Comparing spatial diversification and meta-population models in the Indo-Australian Archipelago
Reconstructing the processes that have shaped the emergence of biodiversity gradients is critical to understand the dynamics of diversification of life on Earth. Islands have traditionally been used as model systems to unravel the processes shaping biological diversity. MacArthur and Wilson's i...
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| Format: | Article |
| Language: | English |
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The Royal Society
2018-01-01
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| Series: | Royal Society Open Science |
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| Online Access: | https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.171366 |
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| author | Loïc Chalmandrier Camille Albouy Patrice Descombes Brody Sandel Soren Faurby Jens-Christian Svenning Niklaus E. Zimmermann Loïc Pellissier |
| author_facet | Loïc Chalmandrier Camille Albouy Patrice Descombes Brody Sandel Soren Faurby Jens-Christian Svenning Niklaus E. Zimmermann Loïc Pellissier |
| author_sort | Loïc Chalmandrier |
| collection | DOAJ |
| description | Reconstructing the processes that have shaped the emergence of biodiversity gradients is critical to understand the dynamics of diversification of life on Earth. Islands have traditionally been used as model systems to unravel the processes shaping biological diversity. MacArthur and Wilson's island biogeographic model predicts diversity to be based on dynamic interactions between colonization and extinction rates, while treating islands themselves as geologically static entities. The current spatial configuration of islands should influence meta-population dynamics, but long-term geological changes within archipelagos are also expected to have shaped island biodiversity, in part by driving diversification. Here, we compare two mechanistic models providing inferences on species richness at a biogeographic scale: a mechanistic spatial-temporal model of species diversification and a spatial meta-population model. While the meta-population model operates over a static landscape, the diversification model is driven by changes in the size and spatial configuration of islands through time. We compare the inferences of both models to floristic diversity patterns among land patches of the Indo-Australian Archipelago. Simulation results from the diversification model better matched observed diversity than a meta-population model constrained only by the contemporary landscape. The diversification model suggests that the dynamic re-positioning of islands promoting land disconnection and reconnection induced an accumulation of particularly high species diversity on Borneo, which is central within the island network. By contrast, the meta-population model predicts a higher diversity on the mainlands, which is less compatible with empirical data. Our analyses highlight that, by comparing models with contrasting assumptions, we can pinpoint the processes that are most compatible with extant biodiversity patterns. |
| first_indexed | 2024-12-13T17:44:14Z |
| format | Article |
| id | doaj.art-9a22e5e48b574f28868b52a9557a695f |
| institution | Directory Open Access Journal |
| issn | 2054-5703 |
| language | English |
| last_indexed | 2024-12-13T17:44:14Z |
| publishDate | 2018-01-01 |
| publisher | The Royal Society |
| record_format | Article |
| series | Royal Society Open Science |
| spelling | doaj.art-9a22e5e48b574f28868b52a9557a695f2022-12-21T23:36:39ZengThe Royal SocietyRoyal Society Open Science2054-57032018-01-015310.1098/rsos.171366171366Comparing spatial diversification and meta-population models in the Indo-Australian ArchipelagoLoïc ChalmandrierCamille AlbouyPatrice DescombesBrody SandelSoren FaurbyJens-Christian SvenningNiklaus E. ZimmermannLoïc PellissierReconstructing the processes that have shaped the emergence of biodiversity gradients is critical to understand the dynamics of diversification of life on Earth. Islands have traditionally been used as model systems to unravel the processes shaping biological diversity. MacArthur and Wilson's island biogeographic model predicts diversity to be based on dynamic interactions between colonization and extinction rates, while treating islands themselves as geologically static entities. The current spatial configuration of islands should influence meta-population dynamics, but long-term geological changes within archipelagos are also expected to have shaped island biodiversity, in part by driving diversification. Here, we compare two mechanistic models providing inferences on species richness at a biogeographic scale: a mechanistic spatial-temporal model of species diversification and a spatial meta-population model. While the meta-population model operates over a static landscape, the diversification model is driven by changes in the size and spatial configuration of islands through time. We compare the inferences of both models to floristic diversity patterns among land patches of the Indo-Australian Archipelago. Simulation results from the diversification model better matched observed diversity than a meta-population model constrained only by the contemporary landscape. The diversification model suggests that the dynamic re-positioning of islands promoting land disconnection and reconnection induced an accumulation of particularly high species diversity on Borneo, which is central within the island network. By contrast, the meta-population model predicts a higher diversity on the mainlands, which is less compatible with empirical data. Our analyses highlight that, by comparing models with contrasting assumptions, we can pinpoint the processes that are most compatible with extant biodiversity patterns.https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.171366allopatric speciationcontinental driftdispersaldiversificationmeta-population modelneutral model |
| spellingShingle | Loïc Chalmandrier Camille Albouy Patrice Descombes Brody Sandel Soren Faurby Jens-Christian Svenning Niklaus E. Zimmermann Loïc Pellissier Comparing spatial diversification and meta-population models in the Indo-Australian Archipelago Royal Society Open Science allopatric speciation continental drift dispersal diversification meta-population model neutral model |
| title | Comparing spatial diversification and meta-population models in the Indo-Australian Archipelago |
| title_full | Comparing spatial diversification and meta-population models in the Indo-Australian Archipelago |
| title_fullStr | Comparing spatial diversification and meta-population models in the Indo-Australian Archipelago |
| title_full_unstemmed | Comparing spatial diversification and meta-population models in the Indo-Australian Archipelago |
| title_short | Comparing spatial diversification and meta-population models in the Indo-Australian Archipelago |
| title_sort | comparing spatial diversification and meta population models in the indo australian archipelago |
| topic | allopatric speciation continental drift dispersal diversification meta-population model neutral model |
| url | https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.171366 |
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