Ecological Dominance
Mostrando 13-24 de 64 artigos, teses e dissertações.
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13. Anthropization Effects on the Filamentous Fungal Community of the Brazilian Catimbau National Park
ABSTRACT The Caatinga biome features an exclusive endemic biodiversity, and is characterized by the presence of xerophytic, deciduous vegetation, high temperatures, and low rainfall. This important park has undergone anthropization, especially through extraction of firewood and timber and growing plants for raising goats. The objectives of this study were to
Rev. Bras. Ciênc. Solo. Publicado em: 24/08/2017
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14. Environmental severity promotes phylogenetic clustering in campo rupestre vegetation
The stress-dominance hypothesis postulates that the importance of competition in plant communities declines with increasing environmental stress while the importance of environmental filters increases. To test this hypothesis for campo rupestre vegetation, we analyzed phylogenetic diversity and community structure of angiosperm communities at two study sites
Acta Bot. Bras.. Publicado em: 2015-12
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15. An ecological and comparative analysis of parasites in juvenile Mugil liza (Pisces, Mugilidae) from two sites in Samborombón bay, Argentina
ABSTRACT Mugil liza Valenciennes, 1836 is an economically important food fish and has been recommended for aquaculture in South America. A total of 278 fishes were collected in the spring and summer of 2009 and 2010. These fish were sorted into sample groups according to their size class. We used Bayesian statistics and 95% credible intervals for each parame
Iheringia, Sér. Zool.. Publicado em: 2015-12
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16. Can ecological apparency explain the use of plant species in the semi-arid depression of Northeastern Brazil?
This study tested the ecological apparency hypothesis in the community of Barroquinha, in the municipality of Lagoa, Paraíba State, Brazil. We used the Use Value (UV) by testing the information obtained through three types of calculations: UVgeneral, UVcurrent, and UVpotential. The botanical sampling was conducted in two areas of the community (Preserved -
Acta Bot. Bras.. Publicado em: 2014-09
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17. Mosquito community composition in dynamic landscapes from the Atlantic Forest biome (Diptera, Culicidae)
Mosquito community composition in dynamic landscapes from the Atlantic Forest biome (Diptera, Culicidae). Considering that some species of Culicidae are vectors of pathogens, both the knowledge of the diversity of the mosquito fauna and how some environment factors influence in it, are important subjects. In order to address the composition of Culicidae spec
Rev. Bras. entomol.. Publicado em: 2014-03
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18. Availability and use of woody plants in a agrarian reform settlement in the cerrado of the state of Goiás, Brazil
Protected areas are important sources providing plant resources for human populations, and contributing to the livelihood and income of families. To test the ecological apparency hypothesis, that there is positive relationship between the visibility of a species and its use, we conducted an ethnobotanical survey in the protected area of the Itaúna rural set
Acta Bot. Bras.. Publicado em: 2013-09
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19. Composition and seasonal variation of brachyura and anomura (Crustacea, Decapoda) associated with brown mussel farms at Praia da Cocanha, Brazil
The composition and seasonal variation of brachyuran and anomuran species associated with mussel farms were evaluated at Praia da Cocanha, São Paulo between May 2007 and February 2008. Nine mussel ropes were sampled at random in each quarter, and 1,208 organisms were identified, comprising five families and 28 species. The most numerous species was the porc
Brazilian Archives of Biology and Technology. Publicado em: 2012-08
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20. Diversidade de estratégias ecológicas das espécies de árvore dominantes de uma floresta de terra firme da Amazônia Central / Diversity of ecological strategies of the dominant tree species from a terra-firme forest in Central Amazonia
As plantas têm diversos modos de resolver problemas como a escassez de recursos, o ataque de herbívoros ou a perda de água. O modo como uma planta resolve um desses problemas pode ser considerado uma tática e o conjunto dessas táticas constitui uma estratégia ecológica. As estratégias só são possíveis porque as plantas têm uma série de atributos
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/09/2011
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21. Comunidade e partilha ecológica de turdídeos (Aves: Passeriformes) em um fragmento urbano de floresta com araucárias em Guarapuava no Sul do Brasil / Community and ecological partitioning of trhushes (Aves: Passeriformes) in a urban forest fragment with araucaria in Guarapuava, southern Brazil
Ecological mechanisms that allow the coexistence of five species of the genus Turdus (Turdidae) in an urban fragment in souther Brazil seem to be not easily explained. In this context, the present work tried to comprehend how the birds community is structured as well as to investigate possible patterns and mechanisms that make possible the coexistence of two
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/06/2010
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22. Checklist comparison and dominance patterns of the fish fauna at Taim Wetland, South Brazil
O Sistema Hidrológico do Taim é um banhando subtropical localizado no sul do Brasil que abriga uma diversidade biológica excepcional. Em 1978, uma reserva ecológica foi estabelecida para proteger parte dessa área do crescente impacto de ações antrópicas nos seus arredores. Os peixes tem sido muito pouco investigados nessa região. Baseado em coletas
Publicado em: 2010
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23. Generalized entropy indices to measure α- and β-diversities of macrophytes
A family of entropy indices constructed in the framework of Tsallis entropy formalism is used to investigate ecological diversity. It represents a new perspective in ecology because a simple equation can incorporate all aspects of α-diversity, from richness to dominance and can be also related to a measure of species rarity. In addition, a generalized Kullb
Brazilian Journal of Physics. Publicado em: 2009-08
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24. Estudo e modelagem das dinâmicas estruturais de assembléias de formigas tropicais em diferentes escalas ecológicas
The ecological theory is built on models that can explain the relationships between organisms and their environment. However, if this is a science that integrates knowledge and benefited from interdisciplinary approaches due to the enormous complexity observed in ecosystems. In this context, the use of mathematical tools has been extremely important for the
Publicado em: 2009