| 1. |
- Bognounou, Fidèle, et al.
(author)
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Impact of disturbance by roadwork on Pteleopsis suberosa regeneration along roadside environments in Burkina Faso, West Africa
- 2009
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In: Journal of Forestry Research. - : Springer Science and Business Media LLC. - 1007-662X .- 1993-0607. ; 20, s. 355–361-
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Journal article (peer-reviewed)abstract
- The seedling population structure of Pteleopsis suberosa and their regeneration mechanisms were investigated in four roadside environments (graded, adjacent, intermediate and ungraded areas) along paved and unpaved roads in West Africa. A total of 203 quadrats of 2 m × 5 m in size were surveyed and placed along transects parallel to the roads. Within each quadrat, the total number of seedlings and the number of living shoots per seedling base were recorded. Regeneration mechanisms were determined by assessing basal and aerial sprouts and excavating the root systems below ground level. The results show that the total seedling density and the densities of single- and multi-stemmed individuals varied significantly (p < 0.05) among the four roadside environments. However, all seedlings were produced asexually; root suckers were predominant (98%) compared to water sprout (1%) and coppices (less than 1%). This study demonstrates that an intermediate level of soil disturbance from grading along paved and unpaved roads may stimulate P. suberosa regeneration by root suckering. Road type (paved and unpaved) did not affect seedling density, but was a highly significant variable in relation to the coppicing ability of P. suberosa populations in roadside sites. In conclusion, P. suberosa is a disturbance-tolerant species which can proliferate mainly by root suckering after roadwork disturbance.
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| 2. |
- Bognounou, Fidele, et al.
(author)
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Informants based ethnobotany and utility evaluation of five combretaceae species : differentiation by ethnicity and geographical location
- 2011
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In: Forests, Trees and Livelyhoods. - : Taylor & Francis Group. - 1472-8028 .- 2164-3075. ; 20:4, s. 265-281
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Journal article (peer-reviewed)abstract
- In Africa, local communities depend on forests and plants for their daily needs including goods and services. This paper describes ethnobotanical knowledge of five Combretaceae species in western Burkina Faso. Information was obtained from semi-structured interviews, direct observation and personal conversation with local experts and specialists in plant uses. Data were collected in four villages among four ethnic groups. A total of 150 specialist male and female respondents were involved and 400 users were interviewed. The data were analyzed with generalized linear models with binomial errors. The results show that there is a higher share of ethnobotanical knowledge within an ethnic/village group than between ethnic/village groups. The ethnobotanical information was classified in six main categories: food, fodder, construction materials, fuelwood, handicraft and pharmacopoeia, with the six categories except food representing important uses for all the study species. No significant difference was found for gender and age regarding the knowledge of plant species uses, which may be due to the daily life importance, and to the ecological abundance of the selected Combretaceae species.
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| 3. |
- Bognounou, Fidèle, et al.
(author)
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Regeneration of five Combretaceae species along a latitudinal gradient in Sahelo-Sudanian zone of Burkina Faso
- 2010
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In: Annals of Forest Science. - : Springer Science and Business Media LLC. - 1286-4560 .- 1297-966X. ; 67
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Journal article (peer-reviewed)abstract
- Seedling density and the regeneration mechanisms of five tree species, Anogeissus leiocarpa, Combretum aculeatum, Combretum micranthum, Combretum nigricans, and Pteleopsis suberosa were investigated in relation to latitudinal gradient across the Sahelo-Sudanian zone of West Africa.Data were collected on 461 quadrats (2 m x 5 m) laid out every 30 m on transect lines through Combretaceae communities at four latitudinal positions. Regeneration mechanisms were determined by excavating the below ground root system and assessing basal and aerial sprouts.The results showed a significant species x latitudinal position effect on the total density of seedling populations, and the density of single-and multi-stemmed individuals (p < 0.001). C. aculeatum and C. micranthum were abundant in the North-Sahelian sector, C. nigricans and P. suberosa in the Sudanian sector and A. leiocarpa across a wide range from the South-Sahelian to South-Sudanian sectors. In general, 58% of the seedlings were regenerated asexually (as coppice, water sprout, layer, and root sucker) while 42% were sexual recruits (as true seedling and seedling sprouts). The proportion of vegetatively propagated seedlings increased with increasing latitude for all species except C. micranthum, for which a clear decreasing trend was observed. The relative importance of the different regeneration mechanisms varied among species: seedling sprouts were important for A. leiocarpa, C. aculeatum and C. nigricans, coppice for C. micranthum and sucker for P. suberosaThe significant interaction observed between species and latitudinal position highlights the importance of accurate species-site matching to ensure successful restoration of degraded areas in the Sahelo-Sudanian zone. Inter-species differences in regeneration mechanism could be related to their biology and ecological adaptation to the site-specific biotic and abiotic factors.
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| 4. |
- Bognounou, Fidèle, et al.
(author)
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Woody vegetation structure and composition at four sites along a latitudinal gradient in Western Burkina Faso
- 2009
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In: Bois Et Forets Des Tropiques. - 0006-579X. ; , s. 29-44
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Journal article (peer-reviewed)abstract
- Understanding the distribution patterns of plant species and the underlying factors is crucial to the conservation and management of plant communities in savannah-wood land ecosystems. This article describes the species composition, structure and diversity of woody species at four sites along a latitudinal gradient in the North Sahelian, South Sahelian, North Sudanian and South Sudanian sectors in western Burkina Faso. All woody species were systematically identified and measured in 82 sample plots measuring 50 x 20 m(2). Density, dominance, frequency and species and family importance values were computed to characterize the species composition. A range of diversity measures were calculated to analyze the heterogeneity of each site. A total of 74 species representing 26 families and 53 genera were found. The predominant families were Combretaceae, Mimosaceae and Caesalpiniaceae. Significant differences were found between the structural characteristics (p < 0.001) of sites and species. At some sites, the tree size-class distributions formed a reverse J-shaped curve, indicating vegetation dominated by juvenile individuals. Similarity in tree species composition between sites was found to be low, which indicates high beta diversity and reflects differences in habitat conditions, topography and between site distances. These site-specific differences highlight the importance of landscape-scale approaches in understanding species distribution pat terns, composition, structure and diversity, as well as in applying restoration and conservation measures geared to total basal area and diversity in these ecosystems.
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| 5. |
- Coulibaly-Lingani, Pascaline, et al.
(author)
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Determinants of access to forest products in southern Burkina Faso
- 2009
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In: Forest Policy and Economics. - : Elsevier BV. - 1389-9341 .- 1872-7050. ; 11, s. 516-524
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Journal article (peer-reviewed)abstract
- There is an increasing understanding that forests and the forestry sector are key elements in poverty reduction strategies in Africa. However, issues of equity between various forest users are becoming a major challenge to environmental development, forest management and poverty reduction. This paper presents an analysis of household representatives' socio-economic determinants and other constraints on accessing forest products, based on data collected through a questionnaire survey of 1865 respondents in seven districts of the Sissili province, southern Burkina Faso. Three logistic regression models were developed to examine determinants of access to the forest for collecting fuelwood, grazing livestock and collecting non-timber forest products (NTFPs). The results showed that access to forest products is associated with individual characteristics. Age, ethnicity, occupation and sources of income were significant determinants of access to all types of forest products. Access to the forest for grazing livestock was further influenced by gender and household size, while access to NTFPs was influenced by gender, household size and education level of the respondents. The formal forest law that precludes grazing in the forest, and customary rules and regulations pertaining to land tenure, were reported to be serious constraints to forest access for women and migrant people. Understanding the factors influencing access to products from commonly-owned forest resources could form the basis for developing, modifying and targeting policy instruments that promote equitable access. Policies should particularly encourage the direct involvement of vulnerable and marginalized groups (women and migrants) in forest management activities. (C) 2009 Elsevier B.V. All rights reserved.
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| 6. |
- Coulibaly-Lingani, Pascaline, et al.
(author)
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Factors influencing people's participation in the forest management program in Burkina Faso, West Africa
- 2011
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In: Forest Policy and Economics. - : Elsevier BV. - 1389-9341 .- 1872-7050. ; 13, s. 292-302
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Journal article (peer-reviewed)abstract
- In attempts to foster sustainable forest management practices, participation of local communities has become widely recognized as a better alternative than the traditional protectionist approach. This paper analyzed factors influencing local people's participation in forest management program in Sissili and Ziro provinces, southern Burkina Faso based on data collected through a household survey of 165 members of forest management groups using factor analysis and multiple regression. Factor analysis resulted in a three-factor solution, which accounted for 64.82% of the total variance. Participation in decision-making, followed by participation in forest conservation and economic benefits were found to be the main factors influencing participation in the forest management program. Gender, household size, income source, land tenure status and technical assistance also appeared to influence members' participation in the program. The results indicate that participatory management program can be enhanced by changing the administrative structure of forest management groups in order to empower members in decision-making processes. In addition, increasing women's participation and more equitable benefit-sharing among user groups are essential in improving the success of the participatory forest management program. Thus, policies reforms to improve the structure of the forest management groups and to establish equitable benefit-sharing mechanisms are essential to improve the participation of local people in the forest management program and, hence, require immediate attention. (C) 2011 Elsevier B.V. All rights reserved.
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| 7. |
- Coulibaly-Lingani, Pascaline, et al.
(author)
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Participatory forest management in Burkina Faso: Members' perception of performance
- 2014
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In: Journal of Forestry Research. - : Springer Science and Business Media LLC. - 1007-662X .- 1993-0607. ; 25, s. 637-646
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Journal article (peer-reviewed)abstract
- This study examines variations in the performance of participatory forest management programs among four forest management groups (FMGs) in southern Burkina Faso, and assesses the factors that influence their members' perceptions of performance through a household survey of 216 members. Variations in performance scores among the FMGs were analyzed through multivariate analysis of variance while multinomial regression analysis was used to identify factors that influence their perception of the performance. The results reveal significant differences in performance scores among FMGs. embers of some FMGs perceived that the participatory forest management program enabled them to get benefits from the sale of fuelwood while performance scores in the forest conservation and decision-making processes is generally poor. The score for economic performance of FMGs in turn was related to better access to roads and markets. Group size tended to enhance economic performance via its strong influence on annual fuelwood harvest, while the resource base appeared to be inconsequential. Members of the forest management groups perceived that large group size and group heterogeneity, particularly in terms of ethnicity, as well as knowledge and awareness of problems related to the forest environment. have no influence on the performance of their respective groups: For rural communities to have a favorable disposition toward sustainable forest management, differences in member understanding of collective actions and their impact before and during the implementation of participatory forest management programs should be considered.
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| 8. |
- Dayamba, Sidzabda Djibril, et al.
(author)
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Community dynamics and phytomass of herbaceous species in the Sudanian savanna-woodlands of Burkina Faso: short-term impact of burning season
- 2010
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In: African Journal of Range and Forage Science. - : National Inquiry Services Center (NISC). - 1022-0119 .- 1727-9380. ; 27, s. 171-177
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Journal article (peer-reviewed)abstract
- Fire is important for the maintenance and conservation of African savanna ecosystems, and prescribed fire is used in the Sudanian savanna-woodlands of West Africa as a forest management tool. Yet, the effects of fire on savanna ecosystems and especially on plant species is very much dependent on the nature of the fire regime. We assessed the effects of season of burning on herbaceous species dynamics and phytomass for four years (2006-2009). Neither fire season nor the interaction between year and fire season affected species richness, diversity, phytomass and dominant species (Andropogon chinensis (Nees) Merr.) abundance. There was, however, an interannual variation (p 0.05) on all herbaceous species attributes except abundance of A. chinensis. This could be related to interannual variation in amount and frequency of rainfall. We also examined the whole species community using canonical correspondence analysis on the species data matrix and the fire treatment data matrix. There was no clear indication of some species showing affinity to a particular season of burning, although certain tendencies were observed. Overall, in the short-term (four years), there is no evidence of burning season affecting herbaceous species community in this ecosystem.
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| 9. |
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| 10. |
- Dayamba, Sidzabda Djibril, et al.
(author)
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Effects of aqueous smoke solutions and heat on seed germination of herbaceous species of the Sudanian savanna-woodland in Burkina Faso
- 2010
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In: Flora. - : Elsevier BV. - 0367-2530 .- 1618-0585. ; 205, s. 319-325
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Journal article (peer-reviewed)abstract
- Smoke generated by burning of plant materials has widely been recognized as a germination cue for some species from both fire prone and fire-free ecosystems. It is an important factor for the understanding of vegetation dynamics and could have potential use for ecological management and rehabilitation of disturbed areas. Individual species, however, seem to have a specific requirement for the type and dosage of smoke treatments. In the present study, six different concentrations of smoke solution were tested on 13 herbaceous species by soaking the seeds for 24 h. The germination of a forb species, Borreria scabra, was significantly stimulated (p < 0.05) by the smoke treatment while that of the annual grass species, Euclasta condylotricha, was significantly inhibited (p < 0.05) by 100% smoke solution treatment. Contrary to our expectation that another fire-related cue, heat shock, would break the physical dormancy of the species tested, it was not promotive. For non-dormant seeds of B. scabra and Borreria radiata, high temperatures were lethal while low temperature induced physiological dormancy that was overcome in the former species within 30 days of the germination trial. For some species, responses to smoke did not corroborate with the field-observed response to fire, making ecological interpretation challenging. For responsive species, the smoke treatment could be a simple approach for promoting their re-establishment in areas where it is needed. More investigations are needed to assess the spread of response to smoke. (C) 2010 Elsevier GmbH. All rights reserved.
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