User:Cygnis insignis

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Contents 1 Description 2 Distribution 3 Seagrasses of Western Australia 3.1 Distribution 3.2 Ecosystem 3.3 List of 3.4 References 3.5 Further reading 4 See also 5 References

[edit] Description

[edit] Distribution

[edit] Seagrasses of Western Australia

The Seagrasses of Western Australia are flowering plants in waters along the coast, around islands, and in estuaries of Western Australia. The region is distinguished by high levels of biodiversity and seagrass genera are more plentiful than any region of the world. The habitat found along western and southern coasts is often soft sands in shallow subtropical waters, ideal for these marine species. The West Australian coastline is approximately 12 500 km long, extending from 32-34°S to the timor sea at 12°S, tropical to temperate waters.

[edit] Distribution

• Southern Ocean, King George Sound, Archipelago of the Recherche

some areas of the southern coast provide suitable habitat.

• • (Leeuwin Current)
• Cockburn Sound, Rottnest, Swan River Estuary and so on ...
• Houtman Abrolhos
• Shark Bay 12 species - estimated 4,500 km² of seabed - the largest reported seagrass meadows in the world (Walker, 1989).
• Timor Sea, largely unsurveyed.

[edit] Ecosystem

Seagrasses are the foundation of complex ecosystems, primarily from the ability to colonise inshore coastal sand with its roots and matted rhizomes. These meadows are able to provide habitat to other species, especially epiphytic relationships, and are a food source for other organisms. Rock lobsters are found as juveniles amongst seagrass, receiving food and shelter until they reach maturity. The leaves are also eaten by dugong and other creatures.

[edit] List of

26 species in 10 genera:

Order: Hydrocharitales (= Alismatales) Lindley

• Family Hydrocharitaceae Jussieu

• • Enhalus acoroides (L.f.) Royle
  • Halophila decipiens Ostenfeld
  • Halophila ovalis (R.Br.) Hook.f.
  • Redirect Halophila ovata Gaud.
  • Halophila spinulosa (R.Br.) Aschers.
  • Halophila tricostata Greenway
  • Thalassia hemprichii (Ehrenb.) Aschers.

Order: Potamogetonales (= Alismatales) Tomlinson

• Family Cymodoceaceae Taylor
  • Amphibolis antarctica (Labill.) Sonder et Aschers. ex Aschers. (65236)
  • Amphibolis griffithii (J.Black) den Hartog (65236)
  • Cymodocea angustata Ostenfeld
  • Cymodocea serrulata (R.Br.) Aschers. et Magnus
  • Halodule pinifolia (Miki) den Hartog
  • Halodule uninervis (Forsk.) Aschers.
  • Syringodium isoetifolium (Aschers.) Dandy
  • Thalassodendron ciliatum (Forrsk.) den Hartog
  • Thalassodendron pachyrhizum den Hartog

• Family: Posidoniaceae Lotsy
  • Posidonia angustifolia Cambridge and Kuo (21875)
  • Posidonia australis Hook.f. (21875)
  • Posidonia coriacea Cambridge and Kuo
  • Posidonia denhartogii Kuo and Cambridge
  • Posidonia kirkmanii Kuo and Cambridge
  • Posidonia ostenfeldii den Hartog
  • Posidonia robertsoniae Kuo and Cambridge
  • Posidonia sinuosa Cambridge and Kuo

• Family: Zosteraceae Dummortier
  • Heterozostera tasmanica (Martens ex Aschers.) den Hartog
  • Zostera mucronata den Hartog
  • Zostera muelleri mucronata (Hartog) S.W.L.Jacobs
  • Zostera muelleri Asch.

[edit] References

• Seagrasses of Western Australia.
• New combinations in Australasian Zostera (Zosteraceae). Telopea 11(2) 127-128[2]
• Seagrasses: Seagrasses of Western Australia. State of the Marine Environment Report for Australia: The Marine Environment - Technical Annex: 1. CSIRO (Division of Fisheries). “Cockburn Sound ... by 1978, 97% of the original 34 km2 of seagrass had been lost (Cambridge & McComb 1984).”

[edit] Further reading

• Walker, D.I. (1990) Seagrass in Shark Bay, Western Australia. In: "Research in Shark Bay: Report of the France-Australe Bicentenary Expedition Committee." (Eds. P.F. Berry, S.D. Bradshaw, B.R. Wilson) (Western Australian Museum, Perth). p.101-6

[edit] See also

• /Sandbox
• /an incomplete list of wikipedia content created (or significantly expanded) by this contributor

[edit] References

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