Increased grazing and dominance of an exotic pasture (Bothriochloa pertusa) affects vertebrate fauna species composition, abundance and habitat in savanna woodland
Alex S. Kutt A C and Alaric Fisher B
+ Author Affiliations
- Author Affiliations
A CSIRO Ecosystem Sciences, ATSIP, PMB PO, Aitkenvale, Qld 4814, Australia.
B Biodiversity Conservation Division, Department of Natural Resources, Environment, the Arts and Sport, PO Box 496, Palmerston, NT 0831, Australia.
C Corresponding author. Email: alex.kutt@csiro.au
The Rangeland Journal 33(1) 49-58 https://doi.org/10.1071/RJ10065
Submitted: 23 October 2010 Accepted: 28 January 2011 Published: 23 March 2011
Abstract
The invasion of exotic pasture species into intact woodlands has the potential to affect native fauna by altering habitat structure and ecosystem function. The spread of these weeds is generally in concert with cattle grazing, so that fauna or habitat change is due to multiple interrelated causes.
In this study we investigated whether the spread of the introduced pasture grass Bothriochloa pertusa and replacement of the native bluegrass B. ewartiana in eucalypt woodlands of northern Queensland has had an effect on terrestrial vertebrate fauna. We located 40 sites that sampled a range of native and introduced pastures cover, and investigated the spatial pattern of abundance with canonical analysis of principle coordinates, and correlation of the habitat attributes on the ordination space. We then selected a subset of four habitat attributes (eliminating highly colinear variables) and modelled species response to each using an information-theoretic approach. Thirty-one species (26 birds, one mammal and four reptiles) and two summary variables (bird abundance and richness) had best subset Akaike Information Criteria models with reliable parameters estimates.
Seventeen models contained the B. pertusa frequency term and a further 16 had a term relating to upper storey cover (tree cover >10, 5–10 or 3–5 m). Though pasture grass cover, grazing and habitat features were correlated and thus we cannot ascribe B. pertusa as the sole determinant of fauna species change, this study has demonstrated that tropical savanna woodlands with changing Bothriochloa dominance from native to introduced species have different fauna species composition. In particular bird species richness, ground nesting species (e.g. rufous songlark Cincloramphus mathewsi, golden-headed cisticola Cisticola exilis) and terrestrial reptiles (e.g. Carlia munda and Ctenotus taeniolatus) declined. Disturbance-tolerant species such as Australian magpie Cracticus tibicen and yellow-throated miners Manorina flavigula increased in abundance in exotic pasture-dominated sites. As pastoral intensification continues in northern Australian rangelands there is a potential for significant change in the relative abundance and composition of vertebrate fauna and the reduction or loss of some species in the landscape.
Additional keywords: biodiversity, conservation, information-theoretic models, rangelands, tropics, weed.
References
Akaike, H. (1973). Information theory and an extension of the maximum likelihood principle. In: ‘Second International Symposium on Information Theory’. Tsahkadsor, Armenia, USSR, 2–8 September 1971. (Eds B. N. Petroc and F. Csaki.) pp. 267–281. (Akademia Kiado: Budapest.)Burnham, K. P., and Anderson, D. R. (2002). ‘Model Selection and Multimodel Inference: A Practical Information-Theoretic Approach.’ (Springer-Verlag: New York.)
Butler, D. W., and Fairfax, R. J. (2003). Buffel Grass and fire in a gidgee and brigalow woodland: a case study from central Queensland. Ecological Management & Restoration 4, 120–125.
| Buffel Grass and fire in a gidgee and brigalow woodland: a case study from central Queensland.Crossref | GoogleScholarGoogle Scholar |
Chevan, A., and Sutherland, M. (1991). Hierarchical partitioning. The American Statistician 45, 90–96.
| Hierarchical partitioning.Crossref | GoogleScholarGoogle Scholar |
Chilcott, C. R., McCallum, B. S., Quirk, M. F., and Paton, C. J. (2003). ‘Grazing Land Management Education Package Workshop Notes – Burdekin.’ (Meat and Livestock Australia Limited: Sydney.)
Clarke, K. R., and Gorley, R. N. (2006). ‘PRIMER 6 User Manual/Tutorial.’ (PRIMER-E Ltd: Plymouth.)
Cook, G. D., and Dias, L. (2006). TURNER REVIEW No. 12. It was no accident: deliberate plant introductions by Australian government agencies during the 20th century. Australian Journal of Botany 54, 601–625.
| TURNER REVIEW No. 12. It was no accident: deliberate plant introductions by Australian government agencies during the 20th century.Crossref | GoogleScholarGoogle Scholar |
Department of Environment and Resource Management (2009). Land cover change in Queensland 2007–08: a Statewide Landcover and Trees Study (SLATS) Report. Department of Environment and Resource Management, Brisbane.
Eyre, T. J., Maron, M., Mathieson, M. T., and Haseler, M. (2009a). Impacts of grazing, selective logging and hyper-aggressors on diurnal bird fauna in intact forest landscapes of the Brigalow Belt, Queensland. Austral Ecology 34, 705–716.
| Impacts of grazing, selective logging and hyper-aggressors on diurnal bird fauna in intact forest landscapes of the Brigalow Belt, Queensland.Crossref | GoogleScholarGoogle Scholar |
Eyre, T. J., Wang, J., Venz, M. F., Chilcott, C., and Whish, G. (2009b). Buffel grass in Queensland’s semi-arid woodlands: response to local and landscape scale variables, and relationship with grass, forb and reptile species. The Rangeland Journal 31, 293–305.
| Buffel grass in Queensland’s semi-arid woodlands: response to local and landscape scale variables, and relationship with grass, forb and reptile species.Crossref | GoogleScholarGoogle Scholar |
Franks, A. J. (2002). The ecological consequences of Buffel Grass Cenchrus ciliaris establishment within remnant vegetation of Queensland. Pacific Conservation Biology 8, 99–107.
Freidel, M., Puckey, H., O’Malley, C., Waycott, M., Smyth, A. K., and Miller, G. (2006). ‘Buffel Grass: Both Friend and Foe.’ (Desert Knowledge CRC: Alice Springs.)
Garnett, S. T., Woinarski, J. C. Z., Crowley, G. M., and Kutt, A. S. (2010). Biodiversity conservation in Australian tropical rangelands. In: ‘Wild Rangelands: Conserving Wildlife While Maintaining Livestock in Semi-Arid Ecosystems’. (Eds J. D. Toit, R. Kock and J. Deutsch.) pp. 191–234. (Blackwell Scientific: London.)
Graham, M. H. (2003). Confronting multicollinearity in ecological multiple regression. Ecology 84, 2809–2815.
| Confronting multicollinearity in ecological multiple regression.Crossref | GoogleScholarGoogle Scholar |
Grice, A. C. (2006). The impacts of invasive plant species on the biodiversity of Australian rangelands. The Rangeland Journal 28, 27–35.
| The impacts of invasive plant species on the biodiversity of Australian rangelands.Crossref | GoogleScholarGoogle Scholar |
Hannah, D., Woinarski, J. C. Z., Catterall, C. P., McCosker, J. C., Thurgate, N. Y., and Fensham, R. J. (2007). Impacts of clearing, fragmentation and disturbance on the bird fauna of Eucalypt savanna woodlands in central Queensland, Australia. Austral Ecology 32, 261–276.
| Impacts of clearing, fragmentation and disturbance on the bird fauna of Eucalypt savanna woodlands in central Queensland, Australia.Crossref | GoogleScholarGoogle Scholar |
Jackson, J. (2005). Is there a relationship between herbaceous species richness and buffel grass (Cenchrus ciliaris)? Austral Ecology 30, 505–517.
| Is there a relationship between herbaceous species richness and buffel grass (Cenchrus ciliaris)?Crossref | GoogleScholarGoogle Scholar |
James, C. D., Landsberg, J., and Morton, S. R. (1999). Provision of watering points in the Australian arid zone: a review of effects on biota. Journal of Arid Environments 41, 87–121.
| Provision of watering points in the Australian arid zone: a review of effects on biota.Crossref | GoogleScholarGoogle Scholar |
Jones, R. J. (1997). Steer gains, pasture yield and pasture composition on native pasture and on native pasture oversown with Indian couch (Bothriochloa pertusa) at three stocking rates. Australian Journal of Experimental Agriculture 37, 755–765.
| Steer gains, pasture yield and pasture composition on native pasture and on native pasture oversown with Indian couch (Bothriochloa pertusa) at three stocking rates.Crossref | GoogleScholarGoogle Scholar |
Kutt, A. S., and Fisher, A. (2010). Ant assemblages change with increasing dominance of an exotic pasture grass in a tropical savanna woodland. Ecological Management & Restoration 11, 67–69.
| Ant assemblages change with increasing dominance of an exotic pasture grass in a tropical savanna woodland.Crossref | GoogleScholarGoogle Scholar |
Kutt, A. S., and Martin, T. G. (2010). Bird foraging height predicts bird species response to woody vegetation change. Biodiversity and Conservation 19, 2247–2262.
| Bird foraging height predicts bird species response to woody vegetation change.Crossref | GoogleScholarGoogle Scholar |
Kutt, A. S., and Woinarski, J. C. Z. (2007). The effects of grazing and fire on vegetation and the vertebrate assemblage in a tropical savanna woodland in north-eastern Australia. Journal of Tropical Ecology 23, 95–106.
| The effects of grazing and fire on vegetation and the vertebrate assemblage in a tropical savanna woodland in north-eastern Australia.Crossref | GoogleScholarGoogle Scholar |
Legendre, P., and Legendre, L. (1998). ‘Numerical Ecology.’ 2nd edn. (Elsevier: New York.)
Lehmann, C. E. R., Prior, L. D., and Bowman, D. (2009). Decadal dynamics of tree cover in an Australian tropical savanna. Austral Ecology 34, 601–612.
| Decadal dynamics of tree cover in an Australian tropical savanna.Crossref | GoogleScholarGoogle Scholar |
Lindenmayer, D. B., and Fischer, J. (2007). Tackling the habitat fragmentation panchreston. Trends in Ecology & Evolution 22, 127–132.
| Tackling the habitat fragmentation panchreston.Crossref | GoogleScholarGoogle Scholar |
Lindenmayer, D., Hobbs, R. J., Montague-Drake, R., Alexandra, J., Bennett, A., Burgman, M., Cale, P., Calhoun, A., Cramer, V., Cullen, P., Driscoll, D., Fahrig, L., Fischer, J., Franklin, J., Haila, Y., Hunter, M., Gibbons, P., Lake, S., Luck, G., MacGregor, C., McIntyre, S., Mac Nally, R., Manning, A., Miller, J., Mooney, H., Noss, R., Possingham, H., Saunders, D., Schmiegelow, F., Scott, M., Simberloff, D., Sisk, T., Tabor, G., Walker, B., Wiens, J., Woinarski, J., and Zavaleta, E. (2008). A checklist for ecological management of landscapes for conservation. Ecology Letters 11, 78–91.
| 17927771PubMed |
Lovell, S., Hamer, M., Slotow, R., and Herbert, D. (2007). Assessment of congruency across invertebrate taxa and taxonomic levels to identify potential surrogates. Biological Conservation 139, 113–125.
| Assessment of congruency across invertebrate taxa and taxonomic levels to identify potential surrogates.Crossref | GoogleScholarGoogle Scholar |
MacNally, R. (1996). Hierarchical partitioning as an interpretative tool in multivariate inference. Australian Journal of Ecology 21, 224–228.
| Hierarchical partitioning as an interpretative tool in multivariate inference.Crossref | GoogleScholarGoogle Scholar |
Martin, T. G., Campbell, S., and Grounds, S. (2006). Weeds of Australian rangelands. The Rangeland Journal 28, 3–26.
| Weeds of Australian rangelands.Crossref | GoogleScholarGoogle Scholar |
Martin, T. G., and McIntye, S. (2007). Impacts of livestock grazing and tree clearing on birds of woodland and riparian habitats. Conservation Biology 21, 504–514.
| Impacts of livestock grazing and tree clearing on birds of woodland and riparian habitats.Crossref | GoogleScholarGoogle Scholar | 17391200PubMed |
McIntyre, S., McIvor, J. G., and MacLeod, N. D. (2000). Principles for sustainable grazing in eucalyptus woodlands: landscape-scale indicators and the search for thresholds. In: ‘Management for Sustainable Ecosystems’. (Eds P. Hale, A. Petrie, D. Moloney and P. Sattler.) pp. 92–100. (Centre for Conservation Biology, University of Queensland: Brisbane.)
McIvor, J. G. (1998). Pasture management in semi-arid tropical woodlands: effects on species diversity. Australian Journal of Ecology 23, 349–364.
| Pasture management in semi-arid tropical woodlands: effects on species diversity.Crossref | GoogleScholarGoogle Scholar |
McIvor, J. G. (2004). Pasture management in semi-arid tropical woodlands: levels of germinable seeds in soil and faeces of cattle grazing Stylosanthes pastures. Tropical Grasslands 38, 129–139.
McIvor, J. G. (2007). Pasture management in semi-arid tropical woodlands: dynamics of perennial grasses. The Rangeland Journal 29, 87–100.
| Pasture management in semi-arid tropical woodlands: dynamics of perennial grasses.Crossref | GoogleScholarGoogle Scholar |
McIvor, J. G., and Gardener, C. J. (1994). Germinable soil seed banks in native pastures in North-eastern Australia. Australian Journal of Experimental Agriculture 34, 1113–1119.
| Germinable soil seed banks in native pastures in North-eastern Australia.Crossref | GoogleScholarGoogle Scholar |
Mueller-Dombois, D., and Ellenberg, H. (1974). ‘Aims and Methods of Vegetation Ecology.’ (John Wiley and Sons: New York.)
Neldner, V. J., Wilson, B. A., Thompson, E. J., and Dillewaard, H. A. (2005). ‘Methodology for Survey and Mapping of Regional Ecosystems and Vegetation Communities in Queensland. Version 3.1.’ (Queensland Herbarium, Environmental Protection Agency: Brisbane.)
Olea, P. P., Mateo-Tomás, P., and de Frutos, A. (2010). Estimating and modelling bias of the Hierarchical Partitioning Public-Domain Software: implications in environmental management and conservation. PLoS ONE 5, e11698.
| Estimating and modelling bias of the Hierarchical Partitioning Public-Domain Software: implications in environmental management and conservation.Crossref | GoogleScholarGoogle Scholar | 20657734PubMed |
Ostoja, S. M., and Schupp, E. W. (2009). Conversion of sagebrush shrublands to exotic annual grasslands negatively impacts small mammal communities. Diversity & Distributions 15, 863–870.
| Conversion of sagebrush shrublands to exotic annual grasslands negatively impacts small mammal communities.Crossref | GoogleScholarGoogle Scholar |
Price, B., Kutt, A. S., and McAlpine, C. A. (2010). The importance of fine-scale savanna heterogeneity for reptiles and small mammals. Biological Conservation 143, 2504–2513.
| The importance of fine-scale savanna heterogeneity for reptiles and small mammals.Crossref | GoogleScholarGoogle Scholar |
Price, B., McAlpine, C. A., Kutt, A. S., Phinn, S. R., Pullar, D. V., and Ludwig, J. A. (2009). Continuum or discrete patch landscape models for savanna birds? Towards a pluralistic approach. Ecography 32, 745–756.
| Continuum or discrete patch landscape models for savanna birds? Towards a pluralistic approach.Crossref | GoogleScholarGoogle Scholar |
R v2.9.0 (2010). The R Project for Statistical Computing. Available at: http://www.r-project.org/ (accessed 1 July 2010).
Rogers, L. G., Cannon, M. G., and Barry, E. V. (1999). ‘Land Resources of the Dalrymple Shire. Vols 1 and 2 (and Appendices).’ (Department of Natural Resources, Queensland: Brisbane.)
Rosenberg, M. S., and Anderson, C. D. (2011). PASSaGE: Pattern Analysis, Spatial Statistics, and Geographic Exegesis. Version 2. Methods in Ecology and Evolution 2, .
Rosenstock, S. S., Anderson, D. R., Giesen, K. M., Leukering, T., and Carter, M. F. (2002). Landbird counting techniques: current practices and an alternative. The Auk 119, 46–53.
| Landbird counting techniques: current practices and an alternative.Crossref | GoogleScholarGoogle Scholar |
Rossiter-Rachor, N. A., Setterfield, S. A., Douglas, M. M., Hutley, L. B., Cook, G. D., and Schmidt, S. (2009). Invasive Andropogon gayanus (Gamba grass) is an ecosystem transformer of nitrogen relations in Australian savanna. Ecological Applications 19, 1546–1560.
| Invasive Andropogon gayanus (Gamba grass) is an ecosystem transformer of nitrogen relations in Australian savanna.Crossref | GoogleScholarGoogle Scholar | 1:STN:280:DC%2BD1MnjvVSgsA%3D%3D&md5=6a1dd092a746709eddc8ed0211470b32CAS | 19769102PubMed |
Schmidt, C. D., Hickman, K. R., Channell, R., Harmoney, K., and Stark, W. (2008). Competitive abilities of native grasses and non-native (Bothriochloa spp.) grasses. Plant Ecology 197, 69–80.
| Competitive abilities of native grasses and non-native (Bothriochloa spp.) grasses.Crossref | GoogleScholarGoogle Scholar |
Scholes, R. J., and Archer, S. R. (1997). Tree-grass interactions in savannas. Annual Review of Ecology and Systematics 28, 517–544.
| Tree-grass interactions in savannas.Crossref | GoogleScholarGoogle Scholar |
Sinervo, B., Mendez-de-la-Cruz, F., Miles, D. B., Heulin, B., Bastiaans, E., Cruz, M. V. S., Lara-Resendiz, R., Martinez-Mendez, N., Calderon-Espinosa, M. L., Meza-Lazaro, R. N., Gadsden, H., Avila, L. J., Morando, M., De la Riva, I. J., Sepulveda, P. V., Rocha, C. F. D., Ibarguengoytia, N., Puntriano, C. A., Massot, M., Lepetz, V., Oksanen, T. A., Chapple, D. G., Bauer, A. M., Branch, W. R., Clobert, J., and Sites, J. W. (2010). Erosion of lizard diversity by climate change and altered thermal niches. Science 328, 894–899.
| Erosion of lizard diversity by climate change and altered thermal niches.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3cXlvVeltrY%3D&md5=0ecbf8eadd761eb8477733859e15676dCAS | 20466932PubMed |
Smyth, A., Friedel, M., and O’Malley, C. (2009). The influence of buffel grass (Cenchrus ciliaris) on biodiversity in an arid Australian landscape. The Rangeland Journal 31, 307–320.
| The influence of buffel grass (Cenchrus ciliaris) on biodiversity in an arid Australian landscape.Crossref | GoogleScholarGoogle Scholar |
Tassicker, A. L., Kutt, A. S., Vanderduys, E., and Mangru, S. (2006). The effects of vegetation structure on the birds in a tropical savanna woodland in north-eastern Australia. The Rangeland Journal 28, 139–152.
| The effects of vegetation structure on the birds in a tropical savanna woodland in north-eastern Australia.Crossref | GoogleScholarGoogle Scholar |
Truong, P. N., and McDowell, M. (1985). Indian bluegrass for soil conservation and land stabilization in Queensland. Journal of Soil Conservation of N.S.W. 41, 38–43.
Valentine, L. E., Roberts, B., and Schwarzkopf, L. (2007). Mechanisms driving avoidance of non-native plants by lizards. Journal of Applied Ecology 44, 228–237.
| Mechanisms driving avoidance of non-native plants by lizards.Crossref | GoogleScholarGoogle Scholar |
van Wilgen, B. W., de Wit, M. P., Anderson, H. J., Le Maitre, D. C., Kotze, I. M., Ndala, S., Brown, B., and Rapholo, M. B. (2004). Costs and benefits of biological control of invasive alien plants: case studies from South Africa. South African Journal of Science 100, 113–122.
Whelan, C. J. (2001). Foliage structure influences foraging of insectivorous forest birds: an experimental study. Ecology 82, 219–231.
| Foliage structure influences foraging of insectivorous forest birds: an experimental study.Crossref | GoogleScholarGoogle Scholar |
Wiens, J. A. (1989). ‘The Ecology of Bird Communities. Part 2. Processes and Variations.’ (Cambridge University Press: Cambridge.)
Williams, D. G., and Baruch, Z. (2000). African grass invasion in the Americas: ecosystem consequences and the role of ecophysiology. Biological Invasions 2, 123–140.
| African grass invasion in the Americas: ecosystem consequences and the role of ecophysiology.Crossref | GoogleScholarGoogle Scholar |
Woinarski, J. C. Z., and Tidemann, S. C. (1991). The bird fauna of deciduous woodland in the wet-dry tropics of northern Australia. Wildlife Research 18, 479–500.
| The bird fauna of deciduous woodland in the wet-dry tropics of northern Australia.Crossref | GoogleScholarGoogle Scholar |
Zak, D. R., Holmes, W. E., White, D. C., Peacock, A. D., and Tilman, D. (2003). Plant diversity, soil microbial communities, and ecosystem function: are there any links? Ecology 84, 2042–2050.
| Plant diversity, soil microbial communities, and ecosystem function: are there any links?Crossref | GoogleScholarGoogle Scholar |
