Improving ground cover and landscape function in a semi-arid rangeland through alternative grazing management

Title
Improving ground cover and landscape function in a semi-arid rangeland through alternative grazing management
Publication Date
2018-12-01
Author(s)
McDonald, Sarah E
Reid, Nick
( author )
OrcID: https://orcid.org/0000-0002-4377-9734
Email: nrei3@une.edu.au
UNE Id une-id:nrei3
Waters, Cathleen M
Smith, Rhiannon
( author )
OrcID: https://orcid.org/0000-0002-6375-5684
Email: rsmith66@une.edu.au
UNE Id une-id:rsmith66
Hunter, John
( author )
OrcID: https://orcid.org/0000-0001-5112-0465
Email: jhunte20@une.edu.au
UNE Id une-id:jhunte20
Type of document
Journal Article
Language
en
Entity Type
Publication
Publisher
Elsevier BV
Place of publication
Netherlands
DOI
10.1016/j.agee.2018.08.021
UNE publication id
une:1959.11/52101
Abstract

The development and adoption of sustainable grazing strategies is important to improve the functionality and productivity of agricultural landscapes. Alternative grazing systems incorporating periods of planned rest may achieve this compared to continuous grazing systems, but the evidence is conflicting. Using paired paddock contrasts, soil characteristics, ground cover and landscape function (i.e. soil stability, nutrient cycling, infiltration and landscape organisation indices) were compared between alternative grazing management (incorporating periods of rest), traditional (continuous) grazing, and areas managed for conservation (ungrazed by commercial livestock but grazed by native and feral herbivores) on contrasting soil types in semi-arid rangelands. Relationships between the response variables and understorey floristic biodiversity measures were also explored. Total ground cover was greater under conservation management than grazing, and was greater under alternative grazing than traditional grazing management. Indices of landscape function, including stability, nutrient cycling, patch area and landscape organisation were significantly greater, and interpatch length significantly shorter, under conservation compared to traditional grazing management. Alternative grazing management had intermediate values of landscape function which did not differ significantly to traditional grazing or conservation treatments. Ground cover and floristic biodiversity measures were often positively correlated, but there was no clear relationship between most landscape function and plant biodiversity indices. Landscape function may be important in detecting changes in rangelands that remain undetected by floristic diversity measures. Alternative grazing strategies incorporating planned rest have the potential to improve ground cover with the associated benefits of improved productivity and landscape function compared to continuous grazing regimes.

Link
Citation
Agriculture, Ecosystems & Environment, v.268, p. 8-14
ISSN
1873-2305
0167-8809
Start page
8
End page
14

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