Type
ArticleKAUST Department
Applied Mathematics and Computational Science ProgramComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Date
2013-06-13Online Publication Date
2013-06-13Print Publication Date
2013Permanent link to this record
http://hdl.handle.net/10754/550710
Metadata
Show full item recordAbstract
We investigate a realistic three-species food-chain model, with generalist top predator. The model based on a modified version of the Leslie-Gower scheme incorporates mutual interference in all the three populations and generalizes several other known models in the ecological literature. We show that the model exhibits finite time blowup in certain parameter range and for large enough initial data. This result implies that finite time blowup is possible in a large class of such three-species food-chain models. We propose a modification to the model and prove that the modified model has globally existing classical solutions, as well as a global attractor. We reconstruct the attractor using nonlinear time series analysis and show that it pssesses rich dynamics, including chaos in certain parameter regime, whilst avoiding blowup in any parameter regime. We also provide estimates on its fractal dimension as well as provide numerical simulations to visualise the spatiotemporal chaos.Citation
Finite Time Blowup in a Realistic Food-Chain Model 2013, 2013:1 ISRN BiomathematicsPublisher
Hindawi LimitedJournal
ISRN BiomathematicsAdditional Links
http://www.hindawi.com/journals/isrn.biomathematics/2013/424062/ae974a485f413a2113503eed53cd6c53
10.1155/2013/424062