Spatial structure of ectomycorrhizal trees in wooded savannas of Guineo-Sudanian ecozone in West Africa

Houdanon R. D., . and Tchan I. K., . and Laourou G. A., . and Codjia J. E. I., . and Badou S. A., . and Aignon L. H., . and Boni S., . and Yorou N. S., . Spatial structure of ectomycorrhizal trees in wooded savannas of Guineo-Sudanian ecozone in West Africa. pp. 1-11. ISSN 0128-1283

The Guineo-Sudanian and Sudanian zones are home to predominantly ectomycorrhizal (EcM) plant communities dominated by members of the families Fabaceae (subfamily Ceasalpinioidae) Phyllanthaceae and Dipterocarpaceae. Numerous studies have shown that the aggregation of EcM trees is facilitated in part by the shared mycelial networks of EcM fungi. Mycelial networks involving mature trees would thus directly affect the survival of the seedlings of EcM trees and thereby the spatial structuring of the trees. In this study we investigated the structure and spatial interactions of three vegetation types dominated by different EcM trees namely Isoberlinia doka I. tomentosa and Uapaca togoensis. Three 50 m 50 m plots were installed for each vegetation type. All EcM trees present in each plot were counted for estimation of density. Ripleys second order function K was used to estimate the spatial structure of EcMs trees. Spatial distribution of trees differed between species. Repulsion occurred at scales of 1 to 5 m between the different EcM trees species. By sharing nutrient through mycelial network repulsion mechanisms observed during interaction between plants should have been cancelled but this was not observed in this study.

Full text available from: Official URL: https://info.frim.gov.my/infocenter_applications/j...

Abstract

The Guineo-Sudanian and Sudanian zones are home to predominantly ectomycorrhizal (EcM) plant communities dominated by members of the families Fabaceae (subfamily Ceasalpinioidae) Phyllanthaceae and Dipterocarpaceae. Numerous studies have shown that the aggregation of EcM trees is facilitated in part by the shared mycelial networks of EcM fungi. Mycelial networks involving mature trees would thus directly affect the survival of the seedlings of EcM trees and thereby the spatial structuring of the trees. In this study we investigated the structure and spatial interactions of three vegetation types dominated by different EcM trees namely Isoberlinia doka I. tomentosa and Uapaca togoensis. Three 50 m 50 m plots were installed for each vegetation type. All EcM trees present in each plot were counted for estimation of density. Ripleys second order function K was used to estimate the spatial structure of EcMs trees. Spatial distribution of trees differed between species. Repulsion occurred at scales of 1 to 5 m between the different EcM trees species. By sharing nutrient through mycelial network repulsion mechanisms observed during interaction between plants should have been cancelled but this was not observed in this study.

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Item Type:	Article
AGROVOC Term:	Fabaceae
AGROVOC Term:	Dipterocarpaceae
AGROVOC Term:	Phyllanthus
AGROVOC Term:	Forest trees
AGROVOC Term:	Spatial distribution
AGROVOC Term:	Savannas
AGROVOC Term:	Vegetation types
AGROVOC Term:	Plantlets (seedlings)
AGROVOC Term:	Plant structure
AGROVOC Term:	Species diversity
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:54
URI:	http://webagris.upm.edu.my/id/eprint/8188

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