Data from: Accelerometers can measure total and activity-specific energy expenditure in free-ranging marine mammals only if linked to time-activity budgets

Northern fur seals dataData was collected on northern fur seal females during the breeding season on St Paul island, Bering Sea, Alaska from a daily Diary tag from Wildlife Computers. Column headings include "Date", "Time","Depth", "External Temperature", "int mX", "int mY", "int mZ", "int aX", "int aY", "int aZ", "Light Level", "Velocity", "Wet/Dry", "Wet/Dry", "Hour", "Battery Voltage", "Protocol". int mX, Y, Z refer to magnetic field recorded on the 3 body axes, and int aX, Y, Z to the acceleration recorded on the same axes.Northern_fur_seals_data.zipAntarctic fur seal dataData was collected on Antarctic fur seal females during the breeding season on Kerguelen Island, Southern Ocean on The Pointe Suzanne colony from a Daily Diary tag from Wildlife Computers. Column headings include "Date", "Time", "Depth", "Temperature", "aX", "aY", "aZ", "Light", "Velocity", "WetDry", "WetDrytxt". aX, Y, Z refer to the acceleration recorded on the 3 body axes.Antarctic_fur_seal_data.zip

北方海狗（Northern fur seals）数据集：该数据集采集自阿拉斯加白令海圣保罗岛繁殖季的雌性北方海狗，所用设备为Wildlife Computers公司的每日日志标签（Daily Diary tag）。数据集列标题包含："Date"（日期）、"Time"（时间）、"Depth"（深度）、"External Temperature"（外部温度）、"int mX"、"int mY"、"int mZ"、"int aX"、"int aY"、"int aZ"、"Light Level"（光照等级）、"Velocity"（速度）、"Wet/Dry"（干湿状态）、"Wet/Dry"（干湿状态）、"Hour"（小时）、"Battery Voltage"（电池电压）、"Protocol"（通信协议）。其中int mX、int mY、int mZ代表三个身体轴向上记录的磁场强度，int aX、int aY、int aZ则代表同一轴向上记录的加速度。数据集压缩包名为Northern_fur_seals_data.zip。

南极海狗（Antarctic fur seal）数据集：该数据集采集自南大洋凯尔盖朗岛苏珊角种群繁殖季的雌性南极海狗，所用设备为Wildlife Computers公司的每日日志标签（Daily Diary tag）。数据集列标题包含："Date"（日期）、"Time"（时间）、"Depth"（深度）、"Temperature"（温度）、"aX"、"aY"、"aZ"、"Light"（光照强度）、"Velocity"（速度）、"WetDry"（干湿状态）、"WetDrytxt"（干湿状态文本）。其中aX、aY、aZ代表三个身体轴向上记录的加速度。数据集压缩包名为Antarctic_fur_seal_data.zip。

搜集汇总

背景与挑战

背景概述

该数据集包含北太平洋海狗和南极海狗在繁殖季节的野外监测数据，通过GPS、时间深度记录器和三轴加速度计收集，用于研究加速度计（如VeDBA）在预测海洋哺乳动物能量消耗中的应用。研究发现，仅使用VeDBA预测总能量消耗准确性较低（R2=0.36），但结合时间活动预算（如潜水、迁徙、休息等活动）后，预测准确性显著提高（R2=0.70），表明加速度数据需与具体活动类型关联才能有效估算能量消耗。数据文件包括日期、时间、深度、加速度等列，总大小约3.92 GB，适用于生态学和动物行为学研究。