Linking obligate mutualism models in an extended consumer-resource framework

A simple model of obligate mutualist populations is presented in an extended consumer-resource (ECR) framework to resolve some of the deficiencies of traditional models. Varying parameters representing the costs of providing a mutualist benefit allows the model to smoothly and stably transition betw...

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Main Authors: Cropp, R, Norbury, J
Formato: Journal article
Idioma:English
Publicado em: Elsevier 2018
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author Cropp, R
Norbury, J
author_facet Cropp, R
Norbury, J
author_sort Cropp, R
collection OXFORD
description A simple model of obligate mutualist populations is presented in an extended consumer-resource (ECR) framework to resolve some of the deficiencies of traditional models. Varying parameters representing the costs of providing a mutualist benefit allows the model to smoothly and stably transition between many existing models of obligate mutualism. Varying density-independent mortality parameters allows us to include or exclude Allee effects, while varying an obligation parameter allows us to smoothly transition between facultative and obligate mutualism. Explicit and exact accounting of mutualism benefits, measured in terms of a finite total amount of cycling limiting resource, is shown to lead to population models that bridge between apparently incompatible models of obligate mutualism. This brings models of obligate mutualism into the Conservative Normal theoretical framework alongside models of competition, mixotrophy and predation.
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spelling oxford-uuid:2cb8dd04-c9b6-4993-bc53-8d5ac09d917b2022-03-26T12:38:52ZLinking obligate mutualism models in an extended consumer-resource frameworkJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:2cb8dd04-c9b6-4993-bc53-8d5ac09d917bEnglishSymplectic Elements at OxfordElsevier2018Cropp, RNorbury, JA simple model of obligate mutualist populations is presented in an extended consumer-resource (ECR) framework to resolve some of the deficiencies of traditional models. Varying parameters representing the costs of providing a mutualist benefit allows the model to smoothly and stably transition between many existing models of obligate mutualism. Varying density-independent mortality parameters allows us to include or exclude Allee effects, while varying an obligation parameter allows us to smoothly transition between facultative and obligate mutualism. Explicit and exact accounting of mutualism benefits, measured in terms of a finite total amount of cycling limiting resource, is shown to lead to population models that bridge between apparently incompatible models of obligate mutualism. This brings models of obligate mutualism into the Conservative Normal theoretical framework alongside models of competition, mixotrophy and predation.
spellingShingle Cropp, R
Norbury, J
Linking obligate mutualism models in an extended consumer-resource framework
title Linking obligate mutualism models in an extended consumer-resource framework
title_full Linking obligate mutualism models in an extended consumer-resource framework
title_fullStr Linking obligate mutualism models in an extended consumer-resource framework
title_full_unstemmed Linking obligate mutualism models in an extended consumer-resource framework
title_short Linking obligate mutualism models in an extended consumer-resource framework
title_sort linking obligate mutualism models in an extended consumer resource framework
work_keys_str_mv AT croppr linkingobligatemutualismmodelsinanextendedconsumerresourceframework
AT norburyj linkingobligatemutualismmodelsinanextendedconsumerresourceframework