01. Universidade Federal Rural de Pernambuco - UFRPE (Sede)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/1
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Resultados da Pesquisa
Item O plâncton como ferramenta de difusão científica e ambiental - uma breve revisão(2023-04-28) Santos, Sofia Moura; Melo Júnior, Mauro de; http://lattes.cnpq.br/6735233221650148; http://lattes.cnpq.br/2854114554272022Plankton corresponds to a group of organisms that are carried by currents, and is very important in the primary production of the food chain, maintenance of the marine ecosystem, in addition to bioindication of the environment in which it is inserted. Even so, there are few people who have this notion about this portion of living beings in aquatic ecosystems. Within this context, there is a need to raise awareness of how plankton is used as a tool for scientific dissemination and environmental education. Thus, the work aims to explore and synthesize the use of plankton as a tool for scientific dissemination and environmental education, especially in Brazil. A bibliographical research was carried out, with different combinations of words in the Google Scholar, Scielo and Science Direct databases. After analyzing the titles and abstracts, the data were passed through the exclusion and selection methods. In all, 28 papers were raised relating Plankton as a tool for Scientific Dissemination and/or Environmental Education. Analyzing the results, it was seen that it is necessary to boost national publication, considering that there is a deficiency in literature published in scientific vehicles. Most of the studies (25%) approach plankton and its theory in a more synthesized way, and in second place we have plankton being used as a source to measure water quality (21.4%). There were still manifestations of plankton being approached as the main producer of oxygen, and its importance in the estuarine environment. Among the tools adopted by the scientists, the use of lectures for national and international articles (>46%) is observed. It is concluded that it is necessary that methods and experiences to encourage the environmental education of plankton are increasingly disseminated and discussed.Item Microplásticos do plâncton na porção norte da APA Costa dos Corais (Tamandaré, Brasil)(2019-12-13) Ferreira, Lucas Xavier; Melo Júnior, Mauro de; http://lattes.cnpq.br/6735233221650148; http://lattes.cnpq.br/7507756194543034Microplastics are particles smaller than 5 mm and can be broadly classified as: filamentous, hard fragments and soft fragments. These particles are among the main current solid contaminants in the marine environment. Such fragments can be released into the environment in different ways, such as degradation itself through biotic or abiotic factors. After being degraded, these particles can be suspended in the water column, thus being able to be ingested by organisms, especially filters at the base of the food chain. The work aims to characterize the plankton microplastics in the waters that bathe the northern portion of the Costa dos Corais Environmental Protection Area, in Tamandaré (PE), aiming at the evaluation of three planktonic compartments in the area (estuarine plume, in the reefs and in the bay ). Samples from 4 campaigns carried out between Sep / 2017 and Mar / 2018 were analyzed, aiming to sample periods with different rainfall regimes, always at low water (to better establish the influence of estuarine plumes). The analyzed microplastics were quantified and classified according to type. To confirm the visually screened microplastics, tests were performed with nitric acid (HNO3). The results show that there is a higher incidence of filamentous microplastics (12 ± 13 mp / m³), compared to other types. The presence of filamentous microplastics reached an average density of 16.08 ± 16.22 mp m³ in the plume, in the dry period, and in the rainy period it had an average of 21.62 ± 20.77 mp m³ in the reefs. . The densities of filamentous microplastics were significantly different between points (plume, bay and reefs). In each period, even with this variation between the points, the data indicate that there was a variation between the points, but if compared to other studies, the variation is not significant, although the bay has shown variation in relation to the other areas. In the present study, the seasonal period did not have a significant influence on the increase in the presence of microplastics in the studied points, even though microplastics are common in estuarine systems in several parts of the world, the fact that there were no seasonal differences in the studied points ( it was expected that during the rains the occurrence of microplastics would be higher) due to the insertion of the Ilhetas and Mamucabas estuaries in a protected region (APA Guadalupe and ReBio de Saltinho).Item Influência da alimentação natural, Perifíton, no desenvolvimento de Acará bandeira - Pterophyllum scalare(2021-12-02) Ramos, Gabriela de Albuquerque; Porto Neto, Fernando de Figueiredo; http://lattes.cnpq.br/1475750525654086; http://lattes.cnpq.br/5708959546281094Aquarism is the technique of raising fish and plants inside aquariums, ponds or artificial lakes, for research or hobby purposes. With the great demand for ornamental fish, the hunting of fish in the natural environment increased, and thanks to aquarists from some countries, large-scale ornamental fish farming was created. It is crucial to inform that ornamental fish farming is a work of fish production in captivity for commercial purposes where tanks and aquariums are nothing like household ornamentation and establishments, however, the technologies used for the production of aquarium fish are, for many times, similar to those of the beef farm. One of the biggest problems in aquarium nutrition is related to the amount of different species kept in an aquarium, whether it is a residential or public aquarium, which can thus have countless combinations of preferences and food requirements. As in conventional fish farming, nutrition in ornamental fish farming continues to be the item with the highest cost in breeding, which does not differ from other animal production industries, in which nutrition is also the item with the highest expenditure. However, in contrast to these activities, in ornamental fish farming, numerous particularities make the optimization of feeding a difficult practice, leading to lower feed efficiency. Pterophyllum scalare, the Flag acara, is a small group of freshwater, tropical omnivorous fish of Amazonian origin, feeding on phyto and zooplankton, even small aquatic invertebrates in their free range. In captivity it is common to give dry food, and live food may be given periodically. This research aimed to raise data on the acceptance of periphyton/plankton as nutritional and economic potential for producers of ornamental fish. In the methodology, 120 fish were used, divided into 3 treatments, highlighting that periphyton/plankton becomes a nutritional supplement when offered together with the ration and a maintenance food when used alone, concluding that the use of live food is a great way to reduce the costs of animal nutrition in addition to ensuring the survival of the animal in times of scarcity.