Tree bark as a non-timber forest product: The effect of bark collection on population structure and dynamics of Garcinia lucida Vesque

Guedje, Nicole Marie; Zuidema, Pieter A.; During, Heinjo J.; Foahom, Bernard; Lejoly, Jean

doi:10.1016/j.foreco.2006.09.029

Cited by 57 publications

(46 citation statements)

References 24 publications

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“…The analysis here of the state of the A. colubrina population structure is static in time and characteristic of only one-time point. Our evaluation supports a strong inference on the status of the population, but, as stated by Guedje et al (2007), care is needed when making long-term assertions, especially because cultural aspects of human populations (knowledge management, manner of use) change over time. However, this conclusion must be contextualised in relation to the available literature (see Almeida and Albuquerque 2002;Vieira et al 2002;Monteiro et al 2006a;Lucena 2009), which suggests the vulnerability of this species under certain conditions.…”

Section: Population Structure and Extraction Of A Colubrinasupporting

confidence: 63%

“…These data suggest that local specificities can compromise the presence of A. colubrina in the environment. Guedje et al (2007) used the same tools to examine the environmental sustainability of Garcinia lucida Vesque bark extraction and concluded that, despite the diameter distribution being a typical stable population model, it was not possible to provide long-term conclusions about the persistence of this species if extraction events continue. The analysis here of the state of the A. colubrina population structure is static in time and characteristic of only one-time point.…”

Section: Population Structure and Extraction Of A Colubrinamentioning

confidence: 99%

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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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Section: Population Structure and Extraction Of A Colubrinasupporting

confidence: 63%

Section: Population Structure and Extraction Of A Colubrinamentioning

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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“…This confirmed observations obtained by Guedje et al (2007) in Cameroun and study of Vermeulen et al (2012) who recorded good bark regrowth in bigger diameter trees on the same trees after 36 months. This is an important finding given that inventories conducted in Kwazulu-Natal (Geldenhuys 2004) and in Cameroon (Guedje et al, 2007) indicated that bark harvesters avoid smaller trees and target bigger trees that have better vitality and good bark recovery, which might consequently mitigate the impact of bark harvesting on the species. However, if the demand for bark of a certain species is very high, as for example in the case of Prunus africana in Cameroon, Madagascar and Island of Bioko, all sizes were found to be barkharvested (Cunningham and Mbenkum 1993;Stewart, 2003).…”

Section: Bark Recovery Rates After Debarking Influence Of Altitude supporting

confidence: 91%

“…For example, inappropriate bark harvesting methods such as ring barking of trees resulted in mortality of all trees of Khaya senegalensis (Gaoue and Ticktin, 2007), Garcinia lucida in Cameroon (Guedje et al, 2007), and Lannea kerstingii, Maranthes polyandra, Parkia biglobosa, Pseudocedrela kotschyi in Benin (Delvaux, 2009). The exact cause of death in a particular tree cannot be known, although harvested Prunus africana trees are known to be attacked by insects or fungal diseases, and trees can become dehydrated if the tree was harvested in the dry season (Geldenhuys et al, 2007).…”

Section: Effect Of Bark Harvesting On the Survival Of The Speciesmentioning

confidence: 99%

The Effects of Some Ecological and Anthropic Factors on the Survival and Bark Recovery Rate of Prunus africana (Rosaceae) in South-West, Cameroon

Caroline¹,

François²,

Josette³

et al. 2016

Int. J. Curr. Res. Biosci. Plant Biol.

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A b s t r a c t A r t i c l e I n f oPrunus africana is important for its bark used in the treatment of benign prostate hyperplasia in SouthWest Cameroon which has led to overexploitation of natural population of the species. Prunus africana is listed as an endangered species. Despite the relevance of bark, little information on the effects of some ecological and anthropic factors on the survival and bark recovery rate of Prunus africana is known. Debarking followed a combination of four factors: season of bark harvesting, three stem diameter classes and three intensities of trunk circumference debarked. After debarking, trees were trimestrially monitored for a two years period during which the survival of the tree and the speed of regeneration of the bark were recorded. Results show a dead rate of 13.33%. The rate of recovery of the bark at low altitude was about 21.27 cm/year. The best season for debarking was the rainy season (27.49 cm/year). Trees with a weak diameter (20-30 cm) showed a low rate of recovery (18.28 cm/year) and also those whose bark were peeled on a surface of 75 % of the tree's diameter (29.09 cm/year). These factors have important implications in drawing strategies for sustainable harvesting, management and conservation of this species.

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“…This species is a gregarious species that grows in dense stands on the slopes of forests above 500 meters of altitude. However, there are several sites with a relatively high mortality rate, resulting from an anarchic and intensive exploitation of this resource (Guedje, Zuidema, During, Foahom, & Lejoly, 2007). Studies on the exploitation and management of Scorodophloeus zenkeri in the Ngovayang forest in southern Cameroon reveal that trees are generally cut down when diameter at breast height is more than 35cm for the exploitation and marketing of their bark which is used as a condiment or spice (Ndzomo, 2011).…”

Section: Introductionmentioning

confidence: 99%

Anatomical Characteristics of Garcinia lucida (Vesque) and Scorodophloeus zenkeri (Harms) Wood and Debarking Response in the South Region Cameroon

Solefack

Beeckman²,

Temgoua

et al. 2017

SAR

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The aim of this work was to investigate the possible anatomical changes of Garcinia lucida and Scorodophloeus zenkeri after the removal of their bark. Debarking was done on individuals of each species at 1.30 m from the soil. The wound was rectangular in shape with 30 cm side. There was a follow-up every three months for nine months during which the survival and rate of regeneration of the bark were recorded. A block of cube was cut from the regenerated and intact wood of species for microtomy and microscopy activities. On the cross-section of each wood, vessel features like density and diameter were measured before and after wounding. Semi-automatic measurements were made using the SpectrumSee digital image analysis software. In the wood of the two species, it appeared that the density of the vessels before debarking was significantly comparable to the density after debarking, while the diameter of vessels in the regenerated wood was smaller. The cambial area increased slightly in the rainy season for all species. After nine months all the species started the restoration of their conductive zone. G. lucida heals its wound more rapidly than S. zenkeri.

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Tree bark as a non-timber forest product: The effect of bark collection on population structure and dynamics of Garcinia lucida Vesque

Cited by 57 publications

References 24 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

The Effects of Some Ecological and Anthropic Factors on the Survival and Bark Recovery Rate of Prunus africana (Rosaceae) in South-West, Cameroon

Anatomical Characteristics of Garcinia lucida (Vesque) and Scorodophloeus zenkeri (Harms) Wood and Debarking Response in the South Region Cameroon

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