David Bourget (Western Ontario)
David Chalmers (ANU, NYU)
Rafael De Clercq
Jack Alan Reynolds
Learn more about PhilPapers
Acta Biotheoretica 53 (4):359-370 (2005)
Spatial and temporal heterogeneity are often described as important factors having a strong impact on biodiversity. The effect of heterogeneity is in most cases analyzed by the response of biotic interactions such as competition of predation. It may also modify intrinsic population properties such as growth rate. Most of the studies are theoretic since it is often difficult to manipulate spatial heterogeneity in practice. Despite the large number of studies dealing with this topics, it is still difficult to understand how the heterogeneity affects populations dynamics. On the basis of a very simple model, this paper aims to explicitly provide a simple mechanism which can explain why spatial heterogeneity may be a favorable factor for production. We consider a two patch model and a logistic growth is assumed on each patch. A general condition on the migration rates and the local subpopulation growth rates is provided under which the total carrying capacity is higher than the sum of the local carrying capacities, which is not intuitive. As we illustrate, this result is robust under stochastic perturbations.
|Keywords||Philosophy Philosophy of Biology Evolutionary Biology|
|Categories||categorize this paper)|
Setup an account with your affiliations in order to access resources via your University's proxy server
Configure custom proxy (use this if your affiliation does not provide a proxy)
|Through your library|
References found in this work BETA
No references found.
Citations of this work BETA
No citations found.
Similar books and articles
A. Steiner & I. Walker (1990). The Pattern of Population Growth as a Function of Redundancy and Repair. Acta Biotheoretica 38 (2):83-90.
F. Kozusko & M. Bourdeau (2011). Trans-Theta Logistics: A New Family of Population Growth Sigmoid Functions. Acta Biotheoretica 59 (3):273-289.
Rachid Mchich, Amal Bergam & Nadia Raïssi (2005). Effects of Density Dependent Migrations on the Dynamics of a Predator Prey Model. Acta Biotheoretica 53 (4):331-340.
L. Pischedda, J. C. Poggiale, P. Cuny & F. Gilbert (2008). Imaging Oxygen Distribution in Marine Sediments: The Importance of Bioturbation and Sediment Heterogeneity. Acta Biotheoretica 56 (1-2):123-135.
Peter Godfrey-Smith (1998). On the Evolution of Behavioral Heterogeneity in Individuals and Populations. Biology and Philosophy 13 (2):205-231.
Ángeles Rincón, Juan Antonio Alonso & Luis Sanz (2009). Reduction of Supercritical Multiregional Stochastic Models with Fast Migration. Acta Biotheoretica 57 (4):479-500.
S. Charles, R. Bravo de la Parra, J. P. Mallet, H. Persat & P. Auger (1998). Population Dynamics Modelling in an Hierarchical Arborescent River Network: An Attempt with Salmo Trutta. Acta Biotheoretica 46 (3):223-234.
Frank Dochy (1995). Human Population Growth: Local Dynamics-Global Effects. Acta Biotheoretica 43 (3):241-247.
Pierre Auger & Jean-Christophe Poggiale (1996). Aggregation and Emergence in Hierarchically Organized Systems: Population Dynamics. Acta Biotheoretica 44 (3-4):301-316.
Kris McDaniel (2009). Extended Simples and Qualitative Heterogeneity. Philosophical Quarterly 59 (235):325-331.
Added to index2009-01-28
Total downloads5 ( #377,318 of 1,726,249 )
Recent downloads (6 months)3 ( #231,316 of 1,726,249 )
How can I increase my downloads?