Transport of marine-derived nutrients to subtropical freshwater food webs by juvenile mullets: a case study in southern Brazil
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da FURG (RI FURG) |
Texto Completo: | http://repositorio.furg.br/handle/1/5727 |
Resumo: | In higher latitudes of the northern hemisphere, anadromous fishes can act as biological vectors, moving marine-derived nutrients into freshwater ecosystems during their reproductive migration. Much less information is available on the potential role of marine and estuarine-related fishes as biological vectors in subtropical latitudes. Here, we investigated whether mullet juveniles might transport marine nutrients into the freshwater food webs of coastal streams in southern Brazil (32°17’S, 52°15’W). To test this hypothesis, we analyzed the stable isotope ratios of carbon (δ13C) and nitrogen (δ15N) in 10 basal production sources and 10 consumer species, including juvenile mullets, at 3 sites (surf zone, lower stream reach, headwater reach) along a marine-freshwater gradient. Our results revealed a significant decreasing trend in δ15N and δ13C values from the sea to the freshwater sites, suggesting an importation and incorporation of marine-derived nutrients into the coastal stream. A mixing model showed a marked shift in assimilation from marine to freshwater production sources by mullet Mugil liza juveniles as they moved from the surf zone into the coastal stream (lower stream and headwater reaches). Our mixing model also indicated that material of marine origin is assimilated by freshwater predators, particularly those found at the lower stream reach. Further experimental and field work is needed to evaluate the implications of marine-derived carbon and nitrogen transport by juvenile mullets for the structure and dynamics of food webs in coastal streams |
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Transport of marine-derived nutrients to subtropical freshwater food webs by juvenile mullets: a case study in southern BrazilBrazilFood web spatial subsidiesFreshwater piscivoreMugil lizaSea-land connectivitySIAR mixing modelsIn higher latitudes of the northern hemisphere, anadromous fishes can act as biological vectors, moving marine-derived nutrients into freshwater ecosystems during their reproductive migration. Much less information is available on the potential role of marine and estuarine-related fishes as biological vectors in subtropical latitudes. Here, we investigated whether mullet juveniles might transport marine nutrients into the freshwater food webs of coastal streams in southern Brazil (32°17’S, 52°15’W). To test this hypothesis, we analyzed the stable isotope ratios of carbon (δ13C) and nitrogen (δ15N) in 10 basal production sources and 10 consumer species, including juvenile mullets, at 3 sites (surf zone, lower stream reach, headwater reach) along a marine-freshwater gradient. Our results revealed a significant decreasing trend in δ15N and δ13C values from the sea to the freshwater sites, suggesting an importation and incorporation of marine-derived nutrients into the coastal stream. A mixing model showed a marked shift in assimilation from marine to freshwater production sources by mullet Mugil liza juveniles as they moved from the surf zone into the coastal stream (lower stream and headwater reaches). Our mixing model also indicated that material of marine origin is assimilated by freshwater predators, particularly those found at the lower stream reach. Further experimental and field work is needed to evaluate the implications of marine-derived carbon and nitrogen transport by juvenile mullets for the structure and dynamics of food webs in coastal streams2015-12-27T00:04:28Z2015-12-27T00:04:28Z2014info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfOLIVEIRA, Mauro César Lamim Martins de et al. Transport of marine-derived nutrients to subtropical freshwater food webs by juvenile mullets: a case study in southern Brazil. Aquatic Biology, v. 20, n. 1, p. 91-100, 2014. Disponível em: <http://www.int-res.com/abstracts/ab/v20/n1/p91-100/>. Acesso em: 1 nov. 2015.1864-7782http://repositorio.furg.br/handle/1/572710.3354/ab00544engOliveira, Mauro César Lamim Martins deBastos, Rodrigo FerreiraClaudino, Marlucy CoelhoAssumpção, Cindy MarquesGarcia, Alexandre Mirandainfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da FURG (RI FURG)instname:Universidade Federal do Rio Grande (FURG)instacron:FURG2015-12-27T00:04:28Zoai:repositorio.furg.br:1/5727Repositório InstitucionalPUBhttps://repositorio.furg.br/oai/request || http://200.19.254.174/oai/requestopendoar:2015-12-27T00:04:28Repositório Institucional da FURG (RI FURG) - Universidade Federal do Rio Grande (FURG)false |
dc.title.none.fl_str_mv |
Transport of marine-derived nutrients to subtropical freshwater food webs by juvenile mullets: a case study in southern Brazil |
title |
Transport of marine-derived nutrients to subtropical freshwater food webs by juvenile mullets: a case study in southern Brazil |
spellingShingle |
Transport of marine-derived nutrients to subtropical freshwater food webs by juvenile mullets: a case study in southern Brazil Oliveira, Mauro César Lamim Martins de Brazil Food web spatial subsidies Freshwater piscivore Mugil liza Sea-land connectivity SIAR mixing models |
title_short |
Transport of marine-derived nutrients to subtropical freshwater food webs by juvenile mullets: a case study in southern Brazil |
title_full |
Transport of marine-derived nutrients to subtropical freshwater food webs by juvenile mullets: a case study in southern Brazil |
title_fullStr |
Transport of marine-derived nutrients to subtropical freshwater food webs by juvenile mullets: a case study in southern Brazil |
title_full_unstemmed |
Transport of marine-derived nutrients to subtropical freshwater food webs by juvenile mullets: a case study in southern Brazil |
title_sort |
Transport of marine-derived nutrients to subtropical freshwater food webs by juvenile mullets: a case study in southern Brazil |
author |
Oliveira, Mauro César Lamim Martins de |
author_facet |
Oliveira, Mauro César Lamim Martins de Bastos, Rodrigo Ferreira Claudino, Marlucy Coelho Assumpção, Cindy Marques Garcia, Alexandre Miranda |
author_role |
author |
author2 |
Bastos, Rodrigo Ferreira Claudino, Marlucy Coelho Assumpção, Cindy Marques Garcia, Alexandre Miranda |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Oliveira, Mauro César Lamim Martins de Bastos, Rodrigo Ferreira Claudino, Marlucy Coelho Assumpção, Cindy Marques Garcia, Alexandre Miranda |
dc.subject.por.fl_str_mv |
Brazil Food web spatial subsidies Freshwater piscivore Mugil liza Sea-land connectivity SIAR mixing models |
topic |
Brazil Food web spatial subsidies Freshwater piscivore Mugil liza Sea-land connectivity SIAR mixing models |
description |
In higher latitudes of the northern hemisphere, anadromous fishes can act as biological vectors, moving marine-derived nutrients into freshwater ecosystems during their reproductive migration. Much less information is available on the potential role of marine and estuarine-related fishes as biological vectors in subtropical latitudes. Here, we investigated whether mullet juveniles might transport marine nutrients into the freshwater food webs of coastal streams in southern Brazil (32°17’S, 52°15’W). To test this hypothesis, we analyzed the stable isotope ratios of carbon (δ13C) and nitrogen (δ15N) in 10 basal production sources and 10 consumer species, including juvenile mullets, at 3 sites (surf zone, lower stream reach, headwater reach) along a marine-freshwater gradient. Our results revealed a significant decreasing trend in δ15N and δ13C values from the sea to the freshwater sites, suggesting an importation and incorporation of marine-derived nutrients into the coastal stream. A mixing model showed a marked shift in assimilation from marine to freshwater production sources by mullet Mugil liza juveniles as they moved from the surf zone into the coastal stream (lower stream and headwater reaches). Our mixing model also indicated that material of marine origin is assimilated by freshwater predators, particularly those found at the lower stream reach. Further experimental and field work is needed to evaluate the implications of marine-derived carbon and nitrogen transport by juvenile mullets for the structure and dynamics of food webs in coastal streams |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014 2015-12-27T00:04:28Z 2015-12-27T00:04:28Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
OLIVEIRA, Mauro César Lamim Martins de et al. Transport of marine-derived nutrients to subtropical freshwater food webs by juvenile mullets: a case study in southern Brazil. Aquatic Biology, v. 20, n. 1, p. 91-100, 2014. Disponível em: <http://www.int-res.com/abstracts/ab/v20/n1/p91-100/>. Acesso em: 1 nov. 2015. 1864-7782 http://repositorio.furg.br/handle/1/5727 10.3354/ab00544 |
identifier_str_mv |
OLIVEIRA, Mauro César Lamim Martins de et al. Transport of marine-derived nutrients to subtropical freshwater food webs by juvenile mullets: a case study in southern Brazil. Aquatic Biology, v. 20, n. 1, p. 91-100, 2014. Disponível em: <http://www.int-res.com/abstracts/ab/v20/n1/p91-100/>. Acesso em: 1 nov. 2015. 1864-7782 10.3354/ab00544 |
url |
http://repositorio.furg.br/handle/1/5727 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da FURG (RI FURG) instname:Universidade Federal do Rio Grande (FURG) instacron:FURG |
instname_str |
Universidade Federal do Rio Grande (FURG) |
instacron_str |
FURG |
institution |
FURG |
reponame_str |
Repositório Institucional da FURG (RI FURG) |
collection |
Repositório Institucional da FURG (RI FURG) |
repository.name.fl_str_mv |
Repositório Institucional da FURG (RI FURG) - Universidade Federal do Rio Grande (FURG) |
repository.mail.fl_str_mv |
|
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1807384381168287744 |