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Different Densities of Adansonia digitata. L. Trees: Structure and Impact on Neighbouring Flora in Northern Ghana

Received: 28 November 2013    Accepted:     Published: 30 December 2013
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Abstract

The ecological significance of baobab trees in the Savanna ecosystem is yet to be recognized despite its numerous socio-economic importance in the area. This study was conducted at Doba to investigate the impact of basal area of baobab trees on associated plant species diversity and their aboveground biomass. Purposive sampling technique was used to identify the various baobab aggregation regimes categorized into highly-clumped, moderately-clumped and the isolated stands. A design consisting of concentric circles (zones) in addition to plot sizes of 100 m x 100 m was used. All woody species (height ≥ 1.5 m) within the 100 m x 100 m plots were enumerated and also the non-woody species within the concentric zones nested within the larger plots were enumerated using 1 m2 quadrats. All trees/shrubs characteristics were measured. Also, the woody species biomass was determined by a non-destructive method while non-woody species biomass was determined by a destructive technique. The results showed that the mean height of the isolated, moderately-clumped and the highly-clumped baobab stands were 14.2 ± 2.20 m, 11.3 ± 1.06 m and 11.5 ± 0.81 m respectively. The results also indicated that the greatest mean woody species biomass was recorded at the highly-clumped baobab sites (4539.18±715.97 kg/ha) while the least was found at the isolated baobab stands (2497.36 ± 1088.87 kg/ha). Similarly, woody species diversity at the highly-clumped sites was the highest among the three sites. The mean biomass values of the non-woody species did not vary under the various baobab stands, however, their biomass under the various concentric zones differ significantly. Also, the non-woody species diversity showed that zone B (2.07 ± 0.36) under the highly-clumped stands was the most diverse area while zone C (1.24 ± 0.24) under the moderately-clumped stands was the least diverse zone. It is therefore recommended that baobabs are a potential nurse and/or facilitative plant for some species and should be managed and conserve on the parklands to realize its fullest potential.

Published in Journal of Plant Sciences (Volume 1, Issue 4)
DOI 10.11648/j.jps.20130104.16
Page(s) 81-91
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Aboveground biomass, Baobab, Doba, Highly-clumped, Isolated, Moderately-clumped

References
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[2] Akpo, L. E. (1997) Phenological interactions between trees and herbaceous vegetation of Sahelian semi-arid Savanna. Plant Ecology. 131: 241-248.
[3] Anderson, J. M and Ingram, J. S. L. (1998) Tropical Soil Biology and Soil Fertility. A handbook of methods. 2nd ed. Wallingford: CAS publishing. Pp 24-26
[4] Baum, D. A. (1995) A systematic revision of Adansonia Bombacaceae. Annals of Missouri Botanical Gardens, 82: 440-470.
[5] Bayala, J., Teklehaimanot, Z., Ouedraogo, S. J. (2002) Millet production under pruned tree crowns in a parkland system in Burkina Faso. Agroforest Syst 54:203–214
[6] Belsky, A. J., Amundson, R. G., Duxbury, J. M., Riha, S. J., Ali, A. R. and Mwonga, S. M. (1989) The effects of trees on their physical, chemical, and biological environments in a semi-arid savanna in Kenya: Journal of Applied Ecology 26:1005–1024
[7] Blench, R (1999) Human culture and Savanna landscape of Northern Ghana. Working paper: Policies and partnerships for change
[8] Boffa, J. M. (1999) Agroforestry parklands in sub-Saharan Africa. FAO Conservation Guide 34. Rome, Italy
[9] Boukoungou, E. G., Djimde, M., Ayuk, E. T., Zoungrana, I. and Tchoundjea, Z. (1999) The market potential of parkland trees. Agroforestry Today 11, 13-15
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[11] Chadare, F. J. (2010) Baobab (Adansonia digitata. L) Food from Benin: Composition, processing and quality. Unpublished PhD thesis submitted to University of Wageningen. The Netherlands.
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[14] Gebauer, J., El-Siddiq, K. and Ebert, G, (2002) Baobab (Adansonia digitata): A review on a multipurpose tree with promising future in the Sudan. Verlag Engen Ulmer GmbH & co Stuggart.
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[17] Kangbeni, D., Kperkoumi, W., Marra, D., Martial, K., Yao, W., Fousseni, F., Komlan, B. and Koffi, A. (2014) Disturbance and Population Structure of Plant Communities in the Wildlife Reserve of Oti-Mandouri in Togo (W/Africa). Annual Research and Review in Biology. 4 (15): 2501-2516.
[18] Malimbwi, R. E., Misana, S., Monela, G. C., Jambiya, G. and Zahabu, E. (1994) Impact of charcoal extraction to the forest resources of Tanzania. Charcaol in Southern Africa (CHAPOSA)
[19] Medina, E. (1982) Physiological ecology of neotropical savanna plants. In: Huntley, B. J and Walker, B. W (eds). Ecology of Tropical Savannas. Berlin. Springer verlag. pp, B. J and Walker, B. W (eds). Ecology of Tropical Savannas. Berlin. Springer verlag. Pp 308-335. The Netherlands:
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    Abdul-Wahab Mbelayim Imoro, Victor Rex Barnes. (2013). Different Densities of Adansonia digitata. L. Trees: Structure and Impact on Neighbouring Flora in Northern Ghana. Journal of Plant Sciences, 1(4), 81-91. https://doi.org/10.11648/j.jps.20130104.16

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    ACS Style

    Abdul-Wahab Mbelayim Imoro; Victor Rex Barnes. Different Densities of Adansonia digitata. L. Trees: Structure and Impact on Neighbouring Flora in Northern Ghana. J. Plant Sci. 2013, 1(4), 81-91. doi: 10.11648/j.jps.20130104.16

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    AMA Style

    Abdul-Wahab Mbelayim Imoro, Victor Rex Barnes. Different Densities of Adansonia digitata. L. Trees: Structure and Impact on Neighbouring Flora in Northern Ghana. J Plant Sci. 2013;1(4):81-91. doi: 10.11648/j.jps.20130104.16

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  • @article{10.11648/j.jps.20130104.16,
      author = {Abdul-Wahab Mbelayim Imoro and Victor Rex Barnes},
      title = {Different Densities of Adansonia digitata. L. Trees: Structure and Impact on Neighbouring Flora in Northern Ghana},
      journal = {Journal of Plant Sciences},
      volume = {1},
      number = {4},
      pages = {81-91},
      doi = {10.11648/j.jps.20130104.16},
      url = {https://doi.org/10.11648/j.jps.20130104.16},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.jps.20130104.16},
      abstract = {The ecological significance of baobab trees in the Savanna ecosystem is yet to be recognized despite its numerous socio-economic importance in the area. This study was conducted at Doba to investigate the impact of basal area of baobab trees on associated plant species diversity and their aboveground biomass. Purposive sampling technique was used to identify the various baobab aggregation regimes categorized into highly-clumped, moderately-clumped and the isolated stands. A design consisting of concentric circles (zones) in addition to plot sizes of 100 m x 100 m was used. All woody species (height ≥ 1.5 m) within the 100 m x 100 m plots were enumerated and also the non-woody species within the concentric zones nested within the larger plots were enumerated using 1 m2 quadrats. All trees/shrubs characteristics were measured. Also, the woody species biomass was determined by a non-destructive method while non-woody species biomass was determined by a destructive technique. The results showed that the mean height of the isolated, moderately-clumped and the highly-clumped baobab stands were 14.2 ± 2.20 m, 11.3 ± 1.06 m and 11.5 ± 0.81 m respectively. The results also indicated that the greatest mean woody species biomass was recorded at the highly-clumped baobab sites (4539.18±715.97 kg/ha) while the least was found at the isolated baobab stands (2497.36 ± 1088.87 kg/ha). Similarly, woody species diversity at the highly-clumped sites was the highest among the three sites. The mean biomass values of the non-woody species did not vary under the various baobab stands, however, their biomass under the various concentric zones differ significantly. Also, the non-woody species diversity showed that zone B (2.07 ± 0.36) under the highly-clumped stands was the most diverse area while zone C (1.24 ± 0.24) under the moderately-clumped stands was the least diverse zone. It is therefore recommended that baobabs are a potential nurse and/or facilitative plant for some species and should be managed and conserve on the parklands to realize its fullest potential.},
     year = {2013}
    }
    

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  • TY  - JOUR
    T1  - Different Densities of Adansonia digitata. L. Trees: Structure and Impact on Neighbouring Flora in Northern Ghana
    AU  - Abdul-Wahab Mbelayim Imoro
    AU  - Victor Rex Barnes
    Y1  - 2013/12/30
    PY  - 2013
    N1  - https://doi.org/10.11648/j.jps.20130104.16
    DO  - 10.11648/j.jps.20130104.16
    T2  - Journal of Plant Sciences
    JF  - Journal of Plant Sciences
    JO  - Journal of Plant Sciences
    SP  - 81
    EP  - 91
    PB  - Science Publishing Group
    SN  - 2331-0731
    UR  - https://doi.org/10.11648/j.jps.20130104.16
    AB  - The ecological significance of baobab trees in the Savanna ecosystem is yet to be recognized despite its numerous socio-economic importance in the area. This study was conducted at Doba to investigate the impact of basal area of baobab trees on associated plant species diversity and their aboveground biomass. Purposive sampling technique was used to identify the various baobab aggregation regimes categorized into highly-clumped, moderately-clumped and the isolated stands. A design consisting of concentric circles (zones) in addition to plot sizes of 100 m x 100 m was used. All woody species (height ≥ 1.5 m) within the 100 m x 100 m plots were enumerated and also the non-woody species within the concentric zones nested within the larger plots were enumerated using 1 m2 quadrats. All trees/shrubs characteristics were measured. Also, the woody species biomass was determined by a non-destructive method while non-woody species biomass was determined by a destructive technique. The results showed that the mean height of the isolated, moderately-clumped and the highly-clumped baobab stands were 14.2 ± 2.20 m, 11.3 ± 1.06 m and 11.5 ± 0.81 m respectively. The results also indicated that the greatest mean woody species biomass was recorded at the highly-clumped baobab sites (4539.18±715.97 kg/ha) while the least was found at the isolated baobab stands (2497.36 ± 1088.87 kg/ha). Similarly, woody species diversity at the highly-clumped sites was the highest among the three sites. The mean biomass values of the non-woody species did not vary under the various baobab stands, however, their biomass under the various concentric zones differ significantly. Also, the non-woody species diversity showed that zone B (2.07 ± 0.36) under the highly-clumped stands was the most diverse area while zone C (1.24 ± 0.24) under the moderately-clumped stands was the least diverse zone. It is therefore recommended that baobabs are a potential nurse and/or facilitative plant for some species and should be managed and conserve on the parklands to realize its fullest potential.
    VL  - 1
    IS  - 4
    ER  - 

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Author Information
  • University for Development Studies, Faculty of Applied Sciences, Department of Applied Biology, Box 24, Navrongo- Ghana

  • Kwame Nkrumah University of Science and Technology, Faculty of Renewable Natural Resources, Department of Agroforestry, Univ. Post office, Kumasi-Ghana

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