Impact of land-use type and bark- and leaf-harvesting on population structure and fruit production of the baobab tree (Adansonia digitata L.) in a semi-arid savanna, West Africa

Schumann, Katharina; Wittig, Rüdiger; Thiombiano, Adjima; Becker, Ute; Hahn, Karen

doi:10.1016/j.foreco.2010.09.009

Cited by 93 publications

(85 citation statements)

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“…size class distribution, fruit production) of important NTFP-providing tree species in West Africa (e.g. Gaoue and Ticktin 2007;Djossa et al 2008;Schumann et al 2010). However, these studies on their own may not adequately justify the conservation assessment of the population status of species (Dovie et al 2008).…”

Section: Introductionmentioning

confidence: 99%

“…In a previous study (Schumann et al 2010), we gained ecological knowledge about one of the most important NTFP-providing trees in West Africa; Adansonia digitata L., commonly known as baobab. The multipurpose baobab tree is widely used for household, medicinal, and nutritional purposes and provides additional income to farmers (Sidibé and Williams 2002;Gustad et al 2004;Wickens and Lowe 2008).…”

Section: Introductionmentioning

confidence: 99%

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Uses, management, and population status of the baobab in eastern Burkina Faso

et al. 2012

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Many cash-poor households in the semiarid tropics strongly depend on non-timber forest products (NTFPs) for livelihood. Increasing threats on NTFP-providing tree species, due to land-use intensification, require ecological studies as well as additional information about species' uses and management provided by local people. The objectives of our study were to (i) document uses and management of the baobab (Adansonia digitata L.), (ii) investigate knowledge distribution among genders and different villages, and (iii) assess the population status of the baobab in eastern Burkina Faso. We conducted an ethnobotanical survey among Gulimanceba people and performed a quantitative analysis using different measures of knowledge. Interviews reveal that the baobab is harvested by local people for 25 use-types. The fruits are the most important plant part and baobab products are of special importance for nutritional uses. Local management of baobab seems to be so far sufficient to maintain baobab populations. The fact that we found some differences in uses and management of baobab between genders and villages emphasizes the importance of gender-and region-related management recommendation. People are able to use and manage the baobab in a relative sustainable way as human population density is relatively low and as they have relatively good access to the forest compared to other regions of Burkina Faso. However, in the light of landuse and climate changes, adapted management strategies are required. We conclude that ethnobotanical studies on a small-scale level are of high importance in order to develop management strategies that are reliable in a specific region.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Uses, management, and population status of the baobab in eastern Burkina Faso

et al. 2012

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“…Cependant, la productivité de certaines espèces est influencée par le mode d'utilisation des terres (SCHUMANN et al, 2010). Ces auteurs ont observé que l'émondage combiné au diamètre à 1,30 m de hauteur influence significativement la production fruitière de Adansonia digitata.…”

Section: Productivité En Calicesunclassified

Productivité et valeur économique des calices de Bombax costatum Pellegr. & Vuillet en zone soudanienne du Burkina Faso

et al. 2014

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Arbre des savanes et des forêts claires sahélo-soudaniennes à guinéennes, Bombax costatum est une espèce fortement exploitée pour ses calices et menacée dans plusieurs localités au Burkina Faso. Une alternative à la conservation résiderait dans la reconnaissance de l'intérêt économique de l'espèce. Cette étude évalue la valeur monétaire de la productivité en calices de B. costatum pour fournir des arguments nécessaires à sa conservation. Pour ce faire, des individus de B. costatum ont été échantillonnés dans trois modes d'utilisation des terres ; leur production florale a été intégralement récoltée afin d'évaluer la quantité de calices produite. Des modèles allométriques ont été élaborés pour prédire la productivité en calices. La valeur monétaire des calices par pied de B. costatum a été estimée à partir de la valeur d'échange des calices secs sur les marchés en trois périodes de l'année. Les résultats montrent que la productivité en calices n'est pas significativement influencée par le mode d'utilisation des terres. Parmi les modèles allométriques ajustés, le modèle linéaire de la forme vY = a + bX prédit le mieux la productivité en calices de B. costatum. La valeur monétaire des calices évaluée par pied varie suivant le diamètre et la période. Pour une même période, elle est de 2,57 $US pour les diamètres compris entre 10 et 25 cm et 26,10 $US pour les diamètres supérieurs ou égaux à 50 cm. Sachant que la valeur monétaire des calices ne représente qu'une partie de la valeur monétaire totale de B. costatum, il importe de sensibiliser les populations locales à la plantation de l'espèce et à des techniques de récolte peu préjudiciables.

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“…Additionally, based on demographic profiles of tree species, tree regeneration appears problematic in many humanmodified landscapes (e.g. Fandohan et al 2010;Schumann et al 2010;Venter and Witkowski 2010). For example, a study in Benin shows that the largest shea trees are often in villages or fields, but seedling survival is low compared to nearby PAs (Djossa et al 2008).…”

Section: Agroforestrymentioning

confidence: 99%

“…For example, studies of demographic processes (e.g. Venter and Witkowski 2010;Djossa et al 2008;Schumann et al 2010) and population trends (e.g. Trimble and van Aarde 2011;Stoner et al 2007) for species inhabiting human-modified landscapes can provide insight beyond mere patterns of occurrence.…”

Section: The Science Of Biodiversity In Human-modified Landscapesmentioning

confidence: 99%

Supporting conservation with biodiversity research in sub-Saharan Africa’s human-modified landscapes

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2014

Biodivers Conserv

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Protected areas cover 12% of terrestrial sub-Saharan Africa. However, given the inherent inadequacies of these protected areas to cater for all species in conjunction with the effects of climate change and human pressures on protected areas, the future of biodiversity depends heavily on the 88% of land that is unprotected. The study of biodiversity patterns and the processes that maintain them in human-modified landscapes can provide a valuable evidence base to support science-based policy-making that seeks to make land outside of protected areas as amenable as possible for biodiversity persistence. We discuss the literature on biodiversity in 2 sub-Saharan Africa"s human-modified landscapes as it relates to four broad ecosystem categorizations (i.e. rangelands, tropical forest, the Cape Floristic Region, and the urban and rural built environment) within which we expect similar patterns of biodiversity persistence in relation to specific human land uses and land management actions. Available research demonstrates the potential contribution of biodiversity conservation in human-modified landscapes within all four ecosystem types and goes some way towards providing general conclusions that could support policy-making. Nonetheless, conservation success in humanmodified landscapes is hampered by constraints requiring further scientific investment, e.g. deficiencies in the available research, uncertainties regarding implementation strategies, and difficulties of coexisting with biodiversity. However, information currently available can and should support efforts at individual, community, provincial, national, and international levels to support biodiversity conservation in human-modified landscapes.

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Impact of land-use type and bark- and leaf-harvesting on population structure and fruit production of the baobab tree (Adansonia digitata L.) in a semi-arid savanna, West Africa

Cited by 93 publications

References 32 publications

Uses, management, and population status of the baobab in eastern Burkina Faso

Uses, management, and population status of the baobab in eastern Burkina Faso

Productivité et valeur économique des calices de Bombax costatum Pellegr. & Vuillet en zone soudanienne du Burkina Faso

Supporting conservation with biodiversity research in sub-Saharan Africa’s human-modified landscapes

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