Scaling relations in food webs

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorBarbosa, Lauro Antônio-
Autor(es): dc.creatorSilva, Alcides Volpato Carneiro de Castro e-
Autor(es): dc.creatorSilva, Jafferson Kamphorst Leal da-
Data de aceite: dc.date.accessioned2019-11-06T13:24:01Z-
Data de disponibilização: dc.date.available2019-11-06T13:24:01Z-
Data de envio: dc.date.issued2012-06-19-
Data de envio: dc.date.issued2012-06-19-
Data de envio: dc.date.issued2006-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/123456789/879-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/554594-
Descrição: dc.descriptionIn the last three decades, researchers have tried to identify universal patterns in the structure of food webs. It was recently proposed that the exponent _ characterizing the efficiency of the transport of energy in large and small food webs might have a universal value __ =1.13_. In this work we establish lower and upper bounds for this exponent in a general spanning tree with a fixed number of trophic species and levels. When the number of species is large, the lower and upper bounds are equal to 1, implying that the result _ =1.13 is due to finite-size effects and that the value of this exponent depends on the size of the web. We also evaluate analytically and numerically the exponent _ for hierarchical and random networks. In all cases the exponent _ depends on the number of trophic species K, and when K is large we have that _→1. Moreover, this result holds for any fixed number M of trophic levels.-
Idioma: dc.languageen-
Direitos: dc.rightsO periódico Physical Review E permite o depósito da versão PDF do editor Repositório Institucional. Fonte: Sherpa/Romeo <http://www.sherpa.ac.uk/romeo/search.php?issn=1539-3755> Acesso em 15 dez. 2013.-
Título: dc.titleScaling relations in food webs-
Aparece nas coleções:Repositório Institucional - UFOP

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