WK3 LAB 2 BIO 2050 Dataset 3

The dataset 3 was collected on September 22, 2015 at 3:56 pm by a group of 5 Ecology (Bio 2050) students. Data was collected near the Osgoode Library woodlot via transect measuring tapes. The group of students searched for any adult tree at the woodlot or in other words, any tree whose diameter was wider than the diameter of an average adult fist. Once the tree #1 was selected, the group proceeded to measure the tree's diameter. The measuring tape was held at chest height and horizontally extended to measure the diameter of the tree in meters. Afterward, the students assessed the living condition of the tree on a scale from 0 to 2 by observing the general appearance, number, pattern and coloration of leaves along the trunk and canopy as well as any presence of single or multiple dead branches. 0 on the given scale meant that a tree was dead; 1 meant that a tree was living or in acceptable living condition, while 2 indicated a huge green canopy. Then, students proceeded to measure the distance in meters from the tree of interest to the next adult tree by extending the measuring tape from the mid point of tree's trunk to the trunk's mid point of the next closest adult tree. It is important to note that all trees involved in the following collection of data were selected from the edge of woodlot to the center of woodlot moving in a North-South direction. After the first set of measurements, the group proceeded to collect the same type of data from 10 pairs of adult trees in total. The data was recorded, evenly shared amongst the group members and submitted to Figshare.com for assessment.

数据集3于2015年9月22日下午3时56分，由5名生态学（Bio 2050）专业学生采集。数据采集工作于奥斯古德图书馆林地（Osgoode Library woodlot）附近开展，使用样带卷尺作为测量工具。学生小组首先搜寻该林地内的所有成年树木——即胸径大于普通成人拳头直径的树木。选定首棵待测树木后，小组随即测量其胸径：将卷尺置于胸部高度并水平展开，以米为单位测量树木直径。随后，学生们通过观察树干与树冠的整体外观、叶片数量、分布模式与色泽，以及是否存在单根或多根枯枝，按照0至2的评分标准评估树木存活状况：评分0代表树木已死亡；评分1代表树木存活或处于可接受的健康状态；评分2则代表树冠茂密翠绿。接下来，学生们测量目标树木与下一棵成年树木的间距：将卷尺从目标树干的中点延伸至最近的另一棵成年树木的树干中点，以米为单位记录距离。需要特别说明的是，本次采集涉及的所有树木均沿南北方向，从林地边缘向中心依次选取。完成首轮测量后，小组共采集了10组成对成年树木的同类数据。所有数据均已完成记录，由小组成员平均分配整理后，提交至Figshare.com平台进行评审。