WK4: Field sample training with animals

Methods: This experiment took place on September 29, 2015 from 3:00-5:00 pm. To execute this experiment, we began by selecting sampling area in both the woodlot and the grasslands on York's campus. Once selecting a sufficient spot, we took 3 bowls of each colour (yellow, white, and blue) and placed them in the woodlot. We then took the other three of each colour and placed them the same way in the grasslands. We decided to use the unmowed section of the grassland instead of the mowed section. Once all of the bowls were placed, we filled them about a quarter of the way to the top with soapy water. The soap in the water was used to reduce surface tension so that the species that landed on the water would not be able to float, but rather they would sink to the bottom and drown. Although snails and spiders are not insects, we decided to count them as a part of our protocol for this experiment. Placing the bowls on the ground in both the woodlot and the unmowed grassland was done in a strategic manner. We used yellow, white, and blue bowls to imitate the colours of flowers in order to aid in attracting pollinators. We decided to place the bowls in a 3x3 formation, with a meter's distance between each bowl. The pattern of the bowl placement was as follows: white, blue, yellow. This was done three times to get the desired 3x3 formation in both the woodlot and grasslands. The bowls were left on the ground for about 2 hours while other experiments were executed. At the end of this time, we went back to the bowls and took note of what insects they had collected.

实验方法：本实验于2015年9月29日下午3:00至5:00开展。为实施本次实验，我们首先在约克（York）大学校园的林地与草原区域选定采样点位。待选定足量采样点后，我们准备了黄、白、蓝三色碗具各3只，将其布置于林地中；随后又取同色系各3只，以相同方式布置于草原区域——本次实验选用未修剪的草原区域，而非修剪过的草坪。所有碗具布置完成后，我们向每只碗中注入约四分之一容量的肥皂水。水中添加肥皂的目的是降低表面张力，使落在水面的生物无法漂浮，而是沉入水底溺亡。尽管蜗牛与蜘蛛不属于昆虫，但我们仍决定将其纳入本次实验的统计范畴。碗具在林地与未修剪草原的布设均遵循规划方案：我们选用黄、白、蓝三色碗具模拟花卉色彩，以吸引传粉昆虫。碗具以3×3阵列排布，相邻碗具间距为1米，布设顺序依次为白色、蓝色、黄色。该阵列在林地与草原区域各重复布设3次，以达成所需的3×3布局。碗具留置地面约2小时，期间同步开展其他实验。待时长结束后，我们返回各采样点，记录各碗具所采集到的生物种类。