Base de dados : MEDLINE
Pesquisa : B01.650.915 [Categoria DeCS]
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  1 / 22079 MEDLINE  
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[PMID]:29214539
[Au] Autor:Barroso PJ; Martín J; Santos JL; Aparicio I; Alonso E
[Ad] Endereço:Department of Analytical Chemistry, Escuela Politécnica Superior, University of Seville, C/ Virgen de África 7, 41011, Seville, Spain.
[Ti] Título:Analytical method for the evaluation of the outdoor air contamination by emerging pollutants using tree leaves as bioindicators.
[So] Source:Anal Bioanal Chem;410(2):417-428, 2018 Jan.
[Is] ISSN:1618-2650
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:In this work, an analytical method, based on sonication-assisted extraction, clean-up by dispersive solid-phase extraction and determination by liquid chromatography-tandem mass spectrometry, has been developed and validated for the simultaneous determination of 15 emerging pollutants in leaves from four ornamental tree species. Target compounds include perfluorinated organic compounds, plasticizers, surfactants, brominated flame retardant, and preservatives. The method was optimized using Box-Behnken statistical experimental design with response surface methodology and validated in terms of recovery, accuracy, precision, and method detection and quantification limits. Quantification of target compounds was carried out using matrix-matched calibration curves. The highest recoveries were achieved for the perfluorinated organic compounds (mean values up to 87%) and preservatives (up to 88%). The lowest recoveries were achieved for plasticizers (51%) and brominated flame retardant (63%). Method detection and quantification limits were in the ranges 0.01-0.09 ng/g dry matter (dm) and 0.02-0.30 ng/g dm, respectively, for most of the target compounds. The method was successfully applied to the determination of the target compounds on leaves from four tree species used as urban ornamental trees (Citrus aurantium, Celtis australis, Platanus hispanica, and Jacaranda mimosifolia). Graphical abstract Analytical method for the biomonitorization of emerging pollutants in outdoor air.
[Mh] Termos MeSH primário: Poluentes Atmosféricos/análise
Fluorcarbonetos/análise
Folhas de Planta/química
Extração em Fase Sólida/métodos
Espectrometria de Massas em Tandem/métodos
Árvores/química
[Mh] Termos MeSH secundário: Poluição do Ar/análise
Cromatografia Líquida de Alta Pressão/métodos
Citrus/química
Biomarcadores Ambientais
Retardadores de Chama/análise
Limite de Detecção
Plastificantes/análise
Sonicação/métodos
Tensoativos/análise
Ulmaceae/química
[Pt] Tipo de publicação:EVALUATION STUDIES; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Air Pollutants); 0 (Environmental Biomarkers); 0 (Flame Retardants); 0 (Fluorocarbons); 0 (Plasticizers); 0 (Surface-Active Agents)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171208
[St] Status:MEDLINE
[do] DOI:10.1007/s00216-017-0733-8


  2 / 22079 MEDLINE  
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[PMID]:29439235
[Au] Autor:Konarzewski M; Zabielski R; Kowalczyk R; Duszynski J
[Ad] Endereço:Institute of Biology, University of Bialystok, 15-245 Bialystok, Poland.
[Ti] Título:Bialowieza Forest: Logging data lacking.
[So] Source:Science;359(6376):646, 2018 02 09.
[Is] ISSN:1095-9203
[Cp] País de publicação:United States
[La] Idioma:eng
[Mh] Termos MeSH primário: Agricultura Florestal
Florestas
[Mh] Termos MeSH secundário: Seres Humanos
Árvores
[Pt] Tipo de publicação:LETTER; COMMENT
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180227
[Lr] Data última revisão:
180227
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180214
[St] Status:MEDLINE
[do] DOI:10.1126/science.aat0295


  3 / 22079 MEDLINE  
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[PMID]:29439234
[Au] Autor:Blicharska M; Smithers RJ
[Ad] Endereço:Natural Resources and Sustainable Development, Department of Earth Sciences, Uppsala University, 75 236 Uppsala, Sweden. malgorzata.blicharska@geo.uu.se.
[Ti] Título:Bialowieza Forest: Political stands.
[So] Source:Science;359(6376):646, 2018 02 09.
[Is] ISSN:1095-9203
[Cp] País de publicação:United States
[La] Idioma:eng
[Mh] Termos MeSH primário: Florestas
Árvores
[Pt] Tipo de publicação:LETTER; COMMENT
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180227
[Lr] Data última revisão:
180227
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180214
[St] Status:MEDLINE
[do] DOI:10.1126/science.aar7173


  4 / 22079 MEDLINE  
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[PMID]:29304149
[Au] Autor:Tzeng HY; Wang W; Tseng YH; Chiu CA; Kuo CC; Tsai ST
[Ad] Endereço:Department of Forestry, National Chung Hsing University, Taichung, Taiwan.
[Ti] Título:Tree mortality in response to typhoon-induced floods and mudslides is determined by tree species, size, and position in a riparian Formosan gum forest in subtropical Taiwan.
[So] Source:PLoS One;13(1):e0190832, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Global warming-induced extreme climatic changes have increased the frequency of severe typhoons bringing heavy rains; this has considerably affected the stability of the forest ecosystems. Since the Taiwan 921 earthquake occurred in 21 September 1999, the mountain geology of the Island of Taiwan has become unstable and typhoon-induced floods and mudslides have changed the topography and geomorphology of the area; this has further affected the stability and functions of the riparian ecosystem. In this study, the vegetation of the unique Aowanda Formosan gum forest in Central Taiwan was monitored for 3 years after the occurrence of floods and mudslides during 2009-2011. Tree growth and survival, effects of floods and mudslides, and factors influencing tree survival were investigated. We hypothesized that (1) the effects of floods on the survival are significantly different for each tree species; (2) tree diameter at breast height (DBH) affects tree survival-i.e., the larger the DBH, the higher the survival rate; and (3) the relative position of trees affects tree survival after disturbances by floods and mudslides-the farther trees are from the river, the higher is their survival rate. Our results showed that after floods and mudslides, the lifespans of the major tree species varied significantly. Liquidambar formosana displayed the highest flood tolerance, and the trunks of Lagerstoemia subcostata began rooting after disturbances. Multiple regression analysis indicated that factors such as species, DBH, distance from sampled tree to the above boundary of sample plot (far from the riverbank), and distance from the upstream of the river affected the lifespans of trees; the three factors affected each tree species to different degrees. Furthermore, we showed that insect infestation had a critical role in determining tree survival rate. Our 3-year monitoring investigation revealed that severe typhoon-induced floods and mudslides disturbed the riparian vegetation in the Formosan gum forest, replacing the original vegetation and beginning secondary succession. Moreover, flooding provided new habitats for various plants to establish their progeny. By using our results, lifecycles of trees (including death) can be understood in detail, facilitating riparian vegetation engineering in forests severely disturbed by typhoon-induced floods and mudslides.
[Mh] Termos MeSH primário: Tempestades Ciclônicas
Inundações
Deslizamentos de Terra
Árvores
[Mh] Termos MeSH secundário: Ecossistema
Taiwan
Árvores/crescimento & desenvolvimento
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180223
[Lr] Data última revisão:
180223
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180106
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0190832


  5 / 22079 MEDLINE  
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[PMID]:29351291
[Au] Autor:He H; Zhang C; Zhao X; Fousseni F; Wang J; Dai H; Yang S; Zuo Q
[Ad] Endereço:Key Laboratory for Forest Resources & Ecosystem Processes, Beijing Forestry University, Haidian District, Beijing, China.
[Ti] Título:Allometric biomass equations for 12 tree species in coniferous and broadleaved mixed forests, Northeastern China.
[So] Source:PLoS One;13(1):e0186226, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Understanding forest carbon budget and dynamics for sustainable resource management and ecosystem functions requires quantification of above- and below-ground biomass at individual tree species and stand levels. In this study, a total of 122 trees (9-12 per species) were destructively sampled to determine above- and below-ground biomass of 12 tree species (Acer mandshuricum, Acer mono, Betula platyphylla, Carpinus cordata, Fraxinus mandshurica, Juglans mandshurica, Maackia amurensis, P. koraiensis, Populus ussuriensis, Quercus mongolica, Tilia amurensis and Ulmus japonica) in coniferous and broadleaved mixed forests of Northeastern China, an area of the largest natural forest in the country. Biomass allocation was examined and biomass models were developed using diameter as independent variable for individual tree species and all species combined. The results showed that the largest biomass allocation of all species combined was on stems (57.1%), followed by coarse root (21.3%), branch (18.7%), and foliage (2.9%). The log-transformed model was statistically significant for all biomass components, although predicting power was higher for species-specific models than for all species combined, general biomass models, and higher for stems, roots, above-ground biomass, and total tree biomass than for branch and foliage biomass. These findings supplement the previous studies on this forest type by additional sample trees, species and locations, and support biomass research on forest carbon budget and dynamics by management activities such as thinning and harvesting in the northeastern part of China.
[Mh] Termos MeSH primário: Biomassa
Florestas
Árvores/classificação
[Mh] Termos MeSH secundário: China
Modelos Teóricos
Estruturas Vegetais
Especificidade da Espécie
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180215
[Lr] Data última revisão:
180215
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180120
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0186226


  6 / 22079 MEDLINE  
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[PMID]:29293528
[Au] Autor:Dillon S; Quentin A; Ivkovic M; Furbank RT; Pinkard E
[Ad] Endereço:Genetic Diversity and Adaptation, Breakthrough genetic technologies for crop productivity, CSIRO Agriculture and Food, Canberra, ACT, Australia.
[Ti] Título:Photosynthetic variation and responsiveness to CO2 in a widespread riparian tree.
[So] Source:PLoS One;13(1):e0189635, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Phenotypic responses to rising CO2 will have consequences for the productivity and management of the world's forests. This has been demonstrated through extensive free air and controlled environment CO2 enrichment studies. However intraspecific variation in plasticity remains poorly characterised in trees, with the capacity to produce unexpected trends in response to CO2 across a species distribution. Here we examined variation in photosynthesis traits across 43 provenances of a widespread, genetically diverse eucalypt, E. camaldulensis, under ambient and elevated CO2 conditions. Genetic variation suggestive of local adaptation was identified for some traits under ambient conditions. Evidence of genotype by CO2 interaction in responsiveness was limited, however support was identified for quantum yield (φ). In this case local adaptation was invoked to explain trends in provenance variation in response. The results suggest potential for genetic variation to influence a limited set of photosynthetic responses to rising CO2 in seedlings of E. camaldulensis, however further assessment in mature stage plants in linkage with growth and fitness traits is needed to understand whether trends in φ could have broader implications for productivity of red gum forests.
[Mh] Termos MeSH primário: Dióxido de Carbono/metabolismo
Fotossíntese
Árvores/fisiologia
[Mh] Termos MeSH secundário: Árvores/crescimento & desenvolvimento
Árvores/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
142M471B3J (Carbon Dioxide)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180215
[Lr] Data última revisão:
180215
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180103
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0189635


  7 / 22079 MEDLINE  
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[PMID]:28463471
[Au] Autor:Gabriela Montes-Cartas C; Padilla P; Rosell JA; Domínguez CA; Fornoni J; Olson ME
[Ad] Endereço:Departamento de Botánica, Instituto de Biología, Universidad Nacional Autónoma de México, 3er Circuito de CU s/n, Ciudad de México, Mexico.
[Ti] Título:Testing the hypothesis that biological modularity is shaped by adaptation: Xylem in the Bursera simaruba clade of tropical trees.
[So] Source:Evol Dev;19(3):111-123, 2017 05.
[Is] ISSN:1525-142X
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The study of modularity allows recognition of suites of character covariation that potentially diagnose units of evolutionary change. One prominent perspective predicts that natural selection should forge developmental units that maximize mutual functional independence. We examined the module-function relation using secondary xylem (wood) in a clade of tropical trees as a study system. Traditionally, the three main cell types in wood (vessels, fibers, and parenchyma) have respectively been associated with three functions (conduction, mechanical support, and storage). We collected samples from nine species of the simaruba clade of Bursera at fifteen sites and measured thirteen anatomical variables that have traditionally been regarded as reflecting the distinct functions of these cell types. If there are indeed (semi) independently evolving modules associated with functions, and cell types really are associated with these functions, then we should observe greater association between traits within cell types than between traits from different cell types. To map these associations, we calculated correlation coefficients among anatomical variables and identified modules using cluster and factor analysis. Our results were only partially congruent with expectations, with associations between characters of different cell types common. These results suggest causes of covariation, some involving selected function as predicted, but also highlighting the tradeoffs and shared developmental pathways limiting the evolutionary independence of some cell types in the secondary xylem. The evolution of diversity across the simaruba clade appears to have required only limited independence between parts.
[Mh] Termos MeSH primário: Bursera/citologia
Bursera/genética
Árvores/citologia
Árvores/genética
Xilema/citologia
[Mh] Termos MeSH secundário: Adaptação Fisiológica
Evolução Biológica
Bursera/fisiologia
Análise por Conglomerados
Árvores/fisiologia
Xilema/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1707
[Cu] Atualização por classe:180215
[Lr] Data última revisão:
180215
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170503
[St] Status:MEDLINE
[do] DOI:10.1111/ede.12225


  8 / 22079 MEDLINE  
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[PMID]:29320520
[Au] Autor:Arasumani M; Khan D; Das A; Lockwood I; Stewart R; Kiran RA; Muthukumar M; Bunyan M; Robin VV
[Ad] Endereço:INTACH-Kodaikanal, Melati, Wilbet house, Kodaikanal, India.
[Ti] Título:Not seeing the grass for the trees: Timber plantations and agriculture shrink tropical montane grassland by two-thirds over four decades in the Palani Hills, a Western Ghats Sky Island.
[So] Source:PLoS One;13(1):e0190003, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Tropical montane habitats, grasslands, in particular, merit urgent conservation attention owing to the disproportionate levels of endemic biodiversity they harbour, the ecosystem services they provide, and the fact that they are among the most threatened habitats globally. The Shola Sky Islands in the Western Ghats host a matrix of native forest-grassland matrix that has been planted over the last century, with exotic timber plantations. The popular discourse on the landscape change is that mainly forests have been lost to the timber plantations and recent court directives are to restore Shola forest trees. In this study, we examine spatiotemporal patterns of landscape change over the last 40 years in the Palani Hills, a significant part of the montane habitat in the Western Ghats. Using satellite imagery and field surveys, we find that 66% of native grasslands and 31% of native forests have been lost over the last 40 years. Grasslands have gone from being the dominant, most contiguous land cover to one of the rarest and most fragmented. They have been replaced by timber plantations and, to a lesser extent, expanding agriculture. We find that the spatial pattern of grassland loss to plantations differs from the loss to agriculture, likely driven by the invasion of plantation species into grasslands. We identify remnant grasslands that should be prioritised for conservation and make specific recommendations for conservation and restoration of grasslands in light of current management policy in the Palani Hills, which favours large-scale removal of plantations and emphasises the restoration of native forests.
[Mh] Termos MeSH primário: Agricultura
Conservação dos Recursos Naturais
Agricultura Florestal
Pradaria
[Mh] Termos MeSH secundário: Agricultura/tendências
Área Sob a Curva
Ecossistema
Agricultura Florestal/tendências
Atividades Humanas
Lagos
Modelos Teóricos
Curva ROC
Imagens de Satélites
Sri Lanka
Árvores
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180214
[Lr] Data última revisão:
180214
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180111
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0190003


  9 / 22079 MEDLINE  
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[PMID]:28967570
[Au] Autor:Welden NA; Wolseley PA; Ashmore MR
[Ad] Endereço:Stockholm Environment Institute, University of York, UK; Open University, Milton Keynes, UK.
[Ti] Título:Citizen science identifies the effects of nitrogen deposition, climate and tree species on epiphytic lichens across the UK.
[So] Source:Environ Pollut;232:80-89, 2018 Jan.
[Is] ISSN:1873-6424
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:A national citizen survey quantified the abundance of epiphytic lichens that are known to be either sensitive or tolerant to nitrogen (N) deposition. Records were collected across the UK from over 10,000 individual trees of 22 deciduous species. Mean abundance of tolerant and sensitive lichens was related to mean N deposition rates and climatic variables at a 5 km scale, and the response of lichens was compared on the three most common trees (Quercus, Fraxinus and Acer) and by assigning all 22 tree species to three bark pH groups. The abundance of N-sensitive lichens on trunks decreased with increasing total N deposition, while that of N-tolerant lichens increased. The abundance of N-sensitive lichens on trunks was reduced close to a busy road, while the abundance of N-tolerant lichens increased. The abundance of N-tolerant lichen species on trunks was lower on Quercus and other low bark pH species, but the abundance of N-sensitive lichens was similar on different tree species. Lichen abundance relationships with total N deposition did not differ between tree species or bark pH groups. The response of N-sensitive lichens to reduced nitrogen was greater than to oxidised N, and the response of N-tolerant lichens was greater to oxidised N than to reduced N. There were differences in the response of N-sensitive and N-tolerant lichens to rainfall, humidity and temperature. Relationships with N deposition and climatic variables were similar for lichen presence on twigs as for lichen abundance on trunks, but N-sensitive lichens increased, rather than decreased, on twigs of Quercus/low bark pH species. The results demonstrate the unique power of citizen science to detect and quantify the air pollution impacts over a wide geographical range, and specifically to contribute to understanding of lichen responses to different chemical forms of N deposition, local pollution sources and bark chemistry.
[Mh] Termos MeSH primário: Poluentes Atmosféricos/análise
Monitoramento Ambiental/métodos
Líquens/química
Nitrogênio/análise
[Mh] Termos MeSH secundário: Acer
Poluição do Ar/estatística & dados numéricos
Poluição Ambiental
Líquens/fisiologia
Quercus
Árvores
Reino Unido
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Air Pollutants); N762921K75 (Nitrogen)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180208
[Lr] Data última revisão:
180208
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171003
[St] Status:MEDLINE


  10 / 22079 MEDLINE  
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[PMID]:28469024
[Au] Autor:Ahrends A; Hollingsworth PM; Beckschäfer P; Chen H; Zomer RJ; Zhang L; Wang M; Xu J
[Ad] Endereço:Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China aahrends@rbge.ac.uk.
[Ti] Título:China's fight to halt tree cover loss.
[So] Source:Proc Biol Sci;284(1854), 2017 May 17.
[Is] ISSN:1471-2954
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:China is investing immense resources for planting trees, totalling more than US$ 100 billion in the past decade alone. Every year, China reports more afforestation than the rest of the world combined. Here, we show that China's forest cover gains are highly definition-dependent. If the definition of 'forest' follows FAO criteria (including immature and temporarily unstocked areas), China has gained 434 000 km between 2000 and 2010. However, remotely detectable gains of vegetation that non-specialists would view as forest (tree cover higher than 5 m and minimum 50% crown cover) are an order of magnitude less (33 000 km ). Using high-resolution maps and environmental modelling, we estimate that approximately 50% of the world's forest with minimum 50% crown cover has been lost in the past approximately 10 000 years. China historically lost 1.9-2.7 million km (59-67%), and substantial losses continue. At the same time, most of China's afforestation investment targets environments that our model classes as unsuitable for trees. Here, gains detectable via satellite imagery are limited. Conversely, the regions where modest gains are detected are environmentally suitable but have received little afforestation investment due to conflicting land-use demands for agriculture and urbanization. This highlights the need for refined forest monitoring, and greater consideration of environmental suitability in afforestation programmes.
[Mh] Termos MeSH primário: Conservação dos Recursos Naturais
Florestas
Imagens de Satélites
Árvores/crescimento & desenvolvimento
[Mh] Termos MeSH secundário: Agricultura
China
Urbanização
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180131
[Lr] Data última revisão:
180131
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170505
[St] Status:MEDLINE



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