Early breeding season responses of red-legged kittiwakes to changes of prey availability and linkages to the non-breeding stage

This dataset describes the foraging ecology, life history responses to poor foraging conditions, and overwintering ecology of red-legged kittiwakes breeding in the southeast Bering Sea on St. George Island, AK between 2015 and 2017. Data loggers were deployed during the summers 2015-17 to collect summer (GPS) and winter (GLS) tracking data to characterize foraging and migratory ranges. Samples were collected (blood and feathers) and processed to measure corticosterone (both blood and feathers), total mercury (both blood and feathers), change telomere length, sex, and stable isotopes of carbon and nitrogen (feathers). Telomere length was also measured for other samples collected during fieldwork conducted on St.George in 2010-2014. Birds included in this study were banded and followed for reproductive success, and survival during summers 2015-17. Morphometric measurements were taken and egg volume was also measured. This dataset includes the following 7 csv data files, as well as a 1 compressed collection of raw GLS tracking data files. SG_RLKI_gls_winter_tracks_2016_2017.csv includes the processed GLS tracking data from winters 2016 and 2017. There are a total of 103 birds included in this dataset however, several did not make complete trips before the tag died. SG_RLKI_gls_tracking_2016_2017_raw.zip is a compressed collection of raw GLS tracking data files that were used to create SG_RLKI_gls_winter_tracks_2016_2017.csv. These files were downloaded and decompress with the software that came with the tags and because GLS data processing is always improving, have been provided here to allow future researchers to process these tracks with different methods. SG_RLKI_gps_summer_tracks_2015_2017.csv includes GPS tracking data from the summer during the pre-lay and incubation periods from 2015, 2016 and 2017. There are tracks from 1103 trips from 99 birds. Trips have been labeled but many are not foraging trips (short trips to the lakes on St.George or to sleep on the water during prelay). SG_RLKI_reproductive_productivity_2015_2017.csv includes reproductive nest monitoring from St.George during summer for 395, 437, and10 nest in 2015, 2016 and 2017 respectively. SG_RLKI_resights_2011_2017.csv include band resight data from St.George during the summers 2015-2017. There is also some opportunistic data that was collected in 2010 and 2011 harvested from capture records of a few banded birds. SGRK_ResightEffort.csv this is the effort metadata about the band resights in SG_RLKI_resights_2011_2017.csv SG_RLKI_telomere_2010_2017.csv includes telomere results for red-legged kittiwakes from St.George Island between 2010 and 2017 analyzed as part of our study. SG_RLKI_Capture_Phys_2015_2017.csv includes all the data about when and where birds were captured, morphometric measurements, egg, volume, what instrumentation the bird received, and the values for samples processed for mercury, stable isotopes of carbon and nitrogen, sex, and corticosterone. This is the data table that connects all the other datasets to metadata about the birds listed in the other datasets.本数据集记录了2015至2017年间，在阿拉斯加州圣乔治岛白令海东南部繁殖的红脚三趾鸥（red-legged kittiwakes）的觅食生态学、低觅食条件下的生活史响应，以及越冬生态学特征。 研究团队于2015至2017年夏季部署数据记录仪，采集夏季GPS（Global Positioning System，全球定位系统）追踪数据与冬季GLS（Geolocation Light Sensor，地理光照定位传感器）追踪数据，以明确其觅食与迁徙范围。研究人员采集血液与羽毛样本，用以检测皮质酮（血液与羽毛样本均检测）、总汞含量（血液与羽毛样本均检测）、端粒长度变化、性别，以及羽毛中的碳、氮稳定同位素比值。此外，研究团队还对2010至2014年在圣乔治岛野外工作中采集的其他样本进行了端粒长度检测。 本研究涉及的红脚三趾鸥均已佩戴鸟类环志脚环，并对其繁殖成功率以及2015-2017年夏季的存活率进行了跟踪记录。研究人员还测量了受试鸟类的形态学指标与卵的体积。 本数据集包含7个CSV（Comma-Separated Values，逗号分隔值）格式数据文件，以及1份压缩的原始GLS追踪数据文件集。其中，SG_RLKI_gls_winter_tracks_2016_2017.csv 包含2016与2017年冬季经处理后的GLS追踪数据。本数据集共涵盖103只个体，但部分个体在记录仪失效前未完成完整觅食行程。 SG_RLKI_gls_tracking_2016_2017_raw.zip 为用于生成上述SG_RLKI_gls_winter_tracks_2016_2017.csv 的原始GLS追踪数据压缩包。由于GLS数据处理方法仍在不断优化，本数据集一并提供该原始数据，以便后续研究者采用不同方法对追踪轨迹进行分析处理。 SG_RLKI_gps_summer_tracks_2015_2017.csv 包含2015、2016及2017年夏季繁殖前期与孵化期的GPS追踪数据，涵盖99只个体的1103次飞行行程。部分行程标签已标注，但其中多数并非觅食行程（例如前往圣乔治岛内陆湖泊的短途飞行，或是繁殖前期在水面休憩的停留记录）。 SG_RLKI_reproductive_productivity_2015_2017.csv 包含圣乔治岛2015、2016、2017年夏季的繁殖巢监测数据，对应年份的监测巢数分别为395、437与10个。 SG_RLKI_resights_2011_2017.csv 包含2015至2017年夏季在圣乔治岛收集的鸟类环志重见数据，同时还包含2010与2011年从少量佩戴脚环的鸟类捕获记录中提取的偶测数据。 SGRK_ResightEffort.csv 为SG_RLKI_resights_2011_2017.csv 中鸟类环志重见调查投入的元数据。 SG_RLKI_telomere_2010_2017.csv 包含2010至2017年间圣乔治岛红脚三趾鸥的端粒长度检测结果，为本研究的分析数据之一。 SG_RLKI_Capture_Phys_2015_2017.csv 包含所有与鸟类捕获相关的信息，包括捕获时间与地点、形态学测量指标、卵体积数据、鸟类佩戴的仪器类型，以及汞含量、碳氮稳定同位素比值、性别与皮质酮等样本检测结果。该数据表用于关联本数据集其余所有文件与各研究个体的元数据信息。