Impacts of land use types on spatial patterns and neighbourhood distance of the agroforestry palm Borassus aethiopum Mart. in two climatic regions in Benin, West Africa

Salako, Kolawolé Valère; Kénou, Christel; Daïnou, Kasso; Assogbadjo, Achille Ephrem; Kakaï, Romain Glèlè

doi:10.1007/s10457-018-0205-y

Cited by 16 publications

(16 citation statements)

References 34 publications

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“…In (Salako et al 2018a) and is not evenly distributed as part of the matrix as is the case with the other species mentioned above.…”

Section: Population Description Vegetationmentioning

confidence: 98%

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Borassus aethiopum Mart. (Arecaceae) in Limpopo province with a key to South African palms

Siebert

Struwig

2019

Bothalia

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Background: Borassus aethiopum Mart. commonly occurs in many parts of tropical Africa and in South Africa it is restricted to the Leydsdorp region where it is conspicuous along the Selati River. The species is sometimes considered to have been introduced to South Africa due to its disjunct distribution. It has remained poorly studied and little is known about the local populations of this palm.Objectives: This study provides a descriptive treatment and documents the population structure of B. aethiopum in this area, and presents a key to the six indigenous palm species of South Africa.Methods: All accessible populations were surveyed and documented, and eight transects were randomly placed to gather data on size class distributions. B. aethiopum and other indigenous palm species were compared morphologically.Results: The population structure analyses of B. aethiopum revealed a monotonic decline, but the permutation index suggested that the species is prone to recruitment events. This is supported by patches that are dominated by specific height classes. Leaf shape and size, fruit size and geographical distribution were the diagnostic characters most useful to recognize the species of South African indigenous palms.Conclusion: Borassus aethiopum is distinguishable from other South African palms based on stem, leaf and fruit characters. It is considered as indigenous to Granite Lowveld as the palm is part of the natural vegetation and is characterized by a size class distribution reflecting a stable population.

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“…In (Salako et al 2018a) and is not evenly distributed as part of the matrix as is the case with the other species mentioned above.…”

Section: Population Description Vegetationmentioning

confidence: 98%

“…Therefore, it may be that Borassus and people share a habitat preference. Both cohabitation and the socio-economic value of the palm (Salako et al 2018a) may be an explanation for current Borassus distributions; therefore, the interpretation of past historical plant movements based on current distributions is presented here with caution.…”

Section: Dispersalmentioning

confidence: 99%

Borassus aethiopum Mart. (Arecaceae) in Limpopo province with a key to South African palms

Siebert

Struwig

2019

Bothalia

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“…According to several authors (Goreaud, 2000;Dungan, 2002;Jesel, 2005;Kiki, 2005;Dohou, 2006;Toko Imorou, 2013;Karimou, 2015;Goussanou et al, 2017;Salako et al, 2018), the spatial distribution pattern of species can be explained by several factors including the maximum distance observed between the nearest neighbors, the mode of dispersion of the diaspores and especially the human disturbed. The results of study done by Salako et al (2018) revealed that in natural undisturbed stands such as those found in protected areas, the Borassus aethiopum spatial pattern is often controlled by complex interactions of several ecological factors (e.g. water availability, soil fertility and patchiness, termite mounds, dispersal activities, and density-dependent and distancedependent mortality).…”

Section: Spatial Distributionmentioning

confidence: 99%

Spatial distribution and ecological niche modelling of <i>Triplochiton scleroxylon</i> K. Schum., in the Guineo-Congolese region of Benin (West Africa)

Imorou¹

2020

Int. J. Bio. Chem. Sci

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Triplochiton sleroxylon (samba) is a West and Central African forest species of high socio-economic value which is increasingly threatened by anthropogenic pressures from various sources. The aim of this study was to determine the impact of climate change on the spatial distribution of Triplochiton sleroxylon in the Guineo-Congolese region of Benin. All of 2311 occurrence data of this species were combined with current and future climate variables in the Maxent program under RCP scenarios 4.5 and 8.5 by 2055. Analysis of the spatial pattern of Triplochiton scleroxylon revealed an aggregative distribution between 1m and 7 m distance. But for a distance between 0 and 1 m and more than 7 m, the spatial pattern revealed a random spatial distribution. Under current climatic conditions, 45.17% of the study area of the Guineo-Congolese region in Benin and 61.69% of the one of protected areas are currently very suitable for the cultivation and conservation of samba. Projections to 2055 indicate a significant increase in the area of these habitats for the two scenarios used. These results show that the current and future climatic conditions of the Guineo-Congolese region in Benin remain favourable for the cultivation and conservation of this species. Unfortunately, outside protected areas, these favourable habitats are occupied by settlements and fields. Taking these results into account could effectively contribute to the sustainable conservation of this species in Benin. © 2020 International Formulae Group. All rights reserved. Keywords: Climate change, Maxent program, niche modelling, aggregative distribution, Triplochiton scleroxylon, Benin

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“…These findings show that the impacts of land use type are clearly unpredictable even for the same species, and that this may be context dependent. In addition, interesting information on population status can be gained from the analysis of spatial arrangement of a tree in relation to its conspecific and heterospecific individuals, especially in terms of the interaction and spacing (Salako et al, 2019). Spatial pattern concerns the past, present and the future conditions of a species (Law et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…(Abdourhamane et al, 2017), and Borassus aethiopum Mart. (Salako et al, 2019), and baobab tree association with human settlements (Duvall, 2007).…”

Section: Introductionmentioning

confidence: 99%

Does land use type impact the demographic and spatial structures of Adansonia digitata L. in the Pendjari Biosphere Reserve in Northern Benin?

et al. 2020

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Changes in land use type (LUT) are a major driver of biodiversity loss and species decline. Responses to changes in LUT are species-specific, which may in turn be context-dependent. Understanding such responses is essential for the management of socio-economically important wild tree species. The baobab, Adansonia digitata L., is an important traditional agroforestry tree species in Sub-Saharan Africa. This study assesses how LUT affects the demographic and spatial structure of baobab stands. Using data from a census and mapping of baobab trees in 12 plots of 250 m × 250 m each, the study compared baobab tree density, total height and diameter, diameter size-class distribution (SCD), stand stability, and spatial relationships in a strictly protected area (national park), a buffer zone and farmlands (Matéri and Boukombé) in the Pendjari Biosphere Reserve in Benin. The results show that the highest young and adult tree densities are in farmlands (particularly in Matéri), followed by the buffer zone and the national park. No significant differences in tree diameter and total height of baobab trees were found among the different LUT. The SCD had a reverse J-shape with a better negative slope and population stability metrics in farmlands (particularly in Matéri) but a flattened slope in the buffer zone. The spatial distributions of juvenile and adult baobab trees were random, and independent of each other. The spatial distribution of juvenile and adult baobabs was also independent of the other tree species, irrespective of LUT. It was concluded that baobab conservation is better in farmlands than in the national park but that the difference between park and farmlands may be context-dependent, probably linked to local environmental conditions, the socio-ecological context and interactions with baobab trees.

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Impacts of land use types on spatial patterns and neighbourhood distance of the agroforestry palm Borassus aethiopum Mart. in two climatic regions in Benin, West Africa

Cited by 16 publications

References 34 publications

Borassus aethiopum Mart. (Arecaceae) in Limpopo province with a key to South African palms

Borassus aethiopum Mart. (Arecaceae) in Limpopo province with a key to South African palms

Spatial distribution and ecological niche modelling of <i>Triplochiton scleroxylon</i> K. Schum., in the Guineo-Congolese region of Benin (West Africa)

Does land use type impact the demographic and spatial structures of Adansonia digitata L. in the Pendjari Biosphere Reserve in Northern Benin?

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