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ISSN: 2157-7625

Journal of Ecosystem & Ecography
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  • Research Article   
  • J Ecosys Ecograph 2018, Vol 8(2): 256
  • DOI: 10.4172/2157-7625.1000256

Invasive Woody Plants, Diminishing Ecosystems in Potentially Productive African Rangelands

Clifford Tafangenyasha1*, Stanley Musungwa1 and Blessing Kavu2
1Scientific Services, Zimparks, Causeway, Harare, Zimbabwe
2Department of Geography and Environmental Sciences, Geo-information and Earth Observation Centre, University of Zimbabwe, Mount Pleasant, Harare, Zimbabwe
*Corresponding Author : Clifford Tafangenyasha, Scientific Services, Zimparks, P.O Box CY 140, Causeway, Harare, Zimbabwe, Tel: 07767739071/0735607804, Email: [email protected]

Received Date: Jul 06, 2018 / Accepted Date: Jul 31, 2018 / Published Date: Aug 06, 2018


Lantana camara L. (Verbenaceae) has been known in literature to impact adversely on biodiversity, resulting in the decline or elimination of native species through competition, destruction, and the disruption of local ecosystems and ecosystem functions. Invasive alien species, introduced and/or spread outside their natural habitats, have affected native biodiversity in almost every ecosystem type. This research addresses capacity of L.camara to invade and displace sites inside protected areas which would otherwise have intact natural vegetation. This study aimed at assessing the distribution of the invasive Lantana camara L. hereafter L. camara and its influence on undegraded and degraded soils and herbaceous species diversity in the SWRA.

To assess the impacts of L. camara in SWRA 18 belt transects were randomly placed in the dominant woodland types occurring in the study area. The weed-free native vegetation and weed-infested sites with similar soils were examined in a vegetation condition assessment. The 18 belt transects were randomly located by pairing nine plots that were considered degraded and undegraded. A mosaic of patchy disturbance by elephant feeding habits occur in SWRA in which L. camara colonise. Random stratified sampling method was used in two categories; stream banks, and grazing lands. L. camara was heavily distributed in stream banks and grazing lands. Estimates of L. camara were derived by visual assessment of their relative cover in 20x20 m plots. The Braun Blanquet scales were adopted for scoring L. camara cover. Density (individuals/ha) was established by enumerating woody species in a plot. Density of woody species was significantly higher (P<0.05) on undegraded plots than degraded plots and Shannon- Weaver diversity indices (H’) was significantly higher (P<0.05) on undegraded plots than on degraded plots. The study formed part of a vegetation condition assessment of the SWRA.

Keywords: Invasive alien species; SWRA Ecosystems; Climate change

Citation: Tafangenyasha C, Musungwa S, Kavu B (2018) Invasive Woody Plants, Diminishing Ecosystems in Potentially Productive African Rangelands. J Ecosys Ecograph 8: 256. Doi: 10.4172/2157-7625.1000256

Copyright: © 2018 Tafangenyasha C, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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