Adélie penguin occupancy survey of the Balaena Islands, 2012

An occupancy survey on 26 January 2012 found 1 island (70166) along the coast between 111 degrees 00'E - 111 degrees 10'E had populations of breeding Adélie penguins. The survey was conducted from a fixed wing aircraft and oblique aerial photographs were taken of the occupied site. The aerial photographs were geo-referenced to the coastline shapefile from the Landsat Image Mosaic of Antarctica (LIMA, tile E158) and the boundaries of penguin colonies were digitised from the geo-referenced photos with not intentional buffer. Note the quality of the aerial photos was poor and so the resultant boundary mapping will not be very accurate. Also in the Balaena Islands there is a historic record from the 50s of penguins nesting on Thompson Islet (70166). When aerial photos were taken of this island penguins could not be detected.Please refer to the Seabird Conservation Team Data Sharing Policy for use, acknowledgement and availability of data prior to downloading data.

2012年1月26日开展的栖息状况调查显示，在东经111°00′至111°10′的沿海区域内的一座编号为70166的岛屿上，栖息着繁殖期的阿德利企鹅（Adélie penguins）种群。本次调查采用固定翼飞机实施，对该栖息点位拍摄了倾斜航空照片。上述航空照片已参照南极洲陆地卫星图像镶嵌图（Landsat Image Mosaic of Antarctica，简称LIMA）E158幅的海岸线shapefile文件完成地理配准，研究人员从已完成地理配准的照片中数字化勾勒出企鹅群落的边界，未刻意设置缓冲区。需注意，本次航空照片的成像质量较差，因此最终生成的边界测绘结果精度有限。此外，在巴莱恩群岛（Balaena Islands），20世纪50年代曾有历史记录显示编号为70166的汤普森岛（Thompson Islet）上存在企鹅筑巢的记录，但后续对该岛屿拍摄航空照片时未检测到企鹅存在。下载数据前，请参阅《海鸟保护团队数据共享政策》，以了解数据的使用规范、引用要求及获取方式。