Ecological versatility and the assembly of multiple competitors: cautionary notes for assembly inferences
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/164176 |
Resumo: | The role of niche differences and competition is invoked when one finds coexisting species to be more dissimilar in trait composition than expected at random in community assembly studies. This approach has been questioned as competition has been hypothesized to either lead to communities assembled by similar or dissimilar species, depending on whether species similarity reflects fitness or niche differences, respectively. A current problem is that the arguments used to draw relationships between competition and species similarity are based on pairwise theoretical examples, while in nature competition can occurs among a constellation of species with different levels of versatility in resources used. By versatility we mean the documented ability of some species to escape competition for commonly used resources by changing for marginal and unused resources. Thus, a versatile species will have the ability to decrease niche overlap with all other species when facing strong competitors. When these species are embedded in multiple interactions the role of pairwise niche and fitness differences could be reduced due to indirect effects and thus competition would not be detectable. Here we developed a coexistence theory where competition occurs simultaneously among multiple species with different levels of versatility and then used it in a simulation to unravel patterns of species similarity during community assembly. We found that simulated communities can be assembled by species with more, less or equal similarity compared to a null model when using a mean distance based metric (SES.MPD). However, contrasting these varied results, we consistently found species overdispersion using a nearest neighbor-based metric (SES.MNTD), even when species differences reflected more directly their competitive abilities than their niche differences. Strong tendency to overdispersion emerged when high ecological versatility promoted large niche differences and enabled coexistence. This is because versatility to use marginal resources compensates possible fitness differences among species. Our findings provide mounting evidence of the important role of minimum niche differences and versatility in resource consumption for species embedded in multiple direct and indirect interactions. |
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Ecological versatility and the assembly of multiple competitors: cautionary notes for assembly inferencesassembly rulesclusteringfunctional diversityfunctional versatilitylimiting similaritymultispecies competitionniche theoryoverdispersionThe role of niche differences and competition is invoked when one finds coexisting species to be more dissimilar in trait composition than expected at random in community assembly studies. This approach has been questioned as competition has been hypothesized to either lead to communities assembled by similar or dissimilar species, depending on whether species similarity reflects fitness or niche differences, respectively. A current problem is that the arguments used to draw relationships between competition and species similarity are based on pairwise theoretical examples, while in nature competition can occurs among a constellation of species with different levels of versatility in resources used. By versatility we mean the documented ability of some species to escape competition for commonly used resources by changing for marginal and unused resources. Thus, a versatile species will have the ability to decrease niche overlap with all other species when facing strong competitors. When these species are embedded in multiple interactions the role of pairwise niche and fitness differences could be reduced due to indirect effects and thus competition would not be detectable. Here we developed a coexistence theory where competition occurs simultaneously among multiple species with different levels of versatility and then used it in a simulation to unravel patterns of species similarity during community assembly. We found that simulated communities can be assembled by species with more, less or equal similarity compared to a null model when using a mean distance based metric (SES.MPD). However, contrasting these varied results, we consistently found species overdispersion using a nearest neighbor-based metric (SES.MNTD), even when species differences reflected more directly their competitive abilities than their niche differences. Strong tendency to overdispersion emerged when high ecological versatility promoted large niche differences and enabled coexistence. This is because versatility to use marginal resources compensates possible fitness differences among species. Our findings provide mounting evidence of the important role of minimum niche differences and versatility in resource consumption for species embedded in multiple direct and indirect interactions.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Univ Fed Sao Carlos, Dept Ciencias Ambientais DCAm, Rodovia Washington Luis,Km 235, BR-13565905 Sao Carlos, SP, BrazilUniv Fed Sao Carlos, Programa Posgrad Ecol & Recursos, Rodovia Washington Luis,Km 235, BR-13565905 Sao Carlos, SP, BrazilUPMC, Sorbonne Univ, Ctr Ecol & Sci Conservat CESCO UMR7204, MNHN,CNRS, CP51,43-61 Rue Buffon, F-75005 Paris, FranceIrstea, UR EFNO, F-45290 Nogent Sur Vernisson, FranceUniv Estadual Paulista, Inst Biociencias, Dept Ecol, UNESP, Av 24-A,1515, BR-13506900 Rio Claro, SP, BrazilUniv Estadual Paulista, Inst Biociencias, Dept Ecol, UNESP, Av 24-A,1515, BR-13506900 Rio Claro, SP, BrazilFAPESP: 2013/50424-1FAPESP: 2013/20540-0FAPESP: 2014/24532-4CNPq: 403723/2012-4Wiley-BlackwellUniversidade Federal de São Carlos (UFSCar)UPMCIrsteaUniversidade Estadual Paulista (Unesp)Saito, Victor S.Laroche, FabienSiqueira, Tadeu [UNESP]Pavoine, Sandrine2018-11-26T17:51:34Z2018-11-26T17:51:34Z2018-05-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1173-1183application/pdfEcology. Hoboken: Wiley, v. 99, n. 5, p. 1173-1183, 2018.0012-9658http://hdl.handle.net/11449/164176WOS:000431987600018WOS000431987600018.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengEcology2,998info:eu-repo/semantics/openAccess2023-11-04T06:06:28Zoai:repositorio.unesp.br:11449/164176Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:51:46.625167Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Ecological versatility and the assembly of multiple competitors: cautionary notes for assembly inferences |
title |
Ecological versatility and the assembly of multiple competitors: cautionary notes for assembly inferences |
spellingShingle |
Ecological versatility and the assembly of multiple competitors: cautionary notes for assembly inferences Saito, Victor S. assembly rules clustering functional diversity functional versatility limiting similarity multispecies competition niche theory overdispersion |
title_short |
Ecological versatility and the assembly of multiple competitors: cautionary notes for assembly inferences |
title_full |
Ecological versatility and the assembly of multiple competitors: cautionary notes for assembly inferences |
title_fullStr |
Ecological versatility and the assembly of multiple competitors: cautionary notes for assembly inferences |
title_full_unstemmed |
Ecological versatility and the assembly of multiple competitors: cautionary notes for assembly inferences |
title_sort |
Ecological versatility and the assembly of multiple competitors: cautionary notes for assembly inferences |
author |
Saito, Victor S. |
author_facet |
Saito, Victor S. Laroche, Fabien Siqueira, Tadeu [UNESP] Pavoine, Sandrine |
author_role |
author |
author2 |
Laroche, Fabien Siqueira, Tadeu [UNESP] Pavoine, Sandrine |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Federal de São Carlos (UFSCar) UPMC Irstea Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Saito, Victor S. Laroche, Fabien Siqueira, Tadeu [UNESP] Pavoine, Sandrine |
dc.subject.por.fl_str_mv |
assembly rules clustering functional diversity functional versatility limiting similarity multispecies competition niche theory overdispersion |
topic |
assembly rules clustering functional diversity functional versatility limiting similarity multispecies competition niche theory overdispersion |
description |
The role of niche differences and competition is invoked when one finds coexisting species to be more dissimilar in trait composition than expected at random in community assembly studies. This approach has been questioned as competition has been hypothesized to either lead to communities assembled by similar or dissimilar species, depending on whether species similarity reflects fitness or niche differences, respectively. A current problem is that the arguments used to draw relationships between competition and species similarity are based on pairwise theoretical examples, while in nature competition can occurs among a constellation of species with different levels of versatility in resources used. By versatility we mean the documented ability of some species to escape competition for commonly used resources by changing for marginal and unused resources. Thus, a versatile species will have the ability to decrease niche overlap with all other species when facing strong competitors. When these species are embedded in multiple interactions the role of pairwise niche and fitness differences could be reduced due to indirect effects and thus competition would not be detectable. Here we developed a coexistence theory where competition occurs simultaneously among multiple species with different levels of versatility and then used it in a simulation to unravel patterns of species similarity during community assembly. We found that simulated communities can be assembled by species with more, less or equal similarity compared to a null model when using a mean distance based metric (SES.MPD). However, contrasting these varied results, we consistently found species overdispersion using a nearest neighbor-based metric (SES.MNTD), even when species differences reflected more directly their competitive abilities than their niche differences. Strong tendency to overdispersion emerged when high ecological versatility promoted large niche differences and enabled coexistence. This is because versatility to use marginal resources compensates possible fitness differences among species. Our findings provide mounting evidence of the important role of minimum niche differences and versatility in resource consumption for species embedded in multiple direct and indirect interactions. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-11-26T17:51:34Z 2018-11-26T17:51:34Z 2018-05-01 |
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 |
Ecology. Hoboken: Wiley, v. 99, n. 5, p. 1173-1183, 2018. 0012-9658 http://hdl.handle.net/11449/164176 WOS:000431987600018 WOS000431987600018.pdf |
identifier_str_mv |
Ecology. Hoboken: Wiley, v. 99, n. 5, p. 1173-1183, 2018. 0012-9658 WOS:000431987600018 WOS000431987600018.pdf |
url |
http://hdl.handle.net/11449/164176 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Ecology 2,998 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1173-1183 application/pdf |
dc.publisher.none.fl_str_mv |
Wiley-Blackwell |
publisher.none.fl_str_mv |
Wiley-Blackwell |
dc.source.none.fl_str_mv |
Web of Science 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_ |
1808128712183382016 |