Navegando por Orientadores "SILVA, Karina Dias da"

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Acesso aberto (Open Access)
Efeito da perda de cobertura florestal sobre a diversidade de peixes de riachos em uma zona de transição Cerrado-Amazônia
(Universidade Federal do Pará, 2019-02-28) FREITAS, Pâmela Virgolino; JIQUIRIÇÁ, Paulo Ricardo Ilha; http://lattes.cnpq.br/3392388693636935; SILVA, Karina Dias da; http://lattes.cnpq.br/2271768102150398
Currently, the expansion of the agricultural frontier in the Amazon represents a profound change in the world’s vegetation cover. This expansion causes decrease of forest cover, affecting the environmental integrity of streams, as well as the richness of associated communities. We aimed to evaluate the effects of loss of forest cover on the physical integrity of streams, and on the taxonomic and functional diversity of fish assemblages in a Cerrado-Amazon transitional zone. We sampled nine streams in the Alto Xingu river basin. The streams possess microbasins covered by different percentages of transitional Cerrado-Amazon forest and croplands. We did not detect the effect of loss of forest cover on the physical integrity of streams, and neither on fish taxonomic diversity. However, we found a negative effect on the functional diversity. The physical integrity of streams was not associated with taxonomic and functional diversity of fish assemblages. The conversion of forest areas to croplands, on the riparian zone, affects negatively the functional richness of fish assemblages, acting as an environmental filter, leading to the disappearance of species that could have performed important ecosystem functions. Furthermore, the establishment of restoring and conservation strategies of areas affected by deforestation must be a priority on all streams drainage systems, especially on the riparian zone scale, to minimize impacts on species. To understand which factors can better structure fish assemblages in streams, it is necessary to do research, that can give basis to formulate strategies for the preservation of those organisms.
Acesso aberto (Open Access)
Histórico do uso da terra e composição de gerromorpha (insecta: subordem heteroptera) em igarapés da Transxingu
(Universidade Federal do Pará, 2024-02-28) COSTA, Iluany da Silva; SILVA, Karina Dias da; http://lattes.cnpq.br/2271768102150398; https://orcid.org/0000-0001-5548-4995
The Amazon Forest faces threats due to the increasing exploitation of natural resources driven by the economic growth of the region, intensified since the exploitation of rubber between 1879 and 1912. Since the 1960s, the government has implemented economic development programs, territorial occupation and construction of highways, such as BR-230, also known as Transamazônica. This highway had a significant impact on the southwest region of Pará, especially in the Xingu River basins, contributing to disorderly deforestation and harming biodiversity, especially on the banks of water bodies. To deal with environmental problems, several analysis and monitoring methods have been developed, including remote sensing, which allows large areas to be studied in a short time. Biological monitoring is also used, as some organisms, such as aquatic insects from the infraorder Gerromorpha, are sensitive to environmental changes and can indicate the quality of the habitat. Therefore, a recent study analyzed the history of land use in the region over the last 30 years and evaluated the composition of the Gerromorpha infraorder in Transxingu streams. A large loss of vegetation cover has been observed in recent decades, especially close to roads, often related to livestock farming. However, there has been a reduction in deforestation over time, possibly due to conservation measures, such as the Action Plan for the Prevention and Control of Deforestation in the Legal Amazon (PPCDAm), creation of extractive reserves, recognition of indigenous lands and the Cadastre Rural Environmental (CAR). In the study of the composition of the Gerromorpha infraorder in the Transxingu streams, it was found that many samples were influenced by deforestation over the years. Furthermore, it was found that the integrity index of the stream's physical habitat can be more effective than geospatial metrics in assessing environmental impact. Although there were no significant differences in the Gerromorpha community between preserved and altered environments, a variation in the abundance of these organisms was noticed along environmental gradients. This indicates that the community responds to changes in the environment, regardless of the presence of specific bioindicator species. Therefore, there is a need for more studies in highly preserved environments to better understand these dynamics.
Acesso aberto (Open Access)
Histórico do uso da terra e composição de gerromorpha (insecta: subordem heteroptera) em igarapés da Transxingu
(Universidade Federal do Pará, 2024-02-28) COSTA, Iluany da Silva; SILVA, Karina Dias da; http://lattes.cnpq.br/2271768102150398; https://orcid.org/0000-0001-5548-4995
The Amazon Forest faces threats due to the increasing exploitation of natural resources driven by the economic growth of the region, intensified since the exploitation of rubber between 1879 and 1912. Since the 1960s, the government has implemented economic development programs, territorial occupation and construction of highways, such as BR230, also known as Transamazônica. This highway had a significant impact on the southwest region of Pará, especially in the Xingu River basins, contributing to disorderly deforestation and harming biodiversity, especially on the banks of water bodies. To deal with environmental problems, several analysis and monitoring methods have been developed, including remote sensing, which allows large areas to be studied in a short time. Biological monitoring is also used, as some organisms, such as aquatic insects from the infraorder Gerromorpha, are sensitive to environmental changes and can indicate the quality of the habitat. Therefore, a recent study analyzed the history of land use in the region over the last 30 years and evaluated the composition of the Gerromorpha infraorder in Transxingu streams. A large loss of vegetation cover has been observed in recent decades, especially close to roads, often related to livestock farming. However, there has been a reduction in deforestation over time, possibly due to conservation measures, such as the Action Plan for the Prevention and Control of Deforestation in the Legal Amazon (PPCDAm), creation of extractive reserves, recognition of indigenous lands and the Cadastre Rural Environmental (CAR). In the study of the composition of the Gerromorpha infraorder in the Transxingu streams, it was found that many samples were influenced by deforestation over the years. Furthermore, it was found that the integrity index of the stream's physical habitat can be more effective than geospatial metrics in assessing environmental impact. Although there were no significant differences in the Gerromorpha community between preserved and altered environments, a variation in the abundance of these organisms was noticed along environmental gradients. This indicates that the community responds to changes in the environment, regardless of the presence of specific bioindicator species. Therefore, there is a need for more studies in highly preserved environments to better understand these dynamics.
Acesso aberto (Open Access)
Percepção socioambiental dos alunos de escolas públicas em Altamira-Pa
(Universidade Federal do Pará, 2025-02-28) PIMENTEL, Andria Jaizza dos Santos; SILVA, Karina Dias da; http://lattes.cnpq.br/2271768102150398; https://orcid.org/0000-0001-5548-4995
Environmental education is how interactions between society and the environment are perceived. Environmental education acquired at school is advantageous because it promotes reflective behaviors about the relevance of sustainable development. This study aims to analyze the application of environmental education in secondary education in public schools. The research examined students' views through the application of questionnaires in the classroom, aiming to identify the implementation of environmental education and the transmission of this knowledge. It was found that, even though environmental education is widely debated, there are still few fixed projects being developed specifically on the topic. In addition, students have difficulty identifying socio-environmental problems, impacts and the environmental context in which they live. It is concluded that the active participation of schools is fundamental for the formation of knowledge and human awareness about the importance of disseminating environmental education. In this sense, as a way of supporting the school network in the formation of new citizens aware of their role in the world, a guiding booklet was created containing theory world, a guiding booklet was created containing theory, games, activities, guided tours and a quiz to support the implementation of the theme.
Acesso aberto (Open Access)
Utilização de índices bióticos para avaliação da qualidade ecológica d’água e integridade de igarapés amazônicos
(Universidade Federal do Pará, 2024-04-30) PAES, Gerson Rosivan de Lima; SILVA, Karina Dias da; http://lattes.cnpq.br/2271768102150398; https://orcid.org/0000-0001-5548-4995
Freshwater aquatic ecosystems are important in ecological, social and economic aspects, and benthic macroinvertebrates are extremely important for maintaining the structure and functioning of these ecosystems. In this sense, some studies relate agricultural production, especially those based on monocultures, to negative impacts on the ecosystems where they are installed, resulting in environmental degradation and deterioration of natural resources. Thus, the study investigates the ecological quality of water and the integrity of streams in oil palm cultivation areas. Using the application of biotic and abiotic indices, such as genus richness, BMWP, ASPT and HII, and also the application of Generalized Linear Models (GLM) to detect environmental changes. The results demonstrate a high richness of EPT taxa, measuring good ecological water quality in the streams, confirmed by the BMWP and ASPT analyses. The GLM model showed negative relationships between temperature and taxon richness and BMWP, and a positive relationship between BMWP and HII. In conclusion, the results support the view that the joint use of indices (biotic and abiotic) offers a broader approach to the assessment of aquatic ecosystems, helping to understand the health and integrity of these environments.
Acesso aberto (Open Access)
Utilização de índices bióticos para avaliação da qualidade ecológica d’água e integridade de igarapés amazônicos
(Universidade Federal do Pará, 2024-04-30) PAES, Gerson Rosivan de Lima; SILVA, Karina Dias da; http://lattes.cnpq.br/2271768102150398; https://orcid.org/0000-0001-5548-4995
Freshwater aquatic ecosystems are important in ecological, social and economic aspects, and benthic macroinvertebrates are extremely important for maintaining the structure and functioning of these ecosystems. In this sense, some studies relate agricultural production, especially those based on monocultures, to negative impacts on the ecosystems where they are installed, resulting in environmental degradation and deterioration of natural resources. Thus, the study investigates the ecological quality of water and the integrity of streams in oil palm cultivation areas. Using the application of biotic and abiotic indices, such as genus richness, BMWP, ASPT and HII, and also the application of Generalized Linear Models (GLM) to detect environmental changes. The results demonstrate a high richness of EPT taxa, measuring good ecological water quality in the streams, confirmed by the BMWP and ASPT analyses. The GLM model showed negative relationships between temperature and taxon richness and BMWP, and a positive relationship between BMWP and HII. In conclusion, the results support the view that the joint use of indices (biotic and abiotic) offers a broader approach to the assessment of aquatic ecosystems, helping to understand the health and integrity of these environments.
Acesso aberto (Open Access)
Variáveis físicas, químicas e microbiológicas da água de consumo humano no Brasil: análise cienciométrica de produção científica
(Universidade Federal do Pará, 2022-04) PEREIRA, Jorge Luiz da Silva; BRASIL, Danielle Ribeiro; http://lattes.cnpq.br/1079820233532683; https://orcid.org/0000-0001-6404-1731; JUEN, Leandro; http://lattes.cnpq.br/1369357248133029; https://orcid.org/0000-0002-6188-4386; SILVA, Karina Dias da; http://lattes.cnpq.br/2271768102150398; https://orcid.org/0000-0001-5548-4995
Water is an essential and fundamental substance for life, whose quality is directly related to the appearance of various diseases. The water quality supplied to the population can be evaluated by physical, chemical and microbiological parameters. This study aimed to evaluate the increase in knowledge water quality for human consumption in Brazil using the scientometric method. A systematic search for information was carried out in the Scielo, Scopus, Web of Science and Google academic databases. We seek to evaluate the physical, chemical and microbiological water quality for human consumption in Brazil through a systematic literature review. We obtained 843 concatenated articles, of which 62 articles met inclusion criteria. There was an investigation of the water quality in 10 sources of water abstraction, 20 numbers of species of microorganisms were classified, being 15 species of bacteria and 6 of protozoa, were Escherichia coli, Salmonella spp, and for protozoa Giardia spp. were the most frequent. The variables that most favor the environment for the emergence of pathogenic microorganisms found in the studies were: Dissolved Oxygen (DO), hydrogenic potential (pH), Nephelometric Turbidity Unit (UNT), Electrical Conductivity (EC), Temperature (T) and Demand Oxygen Biochemistry (BOD). The Northeast region presented variables with higher values than expected, as well as the highest number of publications. Although we have detected an increase in the number of studies, some questions such as demographic aspects, socioeconomic conditions and environmental health still remain unanswered and are important questions to be considered in future studies.