Effect of spatial and temporal variation in marine productivity on energy acquisition in southern elephant seals, Mirounga leonina

The demographic performance of high level antarctic predators is ultimately determined by the oceanic processes that influence the spatial and temporal distribution of primary productivity. This study will quantify the links between the foraging performance of southern elephant seals and a range of oceanographic parameters, including sea surface temperature, productivity and bathymetry. These data are a crucial component in understanding how antarctic predators will respond to changes in the distribution of marine and will be an important contribution to our understanding of the on-going decline in elephant seal numbers.Data were originally collected on Time Depth Recorders (TDRs), and stored in hexadecimal format. Hexadecimal files can be read using 'Instrument Helper', a free download from Wildlife Computers (see the URL given below). However, these data have been replaced by an Access Database version, and have also been loaded into the Australian Antarctic Data Centre's ARGOS tracking database. The database can be accessed at the provided URLs.顶级南极捕食者的种群统计表现，最终由影响初级生产力时空分布的海洋过程所决定。本研究将量化南象海豹的觅食表现与一系列海洋学参数之间的关联，这些参数包括海表温度、海洋生产力以及水深地形。本数据集是解析南极捕食者如何响应海洋生态系统分布变化的关键组成部分，同时也将为我们理解南象海豹种群数量持续下降的原因提供重要依据。数据最初通过时间深度记录仪（Time Depth Recorder, TDR）采集，并以十六进制格式存储。十六进制文件可通过'Instrument Helper'读取，该工具可从野生动物计算机公司（Wildlife Computers）免费下载（详见下方提供的URL）。不过，本数据集已被Access数据库版本替代，同时也已导入澳大利亚南极数据中心（Australian Antarctic Data Centre）的ARGOS跟踪数据库中。该数据库可通过提供的URL访问。

搜集汇总

背景与挑战

背景概述

该数据集聚焦于研究南象海豹的觅食表现与海洋生产力时空变化之间的关系，通过量化海面温度、生产力和水深等海洋学参数，旨在理解南极顶级捕食者对海洋环境变化的响应，并探讨象海豹数量下降的潜在原因。数据覆盖1999年至2005年，地理范围包括南大洋区域，原始数据来自时间深度记录器，现已整合到可公开访问的数据库中，适用于生态学和保护生物学研究。