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| Jousset, Alexandre; Eisenhauer, Nico; Merker, Monika; Mouquet, Nicolas; Scheu, Stefan. |
| There is a growing awareness that biodiversity not only drives ecosystem services but also affects evolutionary dynamics. However, different theories predict contrasting outcomes on when do evolutionary processes occur within a context of competition. We tested whether functional diversity can explain diversification patterns. We tracked the survival and diversification of a focal bacterial species (Pseudomonas fluorescens) growing in bacterial communities of variable diversity and composition. We found that high functional diversity reduced the fitness of the focal species and, at the same time, fostered its diversification. This pattern was linked to resource competition: High diversity increased competition on a portion of the resources while leaving... |
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| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00348/45884/74244.pdf |
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| Jousset, Alexandre; Bienhold, Christina; Chatzinotas, Antonis; Gallien, Laure; Gobet, Angelique; Kurm, Viola; Kuesel, Kirsten; Rillig, Matthias C.; Rivett, Damian W.; Salles, Joana F.; Van Der Heijden, Marcel G. A.; Youssef, Noha H.; Zhang, Xiaowei; Wei, Zhong; Hol, W. H. Gera. |
| Rare species are increasingly recognized as crucial, yet vulnerable components of Earth's ecosystems. This is also true for microbial communities, which are typically composed of a high number of relatively rare species. Recent studies have demonstrated that rare species can have an over-proportional role in biogeochemical cycles and may be a hidden driver of microbiome function. In this review, we provide an ecological overview of the rare microbial biosphere, including causes of rarity and the impacts of rare species on ecosystem functioning. We discuss how rare species can have a preponderant role for local biodiversity and species turnover with rarity potentially bound to phylogenetically conserved features. Rare microbes may therefore be overlooked... |
| Tipo: Text |
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| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00488/59940/63159.pdf |
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