Lab 2 Dataset 2 (grasslands): Population density of milkweed over 25 meter transects

Data was collected to determine the population density of milkweed over a certain amount of area. Two 25 metre transects were placed randomly in the grasslands. The first 20 easily identifiable milkweed plants were studied that layed along the transect. The distance from the beginning of the transect to the middle of the plant was recorded in feet later converted to inches. Using a second transect, the height of the plant was recorded in inches. Researchers then observed and counted how many leaves were attached to the plant as well as the number of alive flowers. The level of crowding around the plant was determined by the researchers based on a 0-3 scale where 0 was determined as no surrounding plants, 1 was determined as minimal crowding having some plants surrounding it, 2 was determined as medium crowding having multiple plants around the plant and 3 was determined as heavily crowded with many plants surrounding the individual species. Data was collected at Danby grasslands at York University on September 23rd, 2015 around 3:30pm. The weather was around 25°C with clear skies on a sunny day. Very minimal shade cover. The transects were placed randomly where milkweed was visible. The members of group 4 are Kristine Del Rosario, Kate Britanico, Nassar Khan, Michael Angelini.本数据集旨在测定特定区域内马利筋（milkweed）的种群密度。研究人员在草原区域随机布设了两条长度为25米的样带（transect）。沿样带选取前20株易于识别的马利筋植株开展研究，记录样带起点至植株中部的距离（单位：英尺，后续转换为英寸）。借助第二条样带，研究人员记录了植株的高度（单位：英寸）。研究人员同时观察并计数植株的附着叶片总数与存活花朵数量。植株周边的拥挤程度采用0至3的等级评定：0级代表无周边植株，1级代表轻度拥挤（周围存在少量植株），2级代表中度拥挤（周围存在多株植株），3级代表重度拥挤（该物种个体周围存在大量植株）。数据采集于2015年9月23日下午约3:30，地点为约克大学（York University）丹比草原（Danby grasslands）。当日天气晴朗，气温约25°C，几乎无遮阴区域。样带随机布设于可见马利筋的区域。第4研究小组的成员包括Kristine Del Rosario、Kate Britanico、Nassar Khan与Michael Angelini。