Lihou Reef National Nature Reserve

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Lihou Reef and Cays
NASA photo
NASA photo
Waters Coral sea
archipelago Coral Sea Islands
Geographical location 17 ° 25 ′  S , 151 ° 40 ′  E Coordinates: 17 ° 25 ′  S , 151 ° 40 ′  E
Lihou Reef National Nature Reserve (Queensland)
Lihou Reef National Nature Reserve
Number of islands 18th
Main island Lorna Cay
length 100 km
width 30 km
Land area 1.03 km²
total area 2 529  km²
Highest elevation m
Residents uninhabited
Situation map
Situation map

Lihou Reef National Nature Reserve is a 8,440 km² marine reserve in Australia in the Coral Sea . The eponymous atoll Lihou Reef should not be confused with the island of Lihou . It is located off the east coast of Australia about 700 km from Cairns in Queensland . Together with the Coringa-Herald National Nature Reserve 100 km away , it forms the larger Coral Sea Reserves Ramsar Site with an area of ​​17,290 km, which was established on August 16, 2002. It is a wetland of international importance according to the Ramsar Convention and one of the largest lagoons in the world.

history

Now known as Lihou Reef and Cays , the atoll was discovered by Lieutenant John Lihou of the Royal Navy on February 23, 1823. Lihou, who was a ship master on the brig HMS Zenobia , was en route from Manila to South America . After a dangerous passage through the Great Barrier Reef , it left this through an opening in the Murray Islands . On the further journey through the Coral Sea , the atoll Lihou Reef and Cays , 1155 km as the crow flies from the Murray Islands, was sighted.

geography

The Lihou Reef is the second largest atoll in the Coral Sea , according to to New Caledonia belonging Chesterfield Islands (here the even larger submarine is Lansdowne Bank not included). It is U-shaped, with an opening in the southwest. The size of the lagoon measures 100 by 30 km, with an area of ​​2,529 km², and makes this atoll one of the largest in the world, although the total land area of ​​all islands on the fringing reef ( Cays ) is barely more than one square kilometer. The lagoon is about 60 m deep. The marine reserve includes 18 cays, 9 each in the Northern Rim and 9 in the Southern Rim , ranging in size from 0.5 to 16.8 hectares .

Northern Rim
(clockwise
southwest to northeast)
Cay Area
ha
Juliette Cay 7.8
Kathy Cay 4.0
Lorna Cay 16.8
Little Margaret Cay 1.0
Margaret Cay 3.0
Turtle Islet 3.1
Middle Cay 7.8
Observatory Cay 8.8
Licklick Cay 4.0
Northern Rim 56.0
Southern Rim
(clockwise
from northeast to southwest)
Cay Name variant Area
ha
Anne Cay "No 1 Cay" 11.2
Betty Cay "No 2 Cay" 3.7
Carol Cay "No 3 Cay" 0.5
Dianna Cay "No 4 Cay" 1.6
Fanny Cay "No 5 Cay" 0.7
Edna Cay "No 6 Cay" 7.3
Helen Cay "No 7 Cay" 1.0
Georgina Cay "No 8 Cay" 10.5
Nellie Cay "No 9 Cay" 10.4
Southern Rim   47.0

The cays with vegetation are marked in green in the table.

Turtle Islet is 6 m above sea level and Observatory Cay is 2 m above sea level. There is an automated weather station on Turtle Islet .

In the northeast of Anne Cay , the Herald Passage can be used to access the lagoon.

Flora and fauna

The flora and fauna of this sea area is different from the Great Barrier Reef , which lies to the west. There are fish, hermit crabs , starfish , various algae, corals, sea ​​urchins and sea ​​cucumbers . The protected green sea turtle, dolphins and whales are also found.

Bird species such as red-footed booby , ariel frigate and red-tailed tropical bird can be found in this marine reserve.

Web links

Individual evidence

  1. ^ The Annotated Ramsar List: Australia . The Ramsar Convention on Wetlands. January 4, 2000. Retrieved March 29, 2010.
  2. ^ Source: Hydrographic Service - Royal Australian Navy. (MA BOLGER. Lieutenant Commander RAN for DIRECTOR HYDROGRAPHIC OFFICE. July 19, 1985)