Blood oxygen transport and depletion in diving emperor penguins

# Blood oxygen transport and depletion in diving emperor penguins Data were collected with backpack recorders on diving emperor penguins, and then downloaded to computers for processing. Research was conducted at a sea ice camp in McMurdo Sound, Antarctica in 2001-2008 (see this article and related citations for details of procedures, data collection, and prior analyses of data). There were two types of recorders: an oxygen recorder and a depth recorder. The recorders stored time (mm dd yyyy hh:mm:ss) and depth (meters), and time (mm dd yyyy hh:mm:ss) and the partial pressure of oxygen (PO2, mm Hg). These data allowed construction of oxygen and depth profiles versus time. A given bird had either an arterial or venous oxygen electrode (one electrode per bird). As explained in the paper, the PO2 was converted to hemoglobin saturation (%) with use of the emperor penguin O2-hemoglobin dissociation curve from Meir and Ponganis, 2009. In this paper, the profiles were sorted into three groups according to the type of hemoglobin saturation profile: arterial, Type A venous, and Type B venous. Criteria for Type A and Type B venous saturation profiles are described in the text. ## Description of the data and file structure There are two files. * Saturation Profile Groups - ID & Dive Parameters.xlsx * Dive depth & Hb saturation data.xlsx There are two .xlsx files in the directory. The first file (**Saturation Profile Groups - ID & Dive Parameters.xlsx**) summarizes oxygen profile and dive characteristics for all dives in the study. The summary for each group (arterial, Type A venous, Type B venous) included Bird ID, Dive ID (the number assigned to a given dive), dive duration (minutes), maximum dive depth (meters), start time and end time (time is in hh:mm:ss). The second file (**Dive depth & Hb saturation data.xlsx**) contains serial collections of time, blood partial pressure of oxygen (PO2 in mm Hg), hemoglobin saturation (%, calculated with the pH 7.5 oxygen-hemoglobin dissociation curve) and depth (meters) for each bird. Blood oxygen and depth data are on a single worksheet for each bird in that file. On each worksheet, the Bird ID and a brief summary of the data are given at the top of the page. Time, PO2 and hemoglobin saturation are listed in the first set of columns; time and depth are presented in the second set of columns. Time is either in date/time (M D YYYY h:mm:ss.000) or in time (in hh:mm:ss.000) depending upon the bird.# 帝企鹅潜水时的血氧运输与耗竭数据集 本数据集的原始数据采集自搭载背负式记录仪（backpack recorders）的潜水帝企鹅，数据经下载至计算机后完成处理。研究于2001至2008年间在南极洲麦克默多湾的海冰营地开展，实验流程、数据采集方法及既往数据分析细节详见本文及相关引用文献。 本次研究使用两类记录仪：血氧记录仪与深度记录仪。两类记录仪均存储时间信息（格式为月 日 年 时:分:秒），其中深度记录仪记录潜水深度（单位：米），血氧记录仪则记录血氧分压（partial pressure of oxygen, PO2，单位：毫米汞柱）。基于上述采集数据可构建血氧与深度随时间变化的剖面曲线。 每只受试企鹅仅搭载一枚动脉或静脉血氧电极。如本文所述，研究采用Meir与Ponganis于2009年发表的帝企鹅血氧-血红蛋白解离曲线（oxygen-hemoglobin dissociation curve），将实测PO2转换为血红蛋白（hemoglobin, Hb）饱和度（百分比%）。本文中将血氧饱和度剖面分为三类：动脉型、A型静脉型与B型静脉型，A型与B型静脉饱和度剖面的判定标准详见正文。 ## 数据与文件结构说明 本数据集包含两个.xlsx格式文件： * *Saturation Profile Groups - ID & Dive Parameters.xlsx* * *Dive depth & Hb saturation data.xlsx* 两个文件存储于同一目录下。 第一个文件（**Saturation Profile Groups - ID & Dive Parameters.xlsx**）汇总了本研究中所有潜水的血氧剖面与潜水特征信息。按分组（动脉型、A型静脉型、B型静脉型）的汇总内容包括：企鹅编号（Bird ID）、潜水编号（Dive ID，即单次潜水的分配编号）、潜水时长（单位：分钟）、最大潜水深度（单位：米）、潜水开始与结束时间（时间格式为"hh:mm:ss"）。 第二个文件（**Dive depth & Hb saturation data.xlsx**）包含每只企鹅的时序采集数据集，具体字段包括：时间、血液PO2（单位：mm Hg）、Hb饱和度（%，采用pH 7.5的血氧-血红蛋白解离曲线计算所得）以及潜水深度（单位：米）。该文件中，每只企鹅的数据单独占用一个工作表。每个工作表的顶部均标注有企鹅编号与数据简要说明。第一组列依次记录时间、PO2与Hb饱和度；第二组列依次记录时间与潜水深度。根据企鹅个体差异，时间格式可为日期时间格式（M D YYYY h:mm:ss.000）或纯时间格式（"hh:mm:ss.000"）。