A simple model for skewed species-lifetime distributions

Details A simple model for skewed species-lifetime distributions A simple model for skewed species-lifetime distributions

Jun 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010njph...12f3021m&link_type=abstract

New Journal of Physics, Volume 12, Issue 6, pp. 063021 (2010).

Physics

Scientific paper

A simple model of a biological community assembly is studied. Communities are assembled by successive migrations and extinctions of species. In the model, species are interacting with each other. The intensity of the interaction between each pair of species is denoted by an interaction coefficient. At each time step, a new species is introduced to the system with randomly assigned interaction coefficients. If the sum of the coefficients, which we call the fitness of a species, is negative, the species goes extinct. The species-lifetime distribution is found to be well characterized by a stretched exponential function with an exponent close to 1/2. This profile agrees not only with more realistic population dynamics models but also with fossil records. We also find that an age-independent and inversely diversity-dependent mortality, which is confirmed in the simulation, is a key mechanism accounting for the distribution.

Affiliated with

Also associated with

No associations

Rating

A simple model for skewed species-lifetime distributions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A simple model for skewed species-lifetime distributions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A simple model for skewed species-lifetime distributions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1595308