Tidal-diel patterns of movement, activity and habitat use by juvenile mangrove whiprays using towed-float GPS telemetry

Stingrays are a relatively diverse and widespread group of elasmobranchs. Despite their ecological and economical importance, many aspects of stingray ecology remain poorly understood. Few studies have examined juvenile stingrays fine-scale movements within nursery areas. This study aimed to examine diel movement patterns in juvenile mangrove whiprays (Urogymnus granulatus) using towed-float GPS telemetry within a reef flat habitat of the Great Barrier Reef.
The dataset consists of an Excel spreadsheet including GPS tracks of 10 young-of-the-year and juvenile (3 males and 7 females) mangrove whiprays. Tracking occured between 2016 and 2017. Two individuals were tracked twice, thus a total of 12 tracks were analyzed, five during the day and seven at night, ranging from 1.35 to 9 hours.
Tracking data were analysed using the adehabitatLT, adehabitatHR and glmmTMB packages in R.
Disc width and Tide height values are in cm; Tank time and duration of track in h; Total displacement in m; Activity space in km2 ; Rate of Movement in m min-1

魟类是一类多样性较高、分布范围广泛的板鳃亚纲鱼类。尽管其在生态与经济领域均具有重要价值，但当前学界对魟类生态学的诸多维度仍缺乏深入认知。鲜有研究针对育苗场区内幼龄魟的精细尺度移动模式开展相关探究。
本研究依托大堡礁（Great Barrier Reef）礁坪生境中的拖曳浮标式GPS遥测（towed-float GPS telemetry）技术，旨在探究幼体红树林鞭魟（Urogymnus granulatus）的昼夜移动模式。
本数据集包含一份Excel表格，记录了10尾当年幼体及幼龄红树林鞭魟的GPS轨迹数据，其中雄性个体3尾、雌性个体7尾。追踪工作于2016年至2017年间开展。其中有2尾个体被重复追踪1次，因此最终共计分析12组轨迹数据：日间5组、夜间7组，单组轨迹时长介于1.35至9小时之间。
本研究借助R语言中的adehabitatLT、adehabitatHR及glmmTMB软件包对追踪数据进行分析。
数据集中各参数单位如下：盘宽与潮高单位为厘米（cm）；暂养时长（Tank time）与轨迹时长单位为小时（h）；总位移量单位为米（m）；活动空间面积单位为平方千米（km²）；移动速率单位为米每分钟（m·min⁻¹）。