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| Chalmandrier, Loic; Albouy, Camille; Pellissier, Loic. |
| Grasslands deliver the resources for food production and are among the most biologically diverse ecosystems. These characteristics are often in conflict as increasing yield through fertilization can lead to biodiversity loss. Thus, the challenge in grassland management is to sustain both yield and diversity. Biodiversity-ecosystem functioning experiments typically reveal a positive relationship between manipulated species diversity and productivity. In contrast, observations of the effect of increasing productivity via fertilization suggest a negative association with biodiversity. Using a mathematical model simulating species co-existence along a resource gradient, we show that trade-offs and species pool structure (size and trait distribution) determines... |
| Tipo: Text |
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| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00412/52393/53237.pdf |
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| Chalmandrier, Loic; Albouy, Camille; Descombes, Patrice; Sandel, Brody; Faurby, Soren; Syenning, Jens-christian; Zimmermann, Niklaus E.; Pellissier, Loic. |
| 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... |
| Tipo: Text |
Palavras-chave: Allopatric speciation; Continental drift; Dispersal; Diversification; Meta-population model; Neutral model. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00602/71377/69825.pdf |
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