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Dendrometric structure and spatial distribution of Pterocarpus erinaceus Poir. in three savannah types stands in Côte d'Ivoire.

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Title: Dendrometric structure and spatial distribution of Pterocarpus erinaceus Poir. in three savannah types stands in Côte d'Ivoire.
Authors: Koffi, Kobenan Alexis1 (AUTHOR) koffialexis11@gmail.com, Koffi, Kouamé Guillaume1 (AUTHOR), Kouonon, Léonie-Clémence1 (AUTHOR), Sié, Raoul Sylvère1 (AUTHOR)
Source: Canadian Journal of Forest Research. 4/8/2026, Vol. 56, p1-13. 13p.
Subject Terms: *Anthropogenic effects on nature, *Savanna ecology, *Soil fertility, *Conservation projects (Natural resources), *Trees, Demographic characteristics, Spatial arrangement, Tree size
Geographic Terms: West Africa, Côte d'Ivoire
Abstract: In the savannahs of West Africa, the availability of species with high socio-economic value, such as Pterocarpus erinaceus, depends on ecological characteristics and anthropogenic activities. This study examines the abundance, demographic structure, and spatial organisation of P. erinaceus in different environments. A set of data was collected, including eco-edaphic and dendrometric parameters, and GPS coordinates. Site degradation levels were qualitatively inferred from field observations and site conservation status. Abundance was evaluated using regeneration density and the density of trees with DBH (diameter at breast height) > 5 cm. Individuals were grouped into 5 cm DBH classes to analyse demographic structure using ecological indices. Spatial organisation was studied using univariate (g11(r)) and bivariate (O12(r)) spatial functions, distinguishing juveniles (5 < DBH < 10 cm), non-exploitable adults (10 ≤ DBH < 35 cm), and exploitable adults (DBH ≥ 35 cm). Results show that low anthropogenic pressure and favourable environmental conditions promote high abundance and stable demographic structures, marked by active recruitment. Conversely, disturbances on poor soils limit regeneration and recruitment. The interaction between soil infertility, livestock pressure, and human activity causes population instability and hampers sustainability. The study highlights the importance of incorporating local eco-edaphic contexts into adaptive conservation strategies considering spatial and demographic dynamics. [ABSTRACT FROM AUTHOR]
Copyright of Canadian Journal of Forest Research is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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PubType: Academic Journal
PubTypeId: academicJournal
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– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In the savannahs of West Africa, the availability of species with high socio-economic value, such as Pterocarpus erinaceus, depends on ecological characteristics and anthropogenic activities. This study examines the abundance, demographic structure, and spatial organisation of P. erinaceus in different environments. A set of data was collected, including eco-edaphic and dendrometric parameters, and GPS coordinates. Site degradation levels were qualitatively inferred from field observations and site conservation status. Abundance was evaluated using regeneration density and the density of trees with DBH (diameter at breast height) &gt; 5 cm. Individuals were grouped into 5 cm DBH classes to analyse demographic structure using ecological indices. Spatial organisation was studied using univariate (g11(r)) and bivariate (O12(r)) spatial functions, distinguishing juveniles (5 &lt; DBH &lt; 10 cm), non-exploitable adults (10 ≤ DBH &lt; 35 cm), and exploitable adults (DBH ≥ 35 cm). Results show that low anthropogenic pressure and favourable environmental conditions promote high abundance and stable demographic structures, marked by active recruitment. Conversely, disturbances on poor soils limit regeneration and recruitment. The interaction between soil infertility, livestock pressure, and human activity causes population instability and hampers sustainability. The study highlights the importance of incorporating local eco-edaphic contexts into adaptive conservation strategies considering spatial and demographic dynamics. [ABSTRACT FROM AUTHOR]
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  Data: &lt;i&gt;Copyright of Canadian Journal of Forest Research is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites without the copyright holder&#39;s express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.&lt;/i&gt; (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1139/cjfr-2025-0232
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 13
        StartPage: 1
    Subjects:
      – SubjectFull: Anthropogenic effects on nature
        Type: general
      – SubjectFull: Savanna ecology
        Type: general
      – SubjectFull: Soil fertility
        Type: general
      – SubjectFull: Conservation projects (Natural resources)
        Type: general
      – SubjectFull: Trees
        Type: general
      – SubjectFull: Demographic characteristics
        Type: general
      – SubjectFull: Spatial arrangement
        Type: general
      – SubjectFull: Tree size
        Type: general
      – SubjectFull: West Africa
        Type: general
      – SubjectFull: Côte d'Ivoire
        Type: general
    Titles:
      – TitleFull: Dendrometric structure and spatial distribution of Pterocarpus erinaceus Poir. in three savannah types stands in Côte d'Ivoire.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Koffi, Kobenan Alexis
      – PersonEntity:
          Name:
            NameFull: Koffi, Kouamé Guillaume
      – PersonEntity:
          Name:
            NameFull: Kouonon, Léonie-Clémence
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            NameFull: Sié, Raoul Sylvère
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            – D: 08
              M: 04
              Text: 4/8/2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 00455067
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              Value: 56
          Titles:
            – TitleFull: Canadian Journal of Forest Research
              Type: main
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