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Directionality and community-level selection Bunin, Guy
Description
The dynamics of some systems are directional, meaning that the state of a system can be characterized by a function that increases in time. This includes, for example, the growth of entropy in physical systems, or the growth of fitness in certain formulations of Darwinian evolution. Yet even when directionality holds, it might be sensitive to perturbations, such as interactions in evolutionary dynamics. I'll describe a model of ecological community dynamics which features a phase-transition, from a regime where directionality is sensitive to a regime where it is robust. This has far reaching consequences: In the latter phase, the system admits many alternative community states, that are able to expand in space, forming (exact or approximate) copies of themselves. This leads to community-level selection, in analogy with Darwinian selection, with the increasing function acting as a fitness.
Item Metadata
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Directionality and community-level selection
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Creator | |
Publisher |
Banff International Research Station for Mathematical Innovation and Discovery
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Date Issued |
2019-08-20T12:12
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Description |
The dynamics of some systems are directional, meaning that the state of a system can be characterized by a function that increases in time. This includes, for example, the growth of entropy in physical systems, or the growth of fitness in certain formulations of Darwinian evolution. Yet even when directionality holds, it might be sensitive to perturbations, such as interactions in evolutionary dynamics. I'll describe a model of ecological community dynamics which features a phase-transition, from a regime where directionality is sensitive to a regime where it is robust. This has far reaching consequences: In the latter phase, the system admits many alternative community states, that are able to expand in space, forming (exact or approximate) copies of themselves. This leads to community-level selection, in analogy with Darwinian selection, with the increasing function acting as a fitness.
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Extent |
34.0 minutes
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video/mp4
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Language |
eng
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Notes |
Author affiliation: Technion
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Series | |
Date Available |
2021-01-18
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Provider |
Vancouver : University of British Columbia Library
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Rights |
Attribution-NonCommercial-NoDerivatives 4.0 International
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DOI |
10.14288/1.0395644
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URI | |
Affiliation | |
Peer Review Status |
Unreviewed
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Scholarly Level |
Researcher
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Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
Attribution-NonCommercial-NoDerivatives 4.0 International