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| Autori principali: | , , , , |
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| Natura: | Artículo Open Access |
| Pubblicazione: |
Wiley
2025
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| Soggetti: | |
| Accesso online: | https://onlinelibrary.wiley.com/doi/10.1111/aje.70013 |
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Sommario:
- A Graphical Method for Analysing Species Assemblages Combining Habitat Preference and Abundance Mohamed Dakki Meryem Ennakri Mohamed El Farouki Soumia Ziti Abdelhak Zoglat African Journal of Ecology ABSTRACTIn ecological investigations, the characterisation of plant and animal assemblages is carried out by implementing different numerical methods, based on the species abundances and richness. This paper provides a detailed description of a method for characterising assemblages, which uses both abundances and ‘preference degree’ of species. This latter ecological parameter is measured for each species for a sample of habitats by using its abundance profile in this sample; this ecological preference is calculated using an index derived from the Shannon formula, largely used to estimate the entropy. The analysis of an assemblage consists then of classifying the assemblage species in a diagram, depending on their abundance and their ‘preference degree’. The preference degree is described through its theoretical foundations and a series of arguments in its favour as well as its variability and application domains. The relevance of this index is illustrated through real datasets collected on two kinds of assemblages (water insects and waterbirds) that differ by their demographic strategies and their ecology. This method revealed a practical robustness that is justified here, but also some weaknesses, on which will be focused our research prospects for generalising its use. 10.1111/aje.70013 http://onlinelibrary.wiley.com/termsAndConditions#vor