Lab 03: Bird Species (Data set 4)

BIOL2050 Lab 03. This experiment was conducted in the Danby Woodlot and Danby Grasslands at York University on 30th September 2015 between 3:00-5:30 pm with team members: Huda, Olivia, Ratiba, Reem and Farkhunda. The Danby Woodlot and Grasslands are both located between human interrupted areas (roads, building and industry). The temperature was 19 degrees Celsius, sunny skies with a light breeze. In the Grassland the ground was slightly moist. In the Woodland, the ground was slightly moist as well accompanied by sunlight and a slight breeze. 5 random areas were chosen in both the Woodlot and the Grasslands. Transects measuring 3 meters using a measuring tape were placed in random areas. Bird species were observed for the next 5 minutes, either 5 meters to the left or right of the 3 meter line transect and these observations were recorded. The bird species were identified with regard to physical appearance. During the 5 minutes, the wind speeds were recorded using the Beaufort scale. The values for wind speed were first recorded under Beaufort number and then converted to MPH. The purpose of this experiment was to estimate the bird population and identify the different bird species in the Danby Woodlot and the Danby Grasslands. Transect line method was used because transect line covers a large area,it is a quick method to estimate population of a species in an area, and it is a good method to use for mobile species.

BIOL2050课程实验三。本次实验于2015年9月30日下午3:00至5:30在约克大学丹比林地（Danby Woodlot）与丹比草原（Danby Grasslands）开展，参与团队成员包括Huda、Olivia、Ratiba、Reem及Farkhunda。丹比林地与草原均地处受人类活动干扰的区域（道路、建筑与工业区）之间。当日气温为19摄氏度，天气晴朗，伴有微风。草原区域地面略感湿润；林地区域地面同样略湿润，且伴有日照与微风。研究人员在林地与草原各随机选取5处区域，使用卷尺布设长度为3米的样带。随后在每条3米样带的左右两侧各5米范围内，开展为期5分钟的鸟类物种观察并记录相关数据。鸟类物种通过外形特征进行识别。观测的5分钟期间，使用蒲福风级（Beaufort scale）记录风速，先记录蒲福风级编号，再将其转换为英里每小时（MPH）单位。本次实验的目的为估算丹比林地与丹比草原的鸟类种群数量，并识别区域内的不同鸟类物种。本实验选用样带法（Transect line method），原因在于该方法可覆盖较大范围区域，是快速估算某区域内物种种群数量的高效手段，同时也适用于移动性较强的物种。