Juvenile Herring Condition Monitoring in Prince William Sound, Growth and Diet Data, 2012-2016, EVOS Herring Program

These data are part of the Herring Program of the Exxon Valdez Oil Spill Trustee Council, which is a multi-faceted study to determine why herring populations in Prince William Sound (PWS) remain depressed since the early 1990s. The dataset is six comma-separated value (csv) files exported from a Microsoft Access database containing data related to herring diets, growth, and energy stores. Age-0 herring were collected on research cruises using trawl, cast and gill nets from several study sites located throughout Prince William Sound in November and March for four winters (November 2012 through March 2016), as part of the PWS Herring Program (project numbers 12120111-L, 14120111-L, 16120111-L). Herring were collected at sea, frozen, and transported by air to the NOAA Auke Bay Laboratory in Juneau, Alaska for length and weight measurements and chemical analysis. Different data types are contained within each file. The file named Custody contains field collection information. The file named BioData includes length and weight measurements, and the weight of fish stomach contents. The file named RNADNA includes the ratio of ribonucleic acid (RNA) to deoxyribonucleic acid (DNA) contents of herring white muscle tissue, which were used as an indicator of the relative amount of energy individual fish were allocating towards growth (with higher RNA/DNA reflecting greater protein synthesis rates). The file named Diet contains the enumeration of individual prey items in herring stomach contents. The file named ProxComp contains the moisture, ash, lipid, and protein content of homogenized whole herring as a percentage of wet tissue mass. The file named Parts includes the sample identification numbers and the tissues types of any organs weighed.

本数据集隶属于埃克森·瓦尔迪兹溢油赔偿委员会（Exxon Valdez Oil Spill Trustee Council）的鲱鱼研究项目，该项目为多维度综合性研究，旨在探明1990年代初以来威廉王子湾（Prince William Sound, PWS）鲱鱼种群持续低迷的成因。
本数据集包含6个逗号分隔值（comma-separated value, CSV）文件，均导出自Microsoft Access数据库，涵盖与鲱鱼食性、生长及能量储备相关的全部研究数据。
2012年11月至2016年3月的四个冬季科考周期内，研究团队在威廉王子湾全域多个研究站点，通过拖网、抛网及刺网开展巡航采样，共采集0龄鲱鱼样本，相关工作隶属于威廉王子湾鲱鱼研究项目（项目编号：12120111-L、14120111-L、16120111-L）。
采集的鲱鱼样本在海上完成冷冻固定，随后通过空运送往位于阿拉斯加州朱诺市的NOAA奥克湾实验室（NOAA Auke Bay Laboratory），用于开展体长、体重测量及化学分析。
各文件存储不同类型的细分数据：名为Custody的文件包含野外采样的全流程信息；BioData文件包含鲱鱼的体长、体重测量数据及胃含物重量；RNADNA文件包含鲱鱼白色肌肉组织的核糖核酸（ribonucleic acid, RNA）与脱氧核糖核酸（deoxyribonucleic acid, DNA）比值，该指标可用于反映个体鱼类分配于生长的相对能量水平，更高的RNA/DNA比值对应更高的蛋白质合成速率；Diet文件包含鲱鱼胃含物中各类猎物个体的计数数据；ProxComp文件包含均质化全鲱鱼样本的水分、灰分、脂质及蛋白质含量（以湿组织质量百分比计）；Parts文件包含样本识别编号及所有称重器官的组织类型。