Adélie penguin occupancy survey of the Wilkes Land Coastline, 2011

An occupancy survey on 21 January 2011 found a total of 7 islands along the Wilkes Land coastline had populations of breeding Adélie penguins. The survey was conducted from a fixed wing aircraft and oblique aerial photographs were taken of each occupied site except Haswell Island. The aerial photographs were geo-referenced to a satellite image and the boundaries of penguin colonies were digitised from the geo-referenced photos. Details for each island are:Adams: Photographs taken on 21 January 2011 and geo-referenced to a Quickbird satellite image taken on 30 January 2009Fulmar: Photographs taken on 21 January 2011 and geo-referenced to a WorldView2 satellite image taken on 6 February 2011Zykov: Photographs taken on 21 January 2011 and geo-referenced to a WorldView2 satellite image taken on 6 February 2011Buromskiy: Photographs taken on 21 January 2011 and geo-referenced to a WorldView2 satellite image taken on 6 February 2011Stroitley: Photographs taken on 21 January 2011 and geo-referenced to a WorldView2 satellite image taken on 6 February 2011Tokarev: Photographs taken on 21 January 2011 and geo-referenced to a WorldView2 satellite image taken on 6 February 2011Haswell: No photographs taken, no penguin colonies were digitisedNote there are two colony boundary layers in each folder except Adams. One is the original layer mapped as above. The second is an adjusted layer that was created so that the mapped boundaries would land on the exposed rock layer. Mapping of some of the islands contained within the coast layer had been coarsely done using imagery available at the time. Now with more accurate satellite imagery the island mapping could potentially be updated which would more accurately locate these islands. If this occurred, the original colony boundary mapping may be a more appropriate fit.Please refer to the Seabird Conservation Team Data Sharing Policy for use, acknowledgement and availability of data prior to downloading data.

2011年1月21日开展的种群调查显示，威尔克斯地（Wilkes Land）沿岸共计7座岛屿栖息有繁殖期的阿德利企鹅（Adélie penguin）。本次调查采用固定翼飞机执行，除哈斯韦尔岛（Haswell Island）外，所有存在企鹅栖息的点位均拍摄了倾斜航空照片。随后将航空照片地理配准（geo-referenced）至卫星影像，并从配准后的照片中数字化提取企鹅群落的边界。

各岛屿的详细信息如下：
亚当斯岛（Adams）：2011年1月21日拍摄照片，配准至2009年1月30日获取的Quickbird卫星影像。
富尔马尔岛（Fulmar）：2011年1月21日拍摄照片，配准至2011年2月6日获取的WorldView2卫星影像。
济科夫岛（Zykov）：2011年1月21日拍摄照片，配准至2011年2月6日获取的WorldView2卫星影像。
布龙姆斯基岛（Buromskiy）：2011年1月21日拍摄照片，配准至2011年2月6日获取的WorldView2卫星影像。
斯特罗伊特利岛（Stroitley）：2011年1月21日拍摄照片，配准至2011年2月6日获取的WorldView2卫星影像。
托卡列夫岛（Tokarev）：2011年1月21日拍摄照片，配准至2011年2月6日获取的WorldView2卫星影像。
哈斯韦尔岛（Haswell）：未拍摄照片，未数字化提取企鹅群落边界。

需注意，除亚当斯岛外，每个文件夹中均包含两套群落边界图层：其一为上述方法绘制的原始图层；其二为经调整的图层，该图层的绘制目的是使群落边界与裸露岩层的位置匹配。此前部分沿岸岛屿的制图仅基于当时可用的影像，精度较为粗糙。如今随着卫星影像精度提升，这些岛屿的边界可进行更新，从而更精准地定位岛屿。若开展此类更新，原始的企鹅群落边界绘制结果可能会更适配新的岛屿图层。

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