Specified RTUs of captured insects in grasslands region.

For this experiment, the sweep-net procedure was used. The experiment aimed to capture insects with vigorous net-sweeping action along specified transects. The distance walked along the transect each time was 25 meters for a total of 10 times. The targeted insects were located in the grasslands at York University. Once a single transect was complete, the net was held open and the captured insects were observed and identified according to their RTUs (recognizable taxonomic units). For each capture, the number of insects in each RTU were visually counted and recorded. This method was repeated 10 times in the grasslands and resulted in a total sample size of 54 captured insects.本实验采用扫网采样法。实验旨在沿预设样带实施强力扫网动作以采集昆虫，每次沿样带行进的距离为25米，总计开展10次采样。目标昆虫栖息于约克大学（York University）的草地生境内。单条样带采样完成后，保持扫网张开状态，依据可识别分类单元（RTUs，recognizable taxonomic units）对捕获的昆虫进行观察与鉴定。针对每一次采样，对每个可识别分类单元下的昆虫数量进行目视计数并予以记录。该采样方法在该草地生境中重复开展10次，最终累计获得54头捕获昆虫作为总样本量。