The impact of anthropogenic activities on the spatiotemporal dynamics of the forest of Dogo-Kétou has been studied in relation to climate change observed in southeastern Benin. Especially, this study has detected the changes in climate parameters in southeast Benin from 1954 to 2016 and in forestland use from 1986 to 2018. A climatic break was detected, and the annual and monthly rainfall and temperature averages, the rainfall indexes, the concentration of precipitation, the number of rainy days according to the World Meteorological Organization and the bioclimatic aridity indexes were assessed. A GIS analysis was also performed based on Landsat images from 1986, 2000 and 2018 to detect the dynamic of land use and land cover of the classified forest of Dogo-Kétou. Excel 2016, R_{x64 4.1.2}, Rclimdex₃₀₁, Khronostat_1.01 and ArcGIS were used. The rainfall series showed a break in 1969. The segment from 1954 to 1968 was a period of excess rainfall with an average of 1420.46 mm/year. The segment from 1969 to 2016 was a rainfall deficit period with a reduction of 12 to 37% of rainy days and an increase of dry days for 21.4 days/year. In this last segment, southeast Benin experienced trends of its climate towards a sub-arid and arid climate. The agglomerations and bare soil of the forest of Dogo-Kétou increased to an area almost double the size between 1986 and 2018. The tree and shrub savannas gained in space from 12.1% in 2000 to 38.9% in 2018 and the dense forest and wooded savannas regressed by 52.6% in 1986 to 36.1% in 2000 then to 4.3% of the forest area in 2018. The subequatorial climate of southeastern Benin is gradually evolving towards a dry climate. The dense forest in this area is also gradually disappearing, giving way to savannas. This transformation towards the savannas was due to anthropogenic actions whose effects were strongly accentuated by climate change in this part of Benin and West Africa.

Plantains (Musa spp) are among the most important cultivated horticultural crops in West Africa. Various varieties and cultivars are produced in Benin. This study aimed at evaluating the physical characteristics and some proximate composition of some plantain cultivars consumed in Benin. Physical parameters including weight of the bunch, number of hands and fingers, weight of hands and finger, pulp percentage and flour yield were assessed using five cultivars of plantain (Aloga, Aloga 2M, Gnivlan, Kpahissi, Orishele) and one cooking banana (Pelipita). In addition, color parameters, dry matter as well as total minerals contents were assessed for the pulp of the various cultivars. It came out that Kpahissi cultivars had heavier bunches and a lot of hands than the other cultivars while Aloga 2M had the highest weight of hands and fingers. Finger number varied from 2 to 12 among the six cultivars. The pulp percentage ranged from 51.3 to 70.71%. Kpahissi pulp was brighter but less yellow and red than the other pulps cultivars. Significant differences were observed in dry matter and total minerals contents of pulps with highest values for Pelipita pulp. This study provides baseline information on plantain diversity in terms of their physical characteristics in Benin. Results can be helpful in the choice of plantain bunches during purchasing.