dc.contributor.author |
Yapi, Thozamile S
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dc.contributor.author |
O’Farrell, Patrick J
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dc.contributor.author |
Dziba, Luthando E
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dc.contributor.author |
Esler, KJ
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dc.date.accessioned |
2019-04-02T07:31:08Z |
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dc.date.available |
2019-04-02T07:31:08Z |
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dc.date.issued |
2018-03 |
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dc.identifier.citation |
Yapi, T.S. et al. 2018. Alien tree invasion into a South African montane grassland ecosystem: impact of Acacia species on rangeland condition and livestock carrying capacity. International Journal of Biodiversity Science, Ecosystem Services & Management, vol. 14(1): 105-116 |
en_US |
dc.identifier.issn |
2151-3732 |
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dc.identifier.issn |
2151-3740 |
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dc.identifier.uri |
DOI: 10.1080/21513732.2018.1450291
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dc.identifier.uri |
https://www.tandfonline.com/doi/full/10.1080/21513732.2018.1450291
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dc.identifier.uri |
http://hdl.handle.net/10204/10901
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dc.description |
© 2018 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
en_US |
dc.description.abstract |
The degree to which invasive Acacia species affect South Africa’s livestock production has received little attention. We investigated the ecological impacts of Acacia mearnsii invasion on forage quality and quantity and on soil resources, along A. mearnsii invasion gradients, on South African rangelands and the subsequent conditions following clearing. Grazing capacity was reduced by 72% in densely invaded sites, whereas clearing improved grazing capacity by 66% relative to densely invaded sites within 5 years. In densely invaded sites total grass species basal cover was reduced by up to 42%. As a result, A. mearnsii reduced grazing capacity, from 2 to 8 ha required to support one large stock unit (ha/LSU) in uninvaded and densely invaded sites, respectively. Soil moisture content was lower in densely invaded sites compared with lightly invaded and cleared sites. Plant litter increased from 1.3% to 4.2%, carbon content of the soil increased from 2.0% to 4.0% and nitrogen concentrations increased from 0.1% to 0.2% in response to invasion by A. mearnsii. Clearing resulted in improved grazing capacity within 5 years. These results also showed that, if left uncontrolled, wattle species can reduce livestock carrying capacity within montane grasslands in South Africa. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
Taylor & Francis |
en_US |
dc.relation.ispartofseries |
Worklist;22213 |
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dc.subject |
Acacia mearnsii |
en_US |
dc.subject |
Grazing |
en_US |
dc.subject |
Invasion |
en_US |
dc.subject |
Livestock |
en_US |
dc.subject |
Rangeland |
en_US |
dc.subject |
Soil resources |
en_US |
dc.title |
Alien tree invasion into a South African montane grassland ecosystem: impact of Acacia species on rangeland condition and livestock carrying capacity |
en_US |
dc.type |
Article |
en_US |
dc.identifier.apacitation |
Yapi, T. S., O’Farrell, Patrick J, Dziba, L. E., & Esler, K. (2018). Alien tree invasion into a South African montane grassland ecosystem: impact of Acacia species on rangeland condition and livestock carrying capacity. http://hdl.handle.net/10204/10901 |
en_ZA |
dc.identifier.chicagocitation |
Yapi, Thozamile S, O’Farrell, Patrick J, Luthando E Dziba, and KJ Esler "Alien tree invasion into a South African montane grassland ecosystem: impact of Acacia species on rangeland condition and livestock carrying capacity." (2018) http://hdl.handle.net/10204/10901 |
en_ZA |
dc.identifier.vancouvercitation |
Yapi TS, O’Farrell, Patrick J, Dziba LE, Esler K. Alien tree invasion into a South African montane grassland ecosystem: impact of Acacia species on rangeland condition and livestock carrying capacity. 2018; http://hdl.handle.net/10204/10901. |
en_ZA |
dc.identifier.ris |
TY - Article
AU - Yapi, Thozamile S
AU - O’Farrell, Patrick J
AU - Dziba, Luthando E
AU - Esler, KJ
AB - The degree to which invasive Acacia species affect South Africa’s livestock production has received little attention. We investigated the ecological impacts of Acacia mearnsii invasion on forage quality and quantity and on soil resources, along A. mearnsii invasion gradients, on South African rangelands and the subsequent conditions following clearing. Grazing capacity was reduced by 72% in densely invaded sites, whereas clearing improved grazing capacity by 66% relative to densely invaded sites within 5 years. In densely invaded sites total grass species basal cover was reduced by up to 42%. As a result, A. mearnsii reduced grazing capacity, from 2 to 8 ha required to support one large stock unit (ha/LSU) in uninvaded and densely invaded sites, respectively. Soil moisture content was lower in densely invaded sites compared with lightly invaded and cleared sites. Plant litter increased from 1.3% to 4.2%, carbon content of the soil increased from 2.0% to 4.0% and nitrogen concentrations increased from 0.1% to 0.2% in response to invasion by A. mearnsii. Clearing resulted in improved grazing capacity within 5 years. These results also showed that, if left uncontrolled, wattle species can reduce livestock carrying capacity within montane grasslands in South Africa.
DA - 2018-03
DB - ResearchSpace
DP - CSIR
KW - Acacia mearnsii
KW - Grazing
KW - Invasion
KW - Livestock
KW - Rangeland
KW - Soil resources
LK - https://researchspace.csir.co.za
PY - 2018
SM - 2151-3732
SM - 2151-3740
T1 - Alien tree invasion into a South African montane grassland ecosystem: impact of Acacia species on rangeland condition and livestock carrying capacity
TI - Alien tree invasion into a South African montane grassland ecosystem: impact of Acacia species on rangeland condition and livestock carrying capacity
UR - http://hdl.handle.net/10204/10901
ER -
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en_ZA |