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Ardery Island, along with nearby Odbert Island, is protected under the Antarctic Treaty System as Antarctic Specially Protected Area (ASPA) No.103 because they support several breeding species of petrel and provide examples of their habitat, notably that of Antarctic Petrels and Southern Fulmars.
The island has been designated an Antarctic Specially Protected Area (ASPA 109) mainly for its biological values, especially the banks of Chorisodontium–Polytrichum moss turf and Andreaea–Usnea fellfield.
The site has been designated an Antarctic Specially Protected Area (ASPA 137) because it supports an unusual small breeding population of Weddell Seals, which is not only the most southerly known, but which has also been physically isolated from other populations by the advance of the McMurdo and Ross ice shelves.
Odbert Island, along with nearby Ardery Island, is protected under the Antarctic Treaty System as Antarctic Specially Protected Area (ASPA) No.103 because they support several breeding species of petrel and provide examples of their habitat, notably that of Antarctic Petrels and Southern Fulmars.