Population structure and regeneration status of Vitellaria Paradoxa (C. F. Gaertner) under different land management regimes in Atacora department, Benin

Aleza, Koutchoukalo; Wala, Kpérkouma; Bayala, Jules; Villamor, Grace B.; Dourma, Marra; Atakpama, Wouyo; Akpagana, Koffi

doi:10.1007/s10457-015-9787-9

Cited by 27 publications

(23 citation statements)

References 21 publications

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“…Abundance of V. paradoxa, P. biglobosa, L. microcarpa, L. acida and D. mespiliformis is the result of farmers willingness to conserve trees in agricultural areas. Many researchers mentioned the above species as the most dominant one in agroforestry systems of the Sudanian zone (Wala et al, 2005;Folega et al, 2011;Aleza et al, 2015). Species listed in annex 1 are conserved in fields and fallows by local farming communities.…”

Section: Discussionmentioning

confidence: 99%

“…Some food-providing trees and palms, especially fruit-producing ones, have been managed by people in a transition from the wild to cultivation in farmland for millennia, resulting in complex agroforestry systems that contain many different foods (Torquebiau, 1985) Shea tree, Vitellaria paradoxa C.F. Gaertn, a tree belonging to Sapotaceae's family, is the most common species found in most of the traditional agroforestry parklands in West Africa (Breman and Kessler, 2011;Boffa, 2000;Aleza et al, 2015). In Atacora district in Benin, shea agroforests provide to rural households 36 to 46% of their income through the money gained from selling shea-based products (Gnanglé et al, 2009;Dah-Dovonon and Gnangle, 2006).…”

Section: Introductionmentioning

confidence: 99%

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Woody species diversity of Vitellaria paradoxa C.F. Gaertn traditional agroforests under different land management regimes in Atacora district (Benin, West Africa)

Aleza¹,

Villamor²,

Wala³

et al. 2015

Int. J. Biodivers. Conserv.

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Agricultural production in northern Benin is characterized by smallholder traditional agroforestry systems, with on-farm remnant tree species. Among its numerous advantages, agroforestry is known for its valuable contribution to biodiversity conservation. This study quantifies the importance of Vitellaria paradoxa C.F. Gaertn agroforests in terms of woody species conservation in Atacora district in Benin. Forest inventories were performed within 50×50 m plots constructed on a net grid map of Atacora district. Diversity indices were computed for both adult and juvenile species in two land management regimes: fields and fallows. Overall 41 woody species were recorded; 28 in fields and 36 in fallows. Taking into account matured and juvenile individuals, the diversity of woody species increased: 86 species in total; 69 species in fields and 78 in fallows. The biodiversity of V. paradoxa's agroforestry parklands increases from fields to fallows, and decreases from bulk species (considering mature and juvenile species) to adult ones. Leguminosae and Combretaceae were the most abundant families registered. From the Cover Value Index, V. paradoxa, Parkia biglobosa, Lannea microcarpa, Lannea acida and Diospiros mespiliformis were the most abundant species. Support for maintaining this kind of agricultural system is needed, as this exemplifies the synergy for providing, provisioning and supporting services and biodiversity conservation.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Woody species diversity of Vitellaria paradoxa C.F. Gaertn traditional agroforests under different land management regimes in Atacora district (Benin, West Africa)

Aleza¹,

Villamor²,

Wala³

et al. 2015

Int. J. Biodivers. Conserv.

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“…The inverse "J" shape diameter structure is the characteristic of natural vegetation where the density of trees with small diameter is found generally high. However, the diameter structure of Habitat 1 has a bell shape such as the ones described for farmlands and some young fallows in Northern Benin (Aleza et al, 2015) and in old fields in the ecological zone 1 of Togo (Padakale et al, 2015). This is a bell shape structure with a positive asymmetry (c=2.067; 1<c<3.6).…”

Section: Biophysical Patterns Of Habitatsmentioning

confidence: 95%

“…The observed diameter structure was fitted to the 3-parameter Weibull distribution (Johnson and Kotz, 1970). This is a density function very useful because of its flexibility and has been used to describe vegetation structure in many studies (Bonou et al, 2009;Aleza et al, 2015). The density function ƒ of the 3-parameter Weibull distribution is expressed for a tree-diameter x by the following formula:…”

Section: Assessment Of Habitat Biophysical and Spatial Patternsmentioning

confidence: 99%

Habitat biophysical and spatial patterns assessment within Oti-Keran-Mandouri protected area network in Togo

Polo-Akpisso¹,

Folega²,

Ouattara³

et al. 2018

Int. J. Biodivers. Conserv.

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Oti-Keran-Mandouri (OKM) is part of the elephant historical range and one of the priority corridors proposed for elephant conservation in West Africa. However, its potentialities to be a functional corridor are yet to be evaluated in a context of increasing anthropogenic pressure. This study aims at assessing habitat biophysical patterns and fragmentation level. A multicriteria evaluation using fuzzy logic was performed to model elephant habitat suitability and vegetation sampling conducted in 123 plots to describe the habitat. In each plot, the physical parameters of woody plants species were recorded. Biodiversity indices, dendrometric parameters, and diameter structure were computed for each habitat type and compared using Jaccard Index and Kruskal-Wallis test. Habitat fragmentation was assessed using the hypsometric method. Apart from a core area located in the south-east, the remnant good habitat is in small patches. Four habitats were distinguished based on their level of degradation. There is a steady increase in habitat diversity from degraded habitat (Habitat 1) to primary habitat (Habitat 4) with the Shannon index increasing from 0.83 to 1.43 bit. In all the habitats, trees are evenly distributed with an evenness higher than 0.7. Dendrometric parameters are significantly different from one habitat to another (P-value < 0.05) apart from the mean diameter and the average regeneration rate. The suitable habitat for elephant constitutes only 31.5% of the area of OKM. The overall habitat fragmentation is 84.74%. Regeneration rates make an eventual restoration possible but further assessment of the socio-ecological system is needed.

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“…At every designated site, 10 sample plots (2,500 m 2 ) were demarcated using systematic random sampling according to Chazdon et al (2005), Johnson and Bhattacharyya (2001) and Aleza et al (2015). The first plot was randomly located and the subsequent plots were established systematically at least 100 m apart from previously established plot.…”

Section: Introductionmentioning

confidence: 99%

Eco-distribution of Vitellaria paradoxa (G.F. Gaertn) in Kwara State, Nigeria

et al. 2017

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The conservation status of Vitellaria paradoxa in Kwara state was studied. The frequency ranged from 20% at Offa and Ilofa to100% at Jebba and Kaiama, as the shea tree occurred twice in the ten sampling points at Offa and Ilofa, but occurred in all sampled sites at Jebba and Kaiama. The highest tree mean density of 34 trees/ha was noted at Kaiama and the lowest at Offa 4 trees/ha. The overall mean densities of the species was 13.33 trees/ha. These show that Vitellaria paradoxa trees were more conserved towards the Northern part of the state than the Southern part. The majority of the trees were between (21-30 cm) diameter class, which indicated that they were saplings and very few were around (<10 cm) diameter class. The results showed low population of seedlings in the state, especially at the Northern part of the state. This might be due to trees' removal for farming activities, uncontrolled incessant bush burning and trampling by grazing live stocks in the areas.

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Population structure and regeneration status of Vitellaria Paradoxa (C. F. Gaertner) under different land management regimes in Atacora department, Benin

Cited by 27 publications

References 21 publications

Woody species diversity of Vitellaria paradoxa C.F. Gaertn traditional agroforests under different land management regimes in Atacora district (Benin, West Africa)

Woody species diversity of Vitellaria paradoxa C.F. Gaertn traditional agroforests under different land management regimes in Atacora district (Benin, West Africa)

Habitat biophysical and spatial patterns assessment within Oti-Keran-Mandouri protected area network in Togo

Eco-distribution of Vitellaria paradoxa (G.F. Gaertn) in Kwara State, Nigeria

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