Multidimensional Overlap
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. The trophic niche of Mesoclemmys vanderhaegei (Testudines: Chelidae): evidence from stable isotopes
ABSTRACT Ecological niche is the multidimensional space comprising the resources used by an organism. Intraspecific variation in resource exploitation is common in reptile populations to maximize coexistence of individuals. The use of stable isotope analysis is an effective tool when there are variations in resource exploitation, since it can provide quantit
Zoologia (Curitiba). Publicado em: 23/10/2017
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2. Composition and trophic structure of fish communities in the Ribeirão Bananal sub-basin, Parque Nacional de Brasília, biome Cerrado, DF / Composição e estrutura trófica da comunidade de peixes de riachos da sub-bacia do Ribeirão Bananal, Parque Nacional de Brasília, bioma Cerrado, DF
The purpose of this study was determined the composition and the trophic structure of fish communities in the Ribeirão Bananal sub-basin, which belongs to a well preserved Cerrado area in the National Park of Brasília, Brazil. Furthermore, due to a marked sazonality in this biome, it was examined the influence of environmental variations on the fish specie
Publicado em: 2008
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3. A ictiofauna do estuário do rio Itanhaém, SP, Brasil: dinâmica espaço-temporal e aspectos biológicos das espécies principais / Itanhaém River Estuary, SP, Brazil: Spatial and seasonal changes in fish assemblages and biological aspects of the principal species
The changes of the composition and the distribution of the fishes along the Itanhaém River Estuary were investigated, between May 2002 and April 2003. Biologic aspects of principal species were also included. The month sampling of the fishes was performed using otter trawls in three different areas in the estuary (A1, A2 and A3). Samples were also collected
Publicado em: 2007
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4. Resource partitioning and coexistence of syntopic populations of Hyla nana and Hyla sanborni (Anura, Hylidae) / Partilha de recursos e coexistência de populações sintópicas de Hyla nana e Hyla sanborni (Anura, Hylidae)
Hyla nana e Hyla sanborni são espécies proximamente relacionadas que ocorrem em simpatria em diversas áreas na América do Sul. Os objetivos deste trabalho foram medir e comparar a amplitude e a sobreposição de nicho destas espécies. As dimensões de nicho medidas foram a sazonalidade reprodutiva, sítio de vocalização, dieta, além da sobreposição
Publicado em: 2002
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5. Partilha de recursos e coexistÃncia de populaÃÃes sintÃpicas de Hyla nana e Hyla sanborni (Anura, Hylidae) / Resource partitioning and coexistence of syntopic populations of Hyla nana and Hyla sanborni (Anura, Hylidae)
Hyla nana e Hyla sanborni sÃo espÃcies proximamente relacionadas que ocorrem em simpatria em diversas Ãreas na AmÃrica do Sul. Os objetivos deste trabalho foram medir e comparar a amplitude e a sobreposiÃÃo de nicho destas espÃcies. As dimensÃes de nicho medidas foram a sazonalidade reprodutiva, sÃtio de vocalizaÃÃo, dieta, alÃm da sobreposiÃÃo
Publicado em: 2002
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6. A simple and efficient method for constructing high resolution physical maps.
This paper describes a simple and efficient walking method for constructing high resolution physical maps and discusses its applications to genome analysis. The method is an integration of three strategies: (1) use of a highly redundant library of 3Kb-long subclones; (2) construction of a multidimensional pool from the library; (3) direct application of a PC
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7. Multidimensional epistasis and the disadvantage of sex
Sex is thought to facilitate accumulation of initially rare beneficial mutations by allowing simultaneous allele replacements at many loci. However, this advantage of sex depends on a restrictive assumption that the fitness of a genotype is determined by fitness potential, a single intermediate variable to which all loci contribute additively, so that new al
The National Academy of Sciences.
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8. Structure of the acceptor stem of Escherichia coli tRNA Ala: role of the G3.U70 base pair in synthetase recognition.
The fidelity of translation of the genetic code depends on accurate tRNA aminoacylation by cognate aminoacyl-tRNA synthetases. Thus, each tRNA has specificity not only for codon recognition, but also for amino acid identity; this aminoacylation specificity is referred to as tRNA identity. The primary determinant of the acceptor identity of Escherichia coli t
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9. Molecular evolution of herpesviruses: genomic and protein sequence comparisons.
Phylogenetic reconstruction of herpesvirus evolution is generally founded on amino acid sequence comparisons of specific proteins. These are relevant to the evolution of the specific gene (or set of genes), but the resulting phylogeny may vary depending on the particular sequence chosen for analysis (or comparison). In the first part of this report, we compa