Eucalypts of Northern Australia
Transcription
Eucalypts of Northern Australia
Eucalypts of Northern Australia: ecological & conservation values A Summary 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Recommendations Importance Communities and species Species richness Spatial groupings Range Threat ratings Threats Reservation status Study area and methods 1 2 Summarised from: Franklin DC & Preece ND. 2014. The Eucalypts of Northern Australia: An Assessment of the Conservation Status of Taxa and Communities. A report to Kimberley to Cape, March 2014. 1 Ecological Communications, 24 Broadway, Herberton Qld 4887, Australia 2 Biome5 Pty Ltd, PO Box 1200, Atherton, Qld 4883, Australia All photographs by Don Franklin except those on p10. Summary prepared by Clare Taylor, Kimberley to Cape Initiative www.kimberleytocape.net.au Kimberley to Cape Eucalypts of Northern Australia 1. Key recommendations A. Target conservation and management priorities We recommend focusing conservation efforts on the following priorities through improved management, covenanting and reservation: Eucalypt taxa and communities that are threatened by past, present and impending land-clearing Eucalypt taxa and communities whose rarity in itself poses a threat to their persistence, eg: o extremely restricted taxa, including those located in the central and north Kimberley and in the White Mountains area southwest of Charters Towers in Queensland o restricted taxa, including those located in the central and north Kimberley, the Top End centred on the Arnhem Plateau, and in and around the Einasleigh Uplands of north Queensland. • Eucalypt taxa and communities listed (or that should be listed) as Threatened. Eucalypt taxa and communities that are not well represented in the current conservation estate (crown and private reserves) regardless of past or impending threats ie: o the 11 species and three subspecies endemic to Northern Australia that are not represented in any conservation reserve, and the further 52 endemic species and 10 endemic subspecies that have reservation indices of less than 30% o the 12 of 84 eucalypt communities (Map Units) that are not represented in any conservation reserve, and the further 40 of these Map Units that that have reservation indices of less than 10% (and often less than 1%). o the very low level of reservation in inland (mostly pastoral) districts in all three jurisdictions, and of the species-rich Einasleigh Uplands in north Queensland. Comment: Our analysis shows that the reserve system in northern Australia is selective and often severely inadequate in its coverage. Conservation efforts could include protection via crown, Indigenous and private reserves, as well as voluntary covenanting or managing country for biodiversity and related outcomes. B. Improve listings of Threatened taxa and communities We recommend the preparation of submissions for listing relevant species, subspecies and communities under state, territory and Commonwealth legislation and in the IUCN Red List of threatened species, including those newly identified by this study as threatened. Comment: Up-to-date listing of threatened taxa and communities is a key element to the appraisal of threatening processes, including development proposals. However it appears from this analysis that not all jurisdictions have adequately evaluated threats and nominated taxa (this seems particularly the case for Queensland and the Commonwealth) and that eucalypt communities need better recognition as units to be assessed. Nevertheless, a substantial body of relevant information and skill lies with jurisdictional agencies such as state and territory herbaria and we recommend that relevant state and territory agencies assist in reviewing the data in more detail and/or making all pertinent information available for third party review. All relevant jurisdictions and the IUCN also accept nominations from the public. Figure 1. Left - Urn shaped fruits of Twin-leaved Bloodwood (Corymbia cadophora subsp. cadophora), Kimberley; Right - Whitebark (Eucalyptus apodophylla), Northern Territory. 2 Eucalypts of Northern Australia C. Minimise clearing and establish offsets for unavoidable clearing Land clearing (in the past, present and impending) is the single greatest threat to the eucalypts of northern Australia and we recommend it is avoided in areas identified as having high ecological value. In other areas, if clearing (eg for agricultural intensification) cannot be avoided then it should be linked to land use planning and offsets. We recommend adoption of policies and landuse planning processes where eucalypts and eucalypt communities proposed for clearing are strongly matched by taxon and community (and to the extent possible, geographically) by substantial and secure reservation. We also recommend pricing the carbon emissions involved in clearing and, in particular, providing incentives for landholders based on the costs of emissions, as tools with huge potential to reduce rates of land clearing and to ensure that clearing of agriculturally marginal country does not occur. D. Undertake further research A much better understanding of the ecology of eucalypts and eucalypt communities in northern Australia is required for their ongoing management and protection, and especially for land use planning where clearing for agricultural intensification is unavoidable. These research topics are fundamental to assessment and management of risks. We particularly recommend research into: 1. the reproductive ecology of eucalypts. Key issues include identification of supra-annual patterns and drivers of flowering and how these might be influenced by climate change, and identification of pollinators capable of providing this service at relevant spatial scales 2. the landscape ecology of those pollinators capable of responding to infrequent mass-flowering of eucalypts, most notably the Little Red Flying-fox (Pteropus scapulatus) and Varied Lorikeet (Psitteuteles versicolor). For example, what level of connectivity is necessary for full maintenance of the ecosystem services they provide, and are there thresholds of habitat fragmentation beyond which pollination declines; 3. aspects of the demography of eucalypts that remain poorly understood, including seedling establishment, the longevity of the seedling bank and of mature trees and how this varies with species, environments and disturbance across northern Australia; 4. the evolutionary relationships among species in order to better understand the historical factors which have shaped the current distribution of species; 5. potentially threatened taxa to determine their distribution and abundance (ie field surveys); 6. remote areas, particularly in the Kimberley and any others with a poor collection record (e.g. many inland areas), to locate new taxa and fill in our knowledge of the distribution of known taxa (ie field surveys); 7. more accurate (i.e. locally applicable) estimates of the emission of greenhouse gases resulting from land-clearing to properly cost the consequences of that clearing; 8. the consequences of climate change and shifts in fire regime for eucalypts; 9. impacts of invasive flora and fauna on eucalypts; 10.identification of Evolutionary Significant Units for the conservation of north Australian eucalypts with both general application and particular relevance to the ability of species to cope with and respond evolutionarily to climate change. ESUs may be identified on the basis of geographic isolation, genetic distinctness or locallyadaptive features. Figure 2. Savanna of Variable-barked Bloodwood (Corymbia dichromophloia) in foreground against sandstone outcrops, NT 3 Eucalypts of Northern Australia 2. Importance of the eucalypts of Northern Australia The vast sweep of eucalypt-dominated savanna across Northern Australia is one of the greatest natural areas of the world. It is by far the largest expanse of tropical savanna left in good condition; globally, 70% of the area of original savanna has been lost (Woinarski et al 2007). As well as having very high conservation value at a global level, the savannas of northern Australia are valuable at a national level. Their intact nature directly serves the tourism, recreation, fishing, seafood, pastoral, biosecurity and bioprospecting industries, and contributes to Indigenous health and livelihoods through provision of food, maintenance of country, spiritual wellbeing and employment in land management and other services. The savannas also indirectly serve numerous other industries by attracting workers to the north, providing lifestyle and health (physical and mental) opportunities, and through many other ecosystem services. Intact savannas host an amazing abundance and diversity of plants and animals, and are part of the identity of the North. In other parts of Australia over 80% of eucalypt woodlands have been cleared or heavily modified by intensive grazing or other disturbances (Figure 3). Figure 3: Residual, modified and replaced Eucalypt woodland (from Woinarski et al 2007) The eucalypt woodlands of Northern Australia differ from the remaining eucalypt woodlands in other parts of the country - in the north, rainfall is strongly summer-dominated and temperatures are high throughout the year, the understory is mostly grassy, and fires are frequent and of relatively low-intensity. The eucalypts themselves also differ notably in several ways: the genus Corymbia is relatively prominent, and species are mostly pollinated by birds and bats, have lower levels of volatile oils in the foliage, and perhaps also have larger seeds. Also some species are seasonally deciduous, and some have discolourous leaves (ie the leaf back and front are different colours) held horizontally. We know that the eucalypts of the Northern Australian savannas are diverse, variable in range, and have high levels of endemism. However there is much less known about the geography of species richness, endemicity, rarity and other characteristics. This, combined with the development pressures facing the North, means there is a clear need to investigate, assess and map their ecological and conservation values. Definition: The term “eucalypt” refers to members of three closely-related genera: Angophora, Eucalyptus and Corymbia. The distinctness of Angophora has long been recognised, these being the only eucalypts with obvious petals. In both Eucalyptus and Corymbia, the primordial petals fuse (along with the sepals in some species) to form a bud cap that is not obviously petaloid, the showy colour of flowers being provided by the stamens. Prior to 1995, all non-angophoroid eucalypts were placed in Eucalyptus, a situation that became untenable when independent genetic studies using different techniques demonstrated that bloodwoods and the ghost gum group (paper-fruited bloodwoods) were more closely related to Angophora than they were to other Eucalyptus species. This problem was resolved with the re-assignation of the several hundred species of bloodwoods and ghost gums to form the genus Corymbia). 4 Eucalypts of Northern Australia 3. Eucalypt communities and species across Northern Australia From a vegetation community perspective, 72 of 125 vegetation community ‘Map Units’ in Northern Australia are characterised as primarily dominated by eucalypts and a further 12 feature eucalypts as secondary dominants (Fox et al 2001). Combined, these units cover 69% of the tropical savanna portion of the Northern Australian study area. Figure 4. Distribution of vegetation community types or ‘Map Units’ that feature eucalypts from Fox et al (2001). Dark green = dominated by eucalypts; light green = featuring eucalypts secondarily; Grey = vegetation types not featuring eucalypts as primary or key secondary species. Based on Fox et al, 2001. From a species perspective the eucalypt flora of northern Australia comprises 188 species and 38 subspecies (includes one variety). Of these, 105 species and 22 subspecies are strictly endemic to the study area and a further 24 species and 3 subspecies nearly so. Seven species are shared with New Guinea or the Islands of Wallacea to Australia’s north. All three eucalypt genera are present in the study area, with Eucalyptus being the most rich in species across the North and most predominant in eastern Queensland (Fig 5a). Corymbia dominates the northern Top End of the Northern Territory (Fig 5b), and Angophora occurs only marginally in the study area (Fig 5c). Figure 5. Proportional species richness of eucalypt genera in degree cells in northern Australia. Only cells with more than 10 recorded northern Australian species have been included. Cells that include land outside the study area may have additional species not included the analysis. 5 Eucalypts of Northern Australia 4. Species richness across Northern Australia Eucalyptus species richness is greatest in the central and northern Kimberley, the Top End and eastern Queensland, with a peak richness of 46 species in the one degree cell covering the Atherton Tableland and adjacent western slopes of north Queensland. Species richness is markedly lower in inland areas but interpretation of the magnitude of this effect is somewhat confounded by reduced collection effort. Figure 6. Stand of Pumpkin Gum (Eucalyptus pachycalyx subsp. pachycalyx). Figure 7. Richness of eucalypts in northern Australia: A. recorded; B. rarefacted. Cells with land area outside the study area have been excluded because they may contain additional species. Rarefacted richness is the mean richness of samples of 50 records and is thus constrained to those cells with 50 or more records. 6 Eucalypts of Northern Australia 5. Spatial groupings of eucalypts across Northern Australia Biogeographic analysis shows strong regional patterning with a shift in species composition between Queensland east of the Gulf of Carpentaria and areas to the west that is consistent with biogeographic patterns identified among plants and animals in general. We identified 12 regional groups of taxa (Fig 8) with many groups exhibiting high levels of regional endemicity, an analysis that adds substantially to previous biogeographic interpretations of northern Australia. Figure 9. Dendrogram of north Australian degree cells classified by the eucalypt species recorded within them. Figure 8. Dendrogram of north Australian eucalypt species based on their presence in degree cells and collapsed post-hoc into 12 biogeographic groups. One extra group (Mt Isa area) was identified from species left over from this analysis. An alternative perspective is provided by classifying degree cells by the species recorded within them (Fig 9 & 10) (note this classification is not simply an inversion of the previous analysis since all records from cells outside the study area and poorly represented cells have been excluded). Here the primary division is between Queensland [eastern + northern] and the area to the north-west including the Gulf lowlands of Queensland. Further subdivision into five sub-groups (1a to 2b) is strongly supported statistically. Figure 10. Degree cells classified according to the eucalypt species present in them. Groups and sub-groups are derived from the classification in Fig. above i.e: 1 = north-west Australia; 2 = eastern and northern Queensland. 1a = SW Kimberley; 1b = Kimberley & Top End; 1c = semi-arid zone; 2a = central [eastern] Queensland; 2b = Cape York Peninsula & Wet Tropics. 7 Eucalypts of Northern Australia 6. Eucalypt species with restricted ranges Sixteen species and seven subspecies are rated as extremely restricted (priority 1), while 125 species and 21 subspecies were rated as not at all restricted (priority 5). The greatest concentrations of extremely restricted taxa are in the central and north Kimberley and in the White Mountains area south-west of Charters Towers in Queensland. Restricted taxa (i.e. priorities 1-4) are common in the central and north Kimberley, the Top End centred on the Arnhem Plateau, and in and around the Einasleigh Uplands of north Queensland. Figure 11. Richness of restricted range north Australian eucalypt taxa in degree cells in four cumulative ranked priorities. Priority 1 cells contain extremely restricted taxa Priority 2 cells contain extremely restricted and very restricted taxa Priority 3 cells contain extremely restricted, very restricted and restricted taxa Priority 4 cells contain extremely restricted, very restricted, restricted and somewhat restricted taxa. Please see Table 1 (p13) for information on Priority 1 species. 8 Eucalypts of Northern Australia 7. Threat ratings of Northern Australian eucalypts Applying IUCN criteria, we assessed 19 north Australian eucalypt taxa as Threatened (three as Endangered, 16 as Vulnerable (Table 2 p15)), and an additional nine as Near Threatened and two as Data Deficient. Seventeen of these assessments were based solely on decline due to clearing (criterion A2b), four were rated on the basis of a combination of rarity and decline due to clearing (criteria B1a,b(ii,v) and B2a,b(ii,v)), and nine taxa were rated on the basis of extreme rarity alone (criteria D1 and/or D2). Taxa we rated as Threatened are strongly concentrated in eastern Queensland. These ratings differ markedly from official listings of Threatened taxa, with the latter seriously under-representing the level of threat but also rating a number of taxa as Threatened which clearly are not. Nine north Australian eucalypt taxa are currently listed as Threatened under State and Commonwealth legislation. Figure 12. Number of north Australian eucalypt taxa in degree cells: A. listed as threatened; B. listed as of concern; C. rated by us as threatened; and D. rated by us as Near Threatened or Data Deficient. 9 Eucalypts of Northern Australia 8. Threats to eucalypts in Northern Australia The major threat to the persistence of eucalypts in northern Australia is land clearing. Climate change may pose a substantial threat to some populations in the future. Local reduction in populations may occur because of frequent intense fires driven by invasive Gamba Grass and because of rainforest expansion. Land-clearing is strongly concentrated in the south-east of the study area and also along the Queensland coast north to the Wet Tropics. Targeted assessment of taxa demonstrated indices of clearing of >30% – sufficient to qualify as threatened under IUCN criteria independent of rarity – for eight taxa. A further nine taxa have indices of between 20 and 30%, sufficient to qualify as Near Threatened under IUCN criteria. Five eucalypt Map Units (communities) have been more than 50% cleared and a further three have been 30–50% cleared. Map Units subjected to extensive clearing have not been adequately reserved by way of compensation. Figure 13. Threats to the persistence of eucalypts across Northern Australia such as broad scale land clearing and changed fire regimes (Gamba grass photos: S Setterfield) (photoes 10 Eucalypts of Northern Australia 9. Reservation status of eucalypt species and communities Conservation reserves in Northern Australia are concentrated in the higher rainfall regions of the north-west, and along sections of the Queensland coast especially on Cape York Peninsula and in the Wet Tropics. There is considerable complementarity between crown and private reserves in their coverage of taxa and communities. Eleven species and three subspecies endemic to the study area do not occur in either a crown or private nature reserve, and a further 28 endemic species and ten endemic subspecies have reservation indices of less than 10% (Table 3, p15). 52 have indices <30%. Twelve of 84 eucalypt community Map Units are not represented in any crown or private conservation reserve, while a further 40 of these community Map Units are poorly represented with less than 10% of their area (and often less than 1%) in conservation reserves. Figure 14. a) Conservation estate of Northern Australia and extent of land clearing; b) reservation status of eucalypt community Map Units ; c) land clearing status of eucalypt community Map Units 11 Eucalypts of Northern Australia 10. Study area and methods In this study northern Australia is defined as the tropical savanna region plus the embedded Wet Tropics and Central Queensland Coast bioregions. The investigation used almost 52,000 records from Australia’s Virtual Herbarium, shapefiles of vegetation community Map Units from The Vegetation of the Australian Tropical Savannas (Fox et al, 2001) and the National Vegetation Information System, shapefiles of land clearing and of crown and private conservation reserves, the literature and a miscellany of other sources. Records from Australia’s Virtual Herbarium were vetted heavily to remove errors. The taxonomic standard employed is that of the Australian Plant Census of 2011. Restrictedness categories are based on Red List criteria relating to Extent of Occurrence and extrapolation to Area of Occurrence and the number of records. Clearing and reservation indices were developed using the location of herbarium records. The threat status of species and subspecies was assessed for their entire range and in strict conformity with Red List criteria from the International Union for the Conservation of Nature. For more information on any aspects of this summary please see the full report: Franklin DC & Preece ND. 2014. The Eucalypts of Northern Australia: An Assessment of the Conservation Status of Taxa and Communities. A report to the Kimberley to Cape Initiative, March 2014. Acknowledgements: The Eucalypts of Northern Australia project was kindly funded by the Bjarne K Dahl Trust as part of ‘Kimberley to Cape’, an initiative committed to safeguarding the natural and cultural values of Northern Australia through sustainable development and conservation. The report authors thank Jess Abrahams, Stuart Blanch, Peter Bostock, Barry Conn Ian Cowie, Darren Crayn, Gay Crowley, Nick Dosremedios, Kym Dungey, and Rod Fensham, Stephen Garnett, David Gillieson, Paul Gioia, Niels Klazenga, Rob Law, David Martin, Andree Slee, Frank Udovicic and Alison Vaughan. Clare Taylor (Kimberley to Cape) takes responsibility for any errors or omissions from the main text. Figure 15. Study area A. yellow-shading with major towns; B. showing the 21 savanna bioregions (various shades of grey) and two rainforest IBRA bioregions (green). Map based on the Interim Biogeographic Regionalisation for Australia. 12 Eucalypts of Northern Australia Table 1: Eucalypt species and subspecies of northern Australia rated as “extremely restricted” in this study (ie priority 1 in Fig 11) “Degree cells” are cells of 1° of latitude and longitude and are notated by the whole numbers of latitude and longitude. Thus, for example, “12/130” means the degree cell centred at 12.5° South by 130.5° East (this cell contains the city of Darwin). Common name Scientific name Degree cells Brief description of location Yellow Bloodwood Corymbia aureola 21/148, 22/147, 22/148, 23/148 sub-coastal central Queensland Twin-leaved Bloodwood Corymbia cadophora subsp. pliantha central and west Kimberley, WA 15/126, 16/126, 16/127 Corymbia cadophora subsp. polychroma 16/128 east Kimberley, WA Corymbia clavigera 13/126, 14/124, 14/125, coast and islands of north-west Kimberley, WA 14/126, 15/125 Cable Beach Ghost Gum Corymbia paractia coast near Broome, WA 17/122, 18/122 Corymbia sp. Pentland Hills Pentland Hills, SW of Charters Towers, Qld 20/145 Corymbia sp. Springsure near Springsure, Qld 24/148 Corymbia torta subsp. allanii north-west Kimberley, WA 14/125, 14/126 Corymbia torta subsp. mixtifolia north Kimberley, WA 14/126, 14/127 Corymbia torta subsp. torta 15/125, 16/125, 16/126, 17/127 central Kimberley, WA Seppelt Range Yellowjacket Eucalyptus ceracea Seppelt Range, north Kimberley, WA 14/127 Kimberley Box Eucalyptus costuligera between El Questro & Gibb River, Kimberley, WA 15/127, 16/126, 16/127 Lolworth Range Ironbark Eucalyptus farinosa north of Pentland, Qld 20/145 Broad-leaved Box Eucalyptus fitzgeraldii 14/126, 15/124, 16/125, 16/126 central & north-west Kimberley, WA Kakadu Woollybutt Eucalyptus gigantangion Kakadu National Park & vicinity, NT 12/132, 12/133, 13/132 Gregory Gum Eucalyptus gregoriensis Gregory National Park, NT 16/130 Kenneally’s White Gum Eucalyptus kenneallyi coastal north-west Kimberley, WA 15/124, 16/123 Koolpin Box Eucalyptus koolpinensis southern Kakadu National Park & vicinity, NT 13/132, 13/133 Northern Peppermint Eucalyptus lockyeri subsp. lockyeri western Atherton Tableland, Qld 17/145 Mt Isa Mallee Eucalyptus nudicaulis vicinity of Mt Isa, Qld 20/139, 20/140 Broad-leaved Box Eucalyptus oligantha subsp. modica central to north-east Kimberley, WA 14/127, 15/127, 16/126 Springsure Ironbark Eucalyptus sicilifolia near Springsure, Qld 23/148, 24/148 Eucalyptus sp. Mt Hope Homestead 19/145, 19/146, 20/145, sub-coastal central Queensland 20/146, 21/146 13 Eucalypts of Northern Australia Table 2: Eucalypt species and subspecies of northern Australia assessed by us as threatened (Endangered or Vulnerable). Common name Dawson River Blackbutt Black Ironbox Springsure Ironbark Dallachy’s Ghost Gum Red Bloodwood Paluma Range Yellowjacket Cable Beach Ghost Gum Cadaghi Queensland Peppermint Lolworth Range Ironbark Kenneally’s White Gum Koolpin Box Mt Isa Mallee Mt Stuart Ironbark Poplar Gum Narrow-leaved White Mahogany Scientific name Eucalyptus cambageana Eucalyptus raveretiana Eucalyptus sicilifolia Corymbia cadophora subsp. polychroma Corymbia dallachiana Corymbia erythrophloia Corymbia leptoloma Corymbia paractia Corymbia sp. Pentland Hills Corymbia sp. Springsure Corymbia torelliana Eucalyptus exserta Eucalyptus farinosa Eucalyptus kenneallyi Eucalyptus koolpinensis Eucalyptus nudicaulis Eucalyptus paedoglauca Eucalyptus platyphylla Eucalyptus tenuipes Assessed status Endangered Endangered Endangered Vulnerable Vulnerable Vulnerable Vulnerable Vulnerable Vulnerable Vulnerable Vulnerable Vulnerable Vulnerable Vulnerable Vulnerable Vulnerable Vulnerable Vulnerable Vulnerable Basis for assessment Extensive land clearing Extensive land clearing Rarity, clearing, and threat of clearing Extreme rarity Extensive land clearing Extensive land clearing Extreme rarity Rarity and threat of clearing Extreme rarity Extreme rarity Extensive land clearing Extensive land clearing Extreme rarity Extreme rarity Extreme rarity Rarity and threat of clearing Rarity and threat of clearing Extensive land clearing Extensive land clearing IUCN Criterion A2b A2b B1a,b(ii,v)B2a,b(ii,v) D1, D2 A2b A2b D2 B1ab(ii,v) D2 D2 A2b A2b D2 D2 D2 B1a,b(ii,v) B1a,b(ii,v) A2b A2b 14 Eucalypts of Northern Australia Table 3: Poorly-reserved (<10%) eucalypt species and subspecies endemic to northern Australia. Reservation percentages are an index: the % of unique herbarium records that are from reserves. Crown reserves include national parks and other crown-run land committed primarily to conservation. Private reserves are Indigenous Protected Areas and properties managed by the Australian Wildlife Conservancy and Bush Heritage Australia. Common name Scientific name Reservation % Common name Scientific name Reservation % crown private total crown private total Corymbia cadophora subsp. pliantha 0.0 0.0 0.0 Queensland Woollybutt Eucalyptus chartaboma 2.7 0.0 2.7 Corymbia cadophora subsp. polychroma Corymbia clandestina 0.0 0.0 0.0 Reid River Box Eucalyptus brownii 3.0 0.0 3.0 0.0 0.0 0.0 Rustyjacket Corymbia peltata 3.2 0.0 3.2 Corymbia ligans 0.0 0.0 0.0 Queensland Yellowjacket Eucalyptus similis 3.5 0.0 3.5 Cable Beach Ghost Gum - Corymbia paractia 0.0 0.0 0.0 Gilbert River Box Eucalyptus microneura 3.7 0.0 3.7 Corymbia sp. Pentland Hills 0.0 0.0 0.0 Broad-leaved Box 3.8 0.0 3.8 - Corymbia sp. Springsure 0.0 0.0 0.0 Pindan Ghost Gum Eucalyptus oligantha subsp. oligantha Corymbia dendromerinx 0.0 4.1 4.1 - Corymbia torta subsp. mixtifolia 0.0 0.0 0.0 Glen Geddes Bloodwood Corymbia xanthope 5.4 0.0 5.4 Lolworth Range Eucalyptus farinosa Ironbark Kenneally’s White Gum Eucalyptus kenneallyi 0.0 0.0 0.0 Red Bloodwood Corymbia ellipsoidea 5.7 0.0 5.7 0.0 0.0 0.0 Newcastle Range Box Eucalyptus provecta 5.9 0.0 5.9 Mt Isa Mallee Eucalyptus nudicaulis 0.0 0.0 0.0 Eucalyptus ceracea 0.0 6.1 6.1 Kununurra Gum Eucalyptus ordiana 0.0 0.0 0.0 Seppelt Range Yellowjacket Redthroated Bloodwood Corymbia rhodops 6.3 0.0 6.3 Mt Stuart Ironbark Eucalyptus paedoglauca 0.0 0.0 0.0 Knotted Box Eucalyptus persistens 6.6 0.9 7.5 - Eucalyptus sp. Mt Hope Homestead 0.0 0.0 0.0 Rusty Bloodwood Corymbia umbonata 7.5 0.0 7.5 White’s Ironbark Eucalyptus whitei 0.6 0.0 0.6 Yellow Bloodwood Corymbia aureola 8.3 0.0 8.3 Georgetown Bloodwood Pumpkin Gum Corymbia pocillum 2.0 0.0 2.0 Lemon-scented Ironbark Eucalyptus staigeriana 8.5 0.0 8.5 1.1 1.1 2.1 Northern Peppermint 0.0 8.8 0.0 2.2 2.2 Cabbage Gum 5.8 3.3 9.1 Cloncurry Box Eucalyptus leucophylla 2.6 0.0 2.6 Chillagoe Ghost Gum Eucalyptus lockyeri subsp. lockyeri Corymbia grandifolia subsp. grandifolia Corymbia x chillagoensis 8.8 Blotchy Bloodwood Eucalyptus pachycalyx subsp. pachycalyx Corymbia stockeri subsp. stockeri 0.0 9.4 9.4 Twin-leaved Bloodwood Drummond Range Bloodwood Greenvale Bloodwood 15