Berlin 2015 – wissenschaftliches Programm
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BP: Fachverband Biologische Physik
BP 6: Networks: From Topology to Dynamics I (joint SOE/DY/BP)
BP 6.2: Vortrag
Montag, 16. März 2015, 12:30–12:45, MA 001
Possible Origin of Stagnation and Variability of Earth’s Biodiversity — •Jan Nagler1, Theo Geisel2, and Frank Stollmeier2 — 1ETH Zurich — 2MPI DS, Göttingen
The magnitude and variability of Earth’s biodiversity have puzzled scientists ever since paleontologic fossil databases became available. We identify and study a model of interdependent species where both endogenous and exogenous impacts determine the nonstationary extinction dynamics. The framework provides an explanation for the qualitative difference of marine and continental biodiversity growth. In particular, the stagnation of marine biodiversity may result from a global transition from an imbalanced to a balanced state of the species dependency network. The predictions of our framework are in agreement with paleontologic databases.
[1] Stollmeier, Geisel, Nagler, Phys. Rev. Lett. 112, 228101 (2014)