Theory does not meet experiment: transient dynamics changes patterns of exclusion in an intraguild predation system
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s10144-017-0602-5 http://hdl.handle.net/11449/175477 |
Resumo: | Although empirical verifications of ecological theory are essential for the advance of our understanding of ecosystems functioning, they are often hard to obtain or even impractical. In this work we perform a detailed analysis of unexpected results found in a previous test of intraguild predation (IGP) theory. When the IG prey is the stronger competitor the IGP theory predicts a clear dynamical pattern along a resource gradient. In particular, the IG predator is expected to be excluded at low resources. In the experiment we analyze, IG prey was excluded at a resource level where the IG predator should be eliminated. We use a simple IGP model parametrized using mainly preliminary tests of the experiment. We suggest that experiment and theory agree if we look to the transient dynamics instead of asymptotic states, in which the usual theory is based. We show that extremely low IG prey populations during the transient may drive it to extinction and prevent the system from reaching long-term states. Our results are shown to be robust with respect to changes in initial conditions and parameters. |
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Theory does not meet experiment: transient dynamics changes patterns of exclusion in an intraguild predation systemCommunity modulesPopulation dynamicsTest of ecological theoryTransient exclusionAlthough empirical verifications of ecological theory are essential for the advance of our understanding of ecosystems functioning, they are often hard to obtain or even impractical. In this work we perform a detailed analysis of unexpected results found in a previous test of intraguild predation (IGP) theory. When the IG prey is the stronger competitor the IGP theory predicts a clear dynamical pattern along a resource gradient. In particular, the IG predator is expected to be excluded at low resources. In the experiment we analyze, IG prey was excluded at a resource level where the IG predator should be eliminated. We use a simple IGP model parametrized using mainly preliminary tests of the experiment. We suggest that experiment and theory agree if we look to the transient dynamics instead of asymptotic states, in which the usual theory is based. We show that extremely low IG prey populations during the transient may drive it to extinction and prevent the system from reaching long-term states. Our results are shown to be robust with respect to changes in initial conditions and parameters.Instituto de Física Teórica São Paulo State University (UNESP)Instituto de Física Teórica São Paulo State University (UNESP)Universidade Estadual Paulista (Unesp)Maciel, Gabriel Andreguetto [UNESP]Kraenkel, Roberto André [UNESP]2018-12-11T17:15:59Z2018-12-11T17:15:59Z2017-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article371-378application/pdfhttp://dx.doi.org/10.1007/s10144-017-0602-5Population Ecology, v. 59, n. 4, p. 371-378, 2017.1438-3896http://hdl.handle.net/11449/17547710.1007/s10144-017-0602-52-s2.0-850335994822-s2.0-85033599482.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPopulation Ecology0,955info:eu-repo/semantics/openAccess2023-10-22T06:10:00Zoai:repositorio.unesp.br:11449/175477Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:38:30.653591Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Theory does not meet experiment: transient dynamics changes patterns of exclusion in an intraguild predation system |
title |
Theory does not meet experiment: transient dynamics changes patterns of exclusion in an intraguild predation system |
spellingShingle |
Theory does not meet experiment: transient dynamics changes patterns of exclusion in an intraguild predation system Maciel, Gabriel Andreguetto [UNESP] Community modules Population dynamics Test of ecological theory Transient exclusion |
title_short |
Theory does not meet experiment: transient dynamics changes patterns of exclusion in an intraguild predation system |
title_full |
Theory does not meet experiment: transient dynamics changes patterns of exclusion in an intraguild predation system |
title_fullStr |
Theory does not meet experiment: transient dynamics changes patterns of exclusion in an intraguild predation system |
title_full_unstemmed |
Theory does not meet experiment: transient dynamics changes patterns of exclusion in an intraguild predation system |
title_sort |
Theory does not meet experiment: transient dynamics changes patterns of exclusion in an intraguild predation system |
author |
Maciel, Gabriel Andreguetto [UNESP] |
author_facet |
Maciel, Gabriel Andreguetto [UNESP] Kraenkel, Roberto André [UNESP] |
author_role |
author |
author2 |
Kraenkel, Roberto André [UNESP] |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Maciel, Gabriel Andreguetto [UNESP] Kraenkel, Roberto André [UNESP] |
dc.subject.por.fl_str_mv |
Community modules Population dynamics Test of ecological theory Transient exclusion |
topic |
Community modules Population dynamics Test of ecological theory Transient exclusion |
description |
Although empirical verifications of ecological theory are essential for the advance of our understanding of ecosystems functioning, they are often hard to obtain or even impractical. In this work we perform a detailed analysis of unexpected results found in a previous test of intraguild predation (IGP) theory. When the IG prey is the stronger competitor the IGP theory predicts a clear dynamical pattern along a resource gradient. In particular, the IG predator is expected to be excluded at low resources. In the experiment we analyze, IG prey was excluded at a resource level where the IG predator should be eliminated. We use a simple IGP model parametrized using mainly preliminary tests of the experiment. We suggest that experiment and theory agree if we look to the transient dynamics instead of asymptotic states, in which the usual theory is based. We show that extremely low IG prey populations during the transient may drive it to extinction and prevent the system from reaching long-term states. Our results are shown to be robust with respect to changes in initial conditions and parameters. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-10-01 2018-12-11T17:15:59Z 2018-12-11T17:15:59Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1007/s10144-017-0602-5 Population Ecology, v. 59, n. 4, p. 371-378, 2017. 1438-3896 http://hdl.handle.net/11449/175477 10.1007/s10144-017-0602-5 2-s2.0-85033599482 2-s2.0-85033599482.pdf |
url |
http://dx.doi.org/10.1007/s10144-017-0602-5 http://hdl.handle.net/11449/175477 |
identifier_str_mv |
Population Ecology, v. 59, n. 4, p. 371-378, 2017. 1438-3896 10.1007/s10144-017-0602-5 2-s2.0-85033599482 2-s2.0-85033599482.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Population Ecology 0,955 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
371-378 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128543173902336 |