Phase transitions in two-dimensional daisyworld with small-world effects- A study of local and long-range couplings

Authors:
Dharani Punithan;R.I. (Bob) Mckay
Affiliations:
-;-
Venue:
Future Generation Computer Systems
Year:
2014

Citing 5
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Future Generation Computer Systems

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Abstract

Watson and Lovelock's daisyworld is a coupled biotic-abiotic feedback loop exhibiting interesting planetary ecodynamics. Previous studies have shown fascinating spatio-temporal dynamics in a 2D daisyworld, with the emergence of complex spatial patterns. We introduce small-world effect into such a system. Even a small fraction of long-range couplings destroys the emergent static pattern formation, leading to completely coherent periodic dominance as observed in fully-connected graphs. This change in daisyworld behaviour depends only on the small-world effect, independent of the means by which they are induced (Watts-Strogatz, Newman-Watts and smallest-world models). The transition from static patterns in grid worlds to periodic coexisting dominance in small-worlds is relatively abrupt, exhibiting a critical region of rapid transition. The behaviours in this transition region are a mix of emergent static spatial patterns and large-scale pattern disruption.