caa a22 4500 445891076 CHVBK 20180317145616.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s10750-011-0751-z doi (NATIONALLICENCE)springer-10.1007/s10750-011-0751-z Estuary hydrogeomorphology affects carbon sources supporting aquatic consumers within and among ecological guilds [Elektronische Daten] [D. Hoeinghaus, J. Vieira, C. Costa, C. Bemvenuti, K. Winemiller, A. Garcia] 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 δ13C 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 landscape-scale 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 global-scale analyses of patterns in estuarine food webs. Springer Science+Business Media B.V., 2011 Brazil nationallicence Food web nationallicence Migration nationallicence Salt marsh nationallicence South America nationallicence Subsidies nationallicence Hoeinghaus D. Department of Biological Sciences, Institute of Applied Sciences, University of North Texas, 1155 Union Circle #310559, 76203-5017, Denton, TX, USA aut Vieira J. Instituto de Oceanografia, Universidade Federal de Rio Grande—FURG, CP 474, Rio Grande, RS, Brazil aut Costa C. Instituto de Oceanografia, Universidade Federal de Rio Grande—FURG, CP 474, Rio Grande, RS, Brazil aut Bemvenuti C. Instituto de Oceanografia, Universidade Federal de Rio Grande—FURG, CP 474, Rio Grande, RS, Brazil aut Winemiller K. Section of Ecology and Evolutionary Biology, Department of Wildlife and Fisheries Sciences, Texas A&M University, 77843-2258, College Station, TX, USA aut Garcia A. Instituto de Oceanografia, Universidade Federal de Rio Grande—FURG, CP 474, Rio Grande, RS, Brazil aut Hydrobiologia Springer Netherlands 673/1(2011-09-01), 79-92 0018-8158 673:1<79 2011 673 10750 https://doi.org/10.1007/s10750-011-0751-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-011-0751-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hoeinghaus D. Department of Biological Sciences, Institute of Applied Sciences, University of North Texas, 1155 Union Circle #310559, 76203-5017, Denton, TX, USA aut NATIONALLICENCE 700 1- Vieira J. Instituto de Oceanografia, Universidade Federal de Rio Grande—FURG, CP 474, Rio Grande, RS, Brazil aut NATIONALLICENCE 700 1- Costa C. Instituto de Oceanografia, Universidade Federal de Rio Grande—FURG, CP 474, Rio Grande, RS, Brazil aut NATIONALLICENCE 700 1- Bemvenuti C. Instituto de Oceanografia, Universidade Federal de Rio Grande—FURG, CP 474, Rio Grande, RS, Brazil aut NATIONALLICENCE 700 1- Winemiller K. Section of Ecology and Evolutionary Biology, Department of Wildlife and Fisheries Sciences, Texas A&M University, 77843-2258, College Station, TX, USA aut NATIONALLICENCE 700 1- Garcia A. Instituto de Oceanografia, Universidade Federal de Rio Grande—FURG, CP 474, Rio Grande, RS, Brazil aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 673/1(2011-09-01), 79-92 0018-8158 673:1<79 2011 673 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer