Artigo

Abundance and isotopic composition of planktonic microcrustaceans in a central Amazon floodplain lake: Implications for the trophic dynamics of the plankton community

During the hydrological year from December 2007 to November 2008, monthly samplings in the pelagic, littoral and macrophytes zones were conducted in the Lago Catalão, a floodplain lake receiving a mixture of water from Negro and Solimões Rivers, in front of Manaus city. Taxonomic composition and the...

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Autor principal: Caraballo, Pedro E.
Outros Autores: Forsberg, Bruce Rider, Leite, Rosseval Galdino
Grau: Artigo
Idioma: English
Publicado em: Caldasia 2020
Acesso em linha: https://repositorio.inpa.gov.br/handle/1/15844
id oai:repositorio:1-15844
recordtype dspace
spelling oai:repositorio:1-15844 Abundance and isotopic composition of planktonic microcrustaceans in a central Amazon floodplain lake: Implications for the trophic dynamics of the plankton community Abundancia y composición isotópica de los microcrustáceos planctónicos en un lago de inundación de la Amazonía Central: Implicaciones para la dinámica trófica de la comunidad planctónica Caraballo, Pedro E. Forsberg, Bruce Rider Leite, Rosseval Galdino During the hydrological year from December 2007 to November 2008, monthly samplings in the pelagic, littoral and macrophytes zones were conducted in the Lago Catalão, a floodplain lake receiving a mixture of water from Negro and Solimões Rivers, in front of Manaus city. Taxonomic composition and their relative abundance of the planktonic microcrustaceans community was studied. Natural abundances of carbon (C) and nitrogen (N) stable isotopes were measured to indicate energy sources. Cladocerans were the most abundant, with a relative abundance of 60%, followed by the calanoid and cyclopoid copepods with relative abundances of 29% and 11%, respectively. Diaphanosoma spp. was the dominant cladoceran group during all the sampling periods. Cladocerans were also represented by Moina spp., Ceriodaphnia spp. and Daphnia gessneri. Three genera of calanoid copepods were found: Notodiaptomus spp, Rhacodiaptomus spp., and Argyrodiaptomus spp. The genus Mesocyclops spp. was identified among the cyclopoid copepods. Zooplankton δ13C values indicated that the aquatic macrophyte zone was distinct, with a mean of -27.31‰, which was more enriched than zooplankton in the pelagic and littoral zones, where they had mean δ13C values of -33.11 and -34.66‰, respectively. Overall, analysis of stable isotopes showed that regardless of the pathways, the initial source of carbon for the zooplankton was phytoplankton, with a minimal participation of heterotrophic bacteria. © 2016, Universidad Nacional de Colombia. All rights reserved. 2020-05-19T14:25:50Z 2020-05-19T14:25:50Z 2016 Artigo https://repositorio.inpa.gov.br/handle/1/15844 10.15446/caldasia.v38n1.57835 en Volume 38, Número 1, Pags. 149-164 Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf Caldasia
institution Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection INPA-RI
language English
description During the hydrological year from December 2007 to November 2008, monthly samplings in the pelagic, littoral and macrophytes zones were conducted in the Lago Catalão, a floodplain lake receiving a mixture of water from Negro and Solimões Rivers, in front of Manaus city. Taxonomic composition and their relative abundance of the planktonic microcrustaceans community was studied. Natural abundances of carbon (C) and nitrogen (N) stable isotopes were measured to indicate energy sources. Cladocerans were the most abundant, with a relative abundance of 60%, followed by the calanoid and cyclopoid copepods with relative abundances of 29% and 11%, respectively. Diaphanosoma spp. was the dominant cladoceran group during all the sampling periods. Cladocerans were also represented by Moina spp., Ceriodaphnia spp. and Daphnia gessneri. Three genera of calanoid copepods were found: Notodiaptomus spp, Rhacodiaptomus spp., and Argyrodiaptomus spp. The genus Mesocyclops spp. was identified among the cyclopoid copepods. Zooplankton δ13C values indicated that the aquatic macrophyte zone was distinct, with a mean of -27.31‰, which was more enriched than zooplankton in the pelagic and littoral zones, where they had mean δ13C values of -33.11 and -34.66‰, respectively. Overall, analysis of stable isotopes showed that regardless of the pathways, the initial source of carbon for the zooplankton was phytoplankton, with a minimal participation of heterotrophic bacteria. © 2016, Universidad Nacional de Colombia. All rights reserved.
format Artigo
author Caraballo, Pedro E.
spellingShingle Caraballo, Pedro E.
Abundance and isotopic composition of planktonic microcrustaceans in a central Amazon floodplain lake: Implications for the trophic dynamics of the plankton community
author2 Forsberg, Bruce Rider
Leite, Rosseval Galdino
author2Str Forsberg, Bruce Rider
Leite, Rosseval Galdino
title Abundance and isotopic composition of planktonic microcrustaceans in a central Amazon floodplain lake: Implications for the trophic dynamics of the plankton community
title_short Abundance and isotopic composition of planktonic microcrustaceans in a central Amazon floodplain lake: Implications for the trophic dynamics of the plankton community
title_full Abundance and isotopic composition of planktonic microcrustaceans in a central Amazon floodplain lake: Implications for the trophic dynamics of the plankton community
title_fullStr Abundance and isotopic composition of planktonic microcrustaceans in a central Amazon floodplain lake: Implications for the trophic dynamics of the plankton community
title_full_unstemmed Abundance and isotopic composition of planktonic microcrustaceans in a central Amazon floodplain lake: Implications for the trophic dynamics of the plankton community
title_sort abundance and isotopic composition of planktonic microcrustaceans in a central amazon floodplain lake: implications for the trophic dynamics of the plankton community
publisher Caldasia
publishDate 2020
url https://repositorio.inpa.gov.br/handle/1/15844
_version_ 1787141476460789760
score 11.755432

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