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Registro Completo |
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Biblioteca(s): |
Embrapa Tabuleiros Costeiros. |
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Data corrente: |
08/01/2021 |
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Data da última atualização: |
13/01/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FUJIMOTO, R. Y.; DIAS, H. M.; SOUSA, N. da C.; COUTO, M. V. S. do; SANTOS, R. F. B.; PAIXAO, P. E. G.; CUNHA, F. dos S.; RAMOS, F. M.; SOUSA, K. N. S.; HOLANDA, F. C. |
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Afiliação: |
RODRIGO YUDI FUJIMOTO, CPATC; HENRIQUE MALTA DIAS; NATALINO DA COSTA SOUSA; MARCIA VALERIA SILVA DO COUTO; RUDA FERNANDES BRANDAO SANTOS; PETERSON EMMANUEL GUIMARAES PAIXAO; FERNANDA DOS SANTOS CUNHA; FABRICIO MENEZES RAMOS; KEID NOLAN S. S.; FRANCISCO CARLOS HOLANDA. |
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Título: |
Is there sustainability for satellite ornamental fishing regions? A case study of Guamá River basin, Pará, Brasil. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Fisheries Research, V. 221, 105354, 2020. |
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DOI: |
https://doi.org/10.1016/j.fishres.2019.105354 |
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Idioma: |
Inglês |
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Conteúdo: |
Ornamental fisheries and socio-economic aspects of fishermen in the major fishing regions in Brazil such as the Xingu River have been well studied. However, there is lack of information about the sustainability of ?satellites? (auxiliary) fishing areas, which contribute towards supplying fish for exportation centers as Belém, the Capital of Pará state-Brazil. The ornamental fishery in the Guamá River basin is an example of an important activity that supports the families along the river, but it has low social returns and its sustainability is consequently in jeopardy without government aid. We collected fish samples and environmental data to evaluate the market chain aspects, fishery tools and techniques, fish handling and environmental issues of the region. We observed a reduction in numbers of families involved in the ornamental fishery over time. The intensification of anthro- pogenic impacts reduced the environmental integrity degree of fishing sites have resulted in lower fish diversity. The fishery was characterized by capture of a limited number of loricariids fish where the small ones are pre- ferred. Thus the fishing is more selective and consequently an environmental issue. Economically, income is directly associated to the exportation market, consequently the US dollars value influences the species and quantity of the traded fish. Most of the fishermen work on an informal basis and have no intention to continue in this activity due to the low profits reflected by presence of middlemen which concentrates the profit. Therefore, without a management plan for improvement of fishing, environmental and fish quality, the activity presents risks of unsustainability. Suggestions to ensure the perpetuation of this activity are discussed. MenosOrnamental fisheries and socio-economic aspects of fishermen in the major fishing regions in Brazil such as the Xingu River have been well studied. However, there is lack of information about the sustainability of ?satellites? (auxiliary) fishing areas, which contribute towards supplying fish for exportation centers as Belém, the Capital of Pará state-Brazil. The ornamental fishery in the Guamá River basin is an example of an important activity that supports the families along the river, but it has low social returns and its sustainability is consequently in jeopardy without government aid. We collected fish samples and environmental data to evaluate the market chain aspects, fishery tools and techniques, fish handling and environmental issues of the region. We observed a reduction in numbers of families involved in the ornamental fishery over time. The intensification of anthro- pogenic impacts reduced the environmental integrity degree of fishing sites have resulted in lower fish diversity. The fishery was characterized by capture of a limited number of loricariids fish where the small ones are pre- ferred. Thus the fishing is more selective and consequently an environmental issue. Economically, income is directly associated to the exportation market, consequently the US dollars value influences the species and quantity of the traded fish. Most of the fishermen work on an informal basis and have no intention to continue in this activity due to the low profits reflected by ... Mostrar Tudo |
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Palavras-Chave: |
Pesca ornamental. |
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Thesagro: |
Peixe; Peixe Ornamental; Pesca. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/220068/1/guama-2020.pdf
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Marc: |
LEADER 02640naa a2200289 a 4500
001 2129136
005 2021-01-13
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.fishres.2019.105354$2DOI
100 1 $aFUJIMOTO, R. Y.
245 $aIs there sustainability for satellite ornamental fishing regions? A case study of Guamá River basin, Pará, Brasil.$h[electronic resource]
260 $c2020
520 $aOrnamental fisheries and socio-economic aspects of fishermen in the major fishing regions in Brazil such as the Xingu River have been well studied. However, there is lack of information about the sustainability of ?satellites? (auxiliary) fishing areas, which contribute towards supplying fish for exportation centers as Belém, the Capital of Pará state-Brazil. The ornamental fishery in the Guamá River basin is an example of an important activity that supports the families along the river, but it has low social returns and its sustainability is consequently in jeopardy without government aid. We collected fish samples and environmental data to evaluate the market chain aspects, fishery tools and techniques, fish handling and environmental issues of the region. We observed a reduction in numbers of families involved in the ornamental fishery over time. The intensification of anthro- pogenic impacts reduced the environmental integrity degree of fishing sites have resulted in lower fish diversity. The fishery was characterized by capture of a limited number of loricariids fish where the small ones are pre- ferred. Thus the fishing is more selective and consequently an environmental issue. Economically, income is directly associated to the exportation market, consequently the US dollars value influences the species and quantity of the traded fish. Most of the fishermen work on an informal basis and have no intention to continue in this activity due to the low profits reflected by presence of middlemen which concentrates the profit. Therefore, without a management plan for improvement of fishing, environmental and fish quality, the activity presents risks of unsustainability. Suggestions to ensure the perpetuation of this activity are discussed.
650 $aPeixe
650 $aPeixe Ornamental
650 $aPesca
653 $aPesca ornamental
700 1 $aDIAS, H. M.
700 1 $aSOUSA, N. da C.
700 1 $aCOUTO, M. V. S. do
700 1 $aSANTOS, R. F. B.
700 1 $aPAIXAO, P. E. G.
700 1 $aCUNHA, F. dos S.
700 1 $aRAMOS, F. M.
700 1 $aSOUSA, K. N. S.
700 1 $aHOLANDA, F. C.
773 $tFisheries Research, V. 221, 105354, 2020.
Download
Esconder MarcMostrar Marc Completo |
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Registro original: |
Embrapa Tabuleiros Costeiros (CPATC) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
22/07/2015 |
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Data da última atualização: |
29/03/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
NASCENTE, A. S.; LI, Y.; CRUSCIOL, C. A. C. |
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Afiliação: |
ADRIANO STEPHAN NASCENTE, CNPAF; YUNCONG LI, UNIVERSITY OF FLORIDA; CARLOS ALEXANDRE COSTA CRUSCIOL, UNESP, Botucatu-SP. |
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Título: |
Soil aggregation, organic carbon concentration, and soil bulk density as affected by cover crop species in a no-tillage system. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Revista Brasileira de Ciência do Solo, Viçosa, MG, v. 39, n. 3, p. 871-879, maio/jun. 2015. |
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DOI: |
10.1590/01000683rbcs20140388 |
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Idioma: |
Inglês |
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Conteúdo: |
Soil aggregation and the distribution of total organic carbon (TOC) may be affected by soil tillage and cover crops. The objective of this study was to determine the effects of crop rotation with cover crops on soil aggregation, TOC concentration in the soil aggregate fractions, and soil bulk density under a no-tillage system (NTS) and conventional tillage system (CTS, one plowing and two disking). This was a three-year study with cover crop/rice/cover crop/rice rotations in the Brazilian Cerrado. A randomized block experimental design with six treatments and three replications was used. The cover crops (treatments) were: fallow, Panicum maximum, Brachiaria ruziziensis, Brachiaria brizantha, and millet (Pennisetum glaucum). An additional treatment, fallow plus CTS, was included as a control. Soil samples were collected at the depths of 0.00-0.05 m, 0.05-0.10 m, and 0.10-0.20 m after the second rice harvest. The treatments under the NTS led to greater stability in the soil aggregates (ranging from 86.33 to 95.37 %) than fallow plus CTS (ranging from 74.62 to 85.94 %). Fallow plus CTS showed the highest number of aggregates smaller than 2 mm. The cover crops affected soil bulk density differently, and the millet treatment in the NTS had the lowest values. The cover crops without incorporation provided the greatest accumulation of TOC in the soil surface layers. The TOC concentration was positively correlated with the aggregate stability index in all layers and negatively correlated with bulk density in the 0.00-0.10 m layer. MenosSoil aggregation and the distribution of total organic carbon (TOC) may be affected by soil tillage and cover crops. The objective of this study was to determine the effects of crop rotation with cover crops on soil aggregation, TOC concentration in the soil aggregate fractions, and soil bulk density under a no-tillage system (NTS) and conventional tillage system (CTS, one plowing and two disking). This was a three-year study with cover crop/rice/cover crop/rice rotations in the Brazilian Cerrado. A randomized block experimental design with six treatments and three replications was used. The cover crops (treatments) were: fallow, Panicum maximum, Brachiaria ruziziensis, Brachiaria brizantha, and millet (Pennisetum glaucum). An additional treatment, fallow plus CTS, was included as a control. Soil samples were collected at the depths of 0.00-0.05 m, 0.05-0.10 m, and 0.10-0.20 m after the second rice harvest. The treatments under the NTS led to greater stability in the soil aggregates (ranging from 86.33 to 95.37 %) than fallow plus CTS (ranging from 74.62 to 85.94 %). Fallow plus CTS showed the highest number of aggregates smaller than 2 mm. The cover crops affected soil bulk density differently, and the millet treatment in the NTS had the lowest values. The cover crops without incorporation provided the greatest accumulation of TOC in the soil surface layers. The TOC concentration was positively correlated with the aggregate stability index in all layers and negatively corre... Mostrar Tudo |
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Thesagro: |
Brachiaria brizantha; Brachiaria ruziziensis; Manejo do solo; Panicum maximum; Pennisetum glaucum; Plantio direto. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/126808/1/asn.pdf
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Marc: |
LEADER 02307naa a2200229 a 4500
001 2020254
005 2016-03-29
008 2015 bl uuuu u00u1 u #d
024 7 $a10.1590/01000683rbcs20140388$2DOI
100 1 $aNASCENTE, A. S.
245 $aSoil aggregation, organic carbon concentration, and soil bulk density as affected by cover crop species in a no-tillage system.
260 $c2015
520 $aSoil aggregation and the distribution of total organic carbon (TOC) may be affected by soil tillage and cover crops. The objective of this study was to determine the effects of crop rotation with cover crops on soil aggregation, TOC concentration in the soil aggregate fractions, and soil bulk density under a no-tillage system (NTS) and conventional tillage system (CTS, one plowing and two disking). This was a three-year study with cover crop/rice/cover crop/rice rotations in the Brazilian Cerrado. A randomized block experimental design with six treatments and three replications was used. The cover crops (treatments) were: fallow, Panicum maximum, Brachiaria ruziziensis, Brachiaria brizantha, and millet (Pennisetum glaucum). An additional treatment, fallow plus CTS, was included as a control. Soil samples were collected at the depths of 0.00-0.05 m, 0.05-0.10 m, and 0.10-0.20 m after the second rice harvest. The treatments under the NTS led to greater stability in the soil aggregates (ranging from 86.33 to 95.37 %) than fallow plus CTS (ranging from 74.62 to 85.94 %). Fallow plus CTS showed the highest number of aggregates smaller than 2 mm. The cover crops affected soil bulk density differently, and the millet treatment in the NTS had the lowest values. The cover crops without incorporation provided the greatest accumulation of TOC in the soil surface layers. The TOC concentration was positively correlated with the aggregate stability index in all layers and negatively correlated with bulk density in the 0.00-0.10 m layer.
650 $aBrachiaria brizantha
650 $aBrachiaria ruziziensis
650 $aManejo do solo
650 $aPanicum maximum
650 $aPennisetum glaucum
650 $aPlantio direto
700 1 $aLI, Y.
700 1 $aCRUSCIOL, C. A. C.
773 $tRevista Brasileira de Ciência do Solo, Viçosa, MG$gv. 39, n. 3, p. 871-879, maio/jun. 2015.
Download
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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Origem |
Tipo/Formato |
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