Dynamique du peuplement ligneux dans un parcours agrosylvopastoral du Sénégal

A study of the relationship between man and his environment was carried out in Brazzaville, Republic of Congo in the peri-urban forest of Djoumouna. Socio-economic and ethnobotanical surveys conducted among the human populations in riparian areas were supported by direct field observations and a review of the literature. Data were collected from a 2 km zone of influence around the Djoumouna forest. The group of survey participants, organized into four age groups, included all socio-professional categories and was made up of 143 heads of household. The survey participants were of both genders and ranged in age from 15 to over 45 years old. Ethnobotanical indicators were used as data analysis tools, specifically, ethnobotanical use-value, survey participant consensus factor, and level of fidelity. This study identified 13 plant species and more than 14 animal taxa as Non-Timber Forest Products (NTFPs) of animal and plant origin. Most of the taxa listed are used in traditional foods and/or phytotherapy. The low values of some ethnobotanical indicators show that these NTFPs, which are not highly sought after and valued by the population, are also rare in this peri-urban ecosystem. This observation is also valid when considering the involvement of survey participants by age group. However, the survey participant consensus factor reflects a unanimity of traditional exploitation of these NTFPs within the society. The analysis of the ethnobotanical data clearly show a difference in the level of exploitation of NTFPs between genders with men having more interest in finding and using NTFPs. Finally, the study indicates (i) gender specialization is associated with NTFP activities and exploitation, and (ii) a progressive erosion of traditional knowledge is occurring between age groups.

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“…Citation frequency (CF) was calculated for each ecosystem service category, as shown in the works of Sarr et al. (2013) , Ngom et al.…”

Section: Methodsmentioning

confidence: 99%

Ethnobotanical indicator values of Non-Timber Forest Products from the Djoumouna peri-urban forest in Brazzaville, Republic of Congo

Kimpouni

Nzila

Watha-Ndoudy

et al. 2021

Heliyon

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“…In addition to the abovementioned aspects, the Djoumouna periurban forest remains a tourist and recreational centre for more than one riparian [56,57]. is attractiveness, underpinned by various reasons, increases its vulnerability to ever-increasing anthropogenic pressure [41,[58][59][60][61].…”

Section: Dependence Of the Population On The Forestmentioning

confidence: 99%

“…Examples include Quassia africana and Sarcocephalus latifolius whose therapeutic value is not in doubt [68,69]. e values of the informant consensus factor can be interpreted as indicating anthropogenic pressure on these taxa [41,[59][60][61]. Indeed, Quassia africana and Sarcocephalus latifolius, which are very abundant and easily accessible, are much in demand for their antimalarial properties.…”

Section: Population and Forest Dependencementioning

confidence: 99%

Exploring Local People’s Perception of Ecosystem Services in Djoumouna Periurban Forest, Brazzaville, Congo

Kimpouni

Nzila

Watha-Ndoudy

et al. 2021

International Journal of Forestry Research

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The perception of ecosystem goods and services by local residents is studied in Brazzaville, around the periurban forest of Djoumouna. This study, which documents the ecosystem services provided to communities by this ecosystem facing anthropogenic degradation, evaluates the understanding and consideration of these functions, according to socioprofessional categories. Socioeconomic and ethnobotanical surveys conducted among the group of informants are supported by direct field observations and literature review. The data collected within a 2 km radius around the forest were subjected to descriptive and statistical analysis. The group of informants, including all socioprofessional strata, was organised into 4 age groups and involved 143 heads of household aged from 15 to over 45. The survey reveals 14 ecosystem services that fall into three categories. The provisioning services included food, wood energy, pharmacopoeia, and wood services. The regulatory functions cited are maintaining air quality, shade, erosion control, and windbreak. Recognized sociocultural services are the source of income, recreation, and ecotourism, source of inspiration, fishing, initiation sanctuary, and hunting. According to gender, men are more dependent on the forest than women, and those aged 15–25 and over 45 are the most active. The socioprofessional scale shows an unequal exploitation of the forest. The informants, at least for the majority, integrate the notions of the value of ecosystem services, provided by the Djoumouna periurban forest, into their daily lives. Finally, the study highlights the social and ecological value of periurban and urban forests in the daily lives of people and urban resilience.

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“…Au niveau de la forêt cela s'explique par sa mise en défens depuis cinq ans. La distance moyenne entre les individus était relativement élevée dans les deux zones ; ce qui pouvait traduire une dégradation du milieu (Sarr et al, 2013b) malgré leur protection. En effet cela s'est traduit par un rapport entre la densité théorique et la…”

Section: Structure Du Peuplement Selon La Hauteurunclassified

Caractéristiques du peuplement ligneux de deux systèmes d’utilisation des terres dans la région de Kaffrine au Sénégal

Dione

Ngom

Sarr³

et al. 2021

Rev. Elev. Med. Vet. Pays Trop.

Self Cite

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L’étude a porté sur la caractérisation du peuplement ligneux de deux systèmes d’utilisation des terres (la forêt qui est une mise en défens et les champs) dans le terroir de Ngouye au Sénégal. Elle a été effectuée dans une zone agropastorale qui accueille annuellement plusieurs familles de transhumants. Au moyen d’un échantillonnage par relevés de la végétation ligneuse et d’enquêtes auprès des populations nous avons inventorié 28 espèces appartenant à 25 genres et 15 familles botaniques. Les Fabaceae (sous-familles : Mimosoideae, Caesalpinioideae, Faboideae) ont été les plus représentées, suivies des Combretaceae. Les paramètres de l’étude ont révélé qu’il existait des différences nettes entre les deux systèmes, ce qui montrait leur hétérogénéité, avec par ailleurs une grande stabilité de peuplement en forêt. Le peuplement était généralement très jeune, avec un grand pourcentage d’individus dans la première catégorie de diamètreet de hauteur. Les champs avaient la plus forte proportion d’individus adultes mais le taux de régénération dans cette zone était inférieur à celui de la forêt. La richesse spécifique des champs était bien supérieure à celle de la forêt. Sur le plan pastoral les ligneux intervenaient dans l’alimentation du bétail.

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Dynamique du peuplement ligneux dans un parcours agrosylvopastoral du Sénégal

Cited by 15 publications

References 3 publications

Ethnobotanical indicator values of Non-Timber Forest Products from the Djoumouna peri-urban forest in Brazzaville, Republic of Congo

Ethnobotanical indicator values of Non-Timber Forest Products from the Djoumouna peri-urban forest in Brazzaville, Republic of Congo

Exploring Local People’s Perception of Ecosystem Services in Djoumouna Periurban Forest, Brazzaville, Congo

Caractéristiques du peuplement ligneux de deux systèmes d’utilisation des terres dans la région de Kaffrine au Sénégal

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