The influences of climate, habitat and fire on the distribution of cockatoo grass (Alloteropsis semialata) (Poaceae) in the Wet Tropics of northern Australia
Brooke L. Bateman A C and Christopher N. Johnson A BA Centre for Tropical Biodiversity and Climate Change, School of Marine and Tropical Biology, James Cook University, Townsville, Qld 4811, Australia.
B Present address: School of Zoology, University of Tasmania, Private Bag 5, Hobart, Tas. 7001, Australia.
C Corresponding author. Email: brooke.bateman@gmail.com
Australian Journal of Botany 59(4) 315-323 https://doi.org/10.1071/BT10266
Submitted: 6 October 2010 Accepted: 19 April 2011 Published: 9 June 2011
Abstract
Cockatoo grass [Alloteropsis semialata (R.Br.) A. Hitchc.] is considered a keystone species in northern Australian ecosystems as it provides a food resource for many species, including several endangered vertebrates. This study examined both local and regional environmental factors influencing cockatoo grass distribution and abundance in the Wet Tropics of north Queensland, Australia. Local distribution and abundance were investigated in the sclerophyll ecotone between open woodland and tall open forest, because little is known about cockatoo grass distribution within this habitat; also, the endangered northern bettong (Bettongia tropica) is restricted to this habitat and depends on cockatoo grass for its survival. Regional-scale modelling of distribution was undertaken to examine the climatic tolerances of cockatoo grass in Queensland. Density of cockatoo grass was negatively related to litter cover, soil moisture, and the presence of two dominant grass species, Themeda triandra [Forssk.(R.Br.) Stapf] and Cleistochloa subjuncea (C.E.Hubb.). Soil nutrients (N, C, S, and C : N ratio) were positively related to density of cockatoo grass. A late dry season experimental burn demonstrated that cockatoo grass had high survival to fire, with increased density and flowering in response to fire. Regional-scale modelling using climate variables indicated that cockatoo grass is more suited to the drier end of the sclerophyll habitat range. Cockatoo grass in the woodland-forest ecotone in the Wet Tropics appears to be influenced by several environmental features associated with the ground layer. The species benefits from the reduction in litter cover and competing grass species that result from management actions such as prescribed burning. Understanding of the factors limiting this species, both at a local and regional scale, can be used to guide management of this ecotone habitat for both cockatoo grass and the survival of other species that depend on it.
References
Abell SE, Gadek PA, Pearce CA, Congdon BC (2006) Seasonal resource availability and use by an endangered tropical mycophagous marsupial. Biological Conservation 132, 533–540.| Seasonal resource availability and use by an endangered tropical mycophagous marsupial.Crossref | GoogleScholarGoogle Scholar |
Abell-Davis SE (2008) ‘Tropical hypogeous fungal sporocarp distribution in time and space: implications for an endangered specialist mycophagous marsupial, Bettongia tropica.’ (James Cook University: Cairns)
Austin MP (2007) Species distribution models and ecological theory: a critical assessment and some possible new approaches. Ecological Modelling 200, 1–19.
| Species distribution models and ecological theory: a critical assessment and some possible new approaches.Crossref | GoogleScholarGoogle Scholar |
Bostock PD, Holland AE (2007) (Ed.) ‘Census of Queensland flora 2007.’ (Queensland Herbarium and Environmental Protection Agency: Brisbane)
Burnham KP, Anderson DR (2002) ‘Model selection and multimodel inference: a practical information-theoretic approach.’ (Springer-Verlag: New York)
Chen CR, Condron LM, Davis MR, Sherlock RR (2001) Effects of land-use change from grassland to forest on soil sulfur and arylsulfatase activity in New Zealand. Australian Journal of Soil Research 39, 749–757.
| Effects of land-use change from grassland to forest on soil sulfur and arylsulfatase activity in New Zealand.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD3MXmtVKjsr4%3D&md5=55b00c313b24264c6218decef02b9a50CAS |
Cole BI, Lunt ID (2005) Restoring Kangaroo Grass (Themeda triandra) to grassland and woodland understoreys: a review of establishment requirements and restoration exercises in south-east Australia. Ecological Management & Restoration 6, 28–33.
| Restoring Kangaroo Grass (Themeda triandra) to grassland and woodland understoreys: a review of establishment requirements and restoration exercises in south-east Australia.Crossref | GoogleScholarGoogle Scholar |
Crowley GM (2008) Cockatoo grass Alloteropsis semialata as a keystone species in northern Australia. Northern Territory Naturalist 20, 58–63.
Crowley GM, Garnett ST (2001) Growth, seed production, and effect of defoliation in an early flowering perennial grass, Alloteropsis semialata (Poaceae), on Cape York Peninsula, Australia. Australian Journal of Botany 49, 735–743.
| Growth, seed production, and effect of defoliation in an early flowering perennial grass, Alloteropsis semialata (Poaceae), on Cape York Peninsula, Australia.Crossref | GoogleScholarGoogle Scholar |
Crowley GM, Garnett ST, Shephard S (2009) Impact of storm-burning on Melaleuca viridiflora invasion of grasslands and grassy woodlands on Cape York Peninsula, Australia. Austral Ecology 34, 196–209.
| Impact of storm-burning on Melaleuca viridiflora invasion of grasslands and grassy woodlands on Cape York Peninsula, Australia.Crossref | GoogleScholarGoogle Scholar |
Doerr SH, Shakesby RA, Blake WH, Chafer CJ, Humphreys GS, Wallbrink PJ (2006) Effects of differing wildfire severities on soil wettability and implications for hydrological response. Journal of Hydrology (Amsterdam) 319, 295–311.
| Effects of differing wildfire severities on soil wettability and implications for hydrological response.Crossref | GoogleScholarGoogle Scholar |
Dostine PL, Johnson GC, Franklin DC, Zhang Y, Hempel C (2001) Seasonal use of savanna landscapes by the Gouldian finch, Erythrura gouldiae, in the Yinberrie Hills area, Northern Territory. Wildlife Research 28, 445–458.
| Seasonal use of savanna landscapes by the Gouldian finch, Erythrura gouldiae, in the Yinberrie Hills area, Northern Territory.Crossref | GoogleScholarGoogle Scholar |
Elith J, Graham CH (2009) Do they? How do they? Why do they differ? On finding reasons for differing performances of species distribution models. Ecography 32, 66–77.
| Do they? How do they? Why do they differ? On finding reasons for differing performances of species distribution models.Crossref | GoogleScholarGoogle Scholar |
Elith J, Graham CH, Anderson RP, Dudík M, Ferrier S, Guisan A, Hijmans RJ, Huettmann F, Leathwick JR, Lehmann A, Li J, Lohmann LG, Loiselle BA, Manion G, Moritz C, Nakamura M, Nakazawa Y, Overton JMcCM, Townsend Peterson A, Phillips SJ, Richardson K, Scachetti-Pereira R, Schapire RE, Soberón J, Williams S, Wisz MS, Zimmermann NE (2006) Novel methods improve prediction of species’ distributions from occurrence data. Ecography 29, 129–151.
| Novel methods improve prediction of species’ distributions from occurrence data.Crossref | GoogleScholarGoogle Scholar |
Everson CS, Everson TM, Tainton NM (1988) Effects of intensity and height of shading on the tiller initiation of six grass species from the Highland sourveld of Natal. South African Journal of Botany 54, 315–318.
Graham MH (2003) Confronting multicollinearity in ecological multiple regression. Ecology 84, 2809–2815.
| Confronting multicollinearity in ecological multiple regression.Crossref | GoogleScholarGoogle Scholar |
Grime JP (1973) Competitive exclusion in herbaceous vegetation. Nature 242, 344–347.
| Competitive exclusion in herbaceous vegetation.Crossref | GoogleScholarGoogle Scholar |
Guisan A, Graham CH, Elith J, Huettmann F, Distri NS (2007) Sensitivity of predictive species distribution models to change in grain size. Diversity & Distributions 13, 332–340.
| Sensitivity of predictive species distribution models to change in grain size.Crossref | GoogleScholarGoogle Scholar |
Harrington GN, Sanderson KD (1994) Recent contraction of wet sclerophyll forest in the wet tropics of Queensland due to invasion by rainforest. Pacific Conservation Biology 1, 319–327.
Hernandez PA, Graham CH, Master LL, Albert DL (2006) The effect of sample size and species characteristics on performance of different species distribution modeling methods. Ecography 29, 773–785.
| The effect of sample size and species characteristics on performance of different species distribution modeling methods.Crossref | GoogleScholarGoogle Scholar |
Hijmans RJ, Graham CH (2006) The ability of climate envelope models to predict the effect of climate change on species distributions. Global Change Biology 12, 2272–2281.
| The ability of climate envelope models to predict the effect of climate change on species distributions.Crossref | GoogleScholarGoogle Scholar |
Ibrahim DG, Gilbert ME, Ripley BS, Osborne CP (2008) Seasonal differences in photosynthesis between the C3 and C4 subspecies of Alloteropsis semialata are offset by frost and drought. Plant, Cell & Environment 31, 1038–1050.
| Seasonal differences in photosynthesis between the C3 and C4 subspecies of Alloteropsis semialata are offset by frost and drought.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1cXovFCisrY%3D&md5=22929dbbbbaad18ea37c56d12f00dee7CAS | 18410490PubMed |
Jensen K, Gutekunst K (2003) Effects of litter on establishment of grassland plant species: the role of seed size and successional status. Basic and Applied Ecology 4, 579–587.
| Effects of litter on establishment of grassland plant species: the role of seed size and successional status.Crossref | GoogleScholarGoogle Scholar |
Johnson CN, McIlwee AP (1997) Ecology of the northern bettong, Bettongia tropica, a tropical mycophagist. Wildlife Research 24, 549–559.
| Ecology of the northern bettong, Bettongia tropica, a tropical mycophagist.Crossref | GoogleScholarGoogle Scholar |
Kellman M (1986) Fire sensitivity of Casuarina torulosa in North Queensland, Australia. Biotropica 18, 107–110.
| Fire sensitivity of Casuarina torulosa in North Queensland, Australia.Crossref | GoogleScholarGoogle Scholar |
Lunt ID (1998) Allocasuarina (Casuarinaceae) invasion of an unburnt coastal woodland at Ocean Grove, Victoria: structural changes 1971–1996. Australian Journal of Botany 46, 649–656.
| Allocasuarina (Casuarinaceae) invasion of an unburnt coastal woodland at Ocean Grove, Victoria: structural changes 1971–1996.Crossref | GoogleScholarGoogle Scholar |
Lunt ID (2003) A protocol for integrated management, monitoring, and enhancement of degraded Themeda triandra grasslands based on plantings of indicator species. Restoration Ecology 11, 223–230.
| A protocol for integrated management, monitoring, and enhancement of degraded Themeda triandra grasslands based on plantings of indicator species.Crossref | GoogleScholarGoogle Scholar |
Lunt ID, Morgan JW (2002) The role of fire regimes in temperate lowland grasslands of southeastern Australia. In ‘Flammable Australia: fire regimes and biodiversity of a continent’. (Eds RA Bradstock, JE Williams, MA Gill) pp. 177–196. (Cambridge University Press: Cambridge)
Mathams SG (2008) A reassessment of a northern bettong (Bettongia tropica) reintroduction site quantifying fine-scale habitat and critical food resources and the development of a methodology for future assessment of potential habitat. Honours Thesis, University of Queensland, Brisbane.
McIlwee A, Freeman A (1998) The discovery of Northern Bettongs (Bettongia tropica) at Paluma, North Queensland. Report to the Department of Environment, Townsville.
McMahon JP, Hutchinson MF, Nix HA, Ord KD (1995) ‘ANUCLIM User’s Guide. Version 1.’ (Australian National University: Canberra)
Morgan JW, Lunt ID (1999) Effects of time-since-fire on the tussock dynamics of a dominant grass (Themeda triandra) in a temperate Australian grassland. Biological Conservation 88, 379–386.
| Effects of time-since-fire on the tussock dynamics of a dominant grass (Themeda triandra) in a temperate Australian grassland.Crossref | GoogleScholarGoogle Scholar |
Parsons SA, Congdon RA (2008) Plant litter decomposition and nutrient cycling in north Queensland tropical rain-forest communities of differing successional status. Journal of Tropical Ecology 24, 317–327.
| Plant litter decomposition and nutrient cycling in north Queensland tropical rain-forest communities of differing successional status.Crossref | GoogleScholarGoogle Scholar |
Pearson RG, Raxworthy CJ, Nakamura M, Peterson AT (2007) Predicting species distributions from small numbers of occurrence records: a test case using cryptic geckos in Madagascar. Journal of Biogeography 34, 102–117.
| Predicting species distributions from small numbers of occurrence records: a test case using cryptic geckos in Madagascar.Crossref | GoogleScholarGoogle Scholar |
Phillips SJ, Dudik M (2008) Modeling of species distributions with Maxent: new extensions and a comprehensive evaluation. Ecography 31, 161–175.
| Modeling of species distributions with Maxent: new extensions and a comprehensive evaluation.Crossref | GoogleScholarGoogle Scholar |
Phillips SJ, Anderson RP, Schapire RE (2006) Maximum entropy modelling of species geographic distributions. Ecological Modelling 190, 231–259.
| Maximum entropy modelling of species geographic distributions.Crossref | GoogleScholarGoogle Scholar |
Prusty BAK, Chandra R, Azeez PA (2009) Distribution of carbon, nitrogen, phosphorus, and sulfur in the soil in a multiple habitat system in India. Australian Journal of Soil Research 47, 177–189.
| Distribution of carbon, nitrogen, phosphorus, and sulfur in the soil in a multiple habitat system in India.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1MXjvVajsrw%3D&md5=9cc26068d227029a3220c77cc00c384cCAS |
Ripley BS, Gilbert ME, Ibrahim DG, Osborne CP (2007) Drought constraints on C4 photosynthesis: stomatal and metabolic limitations in C3 and C4subspecies of Alloteropsis semialata. Journal of Experimental Botany 58, 1351–1363.
| Drought constraints on C4 photosynthesis: stomatal and metabolic limitations in C3 and C4subspecies of Alloteropsis semialata.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD2sXlvFGis78%3D&md5=c4f7b058debf376e07ffca04e2789de0CAS | 17322550PubMed |
Ripley BS, Abraham TI, Osborne CP (2008) Consequences of C4photosynthesis for the partitioning of growth: a test using C3 and C4 subspecies of Alloteropsis semialata under nitrogen-limitation. Journal of Experimental Botany 59, 1705–1714.
| Consequences of C4photosynthesis for the partitioning of growth: a test using C3 and C4 subspecies of Alloteropsis semialata under nitrogen-limitation.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1cXmtlelt7o%3D&md5=7d2cbe4d4211d558a0c78d76e09e91baCAS | 18263632PubMed |
Ripley B, Donald G, Osborne CP, Abraham T, Martin T (2010) Experimental investigation of fire ecology in the C3 and C4 subspecies of Alloteropsis semialata. Journal of Ecology 98, 1196–1203.
| Experimental investigation of fire ecology in the C3 and C4 subspecies of Alloteropsis semialata.Crossref | GoogleScholarGoogle Scholar |
Ritchie EG, Martin JK, Johnson CN, Fox BJ (2009) Separating the influences of environment and species interactions on patterns of distribution and abundance: competition between large herbivores. Journal of Animal Ecology 78, 724–731.
| Separating the influences of environment and species interactions on patterns of distribution and abundance: competition between large herbivores.Crossref | GoogleScholarGoogle Scholar | 19175695PubMed |
Russell-Smith J, Price O, Murphy B Managing the matrix: decadal responses of eucalypt-dominated mesic savanna to ambient fire regimes in three north Australian conservation reserves. Ecological Applications
Scott DF (2000) Soil wettability in forested catchments in South Africa; as measured by different methods and as affected by vegetation cover and soil characteristics. Journal of Hydrology (Amsterdam) 231–232, 87–104.
| Soil wettability in forested catchments in South Africa; as measured by different methods and as affected by vegetation cover and soil characteristics.Crossref | GoogleScholarGoogle Scholar |
Scott KA (2008) ‘Effect of fire regime on grass-layer plant dynamics in a tropical savanna.’ (Charles Darwin University: Darwin)
Scott KA, Setterfield SA, Andersen AN, Douglas MM (2009) Correlates of grass-species composition in a savanna woodland in northern Australia. Australian Journal of Botany 57, 10–17.
| Correlates of grass-species composition in a savanna woodland in northern Australia.Crossref | GoogleScholarGoogle Scholar |
Stanton P (2007) ‘The vegetation and ecosystems of the Mount Zero-Taravale Sanctuary.’ (Australian Wildlife Conservancy: Perth)
VanDerWal J, Shoo LP, Graham C, William SE (2009) Selecting pseudo-absence data for presence-only distribution modeling: how far should you stray from what you know? Ecological Modelling 220, 589–594.
| Selecting pseudo-absence data for presence-only distribution modeling: how far should you stray from what you know?Crossref | GoogleScholarGoogle Scholar |
Vernes K (2003) Fine-scale habitat preferences and habitat partitioning by three mycophagous mammals in tropical wet sclerophyll forest, north-eastern Australia. Austral Ecology 28, 471–479.
| Fine-scale habitat preferences and habitat partitioning by three mycophagous mammals in tropical wet sclerophyll forest, north-eastern Australia.Crossref | GoogleScholarGoogle Scholar |
Vernes KA (1999) ‘Fire, fungi and a tropical mycophagist: ecology of the northern bettong (Bettongia tropica) in fire-prone sclerophyll forest.’ (James Cook University: Townsville)
Walker BH, Langridge JL, McFarlane F (1997) Resilience of an Australian savanna grassland to selective and non-selective perturbations. Australian Journal of Ecology 22, 125–135.
| Resilience of an Australian savanna grassland to selective and non-selective perturbations.Crossref | GoogleScholarGoogle Scholar |
Wan S, Hui D, Luo Y (2001) Fire effects on nitrogen pools and dynamics in terrestrial ecosystems: a meta-analysis. Ecological Applications 11, 1349–1365.
| Fire effects on nitrogen pools and dynamics in terrestrial ecosystems: a meta-analysis.Crossref | GoogleScholarGoogle Scholar |
Williams PR, Congdon RA, Grice AC, Clarke PJ (2005) Effect of season of burning and removal of herbaceous cover on seedling emergence in a eucalypt savanna of north-eastern Australia. Austral Ecology 30, 491–496.
| Effect of season of burning and removal of herbaceous cover on seedling emergence in a eucalypt savanna of north-eastern Australia.Crossref | GoogleScholarGoogle Scholar |
Withers J (1978) Studies on the status of unburnt Eucalyptus woodland at Ocean Grove, Victoria. II. The differential seedling establishment of Eucalyptus ovata Labill. and Casuarina littoralis Salisb. Australian Journal of Botany 26, 465–483.
| Studies on the status of unburnt Eucalyptus woodland at Ocean Grove, Victoria. II. The differential seedling establishment of Eucalyptus ovata Labill. and Casuarina littoralis Salisb.Crossref | GoogleScholarGoogle Scholar |
Withers J, Ashton D (1977) Studies of the status of unburnt Eucalyptus woodland at Ocean Grove, Victoria. I. The structure and regeneration. Australian Journal of Botany 25, 623–637.
| Studies of the status of unburnt Eucalyptus woodland at Ocean Grove, Victoria. I. The structure and regeneration.Crossref | GoogleScholarGoogle Scholar |
Woinarski JCZ, Risler J, Kean L (2004) Response of vegetation and vertebrate fauna to 23 years of fire exclusion in a tropical Eucalyptus open forest, Northern Territory, Australia. Austral Ecology 29, 156–176.
| Response of vegetation and vertebrate fauna to 23 years of fire exclusion in a tropical Eucalyptus open forest, Northern Territory, Australia.Crossref | GoogleScholarGoogle Scholar |