Rauer Group Petrels. Breeding distribution and abundance of surface-nesting petrels in the Rauer Islands, East Antarctica.

Previous exploration and ornithology in the Rauer Group are reviewed. Estimates of the nesting populations of southern fulmars and Antarctic petrels are compared with censuses conducted in 1983/84 and 1984/85. Population estimates varied considerably between years, and within the same year between different observers. To remedy this situation the three islands with sympatric breeding populations of the two species were divided into counting units, which are detailed with photographs. The total populations of surface-nesting petrels are in the order of 14000 pairs of fulmars, 2500 pairs of Antarctic petrel and 400 pairs of cape petrels. Chick survival was estimated at the time of banding and varied considerable between species, islands and years. The fields in this dataset are:Location: Filla Island, Buchan Island and Hop Island Southern Fulmar Antarctic Petrel Cape Petrel Birds Counted Estimated Pairs Population Estimates Chick survival Occupied Nests Number of Birds Conversion factor

本文对劳尔群岛（Rauer Group）既往的考察与鸟类学研究进行了综述。本研究将南方暴雪鹱（southern fulmar）与南极鹱（Antarctic petrel）的巢群数量估算值，与1983/84及1984/85年度开展的普查结果进行对比后发现，种群数量估算结果在不同年度间差异显著，且在同一年度内，不同观测者所得结果也存在较大偏差。为解决这一问题，研究人员将栖息有该两种鸟类同域繁殖种群的三座岛屿划分为若干统计单元，并通过照片对各单元进行了详细说明。地表筑巢的鹱类总种群规模约为：南方暴雪鹱14000对、南极鹱2500对以及岬海燕（cape petrel）400对。雏鸟存活率在环志阶段完成估算，且该指标在不同物种、不同岛屿及不同年度间均存在显著差异。本数据集包含以下字段：地点、南方暴雪鹱（southern fulmar）、南极鹱（Antarctic petrel）、岬海燕（cape petrel）、统计鸟类数量、估算配对数、种群数量估算值、雏鸟存活率、已占用巢位、鸟类个体数、转换系数。