Carbon And Nitrogen Isotopes
Mostrando 1-12 de 25 artigos, teses e dissertações.
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1. Background and the use of isoscapes in the Brazilian context: essential tool for isotope data interpretation and natural resource management
Resumo Padrões de distribuição espacial de isótopos estáveis podem ser apresentados em mapas chamados de isoscapes e têm sido amplamente utilizados para rastrear processos biogeoquímicos em sistemas naturais e antrópicos. Isoscapes têm o potencial de melhorar a disseminação e interpretação dos padrões espaciais de isótopos estáveis, aumentar
Rev. Ambient. Água. Publicado em: 25/03/2019
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2. Trophic ecology of citrus pests based on stable isotope analysis
ABSTRACT: Macrodactylus pumilio Burm. (Coleoptera: Scarabeidae) and Naupactus cervinus (Boh.) (Coleoptera: Curculionidae) are considered primary pests in citrus crops in Brazil, causing damage to plants and decreasing productivity. However, few studies investigate the ecology of these insects. In this context, the use of stable isotopes analysis (SIA) emerge
Sci. agric. (Piracicaba, Braz.). Publicado em: 2018-12
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3. Effects of sex and altitude on nutrient, and carbon and nitrogen stable isotope composition of the endangered shrub Baccharis concinna G.M. Barroso (Asteraceae)
ABSTRACT Previous ecological studies of dioecious plant species have found that female plants preferentially occur at lower altitudes where there are typically better nutritional conditions, while male plants often occur in less favorable sites. We compared the ecophysiological performance of male and female plants in three populations of the dioecious Bacch
Acta Bot. Bras.. Publicado em: 2017-06
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4. Use of carbon and nitrogen stable isotopes to study the feeding ecology of small coastal cetacean populations in southern Brazil
Amostras de tecido de indivíduos pertencentes às populações de Sotalia guianensis (boto-cinza) e Pontoporia blainvillei (toninha) que vivem no estuário da Baía da Babitonga (26° 28′ S/48° 50′ W) e de uma segunda população de P. blainvillei da área costeira (26° 38′ S/48° 41′ W) foram coletadas entre os anos 2000 e 2006 para determinar as
Biota Neotrop.. Publicado em: 2013-12
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5. Traceability of animal meals in Japanese quail eggs using the technique of 13C e 15N* stable isotopes
The objective of this study was to trace the inclusion of bovine meat and bone meal (BMBM) in the diet of Japanese quails by analyzing eggs and egg fractions (yolk and albumen) by the technique of carbon-13 (13C) and nitrogen-15 (15N) stable isotopes. In the trial, 120 Japanese quails were distributed in six treatments with four replicates of five birds each
Rev. Bras. Cienc. Avic.. Publicado em: 2013-03
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6. The use of carbon and nitrogen stable isotopes for the detection of poultry offal meal in meat-type quail feeds
The objective of the present study was to trace the inclusion of poultry offal meal (POM) in the diet of meat-type quails reared for a long period using the technique of stable isotopes. A number of 320 quails were randomly distributed into eight treatments: vegetable diet (T1), and a diet containing 8% POM were fed until the end of the experimental period (
Rev. Bras. Cienc. Avic.. Publicado em: 2013-03
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7. Performance and isotopic composition of 13C and 15N in muscle tissue of Nile tilapia (Oreochromis niloticus) fed with different protein / Desempenho produtivo e composição isotópica de 13C e 15N no tecido muscular de tilápia do Nilo (Oreochromis niloticus) alimentada com diferentes fontes protéicas
Alternative sources of food have been studied in substitution for fishmeal in aquaculture, and it may result in a difference in incorporation of carbon and nitrogen, depending on the nutritional value and availability of the source. Two experiments were designed to quantify the participation of different protein sources in the muscle tissue in juvenile and p
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/06/2012
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8. Traceability of animal by product meals in broilers fed sugarcane yeast using stable isotopes
The objective of this study was to verify if the dietary inclusion of sugarcane yeast at levels commonly used in broiler diets influences the traceability of cattle meat meal and poultry offal meal, using the technique of stable carbon and nitrogen isotopes in the breast muscle of chickens. A number of 325 one-d-old male broilers were randomly distributed in
Revista Brasileira de Ciência Avícola. Publicado em: 2012-03
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9. Fontes de carbono e nitrogênio para consumidores aquáticos nas microbacias da Mata Atlântica utilizando-se isótopos estáveis / Carbon and nitrogen sources to aquatic consumers in watersheds of the Atlantic forest using stable isotopes.
Isótopos estáveis de 13C e 15N de fontes basais e consumidores foram utilizados para descrever e quantificar as fontes de matéria orgânica que sustentam as teias alimentares em riachos da Floresta Atlântica em um gradiente altitudinal (Floresta Montana, Submontana e Terras Baixas) e em riachos com diferentes usos do solo floresta, cultivo de eucalipto e
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/12/2011
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10. DEPLOYMENT OF METHOD FOR ANALYSIS OF STABLE CARBON ISOTOPES (N-ALKANES C1-C5) IN GAS SAMPLES AT LOW CONCENTRATIONS / IMPLANTAÇÃO DE MÉTODO PARA ANÁLISE DE ISÓTOPOS ESTÁVEIS DE CARBONO (N-ALCANOS C1-C5) EM GASES A BAIXAS CONCENTRAÇÕES
The concentration and isotopic composition of n-alkanes C1-C5 has revealed as a powerful tool for interpretation of interesting processes in the oil exploration industry, studies of global climate change, oil biodegradation and carbon cycle elucidation. In this context, studies about methane analysis have been distinguished and multiplied due to the importan
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/10/2011
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11. VARIAÇÃO NA COMPOSIÇÃO ISOTÓPICA DO CARBONO E NITROGÊNIO DA MATÉRIA ORGÂNICA E BIOMASSA DA COROA FOLIAR DE AECHMEA AQUILEGA (SALISB.) GRISEB BROMELIACEAE EM CAATINGA, AGRESTE E MATA ATLÂNTICA DE SERGIPE. / CHANGE IN COMPOSITION OF CARBON AND NITROGEN ISOTOPE OF ORGANIC MATTER AND BIOMASS LEAF CROWN AECHMEA AQUILEGA (SALISB.) GRISEB BROMELIACEAE CAATINGA IN, THE ATLANTIC AND AGRESTE SERGIPE.
Estudos isotópicos para determinar os valores dos isótopos do carbono foliar mostram que estes variam -10 a -28 do padrão PDB. Este estudo analisou a composição isotópica do Carbono e Nitrogênio foliar e a matéria orgânica acumulada na coroa foliar de Aechmea aquilega de três habitats: Caatinga (Poço Verde), Mata Atlântica (Pirambu) e em um área
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/09/2011
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12. Traceability of poultry offal meal in broiler feeding using isotopic analysis (δ13C and δ15N) of different tissues
Our goal was to trace the inclusion of poultry offal meal (OM) in diets by using carbon (13C/12C) and nitrogen (15N/14N) isotopic ratios of different tissues in order to contribute for the development of an independent technology for the certification of the feeding of broilers reared on diets with no addition of animal ingredients. Eighty one-day-old chicks
Revista Brasileira de Ciência Avícola. Publicado em: 2010-03