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dc.contributor.author Hoeinghaus, David Joseph
dc.contributor.author Vieira Sobrinho, João Paes
dc.contributor.author Costa, César Serra Bonifácio
dc.contributor.author Bemvenuti, Carlos Emílio
dc.contributor.author Winemiller, Kirk
dc.contributor.author Garcia, Alexandre Miranda
dc.date.accessioned 2012-03-09T23:32:44Z
dc.date.available 2012-03-09T23:32:44Z
dc.date.issued 2011
dc.identifier.citation HOEINGHAUS, David Joseph et al. Estuary hydrogeomorphology affects carbon sources supporting aquatic consumers within and among ecological guilds. Hydrobiologia, v. 673, p. 79–92, 2011. Disponível em: <http://wfsc.tamu.edu/winemiller/lab/PDFs/Hoeinghaus%20et%20al.%202011%20Estuary%20hydrogeomorphology%20.pdf>. Acesso em: 10 jan. 2012. pt_BR
dc.identifier.uri http://repositorio.furg.br/handle/1/1866
dc.description.abstract The relative importance of carbon sources supporting aquatic food webs within and among estuaries may be influenced by factors that affect relative availability of autotrophic carbon sources, as well as movement of individuals among marine, estuarine and freshwater zones. We used stable isotopes of carbon and nitrogen to examine (1) the relative importance of carbon sources supporting estuarine consumers among estuaries with different hydrogeomorphic characteristics, (2) stable isotope signatures of consumer ecological guilds defined by dependence on estuarine habitats and residence time, and (3) if patterns in stable isotope signatures of ecological guilds repeat across estuaries with distinct hydrogeomorphological features. At the assemblage level, consumer carbon isotope signatures reflected the consumption of locally abundant primary production sources and differed across estuary types (choked lagoon, coastal river). Consumer ecological guilds differed in d13C within sites, and the same trend repeated across sites but with differing magnitudes. This variation is attributed to movement and residence patterns in addition to differences in the relative abundances of autotrophic sources across sites. Although within-estuary variation in consumer resource use is to be expected, estuarine food webs may be broadly classified according to landscapescale hydrogeomorphic factors that allow an initial prediction of the relative importance of carbon sources to secondary production. Predictions may be refined at the species level using knowledge of habitat use and residence time. Such predictions are useful as a starting point for poorly studied regions such as ours in southern Brazil, as well as for globalscale analyses of patterns in estuarine food webs. pt_BR
dc.language.iso eng pt_BR
dc.rights open access pt_BR
dc.subject Brazil pt_BR
dc.subject Food web pt_BR
dc.subject Migration pt_BR
dc.subject Salt marsh pt_BR
dc.subject South America pt_BR
dc.subject Subsidies pt_BR
dc.title Estuary hydrogeomorphology affects carbon sources supporting aquatic consumers within and among ecological guilds pt_BR
dc.type article pt_BR
dc.identifier.doi DOI 10.1007/s10750-011-0751-z pt_BR


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