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Spatial patterns of an endemic Mediterranean palm recolonizing old fields
Miguel E Jácome-Flores1, Miguel Delibes1, Thorsten Wiegand2
1Department of Conservation Biology Estación Biológica de Doñana (EBD-CSIC) Seville Spain.
Ecology and Evolution
|December 30, 2016
Summary
The dwarf palm Chamaerops humilis exhibits clustered spatial patterns in abandoned European fields, influenced by seed dispersers and environmental stress. These patterns aid its successful colonization of new habitats.
Area of Science:
- Ecology
- Botany
- Spatial Analysis
Background:
- Land abandonment in Europe facilitates forest and shrubland recolonization.
- The spatial patterns of plants in these regenerating areas are poorly understood.
Purpose of the Study:
- To analyze the spatial structure of Chamaerops humilis populations in abandoned fields.
- To identify processes shaping these patterns and their impact on reproductive success.
Main Methods:
- Spatial Point Pattern Analysis (SPPA) was applied to map adult Chamaerops humilis individuals.
- Thomas point process models, random labeling, and mark correlation functions were used.
- Population clustering, sexual segregation, and size structure were quantified.
Main Results:
- Chamaerops humilis populations displayed two scales of clustering (2.8-4m and 38-44m radii).
- A portion of individuals (11-27%) exhibited a random spatial pattern.
- No spatial segregation by sex was observed; plant size aggregated within clusters.
Conclusions:
- The spatial patterns are influenced by seed disperser behavior and environmental conditions.
- Chamaerops humilis's dispersal strategies and spatial patterns contribute to its successful colonization.
- Findings offer insights for managing and recovering dwarf palm populations.
Keywords:
C. humilisMediterranean scrublandThomas point process modelscolonization frontendozoochorous seed dispersalplant size patternspoint pattern analysisMore Related Videos
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