Navegando por Assunto "Ilha de Germoplasma (Tucuruí, PA)"

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Acesso aberto (Open Access)
Caracterização dos atributos físicos e químicos de solos em áreas ex situ e in situ da ilha de germoplasma, uma reserva ambiental em Tucuruí, Pará
(Universidade Federal do Pará, 2020-03-09) NERI, Pablo Paulo Souza; VILHENA, Karyme do Socorro de Souza; http://lattes.cnpq.br/3071495983880548; https://orcid.org/0000-0001-9661-6683
The construction of hydroelectric power plants in the world is based on increasing demand for energy and river flood control. At the national level they are alternatives due to the great Brazilian hydroelectric potential. The Tucuruí Hydro-Power Complex is located in the Tocantins-Araguaia Basin and over 1,100 islands have been formed from the filling of the reservoir, inhabited by some 6,500 people, most of whom have vegetable extraction and animal husbandry as their source of income. Among these islands, one can highlight the Germoplasma Island, which is a permanent preservation area (APP) and is located 3 km from the Tucuruí dam. This island was created in order to guarantee the conservation of the plant genetic material of the region flooded by the dam. On the island of germplasm, some forest matrices planted on the courts are perishing. In other courts the productivity of the forest species is decreasing. This problem can hinder the extraction of seeds for seedling production and propagation. The purpose of this research was to determine the physical and chemical attributes of the soil and characterize the area in situ (PC3), shade planting (Q18) and full sun planting (Q17) ex situ area of the germplasm island located in the lake of the Tucuruí hydroelectric power station. Deformed composite samples were collected from 10 to 30 sub-samples in each area at depths of 0-10cm and 10-20cm. The samples were then prepared and analyzed in the Civil Engineering Laboratory of the Federal University of Pará at the Tucuruí University Campus. The chemical and physical results of the soils were submitted to the Tukey statistical test at 5% probability, Hierarchical Grouping Analysis (HCA) and Principal Component Analysis (PCA). The results of the soil chemical and physical analyses made it possible to understand the characteristics of the germplasm island areas. The highest levels of calcium and magnesium were found in Q17, due to the management performed in the plantation. Moreover, it presents high weathering and low organic matter content, and therefore, low Cation Exchange Capacity. In relation to the Q17 and Q18 planting areas, the shading planting provides the best conditions for the development of plant species and maintenance of soil quality, as it showed similarity between the chemical attributes of the natural vegetation area. From the data obtained and statistical analysis, there was greater similarity between the areas PC3 and Q18. Through the results of the Principal Component Analysis (PCA) it was possible to visualize the contribution of soil chemical attributes in the characterization of the studied areas. The soil chemical attributes that contributed the most were: ∆pH (-0.333), Al3+ (-0.332) and pH H2O (0.323), H+ (-0.534), Fe2+ (0.410) and AP (-0.379). Hierarchical Component Analysis (HCA) confirmed the results obtained in Principal Component Analysis (PCA).
Acesso aberto (Open Access)
Ostara: uma arquitetura de referência para coleta de dados em campo
(Universidade Federal do Pará, 2019) SOUZA, Marcos Felipe Ferreira Amazonas de; SANTOS, Viviane Almeida dos; http://lattes.cnpq.br/1489376127395764
Data collection is an important and recurring process for decision making, which is present in different areas. In general, there are several solutions developed to aid field data collection activities. However, such solutions focus on solving specific problems, causing a lack of uniformity in relation to basic characteristics belonging to the domain of data collection. To supply the need for a domain knowledge repository this work proposed the development of a reference architecture (RA) that serves as a model for the construction of systems that bellong to the data collection domain model and the subdomain of mobile data collection.In order to elaborate the proposed reference architecture, the ProSA-RA process was used, this process helps the iterative and incremental development of reference architectures. This process is represented in four steps, which aim to structure the development of reference architectures. After the elaboration of RA using the ProSARA process, we tried to instantiate an architectural prototype to be able to evaluate execution-time qualities belonging to the proposed RA. The architectural prototype was modeled based on the business requirements of the "Banco de Germoplasma" project maintained by the Eletrobras Eletronorte Agency. This project seeks to maintain information regarding animal and botanic species of the Tucuruí - PA region. The instantiated and implemented architectural portion constitutes a tool for phenological monitoring of the botanical species of the project. The evaluation of the architectural prototype performed with the domain experts demonstrated runtime-related qualities such as performance, security, functionality and usability. However, the achievements of further evaluations to obtain quality metrics are necessary, such as the evaluation of development quality elements such as modifiability, portability, integrability and interoperability.