13 citations · 25 across the 7 of their papers we have counts for
9 papers
Models of Ecological Fitting
Rudy Arthur, Arwen Nicholson, David M Wilkinson
Ecological fitting describes a situation where species interact despite no shared evolutionary history. It is both a null model for adaptation and an important process in its own r…
Adaptation by Cumulative Selection
Rudy Arthur
Biological systems like long-lived clonal organisms, holobionts and clades challenge traditional evolutionary thinking since they adapt without populations or reproduction. This pa…
Life on the Edge: Using Planetary Context to Enhance Biosignatures and Avoid False Positives
Rudy Arthur, Arwen E. Nicholson, Nathan J. Mayne
We use a probability theory framework to discuss the search for biosignatures. This perspective allows us to analyse the potential for different biosignatures to provide convincing…
What doesn't kill Gaia makes her stronger
Rudy Arthur, Arwen E. Nicholson, Nathan J. Mayne
Life on Earth has experienced numerous upheavals over its approximately 4 billion year history. In previous work we have discussed how interruptions to stability lead, on average,…
A Gaian Habitable Zone
Rudy Arthur, Arwen Nicholson
When searching for inhabited exoplanets, understanding the boundaries of the habitable zone around the parent star is key. If life can strongly influence its global environment, th…
Does Gaia Play Dice? : Simple Models of non-Darwinian Selection
Rudy Arthur, Arwen Nicholson
In this paper we introduce some simple models, based on rolling dice, to explore mechanisms proposed to explain planetary habitability. The idea is to study these selection mechani…
Selection Principles for Gaia
R. Arthur, A. Nicholson
The Gaia hypothesis considers the life-environment coupled system as a single entity that acts to regulate and maintain habitable conditions on Earth. In this paper we discuss thre…
An Entropic Model of Gaia
Rudy Arthur, Arwen Nicholson
We modify the Tangled Nature Model of Christensen et. al. so that the agents affect the carrying capacity. This leads to a model of species-environment co-evolution where the syste…
Decision Making on Fitness Landscapes
Rudy Arthur, Paolo Sibani
We discuss fitness landscapes and how they can be modified to account for co-evolution. We are interested in using the landscape as a way to model rational decision making in a toy…