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Registro Completo |
Biblioteca(s): |
Embrapa Territorial. |
Data corrente: |
13/07/2022 |
Data da última atualização: |
13/07/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
BARRETO, D. A.; FURTADO, A. L. dos S.; FOLHARINI, S. DE O.; MARINHO, C.; ROCHA, A. DE M.; BOZELLI, R. L.; AZEVEDO, J. P. S. DE; SILVA, L. H. S. |
Afiliação: |
DAVI ALMEIDA BARRETO, UFRJ; ANDRE LUIZ DOS SANTOS FURTADO, CNPM; SAULO DE OLIVEIRA FOLHARINI, UFMT; CLAUDIO MARINHO, UFRJ; ADRIANA DE MELO ROCHA, UFRJ; REINALDO LUIZ BOZELLI, UFRJ; JOSÉ PAULO SOARES DE AZEVEDO, UFRJ; LÚCIA HELENA SAMPAIO SILVA, UFRJ. |
Título: |
Spatial and temporal dynamics of phytoplankton in a highly impacted tropical Montane River. |
Ano de publicação: |
2022 |
Fonte/Imprenta: |
Oecologia Australis, v. 26, n. 2, p. 255-270, 2022. |
ISBN: |
2177-6199 |
DOI: |
https://doi.org/10.4257/oeco.2022.2602.13 |
Idioma: |
Português |
Conteúdo: |
Rivers, as most bodies of water, are subject to eutrophication and water contamination, mainly from domestic sewage and industrial discharges from urban centers and agricultural areas. These growing human impacts result in a gradual loss of water quality and changes in biotic communities, including phytoplankton. Analyzing the dynamics of phytoplankton is important to understand how, in addition to hydrography and the physical, chemical and biological variables, human impact can be a controlling factor in this dynamic. In this study, we analyzed abiotic variables and zooplankton abundance to identify the factors controlling different phytoplankton attributes at six sampling points, in two climatic periods and three years, in the Piabanha River, a slowly flowing stream with to strong human impact beginning in its upper course, in a mountain region in southeastern Brazil. The results showed homogeneous environmental variables and different phytoplankton attributes along most of the stretch analyzed, except for sampling point 1, located in a preserved forest area but with nutrient concentrations limiting phytoplankton growth. The difference in flow between the two climatic periods (dry and wet) was not sufficient to change the total phytoplankton biovolume. Temperature seemed to strongly affect the phytoplankton response, with larger relative contributions from cyanobacteria in the wet period, with higher temperatures, and from phytoflagellates in the dry period, with lower temperatures. As expected, zooplankton showed no influence on phytoplankton dynamics, with a large contribution from small rotifers. In this tropical montane river, with slow flow and intense human impacts, nutrient concentrations and temperature were the main drivers of the spatial and temporal dynamics of phytoplankton, respectively. MenosRivers, as most bodies of water, are subject to eutrophication and water contamination, mainly from domestic sewage and industrial discharges from urban centers and agricultural areas. These growing human impacts result in a gradual loss of water quality and changes in biotic communities, including phytoplankton. Analyzing the dynamics of phytoplankton is important to understand how, in addition to hydrography and the physical, chemical and biological variables, human impact can be a controlling factor in this dynamic. In this study, we analyzed abiotic variables and zooplankton abundance to identify the factors controlling different phytoplankton attributes at six sampling points, in two climatic periods and three years, in the Piabanha River, a slowly flowing stream with to strong human impact beginning in its upper course, in a mountain region in southeastern Brazil. The results showed homogeneous environmental variables and different phytoplankton attributes along most of the stretch analyzed, except for sampling point 1, located in a preserved forest area but with nutrient concentrations limiting phytoplankton growth. The difference in flow between the two climatic periods (dry and wet) was not sufficient to change the total phytoplankton biovolume. Temperature seemed to strongly affect the phytoplankton response, with larger relative contributions from cyanobacteria in the wet period, with higher temperatures, and from phytoflagellates in the dry period, with lower tem... Mostrar Tudo |
Palavras-Chave: |
Flow regime; Piabanha River; Potamoplankton. |
Thesaurus Nal: |
Eutrophication; Water temperature. |
Categoria do assunto: |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1144672/1/6044.pdf
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Marc: |
LEADER 02701naa a2200289 a 4500 001 2144672 005 2022-07-13 008 2022 bl uuuu u00u1 u #d 022 $a2177-6199 024 7 $ahttps://doi.org/10.4257/oeco.2022.2602.13$2DOI 100 1 $aBARRETO, D. A. 245 $aSpatial and temporal dynamics of phytoplankton in a highly impacted tropical Montane River.$h[electronic resource] 260 $c2022 520 $aRivers, as most bodies of water, are subject to eutrophication and water contamination, mainly from domestic sewage and industrial discharges from urban centers and agricultural areas. These growing human impacts result in a gradual loss of water quality and changes in biotic communities, including phytoplankton. Analyzing the dynamics of phytoplankton is important to understand how, in addition to hydrography and the physical, chemical and biological variables, human impact can be a controlling factor in this dynamic. In this study, we analyzed abiotic variables and zooplankton abundance to identify the factors controlling different phytoplankton attributes at six sampling points, in two climatic periods and three years, in the Piabanha River, a slowly flowing stream with to strong human impact beginning in its upper course, in a mountain region in southeastern Brazil. The results showed homogeneous environmental variables and different phytoplankton attributes along most of the stretch analyzed, except for sampling point 1, located in a preserved forest area but with nutrient concentrations limiting phytoplankton growth. The difference in flow between the two climatic periods (dry and wet) was not sufficient to change the total phytoplankton biovolume. Temperature seemed to strongly affect the phytoplankton response, with larger relative contributions from cyanobacteria in the wet period, with higher temperatures, and from phytoflagellates in the dry period, with lower temperatures. As expected, zooplankton showed no influence on phytoplankton dynamics, with a large contribution from small rotifers. In this tropical montane river, with slow flow and intense human impacts, nutrient concentrations and temperature were the main drivers of the spatial and temporal dynamics of phytoplankton, respectively. 650 $aEutrophication 650 $aWater temperature 653 $aFlow regime 653 $aPiabanha River 653 $aPotamoplankton 700 1 $aFURTADO, A. L. dos S. 700 1 $aFOLHARINI, S. DE O. 700 1 $aMARINHO, C. 700 1 $aROCHA, A. DE M. 700 1 $aBOZELLI, R. L. 700 1 $aAZEVEDO, J. P. S. DE 700 1 $aSILVA, L. H. S. 773 $tOecologia Australis$gv. 26, n. 2, p. 255-270, 2022.
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Registro original: |
Embrapa Territorial (CNPM) |
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Biblioteca(s): |
Embrapa Clima Temperado. |
Data corrente: |
03/10/2023 |
Data da última atualização: |
03/10/2023 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
SIQUEIRA, O.; HIRANO, E.; BERTONCINI, O. |
Afiliação: |
OSWALDO SIQUEIRA, CPACT; ELCIO HIRANO, CPACT; ODONE BERTONCINI, SPM - E. Canoinhas. |
Título: |
Levantamento de vírus em solanáceas nativas. |
Ano de publicação: |
1979 |
Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE OLERICULTURA, 19., 1979, Florianópolis. Resumos... Florianópolis: EMPASC: SOB, 1979. v. 2, p. 308-309. |
Idioma: |
Português |
Conteúdo: |
Com a finalidade de identificar os vírus que possam existir na grande população de espécies nativas de solanáceas presentes no ecossistema de Canoinhas, SC e arredores e que podem interferir na fitossanidade de batata Solanum tuberosum tuberosum [...] |
Palavras-Chave: |
Fumo bravo; Joá; Joá-do-mato; Mata cavalo. |
Thesagro: |
Coerana; Erva Moura; Jurubeba; Levantamento Fitossanitário; Solanum Tuberosum; Vírus. |
Thesaurus NAL: |
Solanaceae; Solanum aculeatissimum. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1157042/1/Cpact-Siqueira-Hirano-Bertoncini3.pdf
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Marc: |
LEADER 01072nam a2200277 a 4500 001 2157042 005 2023-10-03 008 1979 bl uuuu u00u1 u #d 100 1 $aSIQUEIRA, O. 245 $aLevantamento de vírus em solanáceas nativas.$h[electronic resource] 260 $aIn: CONGRESSO BRASILEIRO DE OLERICULTURA, 19., 1979, Florianópolis. Resumos... Florianópolis: EMPASC: SOB, 1979. v. 2, p. 308-309.$c1979 520 $aCom a finalidade de identificar os vírus que possam existir na grande população de espécies nativas de solanáceas presentes no ecossistema de Canoinhas, SC e arredores e que podem interferir na fitossanidade de batata Solanum tuberosum tuberosum [...] 650 $aSolanaceae 650 $aSolanum aculeatissimum 650 $aCoerana 650 $aErva Moura 650 $aJurubeba 650 $aLevantamento Fitossanitário 650 $aSolanum Tuberosum 650 $aVírus 653 $aFumo bravo 653 $aJoá 653 $aJoá-do-mato 653 $aMata cavalo 700 1 $aHIRANO, E. 700 1 $aBERTONCINI, O.
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