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Christmas IslandChristmas Island
Science Article: The Christmas Island Red Crab
By Mrs. Carpenter
Christmas IslandChristmas Island
Named in 1643 for the day of its discovery, the island was annexed and settlement began by the UK in 1888. Phosphate mining began in the 1890s. The UK transferred sovereignty to Australia in 1958. Almost two-thirds of the island has been declared a national park.
Science Article: The Christmas Island Red Crab
Comparing Christmas Island to Comparing Christmas Island to ConnecticutConnecticut
Land Area 52 square miles
Population 1493 (July 2006 est.)
Land Area 5,544 square miles
Population 3,460,503
Berlin 26 square miles
Science Article: The Christmas Island Red Crab
Red CrabsRed Crabs
The best known of the 14 species of crab The best known of the 14 species of crab found on Christmas Island.found on Christmas Island.
Science Article: The Christmas Island Red Crab
Red Crabs are important in the Christmas Islandrainforest ecosystem.They eat fallen vegetation,leaves andfruit and recycle the nutrients contained in this material.Theircylindrical brown droppings scattered over the forest flooract as fertilizer.Their burrowing turns and aerates the soiland they are a major dertiminant of the unique structure andcomposition of the Christmas Island forest by their selectivebrowsing on seeds and seedlings.
Science Article: The Christmas Island Red Crab
The most dramatic animal The most dramatic animal migration in the world is the red migration in the world is the red
crab migration of Christmas crab migration of Christmas Island. Peak Migration lasts for 18 Island. Peak Migration lasts for 18
days.days.
Science Article: The Christmas Island Red Crab
Science Article: The Christmas Island Red Crab
High Dead Tolls Due to VehiclesHigh Dead Tolls Due to Vehicles
Science Article: The Christmas Island Red Crab
To reduce the number of crabs killed by vehicles during the migration,‘crab crossing ’ grids have been built into the roads which cross main crab migration paths,for crabs to pass through.Walls or plastic fencing that the crabs can not climb over are erected along the roadside to prevent the crabs getting on to the road,and to ‘funnel ’ the migrating crabs through the grids and under the road so that they may continue their migration unhindered by traffic.These crab crossings may be seen on most major roads. Other conservation measures used by the communit y are road closures and traffic detours around the major migration paths during peak migration periods.
Science Article: The Christmas Island Red Crab
Science Article: The Christmas Island Red Crab
Slowly click twice to open the video clip on WMP
The EndThe End
Science Article: The Christmas Island Red Crab
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Science Article: The Christmas Island Red Crab