Relaxing the zero-sum assumption in neutral biodiversity theory
作者： Bart Haegeman , Rampal S. Etienne
DOI: 10.1016/J.JTBI.2008.01.023
关键词:
摘要: The zero-sum assumption is one of the ingredients standard neutral model biodiversity by Hubbell. It states that community saturated all time, which in this means total number individuals constant over and therefore introduces a coupling between species abundances. was shown recently with independent species, thus without any abundances, has same sampling formula (given fixed sample) as [Etienne, R.S., Alonso, D., McKane, A.J., 2007. theory. J. Theor. Biol. 248, 522-536]. equilibria both models are equivalent from practical point view. Here we show equivalence can be extended to class density-dependence on community-level. This result interpreted robustness model, i.e. insensitivity precise interaction community. also lack resolution, different mechanisms interactions cannot distinguished using only single snapshot abundance data.
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