Journal article 709 views 112 downloads
Selective extinction against redundant species buffers functional diversity
,
Christine D. Bacon,
Daniele Silvestro,
Austin Hendy,
Carlos Jaramillo,
Alexander Zizka,
Xavier Meyer,
Alexandre Antonelli
Proceedings of the Royal Society B: Biological Sciences, Volume: 287, Issue: 1931, Start page: 20201162
Swansea University Author:
Catalina Pimiento
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DOI (Published version): 10.1098/rspb.2020.1162
Abstract
The extinction of species can destabilize ecological processes. A way to assess the ecological consequences of species loss is by examining changes in functional diversity. The preservation of functional diversity depends on the range of ecological roles performed by species, or functional richness,...
| Published in: | Proceedings of the Royal Society B: Biological Sciences |
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| ISSN: | 0962-8452 1471-2954 |
| Published: |
The Royal Society
2020
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| Online Access: |
Check full text
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa54564 |
| Abstract: |
The extinction of species can destabilize ecological processes. A way to assess the ecological consequences of species loss is by examining changes in functional diversity. The preservation of functional diversity depends on the range of ecological roles performed by species, or functional richness, and the number of species per role, or functional redundancy. However, current knowledge is based on short timescales and an understanding of how functional diversity responds to long-term biodiversity dynamics has been limited by the availability of deep-time, trait-based data. Here, we compile an exceptional trait dataset of fossil mollusks from a 23-million-year interval in the Caribbean Sea (34,011 records, 4,422 species) and develop a novel Bayesian model of multi-trait-dependent diversification to reconstruct mollusk (1) diversity dynamics, (2) changes in functional diversity and (3) extinction selectivity over the last 23 million years. Our results identify high diversification between 23 – 5 Ma, leading to increases in both functional richness and redundancy. Conversely, over the last three million years, a period of high extinction rates resulted in the loss of 49% of species but only 3% of functional richness. Extinction rates were significantly higher in small, functionally redundant species suggesting that competition mediated the response of species to environmental change. Taken together, our results identify long-term diversification and selective extinction against redundant species that allowed functional diversity to grow over time, ultimately buffering the ecological functions of biological communities against extinction. |
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| Keywords: |
Competition, Extinction, Functional diversity, Caribbean, global change, mollusks |
| College: |
Faculty of Science and Engineering |
| Funders: |
C.P was partially funded by the Alexander von Humboldt Foundation and the Federal Ministry for Education and Research (Germany). C.D.B was funded by the Swedish Research Council (2017-04980). D.S. received funding from the Swiss National Science Foundation (PCEFP3_187012; FN-1749) and from the Swedish Research Council (VR: 2019-04739). X.M. was supported by the Swiss National Science Foundation (P2GEP2-178032). A.A. was supported by the Swedish Foundation for Strategic Research, the Swedish Research Council, the Knut and Alice Wallenberg Foundation, and the Royal Botanic Gardens, Kew. This research has received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement no. 663830. |
| Issue: |
1931 |
| Start Page: |
20201162 |