Four years of sheep exclusion shows no changes in understorey composition in grazed woodlands of southern Queensland

Paper

Le Brocque, Andrew F. and Zammit, Charlie. 2010. "Four years of sheep exclusion shows no changes in understorey composition in grazed woodlands of southern Queensland." 2010 Conference of the Ecological Society of Australia (ESA 2010). Canberra, Australia 06 - 10 Dec 2010 Australia.
Paper/Presentation Title

Four years of sheep exclusion shows no changes in understorey composition in grazed woodlands of southern Queensland

Presentation TypePaper
AuthorsLe Brocque, Andrew F. (Author) and Zammit, Charlie (Author)
Journal or Proceedings TitleProceedings of the 2010 Ecological Society of Australia Annual Conference (ESA 2010)
Year2010
PublisherEcological Society of Australia
Place of PublicationAustralia
Web Address (URL) of Paperhttp://www.esa2010.org.au/Detailed%20program.pdf
Conference/Event2010 Conference of the Ecological Society of Australia (ESA 2010)
Event Details
2010 Conference of the Ecological Society of Australia (ESA 2010)
Delivery
In person
Event Date
06 to end of 10 Dec 2010
Event Location
Canberra, Australia
Abstract

Retaining trees in low-input, low-productivity grazing systems in southern Queensland can provide biodiversity benefits without adversely impacting upon production. Although previous research conducted during period of extended drought, may have failed to determine the overall biodiversity potential in relation to management practices. We describe a grazing exclusion trial designed to monitor biodiversity changes following the removal of grazing in the Traprock wool producing region of southern Queensland. Eighteen sites across 10 properties were sampled across two vegetation types (grassy box woodland and ironbark/gum woodland), three overstorey tree densities (<6 trees/ha; 6-20 trees/ha; >20 trees/ha), and three exclosure types (full exclosure; partial exclosure and control (open). Exclosures were established in 2005 and sampled over a four year period for understorey composition and above-ground biomass. No differences were apparent in composition between exclosure treatments (ANOSIM, p > 0.05), although patterns were observed in overstorey tree density treatments within vegetation types. There were no differences (p > 0.05) in biomass between exclosures, although significantly higher plant biomass was observed in low density treatments. Exclusion of grazing has not significantly altered composition after 4 years. However, above-ground biomass has responded to the removal of grazing in open paddock areas. A longer period of exclusion may be necessary to detect changes (if any) in plant species composition.

Keywordsgrazing exclusion; sheep; biodiversity changes; understorey vegetation; Queensland
ANZSRC Field of Research 2020410406. Natural resource management
410203. Ecosystem function
310302. Community ecology (excl. invasive species ecology)
410401. Conservation and biodiversity
410206. Landscape ecology
300202. Agricultural land management
Public Notes

Unrefereed paper, and is not available.

Byline AffiliationsDepartment of Biological and Physical Sciences
Department of Environment and Water Resources, Australia
Institution of OriginUniversity of Southern Queensland
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Case, Heidi, Dearnaley, John and Le Brocque, Andrew F.. 2008. "Lantana invades the soil too! Effects of Lantana camara on soil fungal dominance." 2008 Conference of the Ecological Society of Australia (ESA 2008). Sydney, Australia 01 - 05 Dec 2008 Australia. Ecological Society of Australia.
Change is the new stability: disturbance and riparian woodlands in a production landscape
Reardon-Smith, Kathryn, Le Brocque, Andrew F. and House, Alan. 2008. "Change is the new stability: disturbance and riparian woodlands in a production landscape." 2008 Conference of the Ecological Society of Australia (ESA 2008). Sydney, Australia 01 - 05 Dec 2008 Australia. Ecological Society of Australia.
Retaining trees in a grazing landscape: impacts on ground cover in sheep-grazing agro-ecosystems in southern Queensland
Le Brocque, Andrew F., Goodhew, Kellie A. and Cockfield, Geoff. 2008. "Retaining trees in a grazing landscape: impacts on ground cover in sheep-grazing agro-ecosystems in southern Queensland." Veg Futures 08: Australia's National Vegetation Conference 2008. Toowoomba, Australia 20 - 23 Oct 2008 Toowoomba, Qld, Australia.
Resilience of temporary wetlands in production landscapes and potential impacts of climate change
Kath, Jarrod, Le Brocque, Andrew F. and Miller, Craig. 2009. "Resilience of temporary wetlands in production landscapes and potential impacts of climate change." James, Craig D. (ed.) INTECOL 2010: Ecology in a Changing Climate: Two Hemispheres, One Globe. Brisbane, Australia 16 - 21 Aug 2009 Australia.
Bird assemblages in fragmented agricultural landscapes: the role of small brigalow remnants and adjacent land uses
Collard, Stuart, Le Brocque, Andrew and Zammit, Charlie. 2009. "Bird assemblages in fragmented agricultural landscapes: the role of small brigalow remnants and adjacent land uses." Biodiversity and Conservation. 18 (6), pp. 1649-1670. https://doi.org/10.1007/s10531-008-9548-4
Vegetation changes following the exclusion of grazing in the Traprock region
Le Brocque, Andrew F. and Cockfield, Geoff. 2008. Vegetation changes following the exclusion of grazing in the Traprock region. Toowoomba, Australia. University of Southern Queensland, Australian Centre for Sustainable Catchments / Traprock Wool Association Inc..
Technical report: vegetation changes following the short-term exclusion of grazing in the Traprock region
Goodhew, Kellie A. and Le Brocque, Andrew F.. 2006. Technical report: vegetation changes following the short-term exclusion of grazing in the Traprock region. Toowoomba, Australia. University of Southern Queensland.
Vegetation management, grazing and arthropod assemblages in the Traprock region: interim report
Attwood, Simon J., Le Brocque, Andrew F., Cockfield, Geoff and Schumacher, Roslyn. 2005. Vegetation management, grazing and arthropod assemblages in the Traprock region: interim report. Toowoomba, Australia. University of Southern Queensland.
Technical report: effect of vegetation management on woodland communities in the Traprock region
Le Brocque, Andrew F., Goodhew, Kellie A. and Cockfield, Geoff. 2005. Technical report: effect of vegetation management on woodland communities in the Traprock region. Toowoomba, Australia. University of Southern Queensland.
Endophytic fungi associated with Australian orchids
Dearnaley, John and Le Brocque, Andrew F.. 2006. "Endophytic fungi associated with Australian orchids." Australasian Plant Conservation: Bulletin of the Australian Network for Plant Conservation. 15 (2), pp. 7-9.
Trees in a grazing landscape: vegetation patterns in sheep-grazing agro-ecosystems in Southern Queensland
Le Brocque, Andrew F., Cockfield, Geoff and Goodhew, Kellie A.. 2006. "Trees in a grazing landscape: vegetation patterns in sheep-grazing agro-ecosystems in Southern Queensland." Timmins, Susan (ed.) 3rd Joint Conference of the New Zealand Ecological Society and the Ecological Society of Australia. Wellington, New Zealand 28 Aug - 01 Sep 2006 Wellington, New Zealand.
Arthropod assemblage response to agricultural land use intensification
Attwood, Simon J., Maron, Martine, House, Alan and Zammit, Charlie. 2006. "Arthropod assemblage response to agricultural land use intensification." Timmins, Susan (ed.) 3rd Joint Conference of the New Zealand Ecological Society and the Ecological Society of Australia. Wellington, New Zealand 28 Aug - 01 Sep 2006 Wellington, New Zealand.
Vegetation community responses to altered flow regimes and weed invasion in reparian woodlands of the upper condamine floodplain, Eastern Australia
Reardon-Smith, Kathryn, Le Brocque, Andrew F., House, Alan and Zammit, Charlie. 2005. "Vegetation community responses to altered flow regimes and weed invasion in reparian woodlands of the upper condamine floodplain, Eastern Australia." Miller, Craig (ed.) 2005 Conference of the Ecological Society of Australia (ESA 2005). Brisbane, Australia 28 Nov - 02 Dec 2005 Brisbane, Queensland, Australia. Ecological Society of Australia.
Vegetation management and woodland communities in the traprock sheep grazing region of Southern Queensland
Goodhew, Kellie A., Le Brocque, Andrew F. and Zammit, Charlie. 2005. "Vegetation management and woodland communities in the traprock sheep grazing region of Southern Queensland." Miller, Craig (ed.) 2005 Conference of the Ecological Society of Australia (ESA 2005). Brisbane, Australia 28 Nov - 02 Dec 2005 Brisbane, Queensland.
Ecosystem functioning across vegetation - production boundaries in brigalow (Acacia Harpophylla) in Southern Queensland
Collard, Stuart, Zammit, Charlie and Le Brocque, Andrew F.. 2005. "Ecosystem functioning across vegetation - production boundaries in brigalow (Acacia Harpophylla) in Southern Queensland." Miller, Craig (ed.) 2005 Conference of the Ecological Society of Australia (ESA 2005). Brisbane, Australia 28 Nov - 02 Dec 2005 Brisbane, Queensland.
A quantitative literature analysis of global invertebrate responses to agricultural intensification
Attwood, Simon J., Maron, Martine, Zammit, Charlie and House, Alan. 2005. "A quantitative literature analysis of global invertebrate responses to agricultural intensification." Miller, Craig (ed.) 2005 Conference of the Ecological Society of Australia (ESA 2005). Brisbane, Australia 28 Nov - 02 Dec 2005 Brisbane, Queensland.