Untangling the complex food webs of tropical rainforest streams

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Federal de São Carlos (UFSCar)-
Autor(es): dc.contributorQueen Mary University of London-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversity of Hertfordshire-
Autor(es): dc.contributorUniversity of Roehampton-
Autor(es): dc.creatorSaito, Victor S.-
Autor(es): dc.creatorKratina, Pavel-
Autor(es): dc.creatorBarbosa, Gedimar-
Autor(es): dc.creatorFerreira, Fabio Cop-
Autor(es): dc.creatorLeal, Jean Barbosa-
Autor(es): dc.creatorZemelka, Gabriela-
Autor(es): dc.creatorSarmento, Hugo-
Autor(es): dc.creatorPerkins, Daniel M.-
Data de aceite: dc.date.accessioned2025-08-21T15:12:52Z-
Data de disponibilização: dc.date.available2025-08-21T15:12:52Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-08-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1111/1365-2656.14121-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/305307-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/305307-
Descrição: dc.descriptionFood webs depict the tangled web of trophic interactions associated with the functioning of an ecosystem. Understanding the mechanisms providing stability to these food webs is therefore vital for conservation efforts and the management of natural systems. Here, we first characterised a tropical stream meta-food web and five individual food webs using a Bayesian Hierarchical approach unifying three sources of information (gut content analysis, literature compilation and stable isotope data). With data on population-level biomass and individually measured body mass, we applied a bioenergetic model and assessed food web stability using a Lotka–Volterra system of equations. We then assessed the resilience of the system to individual species extinctions using simulations and investigated the network patterns associated with systems with higher stability. The model resulted in a stable meta-food web with 307 links among the 61 components. At the regional scale, 70% of the total energy flow occurred through a set of 10 taxa with large variation in body masses. The remaining 30% of total energy flow relied on 48 different taxa, supporting a significant dependency on a diverse community. The meta-food web was stable against individual species extinctions, with a higher resilience in food webs harbouring omnivorous fish species able to connect multiple food web compartments via weak, non-specialised interactions. Moreover, these fish species contributed largely to the spatial variation among individual food webs, suggesting that these species could operate as mobile predators connecting different streams and stabilising variability at the regional scale. Our results outline two key mechanisms of food web stability operating in tropical streams: (i) the diversity of species and body masses buffering against random and size-dependent disturbances and (ii) high regional diversity and weak omnivorous interactions of predators buffering against local stochastic variation in species composition. These mechanisms rely on high local and regional biodiversity in tropical streams, which is known to be strongly affected by human impacts. Therefore, an urgent challenge is to understand how the ongoing systematic loss of diversity jeopardises the stability of stream food webs in human-impacted landscapes.-
Descrição: dc.descriptionBritish Ecological Society-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionNewton Fund-
Descrição: dc.descriptionEnvironmental Sciences Department Federal University of São Carlos, SP-
Descrição: dc.descriptionSchool of Biological and Behavioural Sciences Queen Mary University of London-
Descrição: dc.descriptionGraduate Program in Ecology Evolution and Biodiversity São Paulo State University, SP-
Descrição: dc.descriptionMarine Sciences Department Federal University of São Paulo, SP-
Descrição: dc.descriptionUndergraduate Course in Environmental Analysis and Management Federal University of São Carlos, SP-
Descrição: dc.descriptionGeography Environment and Planning School of Life and Medical Sciences University of Hertfordshire-
Descrição: dc.descriptionHydrobiology Department Federal University of São Carlos, SP-
Descrição: dc.descriptionSchool of Life and Health Sciences University of Roehampton-
Descrição: dc.descriptionGraduate Program in Ecology Evolution and Biodiversity São Paulo State University, SP-
Descrição: dc.descriptionFAPESP: 2019/05464-1-
Descrição: dc.descriptionFAPESP: 2020/07522-6-
Descrição: dc.descriptionFAPESP: 2022/01452-1-
Descrição: dc.descriptionCAPES: 88887.717205/2022-00-
Descrição: dc.descriptionNewton Fund: NMG\R1\201121-
Formato: dc.format1022-1035-
Idioma: dc.languageen-
Relação: dc.relationJournal of Animal Ecology-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectfood webs-
Palavras-chave: dc.subjectmacroinvertebrates-
Palavras-chave: dc.subjectmetabolic theory-
Palavras-chave: dc.subjectstability-
Palavras-chave: dc.subjectstable isotopes-
Título: dc.titleUntangling the complex food webs of tropical rainforest streams-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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