Effect of provenance on population structure and regeneration of six multiple-use tree species along Ouémé catchment in Benin: Implications for conservation

Lokonon, Bruno Enagnon; Gbemavo, Dossou Séblodo Judes Charlemagne; Sodoté, Fabrice Enagnon; Manda, Leonard; Kakaï, Romain Glèlè; Sinsin, Brice

doi:10.1016/j.tfp.2022.100206

Cited by 3 publications

(3 citation statements)

References 45 publications

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“…There is no doubt that this tree is one of the most important indigenous tree species and is highly valued by local populations in the Sudano-guinea savanna region of Nigeria. The species provides several goods and services (food, medicine, and income) to rural populations, contributing to socioeconomic value (Okoye et al 2014, Lokonon et al 2022. The seeds and pulp of P. biglobosa are widely consumed by rural and urban populations, and their sale generates substantial income for many people, particularly women (Lokonon et al 2022).…”

Section: En= Endangered B2ab (Ii III V)mentioning

confidence: 99%

“…The species provides several goods and services (food, medicine, and income) to rural populations, contributing to socioeconomic value (Okoye et al 2014, Lokonon et al 2022. The seeds and pulp of P. biglobosa are widely consumed by rural and urban populations, and their sale generates substantial income for many people, particularly women (Lokonon et al 2022). Again, the seeds are harvested in large quantities for the production of a kind of local pudding called daddawa (in Hausa), which is used for seasoning soup.…”

Section: En= Endangered B2ab (Ii III V)mentioning

confidence: 99%

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Application of IUCN Red List Criteria for Assessment of Some Savanna Trees of Nigeria, West Africa

Nodza,

Tochukwu,

Igbari

et al. 2024

Preprint

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Nigeria is one of the most floristic rich countries on the continent of Africa due to the variation in climate, which favors the growth of several species. Sadly, its biodiversity is one of the most threatened in the world, mainly due to deforestation and various unsustainable land use patterns, which are human activities. However, these anthropogenic activities are more prevalent in Nigeria's northern savanna zone (NSZ). In this study, we present the first regional conservation assessments and red listing of tree species in the northern savanna zone (NSZ) of Nigeria according to the International Union for Conservation of Nature (IUCN) criteria and categories. We recorded 31 tree species as the most utilized in the region. For the assessments, we provided the fundamental taxonomic information of each species, their local names, and their uses. This study provided the extent of occurrence, area of occupancy, population size and trend, description of habitats, and ecological requirements and discussion of the threats affecting each species and their habitats. We further inform conservation actions and research activities needed to ensure the future of the tree species and their sustainable uses. Overall, approximately 97% of the taxa were evaluated as threatened (41% as endangered, 31% as critically endangered, 24% as vulnerable, and 4% as least concerned). Therefore, we recommend the adoption of the risk status of the species to develop sound conservation strategies and measures for the management of flora in this inundated region.

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Section: En= Endangered B2ab (Ii III V)mentioning

confidence: 99%

Section: En= Endangered B2ab (Ii III V)mentioning

confidence: 99%

Application of IUCN Red List Criteria for Assessment of Some Savanna Trees of Nigeria, West Africa

Nodza,

Tochukwu,

Igbari

et al. 2024

Preprint

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“…In addition, an analysis of the population structure and regeneration status of woody seed oil species is a pre-requisite for designing conservation programmes and also highlights threatened and economically important species that need to be prioritised for conservation (Dutta & Devi, 2013;Maua et al, 2020). Lack of information on the population structure of woody seed oil species limits the planning of sustainable conservation and rehabilitation strategies (Lokonon et al, 2022). Against this background, this study aims to examine the population structure and regeneration status of woody seed oil species using diameter-class distributions in Ngamiland and Chobe districts.…”

Section: Introductionmentioning

confidence: 99%

Structure and Regeneration Status of Woody Seed Oil Species in Northern Botswana

Kashe,

Tsheboeng,

Kgathi

et al. 2023

Journal of Landscape Ecology

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Concerns about energy security and environmental risks have sparked interest in edible and non-edible seed oils as potential renewable feedstocks for biodiesel production. A study was conducted to investigate the population structure and regeneration status of woody seed oil species in the districts of Chobe and Ngamiland. The population structure and regeneration condition of woody seed oil species were studied in 20 × 20 m (400 m2) quadrats spaced 50 m apart along a parallel line transect. Data on the identity of all woody species, the number of all live individuals, and the diameter at breast height (DBH) of individuals with DBH > 2 cm of each woody species were collected in each quadrat. The diversity (Hʹ) and evenness (Jʹ) of woody seed oil species were 1.53, 1.42 and 0.71, and 0.85, 0.73 and 0.51 in Parakarungu, Seronga and Shorobe, respectively. Ximenia caffra was the dominant woody seed oil plant in Shorobe and Seronga, and exhibited an inverted J-shaped curve with continuous diameter classes distribution. Trichilia emetica was only found in Parakarungu, where it was the second dominant species and demonstrated excellent recruitment and regeneration. In Shorobe and Seronga, Croton megalobotrys was the second most dominant species. It had low recruitment, which was most likely due to herbivory and predation on seeds and seedlings. The least prevalent species (Sclerocarya birrea, Schinziophyton rautanenii and Guibourtia coleosperma) had no representation in the intermediate diameter-classes, which might be attributed to the selective removal in these diameter-classes. The examination of the population structure of woody seed oil species indicated variations in patterns of diameter-class distribution, indicating differences in the population dynamics of the species across the study areas. The least dominant species experienced hindered recruitment and regeneration due to herbivory and anthropogenic influences.

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Traditional Farmlands for Tree Species Conservation in Benin

Akakpo,

Padonou,

Fandohan

et al. 2023

Small-scale Forestry

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Effect of provenance on population structure and regeneration of six multiple-use tree species along Ouémé catchment in Benin: Implications for conservation

Cited by 3 publications

References 45 publications

Application of IUCN Red List Criteria for Assessment of Some Savanna Trees of Nigeria, West Africa

Application of IUCN Red List Criteria for Assessment of Some Savanna Trees of Nigeria, West Africa

Structure and Regeneration Status of Woody Seed Oil Species in Northern Botswana

Traditional Farmlands for Tree Species Conservation in Benin

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