Preliminary examination of food web structure of Nicola Lake (Taim Hydrological System, south Brazil) using dual C and N stable isotope analyses

Detalhes bibliográficos
Autor(a) principal: Garcia, Alexandre Miranda
Data de Publicação: 2006
Outros Autores: Hoeinghaus, David Joseph, Vieira Sobrinho, João Paes, Winemiller, Kirk, Marques, David Manuel Lélinho da Motta, Bemvenuti, Marlise de Azevedo
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da FURG (RI FURG)
Texto Completo: http://repositorio.furg.br/handle/1/2874
http://dx.doi.org/10.1590/S1679-62252006000200014
Resumo: Taim Ecological Reserve is located within the Taim Hydrological System and was created to protect a heterogeneous and productive landscape harboring exceptional biological diversity in southern Brazil. Using stable isotope ratio analyses of carbon (13C) and nitrogen (15N), we provide a preliminary description of the food web structure, including estimates of production sources supporting fish populations and vertical trophic structure, within a representative lake of this system. A total of 21 organisms (5 macrophytes, 3 mollusks and 13 adult fishes) representing 16 species were collected for isotope analysis. Fishes had 13C values ranging from -24.30 ‰ to -28.31 ‰, showing concordance with the range of values observed for macrophytes (-25.49 to -27.10 ‰), and suggesting that these plants could be a major carbon source supporting these fishes. 13C signatures of Corbicula (-30.81‰) and Pomacea (-24.26‰) indirectly suggest that phytoplankton and benthic algae could be alternative carbon sources for some consumers. Nitrogen isotope ratios indicated approximately three consumer trophic levels. The pearl cichlid Geophagus brasiliensis was a primary consumer. Two catfishes (Trachelyopterus lucenai and Loricariichthys anus) were secondary consumers. Two congeneric pike cichclids (Crenicichla lepidota and C. punctata), a catfish (Pimelodus maculatus) and the characids Astyanax fasciatus and Oligosarcus robustus were tertiary consumers. Further studies including additional primary producers and consumers and greater sample numbers should be conducted to provide a more complete and detailed description of food web structure and dynamics within the reserve.
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spelling Preliminary examination of food web structure of Nicola Lake (Taim Hydrological System, south Brazil) using dual C and N stable isotope analysesSubtropical wetlandNeotropical fishesPatos-Mirim Lagoon complexLong-Term Ecological Research (LTER)Brazilian Long Term Ecological Research (PELD)Taim Ecological Reserve is located within the Taim Hydrological System and was created to protect a heterogeneous and productive landscape harboring exceptional biological diversity in southern Brazil. Using stable isotope ratio analyses of carbon (13C) and nitrogen (15N), we provide a preliminary description of the food web structure, including estimates of production sources supporting fish populations and vertical trophic structure, within a representative lake of this system. A total of 21 organisms (5 macrophytes, 3 mollusks and 13 adult fishes) representing 16 species were collected for isotope analysis. Fishes had 13C values ranging from -24.30 ‰ to -28.31 ‰, showing concordance with the range of values observed for macrophytes (-25.49 to -27.10 ‰), and suggesting that these plants could be a major carbon source supporting these fishes. 13C signatures of Corbicula (-30.81‰) and Pomacea (-24.26‰) indirectly suggest that phytoplankton and benthic algae could be alternative carbon sources for some consumers. Nitrogen isotope ratios indicated approximately three consumer trophic levels. The pearl cichlid Geophagus brasiliensis was a primary consumer. Two catfishes (Trachelyopterus lucenai and Loricariichthys anus) were secondary consumers. Two congeneric pike cichclids (Crenicichla lepidota and C. punctata), a catfish (Pimelodus maculatus) and the characids Astyanax fasciatus and Oligosarcus robustus were tertiary consumers. Further studies including additional primary producers and consumers and greater sample numbers should be conducted to provide a more complete and detailed description of food web structure and dynamics within the reserve.A Estação Ecológica do Taim está inserida dentro do Sistema Hidrológico do Taim e foi criada para proteger uma regiã heterogênea e produtiva no sul do Brasil, abrigando uma diversidade biológica excepcional. A partir da análise de isótopos estáveis do carbono (13C) e nitrogênio (15N), esse trabalho fornece uma descrição preliminar da estrutura da teia alimentar numa lagoa representativa desse sistema, incluindo estimativas dos produtores primários que sustentam suas populações de peixes e a estrutura trófica vertical. Um total de 21 organismos (5 macrófitas, 3 moluscos e 13 peixes adultos), representando 16 espécies, foram coletados para a análise da composição isotópica. Os peixes tiveram valores de 13C variando entre -24.30 ‰ e -28.31 ‰, com uma amplitude de variação concordante com as macrófitas (-25.49 e -27.10 ‰), sugerindo indiretamente que essas plantas poderiam ser uma fonte de carbono importante para os peixes. As assinaturas 13C de Corbicula (-30.81‰) e Pomacea (-24.26‰) sugerem que fitoplâncton e algas bentônicas podem ser outra fonte de carbono para alguns consumidores. As razões isotópicas do nitrogênio indicaram aproximadamente três níveis tróficos de consumidores. O cará Geophagus brasiliensis foi um consumidor primário, enquanto o penharol Trachelyopterus lucenai e o cascudo-viola Loricariichthys anus foram consumidores secundários. Duas espécies congenéricas de joaninha (Crenicichla lepidota e C. punctata), o pintado Pimelodus maculatus, o lambari Astyanax fasciatus e o dentudo Oligosarcus robustus foram consumidores terciários. Novas investigações, incluindo outros produtores primários e consumidores e um maior número de amostras, deveriam ser conduzidas para propiciar uma descrição mais completa e detalhada da estrutura e dinâmica da teia alimentar no Taim.2012-11-29T16:39:46Z2012-11-29T16:39:46Z2006info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfGARCIA, Alexandre Miranda et al. Preliminary examination of food web structure of Nicola Lake (Taim Hydrological System, south Brazil) using dual C and N stable isotope analyses. Neotropical Ichthyology, v. 4, n.2, p. 279-284, 2006. Disponível em: <http://www.scielo.br/pdf/ni/v4n2/v4n2a14.pdf>. Acesso em: 02 nov. 2012.1679-6225http://repositorio.furg.br/handle/1/2874http://dx.doi.org/10.1590/S1679-62252006000200014engGarcia, Alexandre MirandaHoeinghaus, David JosephVieira Sobrinho, João PaesWinemiller, KirkMarques, David Manuel Lélinho da MottaBemvenuti, Marlise de Azevedoinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da FURG (RI FURG)instname:Universidade Federal do Rio Grande (FURG)instacron:FURG2023-01-17T12:58:33Zoai:repositorio.furg.br:1/2874Repositório InstitucionalPUBhttps://repositorio.furg.br/oai/request || http://200.19.254.174/oai/requestopendoar:2023-01-17T12:58:33Repositório Institucional da FURG (RI FURG) - Universidade Federal do Rio Grande (FURG)false
dc.title.none.fl_str_mv Preliminary examination of food web structure of Nicola Lake (Taim Hydrological System, south Brazil) using dual C and N stable isotope analyses
title Preliminary examination of food web structure of Nicola Lake (Taim Hydrological System, south Brazil) using dual C and N stable isotope analyses
spellingShingle Preliminary examination of food web structure of Nicola Lake (Taim Hydrological System, south Brazil) using dual C and N stable isotope analyses
Garcia, Alexandre Miranda
Subtropical wetland
Neotropical fishes
Patos-Mirim Lagoon complex
Long-Term Ecological Research (LTER)
Brazilian Long Term Ecological Research (PELD)
title_short Preliminary examination of food web structure of Nicola Lake (Taim Hydrological System, south Brazil) using dual C and N stable isotope analyses
title_full Preliminary examination of food web structure of Nicola Lake (Taim Hydrological System, south Brazil) using dual C and N stable isotope analyses
title_fullStr Preliminary examination of food web structure of Nicola Lake (Taim Hydrological System, south Brazil) using dual C and N stable isotope analyses
title_full_unstemmed Preliminary examination of food web structure of Nicola Lake (Taim Hydrological System, south Brazil) using dual C and N stable isotope analyses
title_sort Preliminary examination of food web structure of Nicola Lake (Taim Hydrological System, south Brazil) using dual C and N stable isotope analyses
author Garcia, Alexandre Miranda
author_facet Garcia, Alexandre Miranda
Hoeinghaus, David Joseph
Vieira Sobrinho, João Paes
Winemiller, Kirk
Marques, David Manuel Lélinho da Motta
Bemvenuti, Marlise de Azevedo
author_role author
author2 Hoeinghaus, David Joseph
Vieira Sobrinho, João Paes
Winemiller, Kirk
Marques, David Manuel Lélinho da Motta
Bemvenuti, Marlise de Azevedo
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Garcia, Alexandre Miranda
Hoeinghaus, David Joseph
Vieira Sobrinho, João Paes
Winemiller, Kirk
Marques, David Manuel Lélinho da Motta
Bemvenuti, Marlise de Azevedo
dc.subject.por.fl_str_mv Subtropical wetland
Neotropical fishes
Patos-Mirim Lagoon complex
Long-Term Ecological Research (LTER)
Brazilian Long Term Ecological Research (PELD)
topic Subtropical wetland
Neotropical fishes
Patos-Mirim Lagoon complex
Long-Term Ecological Research (LTER)
Brazilian Long Term Ecological Research (PELD)
description Taim Ecological Reserve is located within the Taim Hydrological System and was created to protect a heterogeneous and productive landscape harboring exceptional biological diversity in southern Brazil. Using stable isotope ratio analyses of carbon (13C) and nitrogen (15N), we provide a preliminary description of the food web structure, including estimates of production sources supporting fish populations and vertical trophic structure, within a representative lake of this system. A total of 21 organisms (5 macrophytes, 3 mollusks and 13 adult fishes) representing 16 species were collected for isotope analysis. Fishes had 13C values ranging from -24.30 ‰ to -28.31 ‰, showing concordance with the range of values observed for macrophytes (-25.49 to -27.10 ‰), and suggesting that these plants could be a major carbon source supporting these fishes. 13C signatures of Corbicula (-30.81‰) and Pomacea (-24.26‰) indirectly suggest that phytoplankton and benthic algae could be alternative carbon sources for some consumers. Nitrogen isotope ratios indicated approximately three consumer trophic levels. The pearl cichlid Geophagus brasiliensis was a primary consumer. Two catfishes (Trachelyopterus lucenai and Loricariichthys anus) were secondary consumers. Two congeneric pike cichclids (Crenicichla lepidota and C. punctata), a catfish (Pimelodus maculatus) and the characids Astyanax fasciatus and Oligosarcus robustus were tertiary consumers. Further studies including additional primary producers and consumers and greater sample numbers should be conducted to provide a more complete and detailed description of food web structure and dynamics within the reserve.
publishDate 2006
dc.date.none.fl_str_mv 2006
2012-11-29T16:39:46Z
2012-11-29T16:39:46Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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status_str publishedVersion
dc.identifier.uri.fl_str_mv GARCIA, Alexandre Miranda et al. Preliminary examination of food web structure of Nicola Lake (Taim Hydrological System, south Brazil) using dual C and N stable isotope analyses. Neotropical Ichthyology, v. 4, n.2, p. 279-284, 2006. Disponível em: <http://www.scielo.br/pdf/ni/v4n2/v4n2a14.pdf>. Acesso em: 02 nov. 2012.
1679-6225
http://repositorio.furg.br/handle/1/2874
http://dx.doi.org/10.1590/S1679-62252006000200014
identifier_str_mv GARCIA, Alexandre Miranda et al. Preliminary examination of food web structure of Nicola Lake (Taim Hydrological System, south Brazil) using dual C and N stable isotope analyses. Neotropical Ichthyology, v. 4, n.2, p. 279-284, 2006. Disponível em: <http://www.scielo.br/pdf/ni/v4n2/v4n2a14.pdf>. Acesso em: 02 nov. 2012.
1679-6225
url http://repositorio.furg.br/handle/1/2874
http://dx.doi.org/10.1590/S1679-62252006000200014
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instname:Universidade Federal do Rio Grande (FURG)
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instname_str Universidade Federal do Rio Grande (FURG)
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reponame_str Repositório Institucional da FURG (RI FURG)
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