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Seasonal abundance and diversity of insects on Sclercarya birrea and Berhemia discolor in Tshikundamalema, Limpopo Province, South Africa

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dc.contributor.advisor Kunjeku, E. C.
dc.contributor.advisor Garnas, J.
dc.contributor.author Ramavhale, Rollet Phindulo
dc.date 2018
dc.date.accessioned 2018-10-04T06:58:05Z
dc.date.available 2018-10-04T06:58:05Z
dc.date.issued 2018-09-21
dc.identifier.uri http://hdl.handle.net/11602/1198
dc.description MSCAGR (Plant Production)
dc.description Department of Plant Production
dc.description.abstract Indigenous trees play important roles in livelihoods for rural communities. Sclerocarya birrea and Berchemia discolor are indigenous in Africa and are used in rural communities for food and livestock feed, as well as for medicinal and construction purposes. These trees are subject to attack by insects, which can result in lower tree productivity. However, there is no documented information about insects found on both tree species in South Africa. This study investigated the seasonal abundance and diversity of insects on S. birrea and B. discolor in Tshikundamalema Area, Limpopo Province, South Africa. Five trees were selected for each of the two tree species at two sampling sites with different vegetation cover, one site mainly the woodland bushveld while the other site was savannah grasslands. Canopy fogging was used to sample insects. Insect samples were collected at one time point for each of the seasons: summer (February), autumn (May), winter (July) and spring (November). Insects were identified to morphospecies and Simpson’s diversity index was used to compare insect diversity on both trees. Analysis of variance was used to compare the abundance of insects across seasons. The most abundant insects were collected from Coleoptera, followed by Hemiptera, Hymenoptera, Diptera, Lepidoptera and Orthoptera. A total of 3259 insects belonging to the six Orders were collected. All specimens belonging to Coleoptera, Hemiptera and Hymenoptera (3216 in total) were identified to Family level, with a total of 97 morphospecies, belonging to 19 Families. Insects from Diptera, Lepidoptera and Orthoptera were not identified further due to their low numbers. The abundance and diversity of insects were affected by seasons, sites and tree species. The number of insects was high during the spring season with 1782 insects, and summer coming second with 1104 individuals, followed by autumn (238 insects), then winter (92). B. discolor sampled for a great number of insects (1741) as compared to S. birrea (1475). The woodland bushveld (1924 insects) surpassed the savannah grassland (1292 insects) site in terms of the insect numbers sampled. en_US
dc.description.sponsorship NRF en_US
dc.format.extent 1 online resource (x, 76 leaves : color illustration, color maps)
dc.language.iso en en_US
dc.rights University of Venda
dc.subject Berchemia disclor en_US
dc.subject Canopy fogging en_US
dc.subject Diversity index en_US
dc.subject Insect diversity en_US
dc.subject Sclerocarya birrea en_US
dc.title Seasonal abundance and diversity of insects on Sclercarya birrea and Berhemia discolor in Tshikundamalema, Limpopo Province, South Africa en_US
dc.type Dissertation en_US

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