Photographer: Liz Blair BRIGALOW INTRODUCTION All part of a Community Ecological communities are groups of plants, animals and other organisms that naturally occur together. The structure and composition are determined by environmental factors such as climate, landscape position, soil, aspect and altitude. While a particular ecological community will vary in structure and composition across its range, there are common elements that clearly identify one ecological community as distinct from another. Ecological communities also exist in different condition ‘states’, each with defining characteristics. States range from high quality to degraded with several in between. Management affects the state of a community and depending on the type of management action, can cause a community to make a ‘transition’ to a better or worse state. Brigalow Brigalow is the name given to the threatened ecological community Brigalow (Acacia harpophylla dominant and co-dominant). This community occurs on clay soils and is characterised by an overstorey dominated by Brigalow or with Brigalow as a co-dominant with other species such as Belah (Casuarina cristata) or Bimble box (Eucalyptus populnea). Unfortunately, large areas of this community have been cleared across our catchment and remaining fragments are listed as endangered. Several threatened flora and fauna species use Brigalow as habitat. Brigalow is listed as a threatened ecological community under both the Australian Government’s Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act) and the NSW Threatened Species Conservation Act 1995 (TSC Act). Activities which affect the condition or extent of Brigalow may require consent or approval. Where does the community occur? Although remnants of Brigalow can be found across north-west New South Wales, the largest patches are distributed south and west of Narrabri and north-east of Moree. Most of the remaining stands of Brigalow are in south-east Qld. Specifically, Brigalow occurs on the north-west slopes and plains in the Brigalow Belt South Bioregion, with outliers in the Darling Riverine Plains and Nandewar bioregions. Managing and enhancing biodiversity on your land helps build a resilient landscape that balances production and conservation Description Identification Brigalow structure ranges from open woodland to forest, with a canopy dominated by, or including, Brigalow trees (Acacia harpophylla). The height of Brigalow will vary from 9 to 25 metres depending on mean annual rainfall. Brigalow usually has an understorey with a high diversity of shrub species and a sparse ground layer. In lower rainfall areas, with more widely spaced trees there will be a denser ground layer of grasses, chenopods and herbs. Mistletoe (particularly Amyema quandang) is a common and important component of Brigalow communities. Species commonly occurring as a co-dominant with Brigalow include: Eucalyptus populnea (Bimble box), E. pilligaensis (Pilliga box) and Casuarina cristata (Belah). Brigalow is associated with gilgaied, heavy cracking clay or clay-loam soils. Brigalow trees will vigorously resprout from root suckers if the above-ground parts are removed or damaged. The community can include dense stands of regrowth with a developing canopy. Where it is mainly found Brigalow is found on public and private land, usually on deep alluvial, gilgaied clay soils. The community is usually found on plains, alluvial floodplains or low rises. What is not Brigalow? For Brigalow patches to fit the definition of the community protected under the EPBC Act, they must be larger than 0.5 ha and have less than 50% exotic perennial groundcover. Not all vegetation communities with Acacia harpophylla are the Brigalow ecological community. This species also occurs in Semi-evergreen Vine Thicket and Weeping Myall Woodland, which are both threatened ecological communities. Photographer: David Carr Profile drawing of Brigalow community Plants of Brigalow 1 2 DOMINANT CANOPY SPECIES GROUNDCOVER SPECIES Acacia harpophyllaBrigalow Casuarina cristataBelah Eucalyptus populnea subsp. bimbil Bimble box Acacia cambageiGidgee Aristida leptopoda White speargrass Austrostipa aristiglumis Plains grass Boerhavia dominiiTarvine Dichanthium sericeum Queensland blue grass Enteropogon acicularis Twirly windmill grass Marsilea spp.Nardoo Salsola kali Soft rolypoly Sclerolaena diacantha Tangled copperburr Sclerolaena tricuspis Giant redburr Solanum parvifolium Small-leaf solanum Vittadinia cuneataFuzzweed Austrodanthonia bipartita Wallaby grass Austrostipa scabra subsp. scabra Speargrass Chloris truncata Windmill grass Einadia nutans Creeping saltbush Jasminum lineare Desert jasmine Paspalidium caespitosum Brigalow grass Sclerolaena birchii Galvanised burr Sclerolaena muricata Black rolypoly Solanum esurialeQuena Sporobolus caroli Fairy grass Zygophyllum glaucum Pale twinleaf MISTLETOES Amyema cambagei Needle-leaf mistletoe Amyema linophyllaMistletoe Amyema quandang Grey mistletoe Dendropthoe glabrescens Orange mistletoe ASSOCIATED CANOPY SPECIES Acacia pendulaMyall Alectryon oleifolius subsp. canescens Western rosewood, Bonaree Eucalyptus pilligaensis Pilliga box Eucalyptus largiflorens Black box MID-STOREY SPECIES Acacia excelsaIronwood Apophyllum anomalum Warrior bush Capparis lasianthaNepine Carissa ovata Currant bush Ehretia membranifolia Peach bush Eremophila desertiTurkeybush Enchylaena tomentosa Ruby saltbush Geijera parvifloraWilga Notelaea microcarpa Native olive Pittosporum angustifoliumButterbush Santalum lanceolatum Sandalwood Acacia stenophylla River cooba Atalaya hemiglaucaWhitewood Capparis mitchellii Wild orange Citrus glauca Wild lime, Desert lime Elaeodendron australe Red olive plum Eremophila mitchelliiBudda Flindersia maculosaLeopardwood Myoporum montanum Western boobialla Owenia acidula Colane, Gruie, Emu apple Rhagodia spinescens Thorny saltbush Vachellia farnesiana Mimosa bush 4 Photo Key: 1 Grey mistletoe – Leah Mackinnon 2 Belah – Greg Steenbeeke 3 Brigalow (tree) – Greg Steenbeeke 4 Western rosewood – David Carr 5 Brigalow (flowers) – Greg Steenbeeke 5 3 Animals of Brigalow BIRDS Parrots Rainbow lorikeet Scaly-breasted lorikeet Swift parrot Musk lorikeet Little lorikeet Australian king-parrot Red-winged parrot Eastern ringneck p Superb parrot ● Eastern rosella Pale-headed rosella Red-rumped parrot Turquoise parrot Blue bonnet Budgerigar Cockatoos Sulphur-crested cockatoo Little corella Glossy black-cockatoo Red-tailed black-cockatoo Cockatiel Galah Ground feeding and low nesting birds Emu Bush stone-curlew Australian bustard Painted button-quail p Brown quail Stubble quail King quail Button-quail p Red-chested button-quail p Spotted quail-thrush p Tawny grassbird p Little grassbird Rufous songlark Ground feeding birds Crested pigeon Common bronzewing p Diamond dove p Peaceful dove Bar-shouldered dove White-browed babbler p Grey-crowned babbler White-winged chough Apostlebird Southern whiteface Superb blue-wren Splendid wren Variegated wren Red-browed finch Diamond firetail Double-barred finch Aerial feeding birds Little woodswallow p Dusky woodswallow p Masked woodswallow p White-browed woodswallow p White-breasted woodswallow p Welcome swallow Fairy martin Tree martin p Fork-tailed swift ¢ White-throated needletail ¢ White-backed swallow Restless flycatcher Leaden flycatcher p Grey fantail Willie wagtail Dollarbird Rainbow bee-eater ¢ Medium to large bush birds Fan-tailed cuckoo Brush cuckoo Pallid cuckoo Shining bronze-cuckoo Black-eared cuckoo p Horsfield’s bronze-cuckoo Channel-billed cuckoo Common koel Laughing kookaburra Sacred kingfisher Red-backed kingfisher p Ground cuckoo-shrike Black-faced cuckoo-shrike White-bellied cuckoo-shrike p Grey shrike-thrush Crested bellbird White-winged triller p Cicadabird Red-capped robin p Hooded robin Eastern yellow robin p Jacky winter Eastern shrike-tit p Golden whistler p Rufous whistler White throated treecreeper Brown treecreeper Eastern spinebill p Spiny-cheeked honeyeater Red wattlebird Blue-faced honeyeater Yellow-throated miner Noisy miner White-naped honeyeater Brown-headed honeyeater p Black chinned honeyeater Yellow-faced honeyeater Singing honeyeater White-plumed honeyeater Fuscous honeyeater Painted honeyeater Black honeyeater Brown honeyeater Striped honeyeater p Olive-backed oriole p Magpie-lark Pied butcherbird Grey butcherbird Pied currawong Australian magpie Torresian crow 2 MAMMALS Little crow p Little raven p Australian raven Small bush birds White-browed scrubwren p Speckled warbler Western gerygone White-throated gerygone Striated thornbill Yellow thornbill Weebill Buff-rumped thornbill Yellow-rumped thornbill Chestnut-rumped thornbill p Inland thornbill Varied sittella Silvereye Mistletoebird Spotted pardalote Striated pardalote Birds of Prey 1 3 Collared sparrowhawk Brown goshawk p Spotted harrier Black kite Square-tailed kite Whistling kite Little eagle Wedge-tailed eagle Black-shouldered kite Black falcon p Brown falcon Nankeen kestrel Australian hobby Peregrine falcon Nocturnal birds Barn owl Southern boobook Barking owl Spotted nightjar p Australian owlet-nightjar Tawny frogmouth Introduced Feral pigeon Spotted turtle-dovep 4 Terrestrial (land dwelling) Yellow-footed antechinus p Common dunnart p Water-rat (streams) Narrow-nosed planigale Fat-tailed dunnart Eastern grey kangaroo Common wallaroo Red-necked wallaby Black-striped wallaby Swamp wallaby Spotted-tailed quoll Short beaked echidna Arboreal (tree dwelling) Koala Feathertail glider p Sugar glider p Squirrel glider Common brushtail possum p 5 Bats Microbats Gould’s wattled bat Chocolate wattled bat Little pied bat Lesser long-eared bat Gould’s long-eared bat Greater long-eared bat Inland broad-nosed bat Little broad-nosed bat Little forest bat Hairy-nosed freetail bat Southern freetail bat Inland freetail bat White-striped freetail-bat Yellow-bellied sheathtail-bat 6 7 Megabats Little red flying fox Grey headed flying fox Introduced European cattle Goat Dingo Domestic dog Fox Deer Horse Cat Brown hare Rabbit House mouse Black rat Pig PHOTO KEY: 1. Glossy black cockato – Phil Spark 2. Red tailed black cockatoo – Iestyn Taylor 3. Diamond firetail – Iestyn Taylor KEY: 4. Bush stone curlew – Phil Spark Species, population or community listed as vulnerable or endangered under the EPBC and/or TSC Act ¢ Species listed as migratory under the EPBC Act 6. Common dunnart – Phil Spark p Species identified as present or returning to vegetation communities in good condition 7. Squirrel glider – Phil Spark 5. Yellow footed antechinus – Phil Spark REPTILES Dragons Skinks Jacky lashtail Nobbi lashtail Eastern two-line dragon p Burn’s dragon Eastern water dragon Eastern bearded dragon Long-tailed earless dragon p Turtles Eastern snake-necked turtle Broad shelled snake-necked turtle p (western streams and wetlands) Murray short-necked turtle (major streams) 8 Two-clawed worm-skink Five-clawed worm-skink Shiny-palmed shinning skink Cream-striped shinning skink Unspotted yellow-sided ctenotus Robust ctenotus Cunningham’s spiny tailed skink p Tree-crevice skink Broad-banded sand-swimmer South-eastern slider Wood mulch-slider Eastern robust slider Tree-base litter-skink Common dwarf skink South-eastern morethia skink Shingleback lizard Common bluetongue 9 Snakes Eastern small-blotched python p Murray-Darling carpet python p Green tree snake p Yellow-faced whip snake De Vis’s banded snake Red naped snake Grey snake p Pale-headed snake Mulga snake Spotted black snake Red-bellied black snake Eastern brown snake Eastern shovel nosed snake p Variable black-naped snake Curl snake Eastern bandy-bandy p Goannas Sand monitor Black-tailed monitor p AMPHIBIANS 11 Ephemeral dams, ponds & wetlands Frogs & froglets Short-footed frog p N Water-holding frog New Holland frog Rough frog Striped burrowing frog Green tree frog Eastern dwarf tree frog Broad-palmed frog Peron’s tree frog Desert tree frog Eastern sign-bearing froglet Common eastern froglet Sloane’s froglet Bullfrog Long thumbed frog Ornate burrowing frog Salmon striped frog Spotted marsh frog Northern banjo frog p N E Painted burrowing frog Blind snakes Prong-snouted blind snake Robust blind snake Blackish blind snake Proximus blind snake Brown-snouted blind snake p Geckos 10 Box-patterned gecko p Tessellated gecko p Eastern stone gecko Eastern spiny-tailed gecko p Dubious dtella Varied dtella Prickly gecko Robust velvet gecko Thick-tailed gecko p Legless lizards Patternless delma Excitable delma p Burton’s snake-lizard Lace monitor KEY: Toads & toadlets Holy cross toad p Wrinkled toadlet 12 PHOTO KEY: Species, population or community listed as vulnerable or endangered under the EPBC and/or TSC Act ¢ Species listed as migratory under the EPBC Act p Species identified as present or returning to vegetation communities in good condition 8 Burn’s dragon – Phil Spark 9 Green tree snake – Alex Dudley 10 Eastern bandy bandy – Phil Spark 11 Northern banjo frog – Alex Dudley 12 Holy cross toad – Alex Dudley Threats and Management Photographer: Greg Steenbeeke Threats Management Brigalow communities are threatened with extinction or continued decline from both historical and current sources. The area of Brigalow has declined by more than 90% since European settlement, primarily due to clearing for cropping. The main priority is to maintain or increase the extent and condition of the community. This can be achieved by the following actions. Clearing – illegal and legal clearing for fence lines and routine agricultural activities is a significant threat in NSW. It increases the fragmentation of Brigalow and the impact of other threats such as fire, grazing and weeds. Fire – fire can kill above-ground parts, leaving roots to sucker, with subsequent loss of habitat and delays in flowering and setting seed. Weeds – invasive pasture grasses such as buffel grass (Cenchrus ciliaris), green panic (Panicum maximus var megathyrsus) and Rhode’s grass (Chloris gayana) pose a significant threat to Brigalow by displacing understorey species, preventing regeneration of trees and shrubs, and increasing the frequency and intensity of fire. Mother-of-millions (Kalanchoe tubiflora) and other succulent weeds can also invade stands and compete with native plants. Animal damage – domestic, feral and native animals threaten Brigalow by grazing and trampling plants. Grazing eliminates many plant species and allows weeds to colonise more easily. Trampling and animal movement reduces the amount of leaf litter which is essential habitat for reptile and invertebrate species. Infrequent seed production – natural regeneration of Brigalow trees is rare. Rare seed set events need to be followed by high summer rainfall. Climate change – is likely to affect distribution and composition of Brigalow communities and increase the impact of other threats, particularly fire and weeds. • It is recommended that you do not clear Brigalow stands, even under permissible exemptions from the Native Vegetation Conservation Act. • Provide long-term protection for Brigalow through Management Agreements with Local Land Services or Conservation Agreements with the Office of Environment and Heritage or the Nature Conservation Trust. • Establish a weed-free buffer around existing stands to encourage regeneration of native species from the Brigalow community. • Control weeds within and near existing stands before they spread. Repeated treatments may be needed. • Re-establish Brigalow communities through revegetation on sites where it previously occurred. Revegetation should aim to reconnect fragmented stands of Brigalow or to expand the size of existing stands to more than 1 hectare. Seed can be collected when available and ripe (from November through to December), but must be used within 18 months. • Fence existing stands and exclude domestic livestock. Occasional light grazing may be used if natives are not flowering or seeding. • Identify and control feral animals, particularly pigs. • Note the extent of grazing by native animals and obtain permits for control if necessary. • Develop and implement a fire reduction plan. • If establishing exotic pastures, maintain a wide (500 metre) buffer of native pasture around Brigalow stands. • Retain all fallen timber and leaf litter within Brigalow stands as these are important habitat for some wildlife. • Retain mistletoe as these provide food sources for birds and mammals. ECOSYSTEM FUNCTION: HOW HEALTHY WOODLANDS WORK FOR YOU Healthy Brigalow provides a wide range of benefits that are called ‘ecosystem services’. These include: • financial benefits • capture of solar energy • soil formation and cycling • nutrient cycling • water capture, filtration and delivery to water bodies •pollination • pest management (such as reducing pest pressure on crops) • regional climate buffering • shade and shelter (such as for livestock) • breakdown and absorption of wastes • a sense of place •scenery FURTHER INFORMATION Look for “Brigalow” on the EPBC Species Profiles and Threats database (SPRAT) at www.environment.gov.au/biodiversity/threatened/index.html The listing for this community under the NSW Threatened Species Conservation Act can be found at www.environment.nsw.gov.au/determinations/BrigalowEndComListing.htm Contact the Local Land Services on the contact details below. Photographer: Greg Steenbeeke www.lls.nsw.gov.au 1300 795 299 8:30 am to 5:30pm Monday to Friday Photographer: Greg Steenbeeke
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