Benthic macroinvertebrates and degradation of phytomass as indicators of ecosystem functions in flooded rice cropping
| Autor(a) principal: | |
|---|---|
| Data de Publicação: | 2017 |
| Outros Autores: | , |
| Tipo de documento: | Artigo |
| Idioma: | eng |
| Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
| Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/24108 |
Resumo: | The objective of this work was to evaluate the ecosystem functions of a natural wetland and of artificially flooded rice areas, managed under organic and conventional systems, by phytomass degradation and by the colonization of this material by benthic macroinvertebrates. The experiment was carried out in a natural wetland area, and in two flooded rice areas managed under organic and conventional systems. Twenty-five decomposition bags filled with 10 g of dry vegetation were installed in each site. At 14, 28, 42, 56, and 70 days after the beginning of the experiment, five bags from each site were collected. Macroinvertebrates were identified and classified by functional trophic group. The number of species of benthic macroinvertebrates increased: natural wetland > organic system > conventional system. The Chironomidae group was present in all areas, confirming its food plasticity and adaptability to different substrates and environmental stress situations. The Amphipoda group was present only in the artificially flooded rice area, and the Acari, only in the natural wetland. The diversity of species in the natural wetland area was higher than in the artificially flooded rice area. Nutrient cycling, provided by phytomass decomposition, is affected by the management system, and the delay in this process causes a reduction of the ecosystem functions in the conventional system. |
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Benthic macroinvertebrates and degradation of phytomass as indicators of ecosystem functions in flooded rice croppingMacroinvertebrados bentônicos e degradação da fitomassa como indicadores de funções ecossistêmicas em arroz irrigado por inundaçãoOryza sativa; Aqualf; biomass degradation; ecosystem services; nutrient cycling; paddy soilsOryza sativa; Planossolos; degradação da biomassa; serviços ecossistêmicos; ciclagem de nutrientes; solos de várzeaThe objective of this work was to evaluate the ecosystem functions of a natural wetland and of artificially flooded rice areas, managed under organic and conventional systems, by phytomass degradation and by the colonization of this material by benthic macroinvertebrates. The experiment was carried out in a natural wetland area, and in two flooded rice areas managed under organic and conventional systems. Twenty-five decomposition bags filled with 10 g of dry vegetation were installed in each site. At 14, 28, 42, 56, and 70 days after the beginning of the experiment, five bags from each site were collected. Macroinvertebrates were identified and classified by functional trophic group. The number of species of benthic macroinvertebrates increased: natural wetland > organic system > conventional system. The Chironomidae group was present in all areas, confirming its food plasticity and adaptability to different substrates and environmental stress situations. The Amphipoda group was present only in the artificially flooded rice area, and the Acari, only in the natural wetland. The diversity of species in the natural wetland area was higher than in the artificially flooded rice area. Nutrient cycling, provided by phytomass decomposition, is affected by the management system, and the delay in this process causes a reduction of the ecosystem functions in the conventional system.O objetivo deste trabalho foi avaliar as funções ecossistêmicas de um banhado natural e de lavouras de arroz irrigado por inundação, manejadas nos sistemas convencional e orgânico, por meio da degradação da fitomassa e da colonização desse material por macroinvertebrados bentônicos. O experimento foi realizado em um banhado natural e em duas áreas de arroz irrigado por inundação, manejadas em sistemas orgânico e convencional. Vinte e cinco bolsas de decomposição, cada uma preenchida com 10 g de palha seca, foram instaladas em cada local. Aos 14, 28, 42, 56 e 70 dias após o início do experimento, cinco bolsas de cada local foram retiradas. Os macroinvertebrados foram identificados e classificados por grupo trófico funcional. O número de espécies de macroinvertebrados bentônicos aumentou: banhado natural > sistema orgânico > sistema convencional. O grupo Chironomidae estava presente em todas as áreas, o que confirma sua plasticidade alimentar e adaptabilidade a diferentes substratos e situações de estresse ambiental. O grupo Amphipoda esteve presente somente nas lavouras de arroz artificialmente inundadas, enquanto o grupo Acari, somente no banhado natural. A diversidade de espécies no banhado natural foi maior do que nas áreas de arroz artificialmente inundadas. A ciclagem de nutrientes, por meio da degradação da fitomassa, é influenciada pelo sistema de manejo, e o atraso nesse processo reduz as funções do ecossistema no sistema convencional.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraEmbrapa Clima TemperadoFundação de Amparo à Pesquisa do Estado do Rio Grande do Sul (Fapergs)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Winckler, Lilian TerezinhaGüths, Angélica KonradtGayer, Pâmela Rodrigues2017-05-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/24108Pesquisa Agropecuaria Brasileira; v.52, n.4, abr. 2017; 261-270Pesquisa Agropecuária Brasileira; v.52, n.4, abr. 2017; 261-2701678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAenghttps://seer.sct.embrapa.br/index.php/pab/article/view/24108/13735https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/24108/16002https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/24108/16375Direitos autorais 2017 Pesquisa Agropecuária Brasileirainfo:eu-repo/semantics/openAccess2017-05-08T12:18:29Zoai:ojs.seer.sct.embrapa.br:article/24108Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2017-05-08T12:18:29Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
| dc.title.none.fl_str_mv |
Benthic macroinvertebrates and degradation of phytomass as indicators of ecosystem functions in flooded rice cropping Macroinvertebrados bentônicos e degradação da fitomassa como indicadores de funções ecossistêmicas em arroz irrigado por inundação |
| title |
Benthic macroinvertebrates and degradation of phytomass as indicators of ecosystem functions in flooded rice cropping |
| spellingShingle |
Benthic macroinvertebrates and degradation of phytomass as indicators of ecosystem functions in flooded rice cropping Winckler, Lilian Terezinha Oryza sativa; Aqualf; biomass degradation; ecosystem services; nutrient cycling; paddy soils Oryza sativa; Planossolos; degradação da biomassa; serviços ecossistêmicos; ciclagem de nutrientes; solos de várzea |
| title_short |
Benthic macroinvertebrates and degradation of phytomass as indicators of ecosystem functions in flooded rice cropping |
| title_full |
Benthic macroinvertebrates and degradation of phytomass as indicators of ecosystem functions in flooded rice cropping |
| title_fullStr |
Benthic macroinvertebrates and degradation of phytomass as indicators of ecosystem functions in flooded rice cropping |
| title_full_unstemmed |
Benthic macroinvertebrates and degradation of phytomass as indicators of ecosystem functions in flooded rice cropping |
| title_sort |
Benthic macroinvertebrates and degradation of phytomass as indicators of ecosystem functions in flooded rice cropping |
| author |
Winckler, Lilian Terezinha |
| author_facet |
Winckler, Lilian Terezinha Güths, Angélica Konradt Gayer, Pâmela Rodrigues |
| author_role |
author |
| author2 |
Güths, Angélica Konradt Gayer, Pâmela Rodrigues |
| author2_role |
author author |
| dc.contributor.none.fl_str_mv |
Embrapa Clima Temperado Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul (Fapergs) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) |
| dc.contributor.author.fl_str_mv |
Winckler, Lilian Terezinha Güths, Angélica Konradt Gayer, Pâmela Rodrigues |
| dc.subject.por.fl_str_mv |
Oryza sativa; Aqualf; biomass degradation; ecosystem services; nutrient cycling; paddy soils Oryza sativa; Planossolos; degradação da biomassa; serviços ecossistêmicos; ciclagem de nutrientes; solos de várzea |
| topic |
Oryza sativa; Aqualf; biomass degradation; ecosystem services; nutrient cycling; paddy soils Oryza sativa; Planossolos; degradação da biomassa; serviços ecossistêmicos; ciclagem de nutrientes; solos de várzea |
| description |
The objective of this work was to evaluate the ecosystem functions of a natural wetland and of artificially flooded rice areas, managed under organic and conventional systems, by phytomass degradation and by the colonization of this material by benthic macroinvertebrates. The experiment was carried out in a natural wetland area, and in two flooded rice areas managed under organic and conventional systems. Twenty-five decomposition bags filled with 10 g of dry vegetation were installed in each site. At 14, 28, 42, 56, and 70 days after the beginning of the experiment, five bags from each site were collected. Macroinvertebrates were identified and classified by functional trophic group. The number of species of benthic macroinvertebrates increased: natural wetland > organic system > conventional system. The Chironomidae group was present in all areas, confirming its food plasticity and adaptability to different substrates and environmental stress situations. The Amphipoda group was present only in the artificially flooded rice area, and the Acari, only in the natural wetland. The diversity of species in the natural wetland area was higher than in the artificially flooded rice area. Nutrient cycling, provided by phytomass decomposition, is affected by the management system, and the delay in this process causes a reduction of the ecosystem functions in the conventional system. |
| publishDate |
2017 |
| dc.date.none.fl_str_mv |
2017-05-08 |
| dc.type.none.fl_str_mv |
|
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
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article |
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publishedVersion |
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https://seer.sct.embrapa.br/index.php/pab/article/view/24108 |
| url |
https://seer.sct.embrapa.br/index.php/pab/article/view/24108 |
| dc.language.iso.fl_str_mv |
eng |
| language |
eng |
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https://seer.sct.embrapa.br/index.php/pab/article/view/24108/13735 https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/24108/16002 https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/24108/16375 |
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Direitos autorais 2017 Pesquisa Agropecuária Brasileira info:eu-repo/semantics/openAccess |
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Direitos autorais 2017 Pesquisa Agropecuária Brasileira |
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openAccess |
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application/pdf |
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Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
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Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
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Pesquisa Agropecuaria Brasileira; v.52, n.4, abr. 2017; 261-270 Pesquisa Agropecuária Brasileira; v.52, n.4, abr. 2017; 261-270 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
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