Lab 4: Field sample training with animals (pan trap)

The Pan Trap dataset was collected on the 1st of October 2014 at approximately 4:50pm, in both the grassland and woodlot area at the Keele campus of York University in Toronto, Ontario. It was a wet day as it had rained the night before and towards the end of the lab it was cloudy with showers. At the beginning of the lab, nine bowls of different colours filled with soapy water were placed at intervals in a random site at the grassland area. The soapy water was added to each bowl in order to kill whatever insects entered into it. The bowls were placed in a sequence of light blue, yellow and white so as to observe the insects that were attracted to each colour. Three blue coloured soapy bowls were also placed at a random site in the woodlot area. They were all the same colour as there were no more bowls of the other colours. Also the bowls were placed in a location where there would be minimal disturbance by other members of the lab so as not to scare away the insects. At the end of the lab, the number of insects and the number of different recognizable taxonomic units (RTUs) were determined in both the grassland and the woodlot. In the grassland area, a Large Carpenter Bee (Xylocopoa virginica)-order Hymenoptera, was attracted to one of the yellow bowls, then in one of the blue bowls there was a three-spotted jumping spider (Phidippus audax)-order Araneae. In another blue bowl in the grassland area there was Grasshopper- order Orthoptera and no insects were attracted to the white bowls. In the woodlot, only one insect was observed in all three blue bowls and they are called Aphids- order Hemiptera. A group of four students performed this experiment.Pan Trap数据集于2014年10月1日下午约4时50分，采集于加拿大安大略省多伦多市约克大学基尔校区的草地与林地区域。实验前夜曾降雨，当日整体潮湿，临近实验结束时天气转阴并伴有阵雨。 实验伊始，研究人员在草地区域的一处随机样点内间隔布设9个盛有肥皂水的不同颜色碗具，肥皂水用于灭杀进入碗内的昆虫。碗具按浅蓝、黄色、白色的顺序排布，以观测对各颜色存在趋性的昆虫。此外，在林地区域的一处随机样点内布设3个蓝色肥皂水碗——因无剩余其他颜色的碗具，故全部采用蓝色制式。所有碗具均设置在受实验室其他人员干扰最少的位置，以防惊扰昆虫。 实验结束后，研究人员统计了草地与林地区域内的昆虫个体总数及可识别分类单元（recognizable taxonomic units, RTUs）的数量。其中草地区域内：1只大型木蜂（Xylocopa virginica，膜翅目Hymenoptera）被黄色碗具吸引；1只三斑跳蛛（Phidippus audax，蜘蛛目Araneae）见于某蓝色碗具中；另有1只直翅目蝗虫见于草地区域的另一蓝色碗具，白色碗具未吸引到任何昆虫。林地区域的3个蓝色碗具中共仅发现1类昆虫，即蚜虫（半翅目Hemiptera）。本次实验由4名学生完成。