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Pavona decussata

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Pavona decussata, sometimes known as leaf coral, is a species of colonial stony coral in the family Agariciidae. It is found in shallow water in various reef habitats, particularly on gently sloping surfaces, in tropical parts of the western and central Indo-Pacific region.

Description

Colonies of Pavona decussata are submasive structures, usually with leafy appendages or branches. These leaves are between 3 and 10 millimetres (0.1 and 0.4 in) thick and have corallites on both sides. The corallites are between 2 and 3 millimetres (0.08 and 0.12 in) in diameter and are mostly scattered irregularly, but are sometimes in rows parallel to the margins of the leaves or of the radial ridges. The colour varies, but may be greenish or some shade of brown, orange or creamy yellow.[2]

Distribution and habitat

Pavona decussata is native to the western and central Indo-Pacific region. Its range extends from East Africa and the Red Sea to Japan, the East China Sea, the Philippines, Papua New Guinea and eastern Australia. It is a fairly common species and occurs in various reef habitats especially on sloping surfaces, at depths down to about 15 metres (50 ft).[1]

Status

Pavona decussata is a common species with a widespread distribution. The population trend is unknown, however this coral is susceptible to bleaching, and it is probable that the number of mature colonies is decreasing as a result of destruction of its reef habitats. Its conservation status has been assessed as being "vulnerable" by the International Union for Conservation of Nature.[1]

References

  1. ^ a b c Hoeksema, B.W.; Rogers, A.; Quibilan, M.C. (2014). "Pavona decussata". IUCN Red List of Threatened Species. 2014: e.T133041A54183041. doi:10.2305/IUCN.UK.2014-1.RLTS.T133041A54183041.en. Retrieved 13 November 2021.
  2. ^ a b c Hoeksema, Bert (2015). "Pavona decussata (Dana, 1846)". WoRMS. World Register of Marine Species. Retrieved 2015-06-20.
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Pavona decussata: Brief Summary

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Pavona decussata, sometimes known as leaf coral, is a species of colonial stony coral in the family Agariciidae. It is found in shallow water in various reef habitats, particularly on gently sloping surfaces, in tropical parts of the western and central Indo-Pacific region.

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Biology

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Reference

van der Land, J. (ed). (2008). UNESCO-IOC Register of Marine Organisms (URMO).

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Description

provided by World Register of Marine Species
Coralla form submassive structures, almost always seen with stout leafy or branch like appendages, or are masses of thick, angular leaves and anastomosing projections. Leaves are 3 to 10 mm thick, which is much thicker than in Pavona cactus, and calices are also larger, being about 2 to 3 mm diameter. The distribution of this species is similar to that of Pavona cactus, preferring gently sloping substrates and able to tolerate moderate sedimentation. It is common, but does not develop giant colonies in the manner of P. cactus (Sheppard, 1998). Colonies are thick, interconnecting, bifacial upright laminae, or are submassive, with or without lobed horizontal margins and upright laminae. Corallites are irregular, deep-seated, sometimes aligned parallel to margins or to radiating ridges. Colour: brown, creamy yellow or greenish. Abundance: common over a wide range of shallow-water environments (Veron, 1986). Colony of paddle-like upright fronds, about 5 mm thick and 3 cm long, comprised of irregularly-spaced corallites. Colour: orange or brown. Habitat: diverse, especially in areas of high sediment load. (Richmond, 1997)

Reference

Roux, J.P. (2001) Conspectus of Southern African Pteridophyta. Southern African Botanical Diversity Network Report 13 Page 118 (Includes a picture).

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