Integrating ontogenetic shift, growth and mortality to determine a species' ecological role from isotopic signatures
dc.contributor.author | Fontoura, Nelson Ferreira | pt_BR |
dc.contributor.author | Rodrigues, Lúcia Helena Ribeiro | pt_BR |
dc.contributor.author | Rosemberg, Cibele Boeira Batista | pt_BR |
dc.contributor.author | Persch, Tanilene Sotero Pinto | pt_BR |
dc.contributor.author | Janowicz, Mariola E. | pt_BR |
dc.date.accessioned | 2018-07-12T02:25:55Z | pt_BR |
dc.date.issued | 2015 | pt_BR |
dc.identifier.issn | 1932-6203 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/180388 | pt_BR |
dc.description.abstract | Understanding species linkages and energy transfer is a basic goal underlying any attempt at ecosystem analysis. Although the first food-web studies were based on gut contents of captured specimens, the assessment of stable isotopes, mainly δ13C and δ15N, has become a standard methodology for wide-range analyses in the last 30 years. Stable isotopes provide information on the trophic level of species, food-web length, and origin of organic matter ingested by consumers. In this study, we analyzed the ontogenetic variability of δ13C and δ15N obtained from samples of three Neotropical fish species: silver sardine (Lycengraulis grossidens, n=46), white lambari (Cyanocharax alburnus, n= 26), and the red-tail lambari (Astyanax fasciatus, n=23) in Pinguela Lagoon, southern Brazil. We developed a new metric, called the Weighted Isotopic Signature (φ 15N or φ 13C,‰), that incorporates ontogenetic variability, body growth, and natural mortality into a single number. | en |
dc.format.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | PLOS ONE. San Francisco. Vol. 10, n. 5 (May 2015), e0125059, 11 p. | pt_BR |
dc.rights | Open Access | en |
dc.subject | Ontogenética | pt_BR |
dc.subject | Cadeias alimentares | pt_BR |
dc.subject | Mortalidade animal | pt_BR |
dc.subject | Isótopos estáveis | pt_BR |
dc.subject | Dinâmica populacional | pt_BR |
dc.subject | Peixes | pt_BR |
dc.subject | Modelagem ecológica | pt_BR |
dc.subject | Ecossistemas aquáticos | pt_BR |
dc.subject | Lagoas | pt_BR |
dc.subject | Níveis tróficos | pt_BR |
dc.subject | Desenvolvimento animal | pt_BR |
dc.title | Integrating ontogenetic shift, growth and mortality to determine a species' ecological role from isotopic signatures | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 001072209 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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