The Spatial Pattern and Distribution of Adansonia Species in the Sahel Savanna Ecosystem of Yobe State, Nigeria

Authors

  • Yahaya Ishaya Kuku Department of Geography, Nigerian Defence Academy Kaduna, Nigeria
  • Jibril Abdullahi Edicha Department of Geography and Environmental Management, University of Abuja, Nigeria
  • Bitrus Eniyekenimi Daukere Department of Geography and Environmental Management, University of Ilorin, Nigeria
  • Jedidiah Precious Oru-bo Department of Construction Management and Engineering, University of Reading, United Kingdom

DOI:

https://doi.org/10.26740/vubeta.v2i3.39262

Keywords:

Adansonia species, Spatial distribution, Sahel savannah, Nearest neighbour, Quadrat

Abstract

The study scrutinizes the distribution, of Adansonia species in Southern part of Yobe State Nigeria. A quadrat sampling method was employed for the study and the study area was divided into twenty quadrats using the purposive sampling technique. The quadrat sizes ranges from 100 by 100 meters, 200 by 200 meters, 300 by 300 meters, 400 by 400 meters and 500 by 500 meters. Adansonia species in all 20 quadrats were counted, their species identified. A total of 791 trees were identified in the 20 quadrats out of which 775 are of the species Adansonia digitata while 16 were Adansonia kilima.  Furthermore, the nearest neighbor analysis was carried-out to establish the distribution of the said plant in the study area, the result revealed that 19 out of 20 quadrats are dispersed in terms of pattern of distribution with only quadrat 17 exhibiting a random distribution. The result further reveals that out of all the species of Adansonia in the world, only Adansonia digitata and Adansonia kilima are found in the study area, the other species namely Adansonia grandidiera, Adansonia gregorii, Adansonia madagascariensis, Adansonia perrieri, Adansonia rubrostipa, Adansonia suarezensis and Adansonia za were absent in the study area.

Author Biographies

Yahaya Ishaya Kuku, Department of Geography, Nigerian Defence Academy Kaduna, Nigeria

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Dr. Yahaya Ishaya Kuku is a serving officer of the Nigerian Army who lectures Geography in the Department of Geography Nigerian Defence Academy. He graduated with BSc Geography with second class upper division in 2008, MSc Geography with distinction in 2018 and a PhD Geography in 2023 all from the prestigious University of Abuja Nigeria. His research interest is in vegetation studies. He can be contacted at email: kukuishaya@yahoo.com

Jibril Abdullahi Edicha, Department of Geography and Environmental Management, University of Abuja, Nigeria

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Prof Jibril Abdullahi Edicha is a lecturer in the department of Geography, Faculty of Geography and Atmoshperic Science University of Abuja Nigeria. He obtained his B.sc. from the University of Abuja and his postgraduate studies at the Universities of ibadan and Abuja, Nigeria . He can be reached through jibril.edicha@uniabuja.edu.ng.

Bitrus Eniyekenimi Daukere, Department of Geography and Environmental Management, University of Ilorin, Nigeria

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Bitrus Eniyekenimi Daukere is a Ph.D. student in the Department of Geography, and Environmental Management, University of Ilorin, Nigeria. He obtained his B.Sc. from University of Ibadan and he obtained two M.Scs. in Remote Sensing and GIS, and Geography from Ahmadu Bello University, Zaria and Usmanu Danfodiyo University, Sokoto, respectively. His research interest is in land cover surveys, classification and scaling, social and cultural geography, applied spatial statistics and terrain analysis. He can be reach through dauksenies2010@gmail.com.

 

Jedidiah Precious Oru-bo, Department of Construction Management and Engineering, University of Reading, United Kingdom

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Jedidiah Oru-Bo is a PhD researcher at the Department of Construction Management and Engineering at the University of Reading, United Kingdom. He received his MSc in Sustainable and Environmental Management from Coventry University, United Kingdom. His research focuses on food system impacts and the opportunities for decarbonisation. Furthermore exploring how environmental impact assessment tools represent alternative production systems. He can be reached on j.p.oru-bo@pgr.reading.ac.uk

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2025-08-27

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[1]
I. Yahaya Kuku, E. Jibril Abdullahi, B. Eniyekenimi Daukere, and J. Precious Oru-bo, “The Spatial Pattern and Distribution of Adansonia Species in the Sahel Savanna Ecosystem of Yobe State, Nigeria”, Vokasi Unesa Bull. Eng. Technol. Appl. Sci., vol. 2, no. 3, pp. 475–488, Aug. 2025.

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