Notices
Results 1 to 9 of 9

Thread: Follow the weekly report of virtual evolving ecosystemís very long run

  1. #1 Follow the weekly report of virtual evolving ecosystemís very long run 
    Forum Freshman
    Join Date
    Feb 2011
    Location
    Windsor Ontario
    Posts
    5
    We study the evolutionary process and the emergence of species in a simulated ecosystem. We have conceived EcoSim, an individual-based evolving predator-prey ecosystem simulation. The agents evaluate their environment (e.g., distance to predator/prey, distance to potential breeding partner, distance to food, energy level), its internal state (e.g., fear, hunger, curiosity) and chooses among several possible actions such as evasion, eating or breeding. The behavioral model of each individual is unique and is the outcome of the evolution process. This is the only simulation modeling the fact that individual behaviors affect evolution and speciation. We were able to predict species extinction using information about spatial distribution of the individuals, to correlated genetic diversity with the fitness of a species, to show that the overall behaviour of our simulation is deterministic chaotic with multifractal properties and to predict speciation events using some features describing the species properties. This approach will be also used to study the species abundance distribution, patterns and rates of speciation, the evolution of sexual and asexual populations, the interaction and diffusion of an invasive species or a disease in an existing ecosystem, etc.

    We propose a weekly presentation of a run of our simulation that will last for tenth of thousand of time steps at this site:
    https://sites.google.com/site/ecosim...ation/long-run.

    Every week we will add a page presenting a detailed summary of what happen in the system during the last 500 or 1000 time steps. We will show many graphs, videos and figures presenting the evolution of the system, including the number of individuals, the number of species, the amount of food available, the tree of life of the world, the distribution of age of the individuals, the evolved behavioral maps of some individuals, the variability of the gene alleles in the populationsÖ This will allow following the ongoing evolutionary process and its effects on the whole world for thousand of generations.


    Reply With Quote  
     

  2.  
     

  3. #2  
    Forum Bachelors Degree
    Join Date
    Jul 2008
    Posts
    420
    Thanks rgras,

    Sounds interesting.. do you plan to test the results of your in silico run with in vivo experiments/observations, in order to validate the accuracy of your model?

    Best wishes,

    Tridimity


    Reply With Quote  
     

  4. #3  
    Forum Freshman
    Join Date
    Feb 2011
    Location
    Windsor Ontario
    Posts
    5
    Hello Tridimity,

    Yes, we have also made quite a lot of studies with our model. We have analyzed the Species Area Relationships in our system with different sampling methods. We found the same kind of patterns as the ones observed in real ecosystems. We have shown that our system as a chaotic deterministic behavior with multi-fractal properties as it is been observed in many real ecosystem studies. We have analyzed the conditions leading to species extinction or speciation events in our system finding the same kind of factors effecting these events as the ones expected in real situations. We also analyses the diffusion of a disease, the effect of several mitigation strategies and in effect of predators on the diffusion of the disease in the prey population. Each time we compared our results with results obtained in real situations and found very similar results.
    Most of our results are described in the same website: EcoSim: An ecosystem simulation - Ecosim.

    Best regards,

    Robin
    Reply With Quote  
     

  5. #4  
    Forum Bachelors Degree
    Join Date
    Jul 2008
    Posts
    420
    Thanks Robin,

    Your work sounds really exciting, especially given that your in silico model is able to replicate real-world evolutionary outcomes at the population level. Personally I think that the Systems Biology approach will be instrumental in driving forward the progression of scientific discovery in the coming decades. And this approach applies to all disciplines and sub-disciplines of Biology. E.g. I am teaching myself Java with a view to ultimately program 'the' cell.

    Best wishes,

    Tridimity
    Reply With Quote  
     

  6. #5  
    Forum Freshman
    Join Date
    Feb 2011
    Location
    Windsor Ontario
    Posts
    5
    Thank you Tridimity. That is a very interesting but also challenging project! Good luck!

    Best regards,

    Robin
    Reply With Quote  
     

  7. #6  
    Forum Bachelors Degree
    Join Date
    Jul 2008
    Posts
    420
    Hi Robin,

    Yep Audacious. The way i see it, even a proof-of-principle model that does not reflect biological reality perfectly (which will necessarily be the case, since we are still investigating signalling pathways) is better than no model whatsoever.

    Best wishes,

    Tridimity
    Reply With Quote  
     

  8. #7  
    Forum Bachelors Degree
    Join Date
    Jul 2008
    Posts
    420
    It will probably also require the computing power of IBM's Blue Gene or similar
    Reply With Quote  
     

  9. #8  
    Forum Freshman
    Join Date
    Feb 2011
    Location
    Windsor Ontario
    Posts
    5
    Depending on the level of detail you want to model, it can even be much worse than that...
    Reply With Quote  
     

  10. #9  
    Forum Bachelors Degree
    Join Date
    Jul 2008
    Posts
    420
    Oh boy. Good then that computing power doubles approximately every two years, whilst the biological complexity of human cells remains fairly constant!
    Reply With Quote  
     

Similar Threads

  1. Virtual Machines ... XEN , VMware, Virtual box ....
    By m_krispy in forum Computer Science
    Replies: 0
    Last Post: November 27th, 2009, 09:32 AM
  2. Replies: 10
    Last Post: April 27th, 2009, 11:57 PM
  3. How long will a certain amount of batteries run a motor?
    By kingjacob in forum Electrical and Electronics
    Replies: 6
    Last Post: March 30th, 2009, 07:30 PM
  4. Replies: 0
    Last Post: October 20th, 2008, 09:10 PM
  5. This Week in Science - Online Weekly Science Radio Show
    By Marshall Clark in forum General Discussion
    Replies: 0
    Last Post: July 14th, 2005, 04:07 PM
Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •