Data from: <b>Variation in boldness across the range of a widespread reptile, </b><b><i>Terrapene carolina carolina</i></b>
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Complete data from "Variation in boldness across the range of a widespread reptile, <i>Terrapene carolina carolina</i>" by Carlson, Carter, Hulbert, Hyslop, Kashon, Kimble, Lisk, McElroy, Mook, Refsnider, Roe, Tetzlaff, and Windmiller. Variables include:ID - turtle ID codeDate - date behavior was measuredTime - minutes past midnight for time behavior was measuredLatitude (mean-centered and scaled to one standard deviation; because this species is at risk, raw coordinates are not provided)Longitude (mean-centered and scaled to one standard deviation)HeadLat - head emergence latency in secondsTemp - plastron temperature in degrees CPlastLen - plastron length in mmMass - total turtle mass in gramsSex - turtle sex (M=male, F=female, others are Unknown)History - handling history of individual turtle (Tracked = currently being radiotracked via radiotelemetry, ReCap = previously has been captured/marked, FirstCap = first time captured by researchers)Observer - initials of observing researcherSite - site ID code (first two letters are US state abbreviation)Remaining columns are proportions of various NLCD land cover classes from within 155 m radius of turtle. Land cover class names for the columns are directly derived from NLCD names.
本数据集涵盖Carlson、Carter、Hulbert、Hyslop、Kashon、Kimble、Lisk、McElroy、Mook、Refsnider、Roe、Tetzlaff与Windmiller发表于论文《广布爬行动物卡罗莱纳箱龟（*Terrapene carolina carolina*）分布范围内的胆量变异》的完整实测数据。 数据集包含的变量如下： ID：龟类个体编号 Date：行为测量日期 Time：行为测量时刻距午夜的分钟数 Latitude：纬度（经均值中心化并按1倍标准差标准化；鉴于该物种面临生存风险，未提供原始坐标） Longitude：经度（经均值中心化并按1倍标准差标准化） HeadLat：头部伸出潜伏期（单位：秒） Temp：腹甲温度（单位：摄氏度） PlastLen：腹甲长度（单位：毫米） Mass：龟体总质量（单位：克） Sex：龟类性别（M=雄性，F=雌性，其余为未知） History：个体龟的捕获处理历史（Tracked=当前通过无线电遥测技术进行追踪，ReCap=此前已被捕获并标记，FirstCap=研究者首次捕获该个体） Observer：观测研究者的姓名首字母 Site：样地编号（前两位字母为美国州名缩写） 剩余列均为龟类个体周边155米半径范围内各类美国国家土地覆盖数据库（National Land Cover Database，NLCD）土地覆盖类型的占比，各列名称直接源自NLCD的官方分类名称。
