Characterizing spatial structure of Abies marocana forest through point pattern analysis

  1. Mariem Ben-Said 1
  2. Abdelilah Ghallab 2
  3. Hajar Lamrhari 1
  4. José Antonio Carreira 3
  5. Juan Carlos Linares 4
  6. Lahcen Taïqui 1
  1. 1 Abdelmalek Essaâdi University
    info

    Abdelmalek Essaâdi University

    Tetuán, Marruecos

    ROR https://ror.org/03c4shz64

  2. 2 Direction Régionale des Eaux et Forêts et de la Lutte Contre la Désertification du Rif
  3. 3 Universidad de Jaén
    info

    Universidad de Jaén

    Jaén, España

    ROR https://ror.org/0122p5f64

  4. 4 Universidad Pablo de Olavide
    info

    Universidad Pablo de Olavide

    Sevilla, España

    ROR https://ror.org/02z749649

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Revue:
Forest systems

ISSN: 2171-5068

Année de publication: 2020

Volumen: 29

Número: 2

Pages: 134-146

Type: Article

DOI: 10.5424/FS/2020292-16754 DIALNET GOOGLE SCHOLAR lock_openDialnet editor

D'autres publications dans: Forest systems

Objectifs de Développement Durable

Résumé

Aim of study: Understanding small-scale patterns caused by stochastic factors or community interactions driving forest structure and diversity of Moroccan fir Abies marocana Trab. Area of study: Talassemtane fir forest, Talassemtane National Park, Rif Mountains, northern Morocco. Material and methods: Eight plots representative of the structural variability of A. marocana forests were selected, and all tree individuals with diameter at breast height (dbh) ≥2 cm were mapped and measured. We performed four types of spatial point pattern analyses: (1) Univariate analyses to explore the overall trees spatial pattern, (2) bivariate analyses to assess the spatial relationship between juveniles and A. marocana adults, (3) correlation between tree sizes (dbh) and distance between points pairs using the univariate mark correlation function, and (4) random labeling analyses between dominant and suppressed Moroccan fir individuals to assess competition patterns. Main results: We found a strong spatial aggregation of fir individuals and a positive intraspecific association between juveniles and adult trees. However, there were weak but significant distance-dependent effect on tree size and density-dependent effect on suppression pattern. Research highlights: Shade-tolerance, seed dispersal and/or microsite heterogeneity might play important roles in the observed fir patterns. Our results provide a basic knowledge on within-stand Moroccan fir spatial distribution, with implications for adaptive management of these relic forests, and prompting to further research to test advanced hypotheses.

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