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 Caracterização da poluição por resíduos sólidos na linha-do-deixa em duas praias do litoral norte de Pernambuco(2020-02-03) Nascimento, Eridiana Angélica Dias do; Melo Júnior, Mauro de; http://lattes.cnpq.br/6735233221650148; http://lattes.cnpq.br/0755007615566832Solid waste improperly disposed of on beaches poses risks to health and to the entire marine ecosystem. The objective of this work was to analyze and compare the solid residues found on the beaches of Maria Farinha and Casa Caiada in Pernambuco, evaluating the number of residues, observing possible associations with living beings and identifying the most likely sources. In 2019, three collections were made at each beach, in Maria Farinha, on November 25, at 8:49 am, December 13 and 26, at 10:42 am and 10:30 am respectively; and Casa Caiada, on November 27, at 10:46 am, December 14 and 27, at 11:20 am and 10:46 am, respectively. For the collection, a transect 1 m wide by 10 m long, whose center was the line-of-cue (maximum level of the high tide), was arranged in three points of the beaches, with a distance of 100 m between them. The collected items were quantified, weighed and measured. They were classified according to the composition: plastic, metal, paper, glass and organic, observed using a stereomicroscope to identify possible associated living beings and, finally, the possible sources of the analyzed items were defined. In total 141 items were collected during the three collection days at each beach, 41 at Maria Farinha beach and 100 at Casa Caiada beach. Associations of living beings were found mainly with plastic material residues, these organisms being macroalgae (arribada), microalgae (perifiton), oysters and barnacle, found in Maria Farinha. While at Casa Caiada beach, associations were found with items of plastic and metal material, these being polychaeta and gastropod tubes, respectively. The results show that the pollution comes mainly from what is consumed and discarded by users.Item Avaliação ambiental do estuário do Capibaribe por intermédio da fauna planctônica: estrutura e indicadores biológicos da qualidade da água(2019-12-12) Cruz, Maria Mylena Oliveira da; Melo Júnior, Mauro de; http://lattes.cnpq.br/6735233221650148; http://lattes.cnpq.br/7317426286930736The general objective of this work was to evaluate a heavily polluted estuary (Capibaribe) through the zooplankton community and verify its potential use as a bioindicator of water quality. To test the hypothesis that in the Capibaribe estuary, the water quality condition is eutrophicated to the point of sustaining (i) a zooplankton community formed by species indicative of abundant particulate organic matter, low oxygenation and high turbidity and (ii) the establishment of small populations dominated mainly by rotifers, the campaigns were carried out in the urban area of the river in the city of Recife (Pernambuco), in three sectors based on the salinity gradient: Euhaline, Polyhaline, Meso-oligohaline and 9 collection stations. Six campaigns were carried out, always during low tide. Data regarding environmental variables were measured from a Horida U-52 probe. Zooplankton samples were collected by filtering a minimum of 100 L through a plankton net (45 µm) and a graduated bucket and fixed with 4% saline formaldehyde. The bioindication of taxa was evaluated by the Indication Value (IndVal) method, where ten species belonging to the Rotifera group, Copepoda and Polychaeta larvae were found. For the zooplankton community, 46 taxa belonging to the groups Rotifera, Annelida (Polychaeta), Mollusca (velliceroy of Gastropoda), Crustacea (Copepoda, Cladocera, Decapoda, Cirripedia), Chaetognatha and Chordata (fish larvae and eggs) were recorded. Rotifera was the most frequent group, especially Brachionus angularis (81.48%), the mean density was 625.4+-731.8 ind. L-1. The highest richness was in the Euhaline (dry) and Meso-oligohaline (rainy) sectors, the rotifer dominance and diversity were higher in the Meso-oligohaline sector for both periods. The study proved the hypotheses that the estuary is dominated by smallsized species and bioindicators of abiotic factors that indicate pollution, showing that the Capibaribe River estuary is being affected by anthropic disturbance and that bioindicator species can be used for water quality monitoring.Item Avaliação microbiológica da água e do camurupim (Megalops atlanticus) na Lagoa do Araçá, Recife, PE, Brasil(2018) Silva, Maria Karollyna Gomes da; Shinohara, Neide Kazue Sakugawa; http://lattes.cnpq.br/7105928729564845; http://lattes.cnpq.br/5632033938926317The fish are important protein sources for feeding human being, however they can be vehicles of diverse pathogenic microrganisms for the public health. When it has pollution, the environment in which these animals are inserted if it becomes a way of bacteriological contamination, influencing in microbiota of the fish. Soon, if it makes not only necessary to monitor the quality of the food, but also to follow the water of where it was removed. The Lagoon of the Araçá, situated in Recife-PE, is inserted in a Unit of Conservation of the Nature, however, the great amount of and effluent domestic and industrials who receive daily has caused increasing alteration and degradation in the local ecosystem. Ahead to this problematic one, the present study it had as objective to evaluate the microbiological quality of the water and the Megalops atlanticus in the Lagoon of the Araçá. In the period of October of 2017 the June of 2018, water collections had been carried through for microbiological analyses. The samples of fish had been acquired from local fishing in the period of August of 2017 the June of 2018, for determination of the centesimal composition; of the percentage of eatable parts after-processing and microbiological evaluation using as indicating total and thermotolerant coliforms, Staphyloccocus aureus, Salmonella sp., Pseudomonas spp. e Clostrídio reducing sulfite 46ºC (Clostridium perfringens). The gotten results disclose high concentrations of total and thermotolerant coliforms in the water of the Lagoon of the Araçá, being above of the standards established in the Resolution nº 357/2005 of the CONAMA. The results found in relation to the fish are in compliance with the RDC nº 12/2001 of the ANVISA, but we do not have to discard the risk how much to the consumption due to the joined concentrations of bacteria of fecal origin, that confirm the contamination in the estuary for pathogen proceeding from the oustings of effluent. In accordance with the results of the centesimal composition, were observed that the Megalops atlanticus is a lean fish with raised protein text, and that its initial weight influences the incomes of filet, not eatable head and residues. These data assist how much to the information of this fish in the Lagoon of the Araçá and alert how much to the risk in the consumption for the population. In front of this, is recommendable that the governmental bodies search to consider action for the improvement of the sanitary conditions of the Lagoon of the Araçá, especially the adequate treatment of the domestic sewers that affect directly in the dynamics of this ecosystem.