Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-06-02T22:45:04Z No. of bitstreams: 1 RafaelVictorDeMeloSilva_DISSERT.pdf: 11731929 bytes, checksum: 434869a7e58a0837ddd3098a90a82d0f (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-06-09T19:52:30Z (GMT) No. of bitstreams: 1 RafaelVictorDeMeloSilva_DISSERT.pdf: 11731929 bytes, checksum: 434869a7e58a0837ddd3098a90a82d0f (MD5) / Made available in DSpace on 2017-06-09T19:52:30Z (GMT). No. of bitstreams: 1 RafaelVictorDeMeloSilva_DISSERT.pdf: 11731929 bytes, checksum: 434869a7e58a0837ddd3098a90a82d0f (MD5) Previous issue date: 2017-02-24 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / O homem sempre buscou instalar sua infraestrutura de ocupa??o, defesa e sobreviv?ncia pr?xima das Zonas Costeiras. A Praia de Ponta Negra, localizada ao Sul da cidade de Natal/RN, ilustra bem o processo praticado pelo homem de ocupa??o das terras por meio da explora??o de recursos naturais, muitas vezes causando altera??es na paisagem mediante o desmatamento, a pr?tica de cortes e aterros para urbaniza??o, especula??o do pre?o da terra e da instala??o de numerosas atividades econ?micas ao longo da praia. A din?mica da ocupa??o de Ponta Negra causou condi??es favor?veis ao crescente processo erosivo que gerou danos f?sicos ao cal?ad?o desta praia. Esta pesquisa tem como objetivo construir uma an?lise integrada da zona costeira da praia de Ponta Negra em Natal/RN. Nesse sentido, o presente estudo ? composto por dois artigos distintos, em que o primeiro se dedica a identificar as modifica??es morfol?gicas da praia de Ponta Negra, no per?odo de 1969 a 2016. Os valores de volume sedimentar do perfil morfol?gico utilizados foram coletados in loco no per?odo de 12 meses (2012/2013). Na identifica??o das fei??es pret?ritas foram consideradas fotografias a?reas obtidas pelo Servi?o A?reo Cruzeiro do Sul, em 1969 e imagens recentes do Google Earth Pro. No processamento das imagens empregou-se t?cnicas de processamento digital de imagens e Sistemas de Informa??es Geogr?fica (SIG). O segundo artigo busca tra?ar um perfil sobre a ocupa??o humana e eventos costeiros na praia de Ponta Negra, tomando como base as not?cias veiculadas no acervo jornal?stico da Tribuna do Norte, no per?odo de 1950 a 2016. Considera-se que o acervo de um jornal pode ser uma fonte informacional que retrata, ainda que parcialmente, um panorama dos importantes eventos ocorridos ao longo do tempo. Isto numa regi?o de uma cidade onde informa??es s?o, muitas vezes, inexistentes. Na constru??o do perfil utilizou-se a t?cnica da an?lise de conte?do, classificando em cinco grandes categorias a an?lise costeira integrada: ocupa??o humana, eventos meteorol?gicos, usos, pol?ticas p?blicas e press?es socioecon?micas. Tamb?m realizou-se a an?lise de correspond?ncia com intuito de associar os anos considerados no estudo das categorias de classifica??o. Adicionalmente, as not?cias classificadas como ?eventos meteorol?gicos? noticiados pelo Jornal foram relacionados qualitativamente ao acumulado de precipita??o conforme os registros da Esta??o Meteorol?gica do Instituto Nacional de Meteorologia, localizada na Universidade Federal do Rio Grande do Norte. O resultado do monitoramento da eros?o no perfil praial e a precipita??o mensal acumulada traz uma correla??o negativa. Quanto aos principais resultados do primeiro artigo, ressalta-se que o processo de avalia??o das fei??es costeiras resultou que em 1969 a mancha urbana representava 16,4% da ?rea de e mais de 60% em 2016. Esse dado corrobora com a hip?tese de que a destrui??o das fei??es de prote??o do ambiente potencializou o processo erosivo. As demais classes apresentaram diminui??o de ?rea, ao contr?rio da mancha urbana. Na classe vegeta??o ocorre diminui??o de 37,2% para 13,6% de cobertura vegetal e esse quadro seria respons?vel pela n?o fixa??o de sedimentos inconsolidados. Os resultados do segundo artigo demonstraram que durante todo o per?odo analisado, houve um aumento no n?mero de not?cias veiculados pelo Jornal. Esse acr?scimo de not?cias sobre a Praia de Ponta Negra ?, inicialmente, notado a partir dos anos 70, momento a partir do qual a praia em tela passa a despontar no notici?rio da m?dia impressa. Percebe-se tamb?m diferen?as nos temas das publica??es ao se compara o primeiro momento do estudo (Anos 50 e 60) e o final do estudo (Anos 2000). no primeiro momento o foco da m?dia era primordialmente quanto ao ?uso e forma de ocupa??o?. Nos anos mais recentes (Anos 2000) o foco passou a evidenciar os ?eventos meteorol?gicos?. Essa mudan?a de foco deve, possivelmente, ter rela??o com o crescimento das discuss?es em torno da mudan?as clim?ticas no mundo, que, com o passar dos anos, tem influenciado fortemente o conte?do jornal?stico. Finalmente, ainda verificou-se eventos erosivos que vieram a destruir partes extensas do cal?ad?o da praia de Ponta Negra. / Man has always sought to install his infrastructure of occupation, defense and survival near the Coastal Zones. Ponta Negra Beach, located in the south of the city of Natal, Rio Grande do Norte, illustrates well the process practiced by the man of land occupation, through the exploitation of natural resources, often causing changes in the landscape with deforestation, the practice of cuts and landfills for urbanization, speculation of the price of land and the installation of numerous economic activities along the beach. The dynamics of the occupation of Ponta Negra caused favorable conditions to the growing erosive process that generated physical damages to the boardwalk of this beach. This research aims to build an integrated analysis of the coastal zone of the beach of Ponta Negra, Natal. In this sense, the present study is composed of two distinct articles, in which the first one is dedicated to identify the morphological changes of the beach of Ponta Negra from 1969 to 2016. The values of sedimentary volume of the morphological profile used were collected locally in the period of 12 months (2012/2013). In the identification of the previous features were considered aerial photographs by the Cruzeiro do Sul Air Service in 1969. In addition, the most recent features were exported from the software Google Earth PRO. We used the technique of remote sensing, digital image processing in Geographic Information System (GIS). The second article seeks to draw a profile on human occupation and coastal events on the beach of Ponta Negra, based on the reports published in the journalistic collection of the Tribuna do Norte from 1950 to 2016. It is considered that the collection from the journal can be an informational source that portray, albeit partially, an overview of the important events that have occurred over time in a region of a city where information is often non-existent. Furthermore, to construct this profile, the content analysis technique was used to classify five categories of integrated coastal analysis: human occupation, meteorological events, uses, public policies and socioeconomic pressures. The correspondence analysis was also performed in order to associate the categories considered in the study. Additionally, the news classified as "meteorological events" reported by the Journal were qualitatively related to the rainfall accumulation observed according to the Meteorological Station records of the National Meteorological Institute located at the Federal University of Rio Grande do Norte. The result of erosion monitoring in the beach profile and the accumulated monthly rainfall has a negative correlation. As for the main results of the first article, it is pointed out that the process of evaluation of the coastal features showedthat in 1969 the urban spot represented 16.4% of the total space cut and in 2016 more than 60%. This asserts the hypothesis that the destruction of environmental protection features has potentiated the erosive process. The other classes showed a decrease of area as opposed to the urban spot. In the vegetation class, there is a decrease from 37.2% to 13.6% and this composition is responsible for the fixation of the unconsolidated sediments. The results of the second article showed that throughout the analyzed period, there was an increase in the number of news stories published by the Journal. This increase in news about Ponta Negra Beach is initially noticed from the 70s, when the beach is always included in the media considered in the study. Differences in the subject of publications are also seen when comparing the first moment of the study (Years 50 and 60) and the end of the study (Years 2000). The initial focus of the media was primarily on "use and form of occupation". In contrast, the focus of the news in the most recent years (Years 2000) have come to highlight the so-called "meteorological events". This change in the focus of the news is possibly related to the increasing importance of discussion on climate change in the world and that over the years has strongly influenced journalistic content.Finally, in addition, there have been erosive events that have destroyed vast parts of the boardwalk from the beach of Ponta Negra.

Made available in DSpace on 2014-12-17T14:02:04Z (GMT). No. of bitstreams: 1 WanessaS.pdf: 455733 bytes, checksum: f1698247e4a0491cd094aa4ffa270c21 (MD5) Previous issue date: 2007-02-12 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / The response of zooplankton assemblages to variations in the water quality of four man-made lakes, caused by eutrophication and siltation, was investigated by means of canonical correspondence analysis. Monte Carlo simulations using the CCA eingenvalues as test statistics revealed that changes in zooplankton species composition along the environmental gradients of trophic state and abiogenic turbidity were highly significant. The species Brachionus calyciflorus, Thermocyclops sp. and Argyrodiaptomus sp. were good indicators of eutrophic conditions while the species Brachionus dolabratus, Keratella tropica and Hexarthra sp. were good indicators of high turbidity due to suspended sediments. The rotifer genus Brachionus was the most species-rich taxon, comprising five species which were associated with different environmental conditions. Therefore, we tested whether this genus alone could potentially be a better biological indicator of these environmental gradients than the entire zooplankton assemblages or any other random set of five species. The ordination results show that the five Brachionus species alone did not explain better the observed pattern of environmental variation than most random sets of five species. Therefore, this genus could not be selected as a target taxon for more intensive environmental monitoring as has been previously suggested by Attayde and Bozelli (1998). Overall, our results show that changes in the water quality of man-made lakes in a tropical semi-arid region have significant effects on the structure of zooplankton assemblages that can potentially affect the functioning of these ecosystems / As respostas das assembl?ias zooplanct?nicas ?s varia??es na qualidade da ?gua de quatro reservat?rios, causadas por eutrofiza??o e assoreamento, foram investigadas por meio de uma an?lise de correspond?ncia can?nica. Simula??es de Monte Carlo utilizando os autovalores da CCA como estat?sticas teste revelaram que as mudan?as na composi??o de esp?cies zooplanct?nicas ao longo dos gradientes ambientais de estado tr?fico e turbidez abiog?nica foram altamente significativas. As esp?cies Brachionus calyciflorus, Thermocyclops sp. e Argyrodiaptomus sp. foram boas indicadoras de condi??es eutr?ficas enquanto que as esp?cies Brachionus dolabratus, Keratella tropica e Hexarthra sp. foram boas indicadoras de elevada turbidez por sedimentos em suspens?o. O g?nero de rot?feros Brachionus foi o mais rico em esp?cies, compreendendo cinco esp?cies que estiveram associadas a diferentes condi??es ambientais. Portanto, n?s testamos se esse g?nero sozinho poderia ser potencialmente um melhor indicador biol?gico desses gradientes ambientais do que toda a assembl?ia zooplanct?nica ou qualquer outro conjunto aleat?rio de cinco esp?cies. Os resultados da ordena??o demonstram que as cinco esp?cies de Brachionus quando sozinhas n?o explicaram melhor os padr?es observados de varia??o ambiental que a maioria dos conjuntos aleat?rios de cinco esp?cies. Portanto, este g?nero n?o pode ser selecionado como um t?xon alvo para um monitoramento ambiental mais intensivo conforme previamente sugerido por Attayde e Bozelli (1998). De um modo geral, nossos resultados mostram que mudan?as na qualidade da ?gua de reservat?rios em uma regi?o semi-?rida tropical t?m efeitos significativos sobre a estrutura das assembl?ias zooplanct?nicas, os quais podem afetar potencialmente o funcionamento desses ecossistemas