The Wrangel Island Reserve is a self-contained island ecosystem and there is ample evidence that it has undergone a long evolutionary process uninterrupted by the glaciation that swept most other parts of the Arctic during the Quaternary period. The number and type of endemic plant species, the diversity within plant communities, the rapid succession and mosaic of tundra types, the presence of relatively recent mammoth tusks and skulls, the range of terrain types and geological formations in the small geographic space are all visible evidence of Wrangel’s rich natural history and its unique evolutionary status within the Arctic. Furthermore, the process is continuing as can be observed in, for example, the unusually high densities and distinct behaviours of the Wrangel lemming populations in comparison with other Arctic populations or in the physical adaptations of the Wrangel Island reindeers, where they may now have evolved into a separate population from their mainland cousins. Species interaction strategies are highly-honed and on display throughout the island, especially near Snowy owl nests which act as protectorates for other species and beacons for migratory species and around fox dens.
The Wrangel Island Reserve has the highest level of biodiversity in the high Arctic. The island is the breeding habitat of Asia’s only Snow goose population which is slowly making a recovery from catastrophically low levels. The marine environment is an increasingly important feeding ground for the Gray whale migrating from Mexico (some from another World Heritage site, the Whale Sanctuary of El Vizcaino). The islands have the largest sea-bird colonies on the Chukchi Sea, are the northernmost nesting grounds for over 100 migratory bird species including several that are endangered such as the Peregrine falcon, have significant populations of resident tundra bird species interspersed with migratory Arctic and non-Arctic species and have the world’s highest density of ancestral polar bear dens. Wrangel Island boasts the largest population of Pacific walrus with up to 100,000 animals congregating at any given time at one of the island’s important coastal rookeries. Since Wrangel Island contains a high diversity of habitats and climates and conditions vary considerably from one location to another, total reproductive failure of a species in any given year is practically unheard of. Given the relatively small size of the area, this is very unusual in the high Arctic.
The role that fair value or "mark-tolmarket" accounting may have played in the recent financial crisis is the subject of an ongoing debate among practitioners, regulators, and academics (e.g., see Laux and Leuz (2009)). Proponents of fair value accounting argue that a balance sheet based on market prices leads to better insights into the current risk profiles of financial institutions. Regulators could therefore intervene in a more timely and effective manner to influence managerial decisions. Tools such as regulatory capital requirements could be used to prevent the ineffi cient choices or continuation of bad projects.
You can connect wirelessly to other compatible devices with Bluetooth technology. Compatible devices may include mobile phones, computers, and enhancements such as headsets and car kits. You can use wireless Bluetooth technology to send images, video clips, music and sound clips, and notes; to connect wirelessly to your compatible PC (for example, to transfer files); or toconnect to a compatible printer to print images with image print. See ‘Image print’, p. 44.
Since devices with wireless Bluetooth technology communicate using radio waves, your device and the other device do not need to be in direct line-of-sight. The two devices only need to be within 10 metres (32 feet) of each other, although the connection may be subject to interference from obstructions such as walls or from other electronic devices.
