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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: |
LAVELLE, P.; VELASQUEZ, E.; DUBS, F.; GOND, V.; CELINI, L.; MATHIEU, J.; ROULAND, C.; HARRY, M. |
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Título: |
Macrofaunal diversity and soil biogenic aggregation in deforested landscapes of French Guyana. |
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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: |
In three landscape windows representing different uses of the Amazon forest, soil macrofauna
was sampled at 16 points displayed every 200m on a regular grid. At each of the 48 points we
measured macroinvertebrate abundance and species richness in 15 Orders and assessed soil
macro aggregation. Landscape composition and structure were quantified by analysing landscape
maps with the FRAGSTAT programme. Significant co inertia was observed among landscape
variables and species richness in groups. Ants and Coleoptera showed increased species
richness in deforested and highly fragmented areas whereas termites and most litter dwelling
arthropods (Myriapoda, Isopoda) exhibited opposite patterns. Another significant co inercia
was observed among macro invertebrate communities and soil aggregation. This suggests
that changes in landscape affect soil structure and functions associated to this attribute through
changes in macroinvertebrate communities. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01774naa a2200205 a 4500
001 1314916
005 2008-09-23
008 2008 bl uuuu u00u1 u #d
100 1 $aLAVELLE, P.
245 $aMacrofaunal diversity and soil biogenic aggregation in deforested landscapes of French Guyana.
260 $c2008
520 $aIn three landscape windows representing different uses of the Amazon forest, soil macrofauna was sampled at 16 points displayed every 200m on a regular grid. At each of the 48 points we measured macroinvertebrate abundance and species richness in 15 Orders and assessed soil macro aggregation. Landscape composition and structure were quantified by analysing landscape maps with the FRAGSTAT programme. Significant co inertia was observed among landscape variables and species richness in groups. Ants and Coleoptera showed increased species richness in deforested and highly fragmented areas whereas termites and most litter dwelling arthropods (Myriapoda, Isopoda) exhibited opposite patterns. Another significant co inercia was observed among macro invertebrate communities and soil aggregation. This suggests that changes in landscape affect soil structure and functions associated to this attribute through changes in macroinvertebrate communities.
700 1 $aVELASQUEZ, E.
700 1 $aDUBS, F.
700 1 $aGOND, V.
700 1 $aCELINI, L.
700 1 $aMATHIEU, J.
700 1 $aROULAND, C.
700 1 $aHARRY, M.
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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Origem |
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Registro |
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URL |
Voltar
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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: |
08/01/2021 |
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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: |
MEDEIROS, A. de S.; MAIA, S. M. F.; SANTOS, T. C. dos; GOMES, T. C. de A. |
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Afiliação: |
ALADAIR DE SOUZA MEDEIROS; STOECIO MALTA FERREIRA MAIA; THIAGO CANDIDO DOS SANTOS; TAMARA CLAUDIA DE ARAUJO GOMES, CPATC. |
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Título: |
Losses and gains of soil organic carbon in grasslands in the Brazilian semi-arid region. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Scientia Agricola, v.78, n.3, e20190076, 2021. |
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ISSN: |
1678-992X |
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Idioma: |
Inglês |
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Conteúdo: |
Studies show that soil organic carbon (SOC) decreases between 3 % and 9 % in degraded grasslands in tropical regions, mainly due to the absence of techniques to enhance carbon contribution to soils. This study assessed SOC stock change factors for grassland management, specific to the semi-arid region of Brazil. These factors may contribute to a better understanding of SOC dynamics and could be used to improve inventories on GHG emissions. In addition, they could be used for updating default factors used by the Intergovernmental Panel on Climate Change. This study considers both soil sampling and a literature review, and comprises 27 paired comparisons, where the dataset was analyzed using a mixed linear model. For the grassland in the Brazilian semi-arid region, the SOC stock is reduced by between 12 % and 27 % due to inadequate management, overgrazing, and edaphoclimatic conditions of the Brazilian semiarid. However, this depends on aspects, such as land use and soil layer, which represents substantially more severe losses than in other regions of the country. We also found that losses occur during the first five years after conversion of native vegetation. The results also indicateda trend for SOC stocks to recover over time, reaching 4 % after 30 years of use as grassland, probably related to the long period without soil tillage and the role of gramineas root system. |
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Thesagro: |
Carbono; Matéria Orgânica; Pastagem; Solo. |
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Thesaurus NAL: |
Carbon; Organic matter; Soil. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/220073/1/Losses-and-gains.pdf
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Marc: |
LEADER 02085naa a2200253 a 4500
001 2129141
005 2021-01-08
008 2021 bl uuuu u00u1 u #d
022 $a1678-992X
100 1 $aMEDEIROS, A. de S.
245 $aLosses and gains of soil organic carbon in grasslands in the Brazilian semi-arid region.$h[electronic resource]
260 $c2021
520 $aStudies show that soil organic carbon (SOC) decreases between 3 % and 9 % in degraded grasslands in tropical regions, mainly due to the absence of techniques to enhance carbon contribution to soils. This study assessed SOC stock change factors for grassland management, specific to the semi-arid region of Brazil. These factors may contribute to a better understanding of SOC dynamics and could be used to improve inventories on GHG emissions. In addition, they could be used for updating default factors used by the Intergovernmental Panel on Climate Change. This study considers both soil sampling and a literature review, and comprises 27 paired comparisons, where the dataset was analyzed using a mixed linear model. For the grassland in the Brazilian semi-arid region, the SOC stock is reduced by between 12 % and 27 % due to inadequate management, overgrazing, and edaphoclimatic conditions of the Brazilian semiarid. However, this depends on aspects, such as land use and soil layer, which represents substantially more severe losses than in other regions of the country. We also found that losses occur during the first five years after conversion of native vegetation. The results also indicateda trend for SOC stocks to recover over time, reaching 4 % after 30 years of use as grassland, probably related to the long period without soil tillage and the role of gramineas root system.
650 $aCarbon
650 $aOrganic matter
650 $aSoil
650 $aCarbono
650 $aMatéria Orgânica
650 $aPastagem
650 $aSolo
700 1 $aMAIA, S. M. F.
700 1 $aSANTOS, T. C. dos
700 1 $aGOMES, T. C. de A.
773 $tScientia Agricola$gv.78, n.3, e20190076, 2021.
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Registro original: |
Embrapa Tabuleiros Costeiros (CPATC) |
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