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	Provedor de dados Anais da ABC (AABC) (1) Scientia Agricola (1) Rev. Bras. Bot. (1) Autor Benedito,Evanilde (1) Bialetzki,Andréa (1) Botteon,Victor Wilson (1) Higuchi,N. (1) Manetta,Gislaine I (1) Mardegan,S.F. (1) Martinelli,L.A. (1) Martinelli,Luiz A (1) Mastrangelo,Thiago (1) Moreira,Marcelo Zacharias (1) Nardoto,G.B. (1) Reinert,F. (1) Santi-Júnior,Adelino de (1) Mais... Palavra-chave Δ15N (3) Δ13C (2) Fish (1) Larval development (1) Macrodactylus pumilio (1) Naupactus cervinus (1) Stable isotopes (1) Trophic position (1) White-sand vegetation (1) Mais... Tipo do documento Info:eu-repo/semantics/article (3) Ano 2018 (1) 2011 (2) País Brazil (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Variation in nitrogen use strategies and photosynthetic pathways among vascular epiphytes in the Brazilian Central Amazon Rev. Bras. Bot. Mardegan,S.F.; Nardoto,G.B.; Higuchi,N.; Reinert,F.; Martinelli,L.A.. The variation in nitrogen use strategies and photosynthetic pathways among vascular epiphyte families was addressed in a white-sand vegetation in the Brazilian Central Amazon. Foliar nitrogen and carbon concentrations and their isotopic composition (δ15N and δ13C, respectively) were measured in epiphytes (Araceae, Bromeliaceae and Orchidaceae) and their host trees. The host tree Aldina heterophylla had higher foliar N concentration and lower C:N ratio (2.1 ± 0.06% and 23.6 ± 0.8) than its dwellers. Tree foliar δ15N differed only from that of the orchids. Comparing the epiphyte families, the aroids had the highest foliar N concentration and lowest C:N ratios (1.4 ± 0.1% and 34.9 ± 4.2, respectively). The orchids had more negative foliar δ15N values (-3.5 ±... Tipo: Info:eu-repo/semantics/article Palavras-chave: Δ13C; Δ15N; Stable isotopes; White-sand vegetation. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042011000100003 Trophic ecology of citrus pests based on stable isotope analysis Scientia Agricola Santi-Júnior,Adelino de; Botteon,Victor Wilson; Mastrangelo,Thiago; Moreira,Marcelo Zacharias. 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) emerges as an alternative technique to conventional studies of behavioral ecology because it is faster and may explain feeding behavior based on the food source for each species. Field sampling and laboratory experiments were carried out to examine the changes of carbon and nitrogen stable isotope ratios (δ13C and δ15N) among pests and host plants (C3 citrus and C4 grasses), providing means to examine trophic... Tipo: Info:eu-repo/semantics/article Palavras-chave: Macrodactylus pumilio; Naupactus cervinus; Δ13C; Δ15N. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162018000600504 Variability in the trophic position of larval fishes in theupper Paraná floodplain based on δ15N Anais da ABC (AABC) Manetta,Gislaine I; Bialetzki,Andréa; Martinelli,Luiz A; Benedito,Evanilde. The upper Paraná River floodplain is composed of several marginal lagoons, making it a natural breeding ground for many fish species at developmental stages. The aim of this study is to estimate the trophic positions of these fishes based on feed intake (measured via diet) and nitrogen assimilation (measured via δ15N). The monthly samplings were concentrated during the spawning season in the Ivinheima River, which is located in the upper Paraná River floodplain. The specimens were grouped into preflexion, flexion and postflexion stages. Trophic positions were estimated based on the isotope value of nitrogen and on diet. During the developmental stages of P. squamosissimus, there were significant differences in the isotope values of δ15N; for H. edentatus,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Fish; Larval development; Trophic position; Δ15N. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652011000200016 Registros recuperados: 3 Primeira ... 1 ... Última

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