Human-Plant Coevolution: A modelling framework for theory-building on the origins of agriculture.

The domestication of plants and the origin of agricultural societies has been the focus of much theoretical discussion on why, how, when, and where these happened. The 'when' and 'where' have been substantially addressed by different branches of archaeology, thanks to advances in...

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Main Authors: Andreas Angourakis, Jonas Alcaina-Mateos, Marco Madella, Debora Zurro
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2022-01-01
Series:PLoS ONE
Online Access:https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0260904&type=printable
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author Andreas Angourakis
Jonas Alcaina-Mateos
Marco Madella
Debora Zurro
author_facet Andreas Angourakis
Jonas Alcaina-Mateos
Marco Madella
Debora Zurro
author_sort Andreas Angourakis
collection DOAJ
description The domestication of plants and the origin of agricultural societies has been the focus of much theoretical discussion on why, how, when, and where these happened. The 'when' and 'where' have been substantially addressed by different branches of archaeology, thanks to advances in methodology and the broadening of the geographical and chronological scope of evidence. However, the 'why' and 'how' have lagged behind, holding on to relatively old models with limited explanatory power. Armed with the evidence now available, we can return to theory by revisiting the mechanisms allegedly involved, disentangling their connection to the diversity of trajectories, and identifying the weight and role of the parameters involved. We present the Human-Plant Coevolution (HPC) model, which represents the dynamics of coevolution between a human and a plant population. The model consists of an ecological positive feedback system (mutualism), which can be reinforced by positive evolutionary feedback (coevolution). The model formulation is the result of wiring together relatively simple simulation models of population ecology and evolution, through a computational implementation in R. The HPC model captures a variety of potential scenarios, though which conditions are linked to the degree and timing of population change and the intensity of selective pressures. Our results confirm that the possible trajectories leading to neolithisation are diverse and involve multiple factors. However, simulations also show how some of those factors are entangled, what are their effects on human and plant populations under different conditions, and what might be the main causes fostering agriculture and domestication.
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spelling doaj-art-fb571aeef2f14a56be53505dba0a0e8c2025-08-20T02:31:38ZengPublic Library of Science (PLoS)PLoS ONE1932-62032022-01-01179e026090410.1371/journal.pone.0260904Human-Plant Coevolution: A modelling framework for theory-building on the origins of agriculture.Andreas AngourakisJonas Alcaina-MateosMarco MadellaDebora ZurroThe domestication of plants and the origin of agricultural societies has been the focus of much theoretical discussion on why, how, when, and where these happened. The 'when' and 'where' have been substantially addressed by different branches of archaeology, thanks to advances in methodology and the broadening of the geographical and chronological scope of evidence. However, the 'why' and 'how' have lagged behind, holding on to relatively old models with limited explanatory power. Armed with the evidence now available, we can return to theory by revisiting the mechanisms allegedly involved, disentangling their connection to the diversity of trajectories, and identifying the weight and role of the parameters involved. We present the Human-Plant Coevolution (HPC) model, which represents the dynamics of coevolution between a human and a plant population. The model consists of an ecological positive feedback system (mutualism), which can be reinforced by positive evolutionary feedback (coevolution). The model formulation is the result of wiring together relatively simple simulation models of population ecology and evolution, through a computational implementation in R. The HPC model captures a variety of potential scenarios, though which conditions are linked to the degree and timing of population change and the intensity of selective pressures. Our results confirm that the possible trajectories leading to neolithisation are diverse and involve multiple factors. However, simulations also show how some of those factors are entangled, what are their effects on human and plant populations under different conditions, and what might be the main causes fostering agriculture and domestication.https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0260904&type=printable
spellingShingle Andreas Angourakis
Jonas Alcaina-Mateos
Marco Madella
Debora Zurro
Human-Plant Coevolution: A modelling framework for theory-building on the origins of agriculture.
PLoS ONE
title Human-Plant Coevolution: A modelling framework for theory-building on the origins of agriculture.
title_full Human-Plant Coevolution: A modelling framework for theory-building on the origins of agriculture.
title_fullStr Human-Plant Coevolution: A modelling framework for theory-building on the origins of agriculture.
title_full_unstemmed Human-Plant Coevolution: A modelling framework for theory-building on the origins of agriculture.
title_short Human-Plant Coevolution: A modelling framework for theory-building on the origins of agriculture.
title_sort human plant coevolution a modelling framework for theory building on the origins of agriculture
url https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0260904&type=printable
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AT marcomadella humanplantcoevolutionamodellingframeworkfortheorybuildingontheoriginsofagriculture
AT deborazurro humanplantcoevolutionamodellingframeworkfortheorybuildingontheoriginsofagriculture