Forestry, Global and Planetary Change, Ecological Modeling, Nature and Landscape Conservation
6
Scopus Publications
505
Scholar Citations
12
Scholar h-index
15
Scholar i10-index
Scopus Publications
Assessment of Carbon Sequestration in Borgu Sector of Kainji Lake National Park, North-Central Nigeria Adesoji Akinwumi Adeyemi, Folasade Esther Aderibigbe Forestist, 2024 Trees species-based carbon-stock estimates are rare in Nigeria. Therefore, we investigated individual trees’ abilities using non-destructive approach with systematic sampling technique. One hundred circular plots were laid, using pre-classified Landsat-OLI/TC image of Borgu Sector. Plot centres were located and marked with global positioning system receiver. The main plots with 12.61 m radius (500 m2 ) were subdivided into subplots of 5.64 m radius (100 m2 ). Trees with diameter at breast height (Dbh) ≥10 cm were measured in the main plots, while trees with ≥5 but <10 cm Dbh were considered in the subplots. Species identification and measurements were executed. Core samples were collected at breast height using 5 mm increment borer. Core samples were oven-dried at 70°C to constant weights. Wood densities were then calculated as oven-dried weights/fresh volumes. Above-ground carbon were determined as 50%-biomass. Soil samples were diagonally collected at three points within sample plots at two depths, using core sampler and soil auger for 600 samples. Samples were air-dried, ground and sieved through a 2 mm sieve. Core sampler and rings were used for measuring bulk density. Samples were oven-dried for 24 hours at 105°C. Soil organic matter was determined by Fe2SO4 titration of an acid-dichromate digestion, and organic carbon concentration was calculated. Tree carbon data were analyzed using allometric equations involving wood density, Dbh and tree-height and ANOVA. Thirty-five tree species in 16 families were encountered. Detarium microcarpum was the most frequently occurring (18.8%). Tree species richness, diversity and importance value indices were 2.852, 4.779, and 41.76 ± 35.41, respectively. Vitellaria paradoxa and Afzelia africana were the only vulnerable species identified. Trees with larger-Dbh sequestered more carbon. Consequently, Adansonia digitata with a mean Dbh of 111.4 ± 0.00 cm sequestered the highest amount (2.8 tons/ha), which were significantly different from others (p < .05). Securidaca longipendiculata had the least carbon stock (0.001 ton/ha). Meanwhile, soil carbon were higher in plots dominated by Acacia kosiensis, V. paradoxa, and Grewia mollis at 0.006758 ton/ha, averagely 0.073 ± 0.0021 ton/ha of carbon-stock and CO2 of 0.271 ± 0.010 ton/ha sequestered, respectively. Cite this article as: Adeyemi, A. A., & Aderibigbe, F. E. (2024). Assessment of carbon sequestration in borgu sector of kainji lake national park, north-central Nigeria. Forestist, 74(3), 298-307.
Nutritional composition of cassava (Manihot esculenta Crant) peel products Livestock Research for Rural Development, 2022
Site quality assessment and allometric models for tree species in the Oban Forest, Nigeria Adesoji A. Adeyemi Journal of Sustainable Forestry, 2016 The suitability of site form (SF) methods for evaluating site quality was investigated. Systematic sampling techniques were used for plot location in four sites (Aking, Ekang, Erokut, and Ekuri) within the Oban Forest of Nigeria. Four 2-km-long transects/sites were sampled, totaling 16 transects. Five 0.25-ha plots were alternately laid along each transect, making 80 plots. All trees with diameter at breast height (DBH) ≥ 10 cm were measured for height and diameter at the merchantable limit, middle, and base. Soil samples were collected at 0–15 and 15–30 cm depths in each plot, then analyzed using standard laboratory procedures. Site forms were computed using an index diameter of 25 cm. Data were analyzed using descriptive statistics, correlation analyses, and regression models. Ekuri had the highest stand density (173.0 ± 51.0 stems/ha), Erokut had the lowest (143.0 ± 39.0 stems/ha). Ekang had the highest stem volume (3,847.14 ± 2.16 m3/ha), while Erokut had the lowest (2,127.71 ± 1,382 m3/ha). The most productive site was Ekang (SF = 26.52 m), while Erokut was the least productive site (SF = 21.70 m). Stem volume (SV) has significantly positive correlations with soil organic matter, calcium, and silt. The best height-diameter model was logarithmic (R2 = .51; RMSE = 4.462). The most suitable SV model was polynomial (R2 = .85; RMSE = 2.207).
Local depletion of two larger Duikers in the Oban Hills Region, Nigeria Saka O. Jimoh, Emmanuel T. Ikyaagba, Abideen A. Alarape, Adesoji A. Adeyemi, Matthias Waltert African Journal of Ecology, 2013 Across West and Central Africa, duikers are important for trade and consumption; their populations are expected to become depleted. Reliable data on their status are scanty in Nigeria. We assessed duiker populations in the Oban Sector of Cross River National Park through diurnal and nocturnal surveys along 32 transects of 2 km each. After 508-km survey effort, only Ogilby's duiker (Cephalophus ogilbyi) and blue duiker (Philantomba monticola) were recorded. Using habitat as a covariate in modelling detection probability in DISTANCE 6.0, we estimated densities for the blue duiker ranging from 15.5 (95% CI: 7.8–30.9) in the core, 5.8 (CI: 2.6–12.9) in the buffer and 0.9 (CI: 0.09–10.1) km² in farm fallow to no duikers in the plantation. For Ogilby's duiker, densities ranged from 1.6 (95% CI: 0.7–3.7) km² in the core, 2.0 (CI: 0.8–5.1) in buffer to no duikers in farm fallow and plantation. The apparent absence of yellow-backed and Bay duikers may indicate local depletion. We call on all stakeholders to rise up to the challenge of rescuing this biological hotspot in Nigeria from further degradation and species loss through improved funding for well-equipped field staff and institutionalized community wildlife management. Resume Dans toute l'Afrique de l'Ouest et l'Afrique centrale, les cephalophes sont importants pour le commerce et la consommation, et l'on s'attend a ce que leurs populations s'effondrent. Les informations fiables sur leur statut sont tres rudimentaires au Nigeria. Nous avons evalue les populations de cephalophes dans le secteur d'Oban du Cross River national Park lors d'etudes diurnes et nocturnes le long de 32 transects de 2 km chacun. Apres une etude portant sur 508 km, seuls le cephalophe d'Ogilby (Cephalophus ogilbyi) et le cephalophe bleu (Philantomba monticola) furent releves. En utilisant l'habitat comme covariante en modelisant la probabilite de detection avec DISTANCE 6.0, nous avons estime pour le cephalophe bleu des densites allant de 15.5 (95% d'intervalle de confiance, IC: 7.8–30.9) au centre, et de 5.8 (IC: 2.6–12.9) dans la zone tampon, a 0.9 (IC: 0.09–10.1) km−2 dans les zones agricoles en jacheres et aucun cephalophe dans la plantation. Pour le cephalophe d'Ogilby, les densites allaient de 1.6 (95% IC: 0.7–3.7) km−2 au centre, a 2.0 (IC: 0.8–5.1) dans la zone tampon et aucun dans les jacheres et la plantation. L'absence apparente de cephalophes a dos jaune et a bande dorsale noire pourrait indiquer un epuisement local. Nous en appelons a toutes les parties prenantes pour qu'elles relevent le defi et sauvent ce haut-lieu biologique nigerian de toute nouvelle degradation et de toute nouvelle perte d'especes grâce a un meilleur financement d'un personnel de terrain bien equipe et a l'institutionnalisation de la gestion communautaire de la faune.
RECENT SCHOLAR PUBLICATIONS
Modelling tree species biomass and carbon stock in a mixed tropical forest of Southern Nigeria AA Adeyemi Journal of Research in Forestry, Wildlife and Environment 18 (1), 53–71-53–71 , 2026 2026
Forest structure analysis and yield models for tree species in Okeluse Forest Reserve, Ose LGA, Ondo state, Nigeria AA Adeyemi, SO Omotosho, SA Oyeneye Journal of Agriculture and Environment 21 (1), 51-66 , 2025 2025
Assessment of Carbon Sequestration in Borgu Sector of Kainji Lake National Park, North-Central Nigeria AA Adeyemi, FE Aderibigbe Forestist 74 (3), 298-307 , 2024 2024 Citations: 4
Impacts of Vegetation Losses over Time on Land Surface Temperatures in Borgu Sector of Kainji Lake National Park, Nigeria AA Adeyemi, KO Atere Tanzania Journal of Forestry and Nature Conservation 92 (1), 50-63 , 2023 2023
Conservation Areas Monitoring at Ubima and Elele Estates of Siat Nigeria Limited AA Adeyemi, FA Egwumah Siat Nigeria Limited, Ubima Estate, Km 6, Elele-Owerri Road, Ikwere LGA … , 2022 2022
Early Growth Performance of Parkia biglobosa (Jacq. R. Br.) Benth under Different Growth Conditions AA Adeyemi, MO Kelani Forestry Association of Nigeria , 2022 2022
EVALUATION OF RESPONSES OF Tetrapleura tetraptera (Schum. and Thonn.) Taub. TO VARYING GROWTH CONDITIONS AA Adeyemi, SA Akanbi Journal of Forestry Research and Management 19 (2), 125-139 , 2022 2022
EVALUATION OF FOREST-COVER DYNAMICS AND ITS DRIVERS IN OKELUSE FOREST RESERVE, ONDO STATE, NIGERIA AA Adeyemi, GE Olowo Journal of Agriculture and Environment 18 (1), 107-125 , 2022 2022 Citations: 3
Evaluation of Land-Use and Land-Cover Changes in Oba Hills Forest Reserve, Osun State, Nigeria AA Adeyemi, MO Ayinde Forestist 72 (2), 137-148 , 2022 2022 Citations: 12
Land-use/Land-cover Changes and Deforestation in Effan Forest Reserve, Kwara State, Nigeria AA Adeyemi, FM Owolabi Preprints , 2021 2021 Citations: 1
High Conservation Value and High Carbon Stock Approach Assessment of De United Foods Industries (DUFIL) Limited Proposed Oil Palm Development, Edo State, Nigeria ND Cobbina, A Yevide, A Bafoe, E Danquah, A Adeyemi, A Afolabi, ... Proforest, HCV Network , 2021 2021
EVALUATION OF LAND-USE AND LAND-COVER CHANGES CUM FOREST DEGRADATION IN SHASHA FOREST RESERVE, OSUN STATE, NIGERIA USING REMOTE SENSING AA Adeyemi, HA Oyelele Tanzania Journal of Forestry and Nature Conservation 90 (2), 27-40 , 2021 2021 Citations: 8
Spatiotemporal analysis of land-use and land-cover changes in Kainji Lake National Park, Nigeria AA Adeyemi, TM Ibrahim Forestist 70 (2), 105-115 , 2020 2020 Citations: 14
Tree Structural Diversity and Yield Prediction Models for Tree Species in Old Oyo National Park, Nigeria AA Adeyemi, HT Taofeek American Journal of Plant Biology 5 (2), 11-20 , 2020 2020 Citations: 6
ASSESSMENT OF LAND-COVER CHANGES AND CARBON SEQUESTRATION POTENTIALS OF TREE SPECIES IN J4 SECTION OF OMO FOREST RESERVE, OGUN STATE, NIGERIA AA Adeyemi, SO Adeleke Ife Journal of Science 22 (1), 137-152 , 2020 2020 Citations: 14
Effectiveness of Alternative Conservation Means in Protecting the Osun-osogbo Sacred Grove in South-West, Nigeria AA Adeyemi, TH Oyinloye Plant 8 (1), 1-9 , 2020 2020 Citations: 9
DEVELOPMENT OF REGRESSION MODELS FOR PREDICTING YIELD OF Triplochiton scleroxylon (K. Schum) STAND IN ONIGAMBARI FOREST RESERVE, OYO STATE, NIGERIA AA Adeyemi, FA Moshood Journal of Research in Forestry, Wildlife & Environment 11 (4), 88-99 , 2019 2019 Citations: 7
High conservation values (HCVs) and conservation areas monitoring in Obaretin, Ologbo, Cowan and Sakponba Estates AA Adeyemi, DI Edet Presco Plc., Edo State, Nigeria , 2018 2018
Evaluation of technical efficiency of sawmills in Udu Local Government Area of Delta State, Nigeria OA Ohwo, AA Adeyemi, E Ighofose African Journal of Agriculture Technology and Environment 7 (1), 99-108 , 2018 2018 Citations: 6
STATUS AND DISTRIBUTION OF DUIKER SPECIES IN OKOMU NATIONAL PARK , NIGERIA AA Adeyemi, DI Edet, AE Okoronkwo Journal of Forestry Research and Management 15 (2), 136-148 , 2018 2018 Citations: 2
MOST CITED SCHOLAR PUBLICATIONS
The role of traditional laws and taboos in wildlife conservation in the Oban Hill Sector of Cross River National Park (CRNP), Nigeria SO Jimoh, ET Ikyaagba, AA Alarape, EE Obioha, AA Adeyemi Journal of human ecology 39 (3), 209-219 , 2012 2012 Citations: 117
Forest Structure Analysis in the oban division of Cross River national park, Nigeria SO Jimoh, PO Adesoye, AA Adeyemi, ET Ikyaagba Journal of Agricultural Science and Technology. B 2 (5B), 510 , 2012 2012 Citations: 39
Tree structural and species diversities in Okwangwo forest, cross river state, Nigeria AA Adeyemi, AE Ibe, FC Okedimma Journal of Research in Forestry, Wildlife and Environment 7 (2), 36-53 , 2015 2015 Citations: 34
Tree slenderness coefficient and percent canopy cover in Oban Group Forest, Nigeria AA Adeyemi, PO Adesoye Journal of Natural Sciences Research 6 (4), 9-17 , 2016 2016 Citations: 32
Local depletion of two larger D uikers in the O ban H ills R egion, N igeria SO Jimoh, ET Ikyaagba, AA Alarape, AA Adeyemi, M Waltert African Journal of Ecology 51 (2), 228-234 , 2013 2013 Citations: 29
Assessment of tree diversities in Oban division of the Cross River national park (CRNP), Nigeria AA Adeyemi, SO Jimoh, PO Adesoye Journal of Agriculture, Forestry and the Social Sciences (JOAFSS) 11 (1) , 2013 2013 Citations: 22
Site quality assessment and allometric models for tree species in the Oban Forest, Nigeria AA Adeyemi Journal of Sustainable Forestry 35 (4), 280-298 , 2016 2016 Citations: 18
TREE SLENDERNESS COEFFICIENTS AND CROWN RATIO MODELS FOR Gmelina arborea (ROXB) STAND IN AFI RIVER FOREST RESERVE, CROSS RIVER STATE, NIGERIA AA Adeyemi, NA Ugo-Mbonu Nigerian Journal of Agriculture, Food and Environment 13 (1), 226-233 , 2017 2017 Citations: 16
PATTERNS OF FIREWOOD EXPLOITATION AND UTILIZATION IN PERIURBAN AND RURAL AREAS OF OWERRI ZONE IN SOUTHERN NIGERIA AA Adeyemi, AE Ibe Nigerian Journal of Agriculture, Food and Environment 10 (3), 113-119 , 2014 2014 Citations: 15
Spatiotemporal analysis of land-use and land-cover changes in Kainji Lake National Park, Nigeria AA Adeyemi, TM Ibrahim Forestist 70 (2), 105-115 , 2020 2020 Citations: 14
ASSESSMENT OF LAND-COVER CHANGES AND CARBON SEQUESTRATION POTENTIALS OF TREE SPECIES IN J4 SECTION OF OMO FOREST RESERVE, OGUN STATE, NIGERIA AA Adeyemi, SO Adeleke Ife Journal of Science 22 (1), 137-152 , 2020 2020 Citations: 14
Quantitative analyses of honey samples from four different sources in Abia state, Nigeria AE Ibe, GN Onuoha, AA Adeyemi, DK Madukwe, JO Udobi International Journal of Natural and Applied Sciences 9 (2), 107-116 , 2013 2013 Citations: 13
Evaluation of Land-Use and Land-Cover Changes in Oba Hills Forest Reserve, Osun State, Nigeria AA Adeyemi, MO Ayinde Forestist 72 (2), 137-148 , 2022 2022 Citations: 12
Crown ratio models for tropical rainforests species in Oban division of the cross river national park, Nigeria AA Adeyemi, SO Jimoh, PO Adesoye Journal of Agriculture and Social Research (JASR) 13 (1), 63-76 , 2013 2013 Citations: 11
The Role of Urban and Peri-Urban Agriculture in Enhancing Food Security and Climate Change Resilience in East and West African Cities S Lwasa, B Wahab, F Mugagga, D Simon, C Griffith, D Mukungu, ... START , 2011 2011 Citations: 11
Effectiveness of Alternative Conservation Means in Protecting the Osun-osogbo Sacred Grove in South-West, Nigeria AA Adeyemi, TH Oyinloye Plant 8 (1), 1-9 , 2020 2020 Citations: 9
Price transmission and market integration of sawnwood of Poga oleosa (Pierre) in Delta State, Nigeria OA Ohwo, AA Adeyemi Nigerian Journal of Agriculture, Food and Environment 11 (3), 114-122 , 2015 2015 Citations: 9
EVALUATION OF LAND-USE AND LAND-COVER CHANGES CUM FOREST DEGRADATION IN SHASHA FOREST RESERVE, OSUN STATE, NIGERIA USING REMOTE SENSING AA Adeyemi, HA Oyelele Tanzania Journal of Forestry and Nature Conservation 90 (2), 27-40 , 2021 2021 Citations: 8
TREE HEIGHT - DIAMETER AND YIELD FUNCTIONS FOR Gmelina arborea (ROXB.) STAND IN EDONDON GMELI N A PLANTATION, CROSS RIVER STATE, NIGERIA AA Adeyemi, OC Ukaegbu Journal of Research in Forestry, Wildlife & Environment 8 (2), 14-28 , 2016 2016 Citations: 8
DEVELOPMENT OF REGRESSION MODELS FOR PREDICTING YIELD OF Triplochiton scleroxylon (K. Schum) STAND IN ONIGAMBARI FOREST RESERVE, OYO STATE, NIGERIA AA Adeyemi, FA Moshood Journal of Research in Forestry, Wildlife & Environment 11 (4), 88-99 , 2019 2019 Citations: 7
