Intraspecific Competition
Mostrando 13-24 de 40 artigos, teses e dissertações.
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13. Ecologia da produção e da competição intra-específica do Eucalyptus grandis ao longo de um gradiente de produtividade no estado de São Paulo / Production ecology and intra-specific competition of Eucalyptus grandis across a gradient of productivity in São Paulo State
A produtividade dos plantios de eucalipto no Brasil apresentou ganhos significativos nas últimas décadas devido a avanços em melhoramento genético e silvicultura. Contudo, a produção de madeira representa apenas uma fração da produtividade primária bruta (GPP). Avaliar fluxos e partição de carbono (C) entre os diferentes componentes da floresta, e
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/02/2012
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14. Effects of stocking density on dispersal behavior of Brazilian freshwater dourado (Salminus brasiliensis) in a subtropical river headwater
Dois lotes de 61 e 133 dourados (Salminus brasiliensis Cuvier) juvenis foram introduzidos nas cabeceiras do rio dos Sinos. O intervalo entre as solturas foi de 41 dias. Uma subamostra de 25 peixes foi marcada com radiotransmissores. A dispersão dos indivíduos após soltura mostrou um padrão dependente da densidade. Durante os primeiros dez dias a distânc
Neotropical Ichthyology. Publicado em: 10/05/2012
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15. Variación intraespecifica en el uso de Percha Nocturna de Basiliscus galeritus (Sauria: Corytophanidae) en Isla Palma, Pacífico Colombiano
Variations in night perch use reflects the partitioning of resources, which allows coexistence by reducing intraspecific competition between individuals of different sexes and sizes. In this study we evaluated nocturnal perch use for males, females and juveniles of Basiliscus galeritus in Isla Palma - Pacífico Colombiano. In April of 2011, individuals were
Pap. Avulsos Zool. (São Paulo). Publicado em: 2012
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16. Ecologia trÃfica de Rhinella hoogmoedi Caramaschi e Pombal, 2006 (Anura, Bufonidae) em uma floresta Ãmida do estado do CearÃ, Brasil / Trophic ecology of Rhinella hoogmoedi Caramaschi e Pombal, 2006 (Anura, Bufonidae) in a humid forest in the State of CearÃ, Brazil.
The understanding of trophic relations among species is essential for the comprehension of their ecological evolutionary history, as well as in the understanding of how communities are structured. The consumption of the same food resource by two or more species may result in the evolution of mechanisms capable of reducing this inter- specific competition, wi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/05/2011
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17. Genetic evaluation of the mating system in the blue-and-yellow macaw (Ara ararauna, Aves, Psittacidae) by DNA fingerprinting
More than 90% of birds are socially monogamous, although genetic studies indicate that many are often not sexually monogamous. In the present study, DNA fingerprinting was used to estimate the genetic relationships between nestlings belonging to the same broods to evaluate the mating system in the socially monogamous macaw, Ara ararauna. We found that in 10
Genetics and Molecular Biology. Publicado em: 22/12/2010
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18. Rendimento de graos de soja afetado pelo espacamento entre linhas e fertilidade do solo / Soybean grain yield affected by row spacing and soil fertility
Foram realizados dois experimentos com soja, na Estação Experimental Agronômica da Universidade Federal do Rio Grande do Sul, município de Eldorado do Sul - RS. Na safra de 1994/95, utilizou-se duas cultivares (FT-Saray e OCEPAR 14 - ciclo precoce e hábito de crescimento determinado), em dois espaçamentos entre linhas (20 e 40cm) e solo com dois nívei
Publicado em: 2010
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19. Seed vigor and performance of maize plants in the field / Vigor de sementes e desempenho de plantas na cultura de milho
High physiological potential seeds allow faster seedling emergence and higher plant initial growth than low physiological potential seeds. Within plant populations, the uneven seedling emergence could affect plant competitive ability for resources (light, water and soil nutrients) and have direct effects on plant grain yield and population grain yield. There
Publicado em: 2010
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20. Construction of arboreal nests by brown-nosed coatis, Nasua nasua (Carnivora: Procyonidae) in the Brazilian Pantanal
The construction of arboreal nests is rare among mammals in the order Carnivora. However, coatis (Procyonidae: Nasua Storr, 1780) build arboreal nests that are used for resting or birthing. Here we describe Nasua nasua (Linnaeus, 1766) nests located during a telemetry study of coatis in the Brazilian Pantanal. Coati nests were all "bird-like", that is, open
Zoologia (Curitiba). Publicado em: 2009-09
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21. Germinação, competitividade com a cultura da soja e resposta biológica a aplicações de glyphosate para plantas de trapoeraba (Commelina benghalensis L.) / Germination, competitiveness with the soybean crop and biologic response to glyphosate applications of Bengal dayflower plants (Commelina benghalensis L.)
In areas where the herbicide glyphosate is used frequently, populations of the weed Bengal dayflower (Commelina benghalensis) have been selected, due to the species tolerance to the action of that herbicide. This way, the use of alternative management is necessary, which are dependent upon deep knowledge on species biology; as well as, the efficient chemical
Publicado em: 2009
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22. Aspects of spatial pattern, habitat association and herbivory density-dependent of Calophyllum brasiliense Camb. (Clusiaceae) in restinga alta florest, Ilha do Cardoso, Cananéia. SP. Brazil / Aspectos da distribuição espacial, associação com hábitat e herbivoria dependente da densidade de Calophyllum brasiliense Camb. (Clusiaceae) em restinga alta na Ilha do Cardoso, Cananéia, SP, Brasil
Several theories, including different factors and mechanisms, have been postulated to explain the high tree species coexistence in tropics, which remains an unsolved question that continues to pose a challenge to plant ecologists. Population-level tree dynamics studies contribute to a better understanding of the processes acting on community-level. The aim o
Publicado em: 2009
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23. Estudos morfologicos e ecologicos de especies de Lonchaeidae (Diptera) em frutos de Rubiaceae, Myrtaceae, Roseae e Fabaceae / Morphological and ecological studies of Lonchaeidae (Dipter: Tephritoidea) in fuits of Rubiaceae, Rosaceae and Fabaceae
Brazil performs excellent climate conditions to become one of the largest producers of tropical fruits in the world. Despite the Brazilian role in world production of fruit, its participation in the international market is too low, due some trend obstacles and the guarantee of pest-free zones it has to offer. Fruit flies (Diptera: Tephritidae e Lonchaeidae)
Publicado em: 2008
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24. Biological characteristics and herbicide susceptibility of five weed species of the Amaranthus genus. / Características biológicas e suscetibilidade a herbicidas de cinco espécies de plantas daninhas do gênero Amaranthus
Plant species classified in the Aramanthus genus are frequently found infesting brazilian agricultural areas, although there are few researches that evaluated the biological characteristics and the control of these species. Therefore, this work was conducted with the objective of analyzing the germination, the growth and the development, estimating the leaf
Publicado em: 2007