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 | Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
18/08/2021 |
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Data da última atualização: |
18/08/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CAMBRAIA NETO, A. J.; RODRIGUES, L. N.; SILVA, D. D. da; ALTHOFF, D. |
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Afiliação: |
ARNALDO JOSÉ CAMBRAIA NETO; LINEU NEIVA RODRIGUES, CPAC; DEMETRIUS DAVID DA SILVA; DANIEL ALTHOFF. |
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Título: |
Impact of climate change on groundwater recharge in a Brazilian Savannah watershed. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Theoretical and Applied Climatology, v. 143, 2021. |
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Páginas: |
p. 1425-1436 |
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Idioma: |
Inglês |
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Conteúdo: |
There is little information about the availability of water in the Cerrado biome, the main agricultural frontier in Brazil, especially about groundwater, and this has compromised the region?s economic and social development, as well as environmental sustainability. The reduction of rainfall in this region, indicated by numerous climate models, may reduce aquifer recharge and, consequently, groundwater availability and sustainable development of the Cerrado biome. This study aimed to evaluate the impact of global climate change on groundwater recharge in a Brazilian Savannah watershed. Rainfall and water table depth data were recorded between 2007 and 2015. Based on these data, equations were developed relating the average monthly depth of the water table with the accumulated average monthly rainfall. From these equations, monthly average recharges considering the future climate estimates made by climate models (Eta-HadGEM2-ES and Eta-MIROC5) and Representative Concentration Pathway (RCP) scenarios (4.5 and 8.5) were calculated. In a pessimistic scenario (RCP 8.5), the average monthly groundwater recharge is decreasing in the beginning and in the end of the rainy season, indicating that there may be an increase in the dry season and, consequently, a reduction in water availability in the Cerrado biome region. |
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Palavras-Chave: |
Disponibilidade hídrica. |
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Thesagro: |
Cerrado; Chuva; Lençol Freático; Mudança Climática; Seca. |
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Categoria do assunto: |
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Marc: |
LEADER 02016naa a2200241 a 4500
001 2133704
005 2021-08-18
008 2021 bl uuuu u00u1 u #d
100 1 $aCAMBRAIA NETO, A. J.
245 $aImpact of climate change on groundwater recharge in a Brazilian Savannah watershed.$h[electronic resource]
260 $c2021
300 $ap. 1425-1436
520 $aThere is little information about the availability of water in the Cerrado biome, the main agricultural frontier in Brazil, especially about groundwater, and this has compromised the region?s economic and social development, as well as environmental sustainability. The reduction of rainfall in this region, indicated by numerous climate models, may reduce aquifer recharge and, consequently, groundwater availability and sustainable development of the Cerrado biome. This study aimed to evaluate the impact of global climate change on groundwater recharge in a Brazilian Savannah watershed. Rainfall and water table depth data were recorded between 2007 and 2015. Based on these data, equations were developed relating the average monthly depth of the water table with the accumulated average monthly rainfall. From these equations, monthly average recharges considering the future climate estimates made by climate models (Eta-HadGEM2-ES and Eta-MIROC5) and Representative Concentration Pathway (RCP) scenarios (4.5 and 8.5) were calculated. In a pessimistic scenario (RCP 8.5), the average monthly groundwater recharge is decreasing in the beginning and in the end of the rainy season, indicating that there may be an increase in the dry season and, consequently, a reduction in water availability in the Cerrado biome region.
650 $aCerrado
650 $aChuva
650 $aLençol Freático
650 $aMudança Climática
650 $aSeca
653 $aDisponibilidade hídrica
700 1 $aRODRIGUES, L. N.
700 1 $aSILVA, D. D. da
700 1 $aALTHOFF, D.
773 $tTheoretical and Applied Climatology$gv. 143, 2021.
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Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
25/09/2008 |
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Data da última atualização: |
25/09/2008 |
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Autoria: |
LAZCANO, C.; SAMPEDRO, L.; ZAS, R.; DOMÍNGUEZ, J. |
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Título: |
The effect of vermicompost on pine (Pinus pinaster) germination and the role of plant genotype. |
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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 use of organic amendments such as vermicompost might be considered in forest nursery
as a mean to reduce fertilizer expenses and the impact of the exploitation of highly valuable and
non-renewable materials such as peat.
Genetic improvement programs select genotypes that best meet the requirements for a good
adaptation to the environment and optimal yields; nevertheless, given the phenotypic plasticity
of the species, their growth and field performance might vary depending on the environment and
breeding practices. Several studies have demonstrated that vermicompost can improve
germination and enhance growth in some plant species; nevertheless, the effects of vermicompost
have been described mainly on horticultural and ornamental plants and to a lower extent in
forestry species. Besides, vermicompost effects might vary between genotypes of the same
species.
We therefore investigated the effect of vermicompost, on the germination and early development
of six progenies of Pinus pinaster.
Pine seeds from six open-pollinated P.pinaster families, selected for superior growth, stem
form and branch characteristics, were collected from an experimental orchard in Sergude
(Galicia, NW Spain). Eight seeds belonging to the same family were sown in 500 ml pots, filled
with perlite and a superficial layer of 3 cm of sand, where the treatments were applied. Treatments
consisted in: (i) solid vermicompost incorporated into the sand layer (1:1, v:v), (ii) vermicompost
tea administrated once a week. Controls were made with no vermicompost addition. Seed
germination, seedling growth and ontogenic development were evaluated.
There was a clear effect of the genotype on the germination parameters as well as on the early
development of the seedlings. In addition there was an effect of the treatments on most of the
parameters studied. Both solid and liquid vermicompost showed to be suitable amendments
for the potting media of pines. The percentage of final germination was increased by
vermicompost tea addition and the seeds that germinated with vermicompost tea matured faster
that the ones germinated in vermicompost. The seedlings germinated in vermicompost and the
ones with vermicompost tea showed significantly lower root biomass than the ones germinated
in sand. However this reduction did not affect the aerial biomass and it was not attributable to a
nutrient deficit since the seedlings where the treatments were applied had significantly more
leaf nitrogen that the control.
Almost no genotype x treatment interaction was significant meaning that the effect of
vermicompost was equal for all the families independently of the genotype. MenosThe use of organic amendments such as vermicompost might be considered in forest nursery
as a mean to reduce fertilizer expenses and the impact of the exploitation of highly valuable and
non-renewable materials such as peat.
Genetic improvement programs select genotypes that best meet the requirements for a good
adaptation to the environment and optimal yields; nevertheless, given the phenotypic plasticity
of the species, their growth and field performance might vary depending on the environment and
breeding practices. Several studies have demonstrated that vermicompost can improve
germination and enhance growth in some plant species; nevertheless, the effects of vermicompost
have been described mainly on horticultural and ornamental plants and to a lower extent in
forestry species. Besides, vermicompost effects might vary between genotypes of the same
species.
We therefore investigated the effect of vermicompost, on the germination and early development
of six progenies of Pinus pinaster.
Pine seeds from six open-pollinated P.pinaster families, selected for superior growth, stem
form and branch characteristics, were collected from an experimental orchard in Sergude
(Galicia, NW Spain). Eight seeds belonging to the same family were sown in 500 ml pots, filled
with perlite and a superficial layer of 3 cm of sand, where the treatments were applied. Treatments
consisted in: (i) solid vermicompost incorporated into the sand layer (1:1, v:v), (ii) vermicompost
tea administrated o... Mostrar Tudo |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03378naa a2200157 a 4500
001 1314956
005 2008-09-25
008 2008 bl uuuu u00u1 u #d
100 1 $aLAZCANO, C.
245 $aThe effect of vermicompost on pine (Pinus pinaster) germination and the role of plant genotype.
260 $c2008
520 $aThe use of organic amendments such as vermicompost might be considered in forest nursery as a mean to reduce fertilizer expenses and the impact of the exploitation of highly valuable and non-renewable materials such as peat. Genetic improvement programs select genotypes that best meet the requirements for a good adaptation to the environment and optimal yields; nevertheless, given the phenotypic plasticity of the species, their growth and field performance might vary depending on the environment and breeding practices. Several studies have demonstrated that vermicompost can improve germination and enhance growth in some plant species; nevertheless, the effects of vermicompost have been described mainly on horticultural and ornamental plants and to a lower extent in forestry species. Besides, vermicompost effects might vary between genotypes of the same species. We therefore investigated the effect of vermicompost, on the germination and early development of six progenies of Pinus pinaster. Pine seeds from six open-pollinated P.pinaster families, selected for superior growth, stem form and branch characteristics, were collected from an experimental orchard in Sergude (Galicia, NW Spain). Eight seeds belonging to the same family were sown in 500 ml pots, filled with perlite and a superficial layer of 3 cm of sand, where the treatments were applied. Treatments consisted in: (i) solid vermicompost incorporated into the sand layer (1:1, v:v), (ii) vermicompost tea administrated once a week. Controls were made with no vermicompost addition. Seed germination, seedling growth and ontogenic development were evaluated. There was a clear effect of the genotype on the germination parameters as well as on the early development of the seedlings. In addition there was an effect of the treatments on most of the parameters studied. Both solid and liquid vermicompost showed to be suitable amendments for the potting media of pines. The percentage of final germination was increased by vermicompost tea addition and the seeds that germinated with vermicompost tea matured faster that the ones germinated in vermicompost. The seedlings germinated in vermicompost and the ones with vermicompost tea showed significantly lower root biomass than the ones germinated in sand. However this reduction did not affect the aerial biomass and it was not attributable to a nutrient deficit since the seedlings where the treatments were applied had significantly more leaf nitrogen that the control. Almost no genotype x treatment interaction was significant meaning that the effect of vermicompost was equal for all the families independently of the genotype.
700 1 $aSAMPEDRO, L.
700 1 $aZAS, R.
700 1 $aDOMÍNGUEZ, J.
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.
Download
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