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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
23/09/2008 |
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Data da última atualização: |
23/09/2008 |
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Autoria: |
RODRIGUES, K. de M.; CORREIA, M. E. F.; RESENDE, A. S. de; CAMPELLO, E. F. C. |
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Título: |
Evaluation of epigeous soil fauna at recovered gullies with leguminous trees in Pinheiral Municipality, Rio de Janeiro state, Brazil. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: INTERNATIONAL COLLOQUIUM ON SOIL ZOOLOGY, 15; INTERNATIONAL COLLOQUIUM ON APTERYGOTA, 12., 2008, Curitiba. Biodiversity, conservation and sustainabele management of soil animal: abstracts. Colombo: Embrapa Florestas. Editors: George Gardner Brown; Klaus Dieter Sautter; Renato Marques; Amarildo Pasini. 1 CD-ROM. |
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Idioma: |
Inglês |
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Conteúdo: |
The Municipality of Pinheiral located at the middle valley of Paraiba do Sul river, was at first of all
exploited in natural resources. Later in the colonial period, the coffee occupied the land until its
decline, followed by extensive livestock, predominant at present days (MENEZES, 1999).
Throughout this range of situations, the region have suffered a huge land degradation process,
mainly caused by severe erosions. This study was performed in a eroded area (gully) reclaimed
by reforestation with leguminous trees. The objective of this work was evaluate the state of
landscape reclamation using the epigeous soil fauna as a bioindicator. The following treatments
were evaluated: acacia trees stand, mimosas trees stand, the hill slope top part, inside the gully
with a mix of leguminous trees. It was also evaluated a secondary forest with 20 years near by
the site of the erosion as a reference area. Soil fauna was sampled at May 2000 and June
2006, using Pitfall traps (MOLDENKE, 1994).
In 2000 sampling the highest value for average richness was observed in the secondary forest
with nine groups found. In 2006 sampling, the average richness for the mimosas stand, the top
part of the hill slope and gully were similar to forest. There was an increase in the number of
groups found from 2000 to 2006 sampling, which shows a improvement in the reclamation
process and system stability. It was observed increases from 38 to 110% in total richness. At the
acacia trees stand there was an intense colonization of ants, which had a negative effect on the
values of the of Shannon-Weaver and Pielou indices. These results show an evolution in the
reclamation process and how soil fauna is responsive to biotic factors present in the medium.
Based on the principal components analysis (PCA) it was clear the difference between the
years 2000 and 2006, since they were in total opposition. The mimosas trees stand was the
treatment that showed high degree of regeneration according to the PCA, being close to the
forest. The most of fauna groups were associated secondary forest and the mimosas trees
stand. MenosThe Municipality of Pinheiral located at the middle valley of Paraiba do Sul river, was at first of all
exploited in natural resources. Later in the colonial period, the coffee occupied the land until its
decline, followed by extensive livestock, predominant at present days (MENEZES, 1999).
Throughout this range of situations, the region have suffered a huge land degradation process,
mainly caused by severe erosions. This study was performed in a eroded area (gully) reclaimed
by reforestation with leguminous trees. The objective of this work was evaluate the state of
landscape reclamation using the epigeous soil fauna as a bioindicator. The following treatments
were evaluated: acacia trees stand, mimosas trees stand, the hill slope top part, inside the gully
with a mix of leguminous trees. It was also evaluated a secondary forest with 20 years near by
the site of the erosion as a reference area. Soil fauna was sampled at May 2000 and June
2006, using Pitfall traps (MOLDENKE, 1994).
In 2000 sampling the highest value for average richness was observed in the secondary forest
with nine groups found. In 2006 sampling, the average richness for the mimosas stand, the top
part of the hill slope and gully were similar to forest. There was an increase in the number of
groups found from 2000 to 2006 sampling, which shows a improvement in the reclamation
process and system stability. It was observed increases from 38 to 110% in total richness. At the
acacia trees stand there was an int... Mostrar Tudo |
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Categoria do assunto: |
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Marc: |
LEADER 02892naa a2200157 a 4500
001 1314886
005 2008-09-23
008 2008 bl uuuu u00u1 u #d
100 1 $aRODRIGUES, K. de M.
245 $aEvaluation of epigeous soil fauna at recovered gullies with leguminous trees in Pinheiral Municipality, Rio de Janeiro state, Brazil.
260 $c2008
520 $aThe Municipality of Pinheiral located at the middle valley of Paraiba do Sul river, was at first of all exploited in natural resources. Later in the colonial period, the coffee occupied the land until its decline, followed by extensive livestock, predominant at present days (MENEZES, 1999). Throughout this range of situations, the region have suffered a huge land degradation process, mainly caused by severe erosions. This study was performed in a eroded area (gully) reclaimed by reforestation with leguminous trees. The objective of this work was evaluate the state of landscape reclamation using the epigeous soil fauna as a bioindicator. The following treatments were evaluated: acacia trees stand, mimosas trees stand, the hill slope top part, inside the gully with a mix of leguminous trees. It was also evaluated a secondary forest with 20 years near by the site of the erosion as a reference area. Soil fauna was sampled at May 2000 and June 2006, using Pitfall traps (MOLDENKE, 1994). In 2000 sampling the highest value for average richness was observed in the secondary forest with nine groups found. In 2006 sampling, the average richness for the mimosas stand, the top part of the hill slope and gully were similar to forest. There was an increase in the number of groups found from 2000 to 2006 sampling, which shows a improvement in the reclamation process and system stability. It was observed increases from 38 to 110% in total richness. At the acacia trees stand there was an intense colonization of ants, which had a negative effect on the values of the of Shannon-Weaver and Pielou indices. These results show an evolution in the reclamation process and how soil fauna is responsive to biotic factors present in the medium. Based on the principal components analysis (PCA) it was clear the difference between the years 2000 and 2006, since they were in total opposition. The mimosas trees stand was the treatment that showed high degree of regeneration according to the PCA, being close to the forest. The most of fauna groups were associated secondary forest and the mimosas trees stand.
700 1 $aCORREIA, M. E. F.
700 1 $aRESENDE, A. S. de
700 1 $aCAMPELLO, E. F. C.
773 $tIn: INTERNATIONAL COLLOQUIUM ON SOIL ZOOLOGY, 15; INTERNATIONAL COLLOQUIUM ON APTERYGOTA, 12., 2008, Curitiba. Biodiversity, conservation and sustainabele management of soil animal: abstracts. Colombo: Embrapa Florestas. Editors: George Gardner Brown; Klaus Dieter Sautter; Renato Marques; Amarildo Pasini. 1 CD-ROM.
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Registro original: |
Embrapa Florestas (CNPF) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental; Embrapa Meio Ambiente. |
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Data corrente: |
30/09/2011 |
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Data da última atualização: |
04/10/2011 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
SOUSA, E. dos S.; SALIMON, C. I.; FIGUEIREDO, R. de O.; KRUSCHE, A. V. |
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Afiliação: |
Eliete dos Santos Sousa, UFPA; Cleber Ibraim Salimon, UFAC; RICARDO DE OLIVEIRA FIGUEIREDO, CNPMA; Alex Vladimir Krusche, CENA/USP. |
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Título: |
Dissolved carbon in an urban area of a river in the Brazilian Amazon. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Biogeochemistry, Dordrecht, v. 105, p. 159-170, 2011. |
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Idioma: |
Inglês |
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Conteúdo: |
The main objective of this study was to evaluate dissolved organic and inorganic carbon dynamics along upstream and downstream reaches of the Acre River draining the city of Rio Branco, in the state of Acre, Brazil. Dissolved organic carbon (DOC) concentrations in the Acre River were significantly higher during the wet season, ranging from 385 ± 160 to 430 ± 131 IJM among the stations, with no difference in upstream and downstream concentrations. Dissolved inorganic carbon (DIC) showed an inverse pattern, with higher concentrations in the dry season, ranging from 816 ± 215 to 998 ± 754 IJM among the stations, as well as no difference in upstream and downstream DIC concentrations. Bicarbonate was the dorninant DIC fraction and was mainly observed during the dry season. Due to lower pH values during the wet season, CO2 partial pressure (PC02) in the Acre Ri ver was higher in the wet season, with values ranging from 4,567 ± 1,813 to 4,893 ± 837 ppm among the stations. Our results indicate that, although the Acre River drains a large city with significant sewage disposal into the river, seasonal hydrological processes are the main driver of dissolved carbon dynarnics, even in the downstream study reach directly influenced by urbanization. |
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Palavras-Chave: |
Acre River; Amazon; Carbono dissolvido; Dissolved carbon; Seasonal variations; Urban impacts; Variações sazonais. |
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Thesagro: |
Carbono; Qualidade da água; Rio. |
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Thesaurus NAL: |
Dissolved organic carbon; Rivers; Seasonal variation. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02130naa a2200313 a 4500
001 1901878
005 2011-10-04
008 2011 bl uuuu u00u1 u #d
100 1 $aSOUSA, E. dos S.
245 $aDissolved carbon in an urban area of a river in the Brazilian Amazon.$h[electronic resource]
260 $c2011
520 $aThe main objective of this study was to evaluate dissolved organic and inorganic carbon dynamics along upstream and downstream reaches of the Acre River draining the city of Rio Branco, in the state of Acre, Brazil. Dissolved organic carbon (DOC) concentrations in the Acre River were significantly higher during the wet season, ranging from 385 ± 160 to 430 ± 131 IJM among the stations, with no difference in upstream and downstream concentrations. Dissolved inorganic carbon (DIC) showed an inverse pattern, with higher concentrations in the dry season, ranging from 816 ± 215 to 998 ± 754 IJM among the stations, as well as no difference in upstream and downstream DIC concentrations. Bicarbonate was the dorninant DIC fraction and was mainly observed during the dry season. Due to lower pH values during the wet season, CO2 partial pressure (PC02) in the Acre Ri ver was higher in the wet season, with values ranging from 4,567 ± 1,813 to 4,893 ± 837 ppm among the stations. Our results indicate that, although the Acre River drains a large city with significant sewage disposal into the river, seasonal hydrological processes are the main driver of dissolved carbon dynarnics, even in the downstream study reach directly influenced by urbanization.
650 $aDissolved organic carbon
650 $aRivers
650 $aSeasonal variation
650 $aCarbono
650 $aQualidade da água
650 $aRio
653 $aAcre River
653 $aAmazon
653 $aCarbono dissolvido
653 $aDissolved carbon
653 $aSeasonal variations
653 $aUrban impacts
653 $aVariações sazonais
700 1 $aSALIMON, C. I.
700 1 $aFIGUEIREDO, R. de O.
700 1 $aKRUSCHE, A. V.
773 $tBiogeochemistry, Dordrecht$gv. 105, p. 159-170, 2011.
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