Seal census raw data of campaigns EMAGE I to V between 1996 and 2000 with links to datasets

The development of models of marine ecosystems in the Southern Ocean is becoming increasingly important as a means of understanding and managing impacts such as exploitation and climate change. Collating data from disparate sources, and understanding biases or uncertainties inherent in those data, are important first steps for improving ecosystem models. This review focuses on seals that breed in ice habitats of the Southern Ocean (i.e. the crabeater seal, Lobodon carcinophaga; Ross seal, Ommatophoca rossii; leopard seal, Hydrurga leptonyx; and Weddell seal, Leptonychotes weddellii). Data on populations (abundance and trends in abundance), distribution and habitat use (movement, key habitat and environmental features) and foraging (diet) are summarised, and potential biases and uncertainties inherent in those data are identified and discussed. Spatial and temporal gaps in knowledge of the populations, habitats and diet of each species are also identified.南大洋海洋生态系统模型的开发，正日益成为理解并管控捕捞活动、气候变化等带来的影响的重要手段。从分散数据源中整合数据，并明晰这些数据本身固有的偏差与不确定性，是优化生态系统模型的关键前置步骤。本综述聚焦于在南大洋冰生境中繁殖的海豹类群，具体包括食蟹海豹（crabeater seal, *Lobodon carcinophaga*）、罗斯海豹（Ross seal, *Ommatophoca rossii*）、豹形海豹（leopard seal, *Hydrurga leptonyx*）以及威德尔海豹（Weddell seal, *Leptonychotes weddellii*）。本综述对各类相关数据进行了梳理总结，涵盖种群信息（种群数量及其变化趋势）、分布与生境利用情况（移动规律、关键生境与环境特征）以及觅食行为（食性），同时明晰并探讨了这些数据本身存在的潜在偏差与不确定性。此外，本研究还指出了当前在各物种种群、生境及食性相关认知上存在的时空空白。