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Registro Completo |
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
12/08/2019 |
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Data da última atualização: |
08/11/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
RIBEIRO, J. C. T.; NUNES-FREITAS, A. F.; FIDALGO, E. C. C.; UZEDA, M. C. |
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Afiliação: |
JULIANA CRISTINA TENIUS RIBEIRO, UFRRJ; ANDRÉ FELIPPE NUNES-FREITAS, UFRRJ; ELAINE CRISTINA CARDOSO FIDALGO, CNPS; MARIELLA CAMARDELLI UZEDA, CNPAB. |
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Título: |
Forest fragmentation and impacts of intensive agriculture: responses from different tree functional groups. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
PLoS ONE, v. 14, n. 8, article e0212725, 2019. |
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DOI: |
10.1371/journal.pone.0212725 |
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Idioma: |
Inglês |
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Conteúdo: |
Agricultural landscapes are seen as areas of extreme importance for studying and developing strategies which integrate biodiversity conservation and ecosystem services with food production. The main strategies for intensifying agriculture are based on conventional agricultural practices of frequently using inputs for fertilization and correcting soil pH. Some studies show that these practices generate impacts on nearby forest fragments through soil contamination and increasing nutrient content. The objective of this study was to identify the impacts on the functional groups of sciophilous (late successional/shade-tolerant species) and heliophilous (pioneer/sun-loving) species of a tree community of 14 forest fragments near pasture areas and agricultural areas under conventional practices, raising the hypothesis that higher-fertility forest fragments adjacent to intensive agriculture modify the floristic composition of the tree community. Consequently, this study is based on the following questions: i) Do forest fragments within intensive farming environments present differences in floristic composition of species?; ii) Does the soil fertility influence the tree species composition?; iii) Which variables influence species abundance and richness in the forest fragments with different types of use around their environment? The floristic composition of fragments close to agricultural areas are more similar to each other than the composition of fragments close to pasture areas. Furthermore, the General Linear Model (GLM) results show a clear influence of the intensive farming environment on the richness and abundance of the two functional groups in the forest fragments, directly benefiting the abundance of heliophilous species, which are also benefited by the greater declivity and smaller fragment area, while the abundance of sciophytes is negatively correlated with these last two variables. The increase of calcium content is beneficial for the richness of heliophilous species, while the increase in phosphorus content influences a reduction in the richness of sciophyte species, which also strongly respond to the isolation between fragments. The results indicate a dominance trend of pioneer species in fragments with nutritionally enriched soils, providing evidence that the intense adoption of inputs in cultivated areas causes concrete impacts on the diversity of the tree community. MenosAgricultural landscapes are seen as areas of extreme importance for studying and developing strategies which integrate biodiversity conservation and ecosystem services with food production. The main strategies for intensifying agriculture are based on conventional agricultural practices of frequently using inputs for fertilization and correcting soil pH. Some studies show that these practices generate impacts on nearby forest fragments through soil contamination and increasing nutrient content. The objective of this study was to identify the impacts on the functional groups of sciophilous (late successional/shade-tolerant species) and heliophilous (pioneer/sun-loving) species of a tree community of 14 forest fragments near pasture areas and agricultural areas under conventional practices, raising the hypothesis that higher-fertility forest fragments adjacent to intensive agriculture modify the floristic composition of the tree community. Consequently, this study is based on the following questions: i) Do forest fragments within intensive farming environments present differences in floristic composition of species?; ii) Does the soil fertility influence the tree species composition?; iii) Which variables influence species abundance and richness in the forest fragments with different types of use around their environment? The floristic composition of fragments close to agricultural areas are more similar to each other than the composition of fragments close to pasture areas. F... Mostrar Tudo |
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Thesagro: |
Agricultura; Fertilidade do Solo; Floresta. |
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Thesaurus Nal: |
Agriculture; Forests; Landscapes; Soil fertility. |
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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/200545/1/Forest-fragmentation-and-impacts-of-intensive-agriculture-2019.pdf
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Marc: |
LEADER 03171naa a2200253 a 4500
001 2111243
005 2019-11-08
008 2019 bl uuuu u00u1 u #d
024 7 $a10.1371/journal.pone.0212725$2DOI
100 1 $aRIBEIRO, J. C. T.
245 $aForest fragmentation and impacts of intensive agriculture$bresponses from different tree functional groups.$h[electronic resource]
260 $c2019
520 $aAgricultural landscapes are seen as areas of extreme importance for studying and developing strategies which integrate biodiversity conservation and ecosystem services with food production. The main strategies for intensifying agriculture are based on conventional agricultural practices of frequently using inputs for fertilization and correcting soil pH. Some studies show that these practices generate impacts on nearby forest fragments through soil contamination and increasing nutrient content. The objective of this study was to identify the impacts on the functional groups of sciophilous (late successional/shade-tolerant species) and heliophilous (pioneer/sun-loving) species of a tree community of 14 forest fragments near pasture areas and agricultural areas under conventional practices, raising the hypothesis that higher-fertility forest fragments adjacent to intensive agriculture modify the floristic composition of the tree community. Consequently, this study is based on the following questions: i) Do forest fragments within intensive farming environments present differences in floristic composition of species?; ii) Does the soil fertility influence the tree species composition?; iii) Which variables influence species abundance and richness in the forest fragments with different types of use around their environment? The floristic composition of fragments close to agricultural areas are more similar to each other than the composition of fragments close to pasture areas. Furthermore, the General Linear Model (GLM) results show a clear influence of the intensive farming environment on the richness and abundance of the two functional groups in the forest fragments, directly benefiting the abundance of heliophilous species, which are also benefited by the greater declivity and smaller fragment area, while the abundance of sciophytes is negatively correlated with these last two variables. The increase of calcium content is beneficial for the richness of heliophilous species, while the increase in phosphorus content influences a reduction in the richness of sciophyte species, which also strongly respond to the isolation between fragments. The results indicate a dominance trend of pioneer species in fragments with nutritionally enriched soils, providing evidence that the intense adoption of inputs in cultivated areas causes concrete impacts on the diversity of the tree community.
650 $aAgriculture
650 $aForests
650 $aLandscapes
650 $aSoil fertility
650 $aAgricultura
650 $aFertilidade do Solo
650 $aFloresta
700 1 $aNUNES-FREITAS, A. F.
700 1 $aFIDALGO, E. C. C.
700 1 $aUZEDA, M. C.
773 $tPLoS ONE$gv. 14, n. 8, article e0212725, 2019.
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Registro original: |
Embrapa Solos (CNPS) |
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Origem |
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Classificação |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
09/02/2018 |
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Data da última atualização: |
09/02/2018 |
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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: |
CASTRO, R. A.; DOURADO, M. N.; ALMEIDA, J. R. de; LACAVA, P. T.; NAVE, A.; MELO, I. S. de; AZEVEDO, J. L. de; QUECINE, M. C. |
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Afiliação: |
RENATA ASSIS CASTRO, ESALQ-USP; MANUELLA NOBREGA DOURADO, ICB-USP; JAQUELINE RAQUEL DE ALMEIDA, ESALQ-USP; PAULO TEIXEIRA LACAVA, UFSCar; ANDRE NAVE, Bioflora; ITAMAR SOARES DE MELO, CNPMA; JOAO LUCIO DE AZEVEDO, ESALQ-USP; MARIA CAROLINA QUECINE, ESALQ-USP. |
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Título: |
Mangrove endophyte promotes reforestation tree (Acacia polyphylla) growth. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Brazilian Journal of Microbiology, v. 49, n. 1, p. 59-66, 2018. |
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ISSN: |
1517-8382 |
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DOI: |
https://doi.org/10.1016/j.bjm.2017.04.002 |
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Idioma: |
Inglês |
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Conteúdo: |
Mangroves are ecosystems located in the transition zone between land and sea that serve as a potential source of biotechnological resources. Brazil's extensive coast contains one of the largest mangrove forests in the world (encompassing an area of 25,000 km2 along all the coast). Endophytic bacteria were isolated from the following three plant species: Rhizophora mangle, Laguncularia racemosa and Avicennia nitida. A large number of these isolates, 115 in total, were evaluated for their ability to fix nitrogen and solubilize phosphorous. Bacteria that tested positive for both of these tests were examined further to determine their level of indole acetic acid production. Two strains with high indole acetic acid production were selected for use as inoculants for reforestation trees, and then the growth of the plants was evaluated under field conditions. The bacterium Pseudomonas fluorescens (strain MCR1.10) had a low phosphorus solubilization index, while this index was higher in the other strain used, Enterobacter sp. (strain MCR1.48). We used the reforestation tree Acacia polyphylla. The results indicate that inoculation with the MCR1.48 endophyte increases Acacia polyphylla shoot dry mass, demonstrating that this strain effectively promotes the plant's growth and fitness, which can be used in the seedling production of this tree. Therefore, we successfully screened the biotechnological potential of endophyte isolates from mangrove, with a focus on plant growth promotion, and selected a strain able to provide limited nutrients and hormones for in plant growth. MenosMangroves are ecosystems located in the transition zone between land and sea that serve as a potential source of biotechnological resources. Brazil's extensive coast contains one of the largest mangrove forests in the world (encompassing an area of 25,000 km2 along all the coast). Endophytic bacteria were isolated from the following three plant species: Rhizophora mangle, Laguncularia racemosa and Avicennia nitida. A large number of these isolates, 115 in total, were evaluated for their ability to fix nitrogen and solubilize phosphorous. Bacteria that tested positive for both of these tests were examined further to determine their level of indole acetic acid production. Two strains with high indole acetic acid production were selected for use as inoculants for reforestation trees, and then the growth of the plants was evaluated under field conditions. The bacterium Pseudomonas fluorescens (strain MCR1.10) had a low phosphorus solubilization index, while this index was higher in the other strain used, Enterobacter sp. (strain MCR1.48). We used the reforestation tree Acacia polyphylla. The results indicate that inoculation with the MCR1.48 endophyte increases Acacia polyphylla shoot dry mass, demonstrating that this strain effectively promotes the plant's growth and fitness, which can be used in the seedling production of this tree. Therefore, we successfully screened the biotechnological potential of endophyte isolates from mangrove, with a focus on plant growth promotion, an... Mostrar Tudo |
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Palavras-Chave: |
Endophytic bacteria; IAA; Phosphorus and plant growth promoting bacteria. |
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Thesagro: |
Bactéria; Estimulante de crescimento vegetal; Laguncularia Racemosa; Mangue; Rhizophora Mangle. |
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Thesaurus NAL: |
Avicennia; Growth promotion; Mangrove forests. |
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Categoria do assunto: |
S Ciências Biológicas |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/172492/1/2017AP64.pdf
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Marc: |
LEADER 02658naa a2200361 a 4500
001 2087571
005 2018-02-09
008 2018 bl uuuu u00u1 u #d
022 $a1517-8382
024 7 $ahttps://doi.org/10.1016/j.bjm.2017.04.002$2DOI
100 1 $aCASTRO, R. A.
245 $aMangrove endophyte promotes reforestation tree (Acacia polyphylla) growth.$h[electronic resource]
260 $c2018
520 $aMangroves are ecosystems located in the transition zone between land and sea that serve as a potential source of biotechnological resources. Brazil's extensive coast contains one of the largest mangrove forests in the world (encompassing an area of 25,000 km2 along all the coast). Endophytic bacteria were isolated from the following three plant species: Rhizophora mangle, Laguncularia racemosa and Avicennia nitida. A large number of these isolates, 115 in total, were evaluated for their ability to fix nitrogen and solubilize phosphorous. Bacteria that tested positive for both of these tests were examined further to determine their level of indole acetic acid production. Two strains with high indole acetic acid production were selected for use as inoculants for reforestation trees, and then the growth of the plants was evaluated under field conditions. The bacterium Pseudomonas fluorescens (strain MCR1.10) had a low phosphorus solubilization index, while this index was higher in the other strain used, Enterobacter sp. (strain MCR1.48). We used the reforestation tree Acacia polyphylla. The results indicate that inoculation with the MCR1.48 endophyte increases Acacia polyphylla shoot dry mass, demonstrating that this strain effectively promotes the plant's growth and fitness, which can be used in the seedling production of this tree. Therefore, we successfully screened the biotechnological potential of endophyte isolates from mangrove, with a focus on plant growth promotion, and selected a strain able to provide limited nutrients and hormones for in plant growth.
650 $aAvicennia
650 $aGrowth promotion
650 $aMangrove forests
650 $aBactéria
650 $aEstimulante de crescimento vegetal
650 $aLaguncularia Racemosa
650 $aMangue
650 $aRhizophora Mangle
653 $aEndophytic bacteria
653 $aIAA
653 $aPhosphorus and plant growth promoting bacteria
700 1 $aDOURADO, M. N.
700 1 $aALMEIDA, J. R. de
700 1 $aLACAVA, P. T.
700 1 $aNAVE, A.
700 1 $aMELO, I. S. de
700 1 $aAZEVEDO, J. L. de
700 1 $aQUECINE, M. C.
773 $tBrazilian Journal of Microbiology$gv. 49, n. 1, p. 59-66, 2018.
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Embrapa Meio Ambiente (CNPMA) |
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