Photograph measurements of broad whitefish (Coregonus nasus) body size

The dataset contains photograph measurements of broad whitefish (<em>Coregonus nasus</em>). Measurements (mm; with the scale set to the image) were taken using ImageJ. There are 15 measurements total; see the “Measurement Guide” file for details. Broad whitefish were harvested and photographed in the Gwich’in Settlement Area by community collaborators in 2017 &amp; 2018, along the Peel Channel in the Mackenzie Delta and the Peel River. Measurements were used to predict fish weight using random forest analysis as a methodology for community-based data collection. The “Data Type” column refers to the dataset fish were randomly assigned to as part of this process. “True Fish Weight (g)” and “True Fish Length (mm)” were collected in the field by community monitors. Data collection was done as part of a research program that began in 2017 between Gwich’in community members, renewable resources organizations within the Gwich'in Settlement Area, and university scientists.本数据集包含宽鼻白鲑（broad whitefish，*Coregonus nasus*）的照片测量数据。测量单位为毫米（mm），测量比例尺与图像绑定，采用ImageJ软件完成测量。本次数据集共计包含15项测量指标，详细说明请参阅《测量指南》（Measurement Guide）文件。2017年至2018年间，社区合作者于马更些三角洲皮尔水道及皮尔河沿岸的古威钦族定居区（Gwich’in Settlement Area）完成了宽鼻白鲑的捕捞与图像采集工作。所获测量数据被用于基于随机森林分析的鱼类体重预测，以此作为社区自主数据采集的方法。“数据类型”（Data Type）列代表本次研究流程中随机分配给对应鱼类的数据集分组。“真实鱼体重（g）”（True Fish Weight）与“真实鱼体长（mm）”（True Fish Length）数据由社区监测员在野外采集得到。本次数据采集是2017年启动的一项合作研究项目的组成部分，参与方包括古威钦族社区成员、古威钦族定居区内的可再生资源组织以及高校科研人员。