling effort because insufficient data can distort apparent network patterns. We used eight years of plant-pollinator interaction data from a subalpine meadow to examine patterns of temporal (week-to-week) interaction turnover and the role of sampling effort. With increasing sampling effort, values of interaction turnover and species turnover decreased, and rewiring increased. Saturation curves suggest an approach towards true values with higher sampling effort. Across the eight years, substantial variation in weekly and seasonal interaction turnover was observed, with identifiable seasonal trends across all aggregated years. These results demonstrated that the interpretation of interaction turnover and its components is sensitive to sampling effort, stressing the importance of considering its role in network studies.
植物-传粉者相互作用网络在时间和空间上是动态的。相互作用更替包括相互作用重连（即与物种更替无关的相互作用变化）和物种更替（即网络中物种的增减）。为了捕捉网络动态，考虑采样努力的影响至关重要，因为数据不足会扭曲明显的网络模式。我们使用了来自一个亚高山草甸的八年植物-传粉者相互作用数据，来研究时间上（周与周之间）相互作用更替的模式以及采样努力的作用。随着采样努力的增加，相互作用更替和物种更替的值下降，而重连增加。饱和曲线表明，随着采样努力的提高，接近真实值。在这八年中，观察到每周和季节性相互作用更替有很大差异，在所有汇总年份中都有可识别的季节性趋势。这些结果表明，对相互作用更替及其组成部分的解释对采样努力很敏感，强调了在网络研究中考虑其作用的重要性。
