Ecological Modelling
Mostrando 13-21 de 21 artigos, teses e dissertações.
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13. Pulsos de inundação, padrões de diversidade e distribuição de espécies arbóreas em uma floresta ribeirinha no sul do brasil
Formações ribeirinhas são áreas de transição entre os sistemas terrestre e aquático, caracterizadas por elevada heterogeneidade ambiental e por um amplo espectro de elementos biológicos e valores socioeconômicos. Contrário às grandes bacias hidrográficas, onde geralmente os pulsos de inundação são sazonais, os rios de pequeno porte apresentam
Publicado em: 2008
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14. Influência da estrutura da paisagem sobre a persistência de três espécies de aves em paisagens fragmentadas da Mata Atlântica / Influence of the landscape structure on the persistence of three bird species in fragmented Atlantic Forest landscapes
A perda e fragmentação de habitats são, atualmente, as principais ameaças à conservação da biodiversidade. Espécies que outrora tinham sua distribuição contínua são forçadas a sobreviver de forma segmentada, em populações menores e mais susceptíveis à extinção. Segundo a teoria de metapopulações, se extinções locais em fragmentos espec
Publicado em: 2007
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15. Morfometria geometrica e modelagem matematica em Lantana camara L. (Verbenaceae) / Mathematical modeling and mporphometric relations in the vegetative body of Lantana camara L. (Verbenaceae) in Brazil
The taxonomy of Lantana camara has been the target of discussion by taxonomists all over the world. The morphological, ecological and chemical plasticity observed is very extensive. Some autors consider that L. camara is a species complex instead of a monotypic taxon, composed of up to 150 different taxa. In this sudy, the variability of L. camara is studied
Publicado em: 2006
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16. "Modelagem espacial para atividades de visitação pública em áreas naturais". / GIS environmental modelling for recreational activities in protected areas
Recreational activities in wildland areas are being considered a way to achieve development and protect the environment. However, without a planning program that considers the factors related to their sustainability, they can cause serious ecological, economic and social impacts. In Brazil, in spite of the recent concerns about recreational problems, there i
Publicado em: 2003
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17. Geographic data bank and artificial neural network: technologies of support for the territorial management. / Bancos de dados geográficos e redes neurais artificiais: tecnologias de apoio à gestão do território.
This work presents the development of a tool to support the land management called Geographical Data Base (GDB) formed by a georrefered data base, a data base management system (DBMS), a geographic information system (GIS) and an artificial neural net simulator (ANNS). The methodological approach allowed the conceptual modelling of the methodology of the ZEE
Publicado em: 1999
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18. Evolution in plant populations as a driver of ecological changes in arthropod communities
Heritable variation in traits can have wide-ranging impacts on species interactions, but the effects that ongoing evolution has on the temporal ecological dynamics of communities are not well understood. Here, we identify three conditions that, if experimentally satisfied, support the hypothesis that evolution by natural selection can drive ecological change
The Royal Society.
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19. Modelling inequality in reported long term illness in the UK: combining individual and area characteristics.
STUDY OBJECTIVE: To assess the nature of the relation between health and social factors at both the aggregated scale of geographical areas and the individual scale. DESIGN AND SETTING: The individual data are derived from the sample of anonymised records (SAR) from the census of 1991 in Great Britain, and are combined with area data from this census. The eco
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20. Monitoring and projecting cancer incidence in Saarland, Germany, based on age-cohort analyses.
STUDY OBJECTIVE--The aims were (1) to monitor and compare incidence rates of cancer from successive birth cohorts in Saarland over the period from 1968 to 1987; (2) to project cancer incidence in Saarland in 1988-2002 in order to provide guidelines for health policy planning. DESIGN--This was an ecological study of overlapping birth cohorts of women and men.
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21. Small variations in multiple parameters account for wide variations in HIV-1 set-points: a novel modelling approach.
Steady-state levels of HIV-1 viraemia in the plasma vary more than a 1,000-fold between HIV-positive patients and are thought to be influenced by several different host and viral factors such as host target cell availability, host anti-HIV immune response and the virulence of the virus. Previous mathematical models have taken the form of classical ecological