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Redalyc.ARE OUR ORCHIDS SAFE DOWN UNDER? Lankesteriana International Journal on Orchidology ISSN: 1409-3871 [email protected] Universidad de Costa Rica Costa Rica BACKHOUSE, GARY N. ARE OUR ORCHIDS SAFE DOWN UNDER? A NATIONAL ASSESSMENT OF THREATENED ORCHIDS IN AUSTRALIA Lankesteriana International Journal on Orchidology, vol. 7, núm. 1-2, marzo, 2007, pp. 28- 43 Universidad de Costa Rica Cartago, Costa Rica Available in: http://www.redalyc.org/articulo.oa?id=44339813005 How to cite Complete issue Scientific Information System More information about this article Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Journal's homepage in redalyc.org Non-profit academic project, developed under the open access initiative LANKESTERIANA 7(1-2): 28-43. 2007. ARE OUR ORCHIDS SAFE DOWN UNDER? A NATIONAL ASSESSMENT OF THREATENED ORCHIDS IN AUSTRALIA GARY N. BACKHOUSE Biodiversity and Ecosystem Services Division, Department of Sustainability and Environment 8 Nicholson Street, East Melbourne, Victoria 3002 Australia [email protected] KEY WORDS:threatened orchids Australia conservation status Introduction Many orchid species are included in this list. This paper examines the listing process for threatened Australia has about 1700 species of orchids, com- orchids in Australia, compares regional and national prising about 1300 named species in about 190 gen- lists of threatened orchids, and provides recommen- era, plus at least 400 undescribed species (Jones dations for improving the process of listing regionally 2006, pers. comm.). About 1400 species (82%) are and nationally threatened orchids. geophytes, almost all deciduous, seasonal species, while 300 species (18%) are evergreen epiphytes Methods and/or lithophytes. At least 95% of this orchid flora is endemic to Australia. While the tropical and subtropi- The national government of Australia and each of cal epiphytic/lithophytic orchid flora is low by world the six Australian state and two territory governments standards, the temperate terrestrial orchid flora is have processes for listing threatened species under amongst the richest and most diverse of any compara- biodiversity conservation legislation within each ble region in the world. jurisdiction (Table 1). To establish the number of Like many places on our planet, biodiversity and threatened orchids included in these lists, the sched- natural habitats in Australia have suffered substantial ules of each Act were checked and listed orchids declines and range in abundance through agricultural, identified (Appendix 1). The State of Victoria also industrial and urban development. The Australian maintains a published ‘advisory’ (non-legislative) list Government Environment Protection and of rare or threatened flora. This list was also checked Biodiversity Conservation Act 1999 (EPBC Act) cur- for numbers of threatened orchids and compared rently lists 106 species of flora and fauna as extinct, against the state legislative list. Comprehensive and a further 1582 species as threatened, in Australia. reviews of the conservation status of orchids at the TABLE 1. National and state/territory legislation listing extinct, rare or threatened orchids in Australia. Jurisdiction Legislation Australia Environment Protection & Biodiversity Conservation Act 1998 Australian Capital Territory Nature Conservation Act 1980 New South Wales Threatened Species Conservation Act 1995 Northern Territory Parks & Wildlife Conservation Act 2000 Queensland Nature Conservation Act 1992 South Australia National Parks & Wildlife Act 1972 Tasmania Threatened Species Protection Act 1995 Victoria Flora & Fauna Guarantee Act 1988 Western Australia Wildlife Conservation Act 1950 BACKHOUSE - Assessment of threatened orchids Australia 29 state level, for South Australia (Bates 2006), and TABLE 2. Number of extinct, threatened and rare orchid Victoria (Backhouse & Cameron 2005, DSE 2005), species in Australia by jurisdiction. were checked and compared to official legislative lists for those states. Scientific names were generally left as they were on the lists, despite many names no longer being valid due to changes in taxonomy. For instance, all Australian species of Bulbophyllum Thouars and all but one Australian Dendrobium Sw. species have been assigned to new genera (Jones 2006). However, in a few cases, species were listed under different names on different lists eg. the current name Corunatylis tecta (D.L. Jones) D.L. Jones & M.A. Clem. is listed under the EPBC Act, while the former Shaded boxes indicate where the conservation status category is not used in the national/state/territory legislation name Genoplesium tectum D.L. Jones is still listed Abbreviations under the Queensland Nature Conservation Act 1992. Rows are conservation status categories: EX = extinct; EW = extinct In these cases, the currently accepted scientific name in the Wild; CR = critically endangered; EN = endangered; VU = vul- has been used. nerable; RA = rare; TH = threatened; CD = conservation cependent Columns are jurisdictions: NAT = National; NT = Northern Definitions – Any examination of different systems Territory; Qld = Queensland; NSW = New South Wales; ACT = for describing the conservation status of threatened Australian Capital Territory; Vic = Victoria; Tas = Tasmania; SA = species immediately runs into the issue of varying South Australia; WA = Western Australia. classification systems and definitions. The nine Australian orchid flora) listed as extinct, threatened or state/territory and national legislative systems collec- rare at the regional (ie. state or territory) level. State tively use eight terms to describe conservation status and territory threatened species lists include another (Table 2). In this paper, the following definitions are 52 species that are listed as extinct or threatened used: within their jurisdiction (Appendix 2), that would also • Threatened includes ‘critically endangered’, qualify as threatened nationally, but are not yet ‘endangered’ and ‘vulnerable’ species (sensu included on the national threatened species list. An IUCN 2001). Note that ‘rare’ is not generally additional 54 species are listed under the category of included in the definition of ‘threatened’. ‘rare’ within the relevant jurisdiction (Appendix 3), • Conservation Concern includes all ‘extinct’, that would also have this status nationally, but are not ‘threatened’, ‘rare’, ‘insufficiently known’ or ‘data on the national threatened species list. There are deficient’ species (sensu Backhouse & Cameron seven species of orchids included on the national 2005). EPBC Act threatened species lists that are not includ- • Listing is used to describe the formal process of ed in the relevant state/territory threatened species list adding a species to a threatened species list (usual- (Appendix 4). An additional two threatened orchids ly called a Schedule) in biodiversity conservation on the national list, Dendrobium brachypus (Endl.) legislation (Act). H.G. Reichb. and Phreatia paleata H.G. Reichb., occur on Australia’s island territories not under Results state/territory jurisdiction. NATIONAL ASSESSMENT – A total of 424 orchid species REGIONAL ASSESSMENTS – For South Australia, the are listed as extinct, threatened or rare in Australia assessment by Bates (2006) indicated 146 orchids of (Appendix 1, summarised in Table 2). This total ‘Conservation Concern’, compared with 104 listed includes 195 species (about 12% of the Australian under state legislation (Table 3). For Victoria, the two orchid flora) listed as extinct or threatened nationally, assessments indicated a total of 240 (Backhouse & plus an additional 238 species (about 14% of the Cameron 2005) and 257 orchids (DSE 2005) of LANKESTERIANA 7(1-2), marzo 2007. © Universidad de Costa Rica, 2007 RD 30 3 IOCC PROCEEDINGS TABLE 3. Assessments of the numbers of orchids of ‘con- TABLE 4. Assessments of the numbers of orchids of ‘con- servation concern’ in South Australia. servation concern’ in Victoria. Category NPWA Bates (2006) extinct 0 14 endangered 45 51 vulnerable 31 20 threatened 76 71 rare 28 48 data deficient 0 13 Total conservation concern 104 146 NPWA = National Parks & Wildlife Act 1972, South Australia. ‘Conservation Concern’, compared with just 75 orchids listed under state legislation (Table 4). Discussion Shaded boxes indicate where the conservation status category is not used in the assessment system The national EPBC Act includes 195 orchid species FFGA = Flora and Fauna Guarantee Act 1988, Victoria. B&C 2005 = Backhouse & Cameron 2005. listed as extinct or threatened nationally (Table 2), which is about 12% of the Australian orchid flora. actual number of threatened orchids. In South The state and territory regional threatened species Australia, the number listed under the NPW Act may lists include another 52 species that are listed as be an underestimate of the actual number of extinct, extinct or threatened within their jurisdiction, that threatened or rare orchids by at least 42 species, would also qualify as threatened nationally, but are based on Bates (2006) (Table 3). There is good evi- not yet included on the national threatened species dence to suggest that at least 14 (and perhaps as many list. If these species are added, the total national as 20) orchid species have become extinct in that extinct/threatened orchid count is 15% of the nation’s state (Bates 2006), yet no orchid is currently listed as orchids. An additional 54 species are listed under the extinct under the NPW Act. In Victoria, there appears
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