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The concerted emergence of well-known spatial and temporal ecological patterns in an evolutionary food web model in space

Michaela Hamm, Barbara Drossel
doi: https://doi.org/10.1101/810390
Michaela Hamm
1Institut für Festkörperphysik, TU Darmstadt
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  • For correspondence: mhamm@fkp.tu-darmstadt.de
Barbara Drossel
1Institut für Festkörperphysik, TU Darmstadt
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ABSTRACT

Ecological systems show a variety of characteristic patterns of biodiversity in space and time. It is a challenge for theory to find models that can reproduce and explain the observed patterns. Since the advent of island biogeography these models revolve around speciation, dispersal, and extinction, but they usually neglect trophic structure. Here, we propose and study a spatially extended evolutionary food web model that allows us to study large spatial systems with several trophic layers. Our computer simulations show that the model gives rise simultaneously to several biodiversity patterns in space and time, from species abundance distributions to the waxing and waning of geographic ranges. We find that trophic position in the network plays a crucial role when it comes to the time evolution of range sizes, because the trophic context restricts the occurrence and survival of species especially on higher trophic levels.

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The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license.
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Posted October 18, 2019.
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The concerted emergence of well-known spatial and temporal ecological patterns in an evolutionary food web model in space
Michaela Hamm, Barbara Drossel
bioRxiv 810390; doi: https://doi.org/10.1101/810390
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The concerted emergence of well-known spatial and temporal ecological patterns in an evolutionary food web model in space
Michaela Hamm, Barbara Drossel
bioRxiv 810390; doi: https://doi.org/10.1101/810390

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