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Vasse-Wonnerup Estuary
The Vasse-Wonnerup Estuary is an estuary in the South West region of Western Australia close to the town of Busselton. The estuary is listed with DIWA.〔(【引用サイトリンク】title=Swan Coastal Plain 2 (SWA2 – Swan Coastal Plain subregion) )〕 It was also recognised as a wetland of international importance under the Ramsar Convention on 7 June 1990 when an area of 1115 ha was designated Ramsar Site 484 as an important dry-season habitat for waterbirds.〔(【引用サイトリンク】title=Information Sheet on Ramsar Wetlands (RIS) - Vasse-Wonnerup System, Western Australia - 38 )〕 It is also the main part of the 2038 ha Busselton Wetlands Important Bird Area.
==Description==
The estuary is wave dominated and has been severely modified from its natural state. The site of the Vasse and Wonnerup Floodgates that regulated the flow of water in the estuary from about 1907 inadvertently created the freshwater wetland, were listed on the Western Australian Register of Heritage Places in 2005.〔Site of Ballarat Bridge, Vasse Floodgates and Wonnerup Floodgates, State Register of Heritage Places http://register.heritage.wa.gov.au/viewplace.html?offset=1&place_seq=39056〕 The estuary covers a total surface area of with the central basin having an area of 〔(【引用サイトリンク】title=Estuary Assessment Framework for Non-Pristine Estuaries - Estuary 651 - Vasse-Wonnerup )〕 In winter, wide areas of open water are fringed by samphire and rushes. Paperbark woodland occurs behind the samphire belt, with eucalypt woodland on higher ground.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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