Consequences of shade management on the taxonomic patterns and functional diversity of termites (Blattodea: Termitidae) in cocoa agroforestry systems
| Autor: | Ambele C. Felicitas, Sunday Ekesi, Olubukola Oluranti Babalola, Marie J. Meupia, Komivi Senyo Akutse, Bisseleua D. B. Herve, Christian T. L. Djuideu |
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| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
shade management termites 010603 evolutionary biology 01 natural sciences Blattodea Transect Ecology Evolution Behavior and Systematics Nature and Landscape Conservation Original Research Ecology biology Agroforestry fungi food and beverages biology.organism_classification functional diversity 010602 entomology Termitidae Habitat Litter PEST analysis Species richness agricultural intensification ecosystem services Rhinotermitidae |
| Zdroj: | Ecology and Evolution |
| ISSN: | 2045-7758 |
| Popis: | Termites have gained importance as major pests in cocoa agroforests. Proper identification of termite species and knowledge on their functional diversity are the first steps in developing environmentally compatible management strategies. We tested the hypothesis that patterns of termite species richness in different cocoa agroforests is related to responses by termite functional groups to changes in shade management. We compared termite assemblages under five cocoa agroforestry systems in Cameroon to assess the impact of shade on termite taxonomic and functional group diversity. Sampling was done using a modified standardized transect method. Two 30 × 30 m quadrates each divided into three transects were laid in four farms at each site. Termites sampled were identified and grouped according to habitats, functional groups, and feeding habits. Sixty‐nine termite species in 33 genera and five subfamilies under two families were sampled. Termitidae was the most dominant family and Rhinotermitidae the least dominant with few species. Termite species richness decreased significantly from the heavy shaded cocoa agroforests (44 species) to the full sun (11 species). Functional group pattern differed significantly in all the cocoa agroforests and within each agroforestry system and dominated by wood and litter feeder species. Many species belonging to this group were responsible to most damages on cocoa trees. Both the richness of termite pests and marketable yield followed a quadratic curve and were found to be lowest and highest in plots with shade cover above 40%. The simulated optimal shade levels for low termite infestations and marketable yield overlapped between 45% and 65% indicating that cocoa agroforestry systems with around 55% shade cover may be optimal to balance termite infestations and marketable yield. Shade maintenance in cocoa agroforests is valuable in reducing termite pest species and conserving soil feeding termites which provide beneficial ecosystem services. |
| Databáze: | OpenAIRE |
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