The impact of commercial harvesting on Warburgia salutaris (‘pepper-bark tree’) in Mpumalanga, South Africa

Botha, J.; Witkowski, E.T.F.; Shackleton, Charlie M.

doi:10.1023/b:bioc.0000029333.72945.b0

Cited by 98 publications

(87 citation statements)

References 30 publications

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“…Thus, it is impractical to access and monitor the ecological implications of human use for all species that are recognised as useful. Previous studies selected target species based on special characteristics such as their distribution, density and local importance (see Botha et al 2004;Pfab and Scholes 2004;Bitarilho et al 2006;Monteiro et al 2006b;Tabuti and Mugula 2007). For the present study, we chose a plant that is of particular importance to caatinga communities, Anadenanthera colubrina Vell.…”

mentioning

confidence: 99%

Impact assessment of the harvest of a medicinal plant (Anadenanthera colubrina (Vell.) Brenan) by a rural semi-arid community (Pernambuco), northeastern Brazil

Soldati

Albuquerque

2010

International Journal of Biodiversity Science, Ecosystem Servic

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Rural communities depend on plant resources, and research is necessary to evaluate the impact of their exploitative practices. This study evaluated the use of Anadenanthera colubrina (Vell.) Brenan, angico, a tree species widely employed by the rural community of Carão (Pernambuco, Brazil) and the impacts of this harvesting practice. Angico has been cited as having 28 uses in five categories, and the bark is the most used. The medicinal uses are dominant in the community and the species is collected in four collection zones: home gardens, mountain, pasture and mountain base. In order to evaluate the sustainability of this practice, the extraction events in an A. colubrina population were recorded in 2008, and the population structure was analysed. The 101 interviews resulted in identification of 28 uses of which the medicinal category was most prevalent. The most exploited parts of A. colubrina were the bark and stem; the main collection zones were home gardens and mountains. Of the 1040 A. colubrina individuals that we recorded in an area of 2.7 ha, 70 showed signs of extraction. Although diameter classes do not show any individual preference, the population structure tends towards an inverted J model, which suggests that it is stable and its viability is not affected by the extraction being carried out. The data collected in this study suggest that maintaining the current methods and rates of exploitation of the A. colubrina population is sustainable and allows for the permanence of this local resource stock used by the Carão community. However, projections from our results on A. colubrina population structure should be considered carefully because only one population was analysed, over one-time period.

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mentioning

confidence: 99%

Impact assessment of the harvest of a medicinal plant (Anadenanthera colubrina (Vell.) Brenan) by a rural semi-arid community (Pernambuco), northeastern Brazil

Soldati

Albuquerque

2010

International Journal of Biodiversity Science, Ecosystem Servic

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“…The heavy reliance and use of bark and roots needs to be addressed to ensure appropriate use and conservation. The two biologically active compounds found in Warburgia, warburganal and polygodial, are present in the roots, bark, and also the leaves (Botha et al 2004b). However, the findings show that the leaves are not used at all in the trade in Kenya.…”

Section: Discussionmentioning

confidence: 87%

“…This has resulted in an increase in the number of actors involved in supply chain activities, including collectors who harvest material direct from wild populations and traders who engage in marketing and often collection activities (Dold & Cocks 2002). The intensified collection and trade activities are known to increase the difficulty of managing wild-harvested populations sustainably (Botha et al 2004b). Demand for material generates species-specific trade networks (Cunningham 1997), which can extend across national boundaries (Dold & Cocks 2002, Kariuki & Kibet 2007.…”

Section: Ethnobotany Research and Applications 672mentioning

confidence: 99%

“…This has been to establish the extent of its trade and the impact of harvesting and other disturbances and to develop effective management strategies for in situ and ex situ cultivation (Botha et al 2004b). Evidence suggests that informal markets for medicinal material are disorganized, with varying constraints impeding sustainable use and adequate economic returns (Botha et al 2004a, Mander et al 2007, Williams et al 2007.…”

Section: Ethnobotany Research and Applications 672mentioning

confidence: 99%

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Strategies for Sustainable Supply of and Trade in Threatened Medicinal Tree Species: A case study of genus Warburgia

McMullin

Nieuwenhuis

Jamnadass

2014

Ethnobot. Res. App.

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“…However, this knowledge does not ensure that the extraction is performed in a sustainable manner. When forest products obtain economic valorization, there is often an intensification of extraction and consequently damage occurs to the exploited species (PERES et al, 2003;BOTHA et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

EFFECTS OF HARVESTING ON LEAF PRODUCTION AND REPRODUCTIVE PERFORMANCE OF Copernicia prunifera (Mill.) H.E. Moore1

2016

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-This work aimed to evaluate the consequences of the monthly extraction of immature leaves in survival, leaf production and reproductive performance of Copernicia prunifera H. E. Moore palm, popularly known as carnaúba. One hundred sixty reproductive adult palms were monitored for 17 months in four extractive communities located at the coast of the state of Piauí. As a result, it was observed that leaves, flowers, fruits and seeds production were reduced in the palm submitted to 50% or 75% monthly extraction. Higher levels of extraction were followed by smaller levels in seed germination. No deaths were observed even in the group subjected to 75% monthly leaves exploration. In order not to produce damage to palm trees development it is suggested that leaf extraction rate should not exceed 25% monthly as well as pausing of extractive activity preferentially during fruit maturation.Keywords: Traditional management; Environmental sustainability; Carnaúba. EFEITOS DO EXTRATIVISMO DE FOLHAS IMATURAS NA PERFORMANCE FOLIAR E REPRODUTIVA DE Copernicia prunifera (Mill.)H.E. Moore RESUMO -Este trabalho objetivou avaliar as consequências da extração mensal de folhas imaturas sobre a sobrevivência, produção de folhas e desempenho reprodutivo da palmeira Copernicia prunifera H. E. Moore, popularmente conhecida como carnaúba. Cento e sessenta palmeiras reprodutivas adultas foram monitoradas por 17 meses em quatro comunidades extrativistas localizadas no litoral do Estado do Piauí. O resultado foi que a produção de folhas, flores, frutos e sementes diminuiu 50% e 75% em palmeiras submetidas à extração mensal das folhas imaturas. Elevados níveis de extração foram acompanhados por menores níveis de germinação de sementes. Não foram observadas mortes, mesmo no grupo submetido à extração mensal de folhas de 75%. Para não causar danos ao desenvolvimento das palmeiras, sugerese um pousio, preferencialmente durante o período de maturação dos frutos, e que a taxa de extração mensal das folhas não exceda a 25%.Palavras-chave: Manejo tradicional; Sustentabilidade ambiental; Carnaúba.

show abstract

The impact of commercial harvesting on Warburgia salutaris (‘pepper-bark tree’) in Mpumalanga, South Africa

Cited by 98 publications

References 30 publications

Impact assessment of the harvest of a medicinal plant (Anadenanthera colubrina (Vell.) Brenan) by a rural semi-arid community (Pernambuco), northeastern Brazil

Impact assessment of the harvest of a medicinal plant (Anadenanthera colubrina (Vell.) Brenan) by a rural semi-arid community (Pernambuco), northeastern Brazil

Strategies for Sustainable Supply of and Trade in Threatened Medicinal Tree Species: A case study of genus Warburgia

EFFECTS OF HARVESTING ON LEAF PRODUCTION AND REPRODUCTIVE PERFORMANCE OF Copernicia prunifera (Mill.) H.E. Moore1

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