Data/hora: 25/06/2024 13:47:16

Biblioteca(s): | Embrapa Unidades Centrais.
Data corrente: | 16/05/2017
Data da última atualização: | 16/05/2017
Autoria: | WINCKLER-SOSINSKI, L.T.; GUTHS, A. K.; GAYER, P. R.
Afiliação: | LILIAN TEREZINHA WINCKLER SOSINSKI, CPACT; ANGÉLICA KONRADT GUTHS, UFPel; PÂMELA RODRIGUES GAYER, Instituto Federal Sul-rio-grandense.
Título: | Benthic macroinvertebrates and degradation of phytomass as indicators of ecosystem functions in flooded rice cropping.
Ano de publicação: | 2017
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, Brasília, DF, v. 52, n. 4, p. 261-270, abr. 2017.
Idioma: | Inglês
Notas: | Título em português:  Macroinvertebrados betônicos e degradação da fitomassa como indicadores de funções ecossistêmicas em arroz irrigado por inundação.
Conteúdo: | 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.
Palavras-Chave: | Ciclagem de nutriente; Degradação da biomassa; Serviço ecossistêmico; Solo de várzea.
Thesagro: | Oryza Sativa; Planossolo.
Thesaurus Nal: | Aqualfs; Biogeochemical cycles; Ecosystem services; Paddy soils.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/159901/1/Benthic-macroinvertebrates.pdf
Registro original: | Embrapa Unidades Centrais (AI-SEDE)
Exemplares: | AI-SEDE - (61248-1) - UPE - AP - DD - 630.72081 - P474 -  - DIS