Rottnest Island lakes, swamps and coastal bird counts December 1981 to September 2007

The salt lakes and swamps of Rottnest Island were surveyed by two observers, who between them walked round all the lakes and swamps (see figure of lakes and swamps below), with the exception of Barker Swamp, in the centre of the island. All birds, except Silver Gulls, seen around or on the lakes and swamps were identified and counted.\nThe coastal surveys was conducted by one observer who drove round the island, stopping at 32 vantage points (see figure of observation locations below), from which observations were made with the aid of a telescope on a tripod and binoculars. All birds (with the exception of Silver Gulls) were identified and counted. Any species seen that were not initially identified were approached to identify them. \nThree complete surveys of birds of the coast were conducted between 24-27 September 1982, 21-23 September 1992 and 3-4 September 2007 by the same observer. These surveys commenced at the main jetty on Thomson Bay and involved walking anti-clockwise around the island; a distance of 37km. All beaches and cliff faces were traversed and the observer walked as close to the cliff edges as safety permitted. Counts were made of all non-terrestrial birds, with the exception of Silver Gull\nLineage: These data on the birds of the salt lakes, swamps and coast of Rottnest Island were collected by Research Scientist Denis Saunders and Technical Officer Perry de Rebeira of CSIRO Division of Wildlife and Rangelands Research as part of research on island bird communities. The data were analysed and used in the following papers:\nSaunders, D. A. and C. P. de Rebeira (1985). Turnover in breeding bird populations on Rottnest Island, Western Australia. Australian Wildlife Research 12: 467-77.\nSaunders, Denis A. and Perry de Rebeira (2009). A case study of the conservation value of a small tourist resort island: birds of Rottnest Island, Western Australia 1905-2007. Pacific Conservation Biology 15: 11-31.\nand summarised in the book:\nSaunders, Denis and Perry de Rebeira (1993). Birds of Rottnest Island. DAS and CPdeR, Guildford WA. ISBN 0 9593247 3 9\n

罗特尼斯岛（Rottnest Island）的盐湖与沼泽由两名观测者开展调查。两人共同绕行所有湖泊与沼泽（详见下文湖泊与沼泽示意图），仅除外岛屿中央的巴克沼泽（Barker Swamp）。观测者对湖泊与沼泽周边及内部所见的所有鸟类（银鸥（Silver Gull）除外）进行了识别与计数。
海岸调查由一名观测者完成，该观测者驾车绕行全岛，在32个观测点（详见下文观测点示意图）停留。观测时借助三脚架上的望远镜与双筒望远镜进行观察。所有鸟类（银鸥除外）均被识别并计数；对于初次观测未能识别的物种，观测者会靠近以进一步确认。
同一观测者分别于1982年9月24-27日、1992年9月21-23日及2007年9月3-4日完成了三次完整的海岸鸟类调查。调查始于汤姆森湾（Thomson Bay）主码头，观测者逆时针步行绕行全岛，全程37公里。观测者遍历所有海滩与崖壁，并在安全允许的范围内尽可能靠近崖边行走。对所有非陆生鸟类（银鸥除外）进行了计数。
数据来源：罗特尼斯岛盐湖、沼泽及海岸鸟类数据由澳大利亚联邦科学与工业研究组织（CSIRO）野生动物与牧场研究部的研究员Denis Saunders及技术官员Perry de Rebeira收集，作为岛屿鸟类群落研究的一部分。这些数据经分析后用于以下论文：Saunders, D.A. 与 C.P. de Rebeira（1985）.《西澳大利亚罗特尼斯岛繁殖鸟类种群的周转》，《澳大利亚野生动物研究》12：467-77；Saunders, Denis A. 与 Perry de Rebeira（2009）.《小型旅游度假岛保护价值的案例研究：1905-2007年西澳大利亚罗特尼斯岛的鸟类》，《太平洋保护生物学》15：11-31；并被总结于著作：Saunders, Denis 与 Perry de Rebeira（1993）.《罗特尼斯岛鸟类》，DAS与CPdeR出版社，西澳大利亚吉尔福德，ISBN 0 9593247 3 9