Made available in DSpace on 2014-12-17T14:20:17Z (GMT). No. of bitstreams: 1 CarlaMO_TESE.pdf: 3052780 bytes, checksum: 61b44109d20bb01c7481acd5638b88b2 (MD5) Previous issue date: 2010-08-10 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / The debate around the thematic of Corporate Social Responsibility - CSR involves economic, social, cultural and symbolic aspects in the relations established between company and society. In Brazilian reality, the CSR, understood as enterprise actions, external and/or internal, that contributes to social and ambient improvement, gains greater visibility in 1990 decade. Although the significant increase of theoretical productions about CSR pertinent elements, it is still scarce the studies that treats about the relation company/society in the northeastern reality, and singularly, in Rio Grande do Norte. It was in this perspective, that, in being the salt industry one of most important in the potiguar economic history formation , the present work investigated practicies and perceptions of salt entrepreneurship about CSR. Considering all the Rio Grande do Norte salt industry history phases, since the period of the Brazil s settling, as well as the characteristics of the study object, was opted to the qualitative research, objectified in interviews half-structuralized realized with the salt segment entrepreneurs, as well as professionals of ambient management and human resources working in potiguar salt segment. The research main results indicated a coexistence between the mechanisms of management seated on personal and paternalists relations, typical of traditional salt industry, and the emergency of innovative elements typical of the modern management, like the CSR. In this context, a tension between continuity and rupture with the traditional mechanisms of management in salt entrepreneurship actions / O debate em torno da tem?tica da Responsabilidade Social Empresarial RSE envolve aspectos econ?micos, sociais, culturais e simb?licos presentes nas rela??es estabelecidas entre empresa e sociedade. Na especificidade da realidade brasileira, a RSE, compreendida como a??es empresariais, de car?ter externo e/ou interno, que contribuem para os processos de melhoria social e ambiental, ganha maior visibilidade a partir da d?cada de 1990. Apesar do significativo aumento de produ??es te?ricas que tratam dos elementos pertinentes ? RSE, ainda s?o escassos os estudos que tratam da rela??o empresa/sociedade na realidade nordestina e, mais singularmente, no Rio Grande do Norte. Foi nessa perspectiva que, em sendo a ind?stria salineira uma das mais importantes na hist?ria da forma??o econ?mica potiguar, o presente trabalho investigou as percep??es e as pr?ticas do empresariado salineiro acerca da RSE. Considerando todas as fases s?cio-hist?ricas pelas quais passou a ind?stria salineira do Rio Grande do Norte desde o per?odo da coloniza??o do Brasil, bem como as caracter?sticas do objeto de estudo proposto, optou-se pela pesquisa de cunho qualitativo, consubstanciada em entrevistas semi-estruturadas, realizadas junto aos empres?rios do segmento, bem como profissionais de gest?o ambiental e recursos humanos tamb?m vinculados ao ramo salineiro potiguar. Os resultados principais da pesquisa indicaram uma conviv?ncia entre os mecanismos de gest?o assentados sobre rela??es personalistas e paternalistas, t?picas da ind?stria do sal tradicional, e a emerg?ncia de elementos inovadores, caracter?sticos da denominada gest?o modera, dentre eles, a RSE. Configura-se, pois, nesse contexto, uma tens?o entre apego e ruptura diante dos mecanismos tradicionais de gest?o constituintes do fazer empresarial salineiro

Made available in DSpace on 2014-12-17T14:20:26Z (GMT). No. of bitstreams: 1 AndreaMLC_TESE.pdf: 1380890 bytes, checksum: 3f4efa83e3a0883bc8f1380af91de464 (MD5) Previous issue date: 2012-03-23 / This thesis analyzes the political and electoral trajectory of the PFL in Rio Grande do Norte from its beginning in 1985 until his last electoral dispute in 2006, before the process of rebuilding occurred in 2007. The central argument of the thesis is that the PFL occupied side by side with the PMDB the central position in the dynamic of the state partisan politics. This was due to its ability to control the process of disputes for majority positions in the state, especially for Senate vacancies. The hypothesis that support the central argument are related to the trajectory of the formation of the party still under the military regime, where the group that took over the leadership of the party enjoyed privileged conditions for the consolidation of political and electoral power. Another factor associated with their performance was the force that was developed in the second-largest electoral college in the state, Mossor?. To these hypotheses we add the role Jose Agripino Maia who, leading without competitors within the party, concentrated a large power in making decisions in face of adverse contexts to ensure (his) conditions for success in majoritarian disputes / Esta tese analisa a trajet?ria pol?tica e eleitoral do PFL no Rio Grande do Norte de seu surgimento em 1985 at? sua ?ltima disputa eleitoral em 2006, antes do processo de refunda??o ocorrido em 2007. O argumento central defendido ? que o PFL ocupou, ao lado do PMDB, posi??o central na din?mica pol?tico-partid?ria estadual ao longo deste per?odo devido ? sua capacidade de controlar o processo de disputas por cargos majorit?rios no estado, especialmente as vagas para o senado. As hip?teses que d?o sustenta??o ao argumento central est?o relacionadas aos antecedentes da forma??o do partido ainda sob o regime militar, onde o grupo que assumiu a lideran?a do partido desfrutou de condi??es privilegiadas para a consolida??o de seu poder pol?tico e eleitoral. Outro fator associado ao seu desempenho consistiu na for?a que o partido desenvolveu no segundo maior col?gio eleitoral do estado, Mossor?. A essas hip?teses soma-se a atua??o de Jos? Agripino Maia, que liderando sem concorrentes no interior do partido, concentrou amplo poder de tomada de decis?es diante de contextos adversos de forma a assegurar (suas) condi??es de ?xito nas disputas majorit?rias

Made available in DSpace on 2014-12-17T14:34:39Z (GMT). No. of bitstreams: 1 JeffersonTD.pdf: 3262147 bytes, checksum: 9f5f21a07ef0cffc61d811ec367f4616 (MD5) Previous issue date: 2009-12-17 / The period post-war promoted several changes in relations economic, political and social world. Since then, a new division international of labor has delineated, with the great growth of Asian countries. In the field of international relations, the world still appears to transition is not completed because the old institutions were not replaced by new ones and the power of the United States as a major capitalist country remains unshaken, even with the emergence and strengthening of new economic global blocs. With globalization, Brazil emerges with more intensity in the face of new issues global, although its share in transactions trade global hasn‟t changed accordingly. In this sense, the objective of this dissertation is to examine, in a descriptive and critical the development of international relations and trade of Brazil and Rio Grande do Norte with the main blocs in the world from 1999 to 2008. As a secondary objective: to identify the assumptions theoretical that underpinned the decisions governments of the FHC and Lula, in particular, the interference of these terms in international relations and foreign trade. Adopted as the procedure methodological the literature review of the subject, as well as collection and processing of the data of foreign trade. During the Cardoso government has undergone the substantial growth in imports, as part of the economic policy of anti-inflationary, generating large deficits trade. From the first to the second term, with the inflection of exchange rate policy the country has resumed surpluses trade. The choice of government of the autonomy participation increased the relative share of the traditional blocks in total foreign trade and reduced the share of MERCOSUL. In the Lula government, there is the maintenance of some elements of the economic policy of the previous government and the partial shift in the conduct of foreign policy, with the option of autonomy through diversification, raising its stake on the blocks and other emerging countries in total foreign trade Brazilian and reducing the contribution of the traditional blocks such as NAFTA and the European Union. A trend observed in the previous government and deepened in the Lula government was the growth in commodity exports and the decline of manufactured products, confirming the model of conservative insertion of Brazilian exports. The Rio Grande do Norte followed the trend Brazilian in the growth of foreign trade, including in participating conservative, given that the products exported by the state are basically coming from horticulture irrigated and agribusiness. However, in the aspect of destination export, the state followed trajectory distinct from that in the Lula government, with the deepening of trade relations with traditional blocks, especially with the European Union and NAFTA / O per?odo p?s-guerra promoveu in?meras transforma??es nas rela??es econ?micas, pol?ticas e sociais no mundo. Desde ent?o, uma nova divis?o internacional do trabalho vem se desenhando, com o grande crescimento dos pa?ses asi?ticos. No campo das rela??es internacionais, o mundo ainda aparece em transi??o n?o conclu?da, pois as antigas institui??es n?o foram substitu?das por novas e o poder dos Estados Unidos enquanto principal pa?s capitalista se mant?m inabalado, mesmo com o surgimento e fortalecimento de novos blocos econ?micos mundiais. Com a globaliza??o, o Brasil ressurge com mais intensidade diante dos novos temas globais, embora sua parcela nas transa??es comerciais mundiais n?o tenha se alterado na mesma propor??o. Neste sentido, o objetivo principal dessa disserta??o ? analisar, de forma descritiva e cr?tica o desenvolvimento das rela??es internacionais e comerciais do Brasil e do Rio Grande do Norte com os principais blocos econ?micos mundiais no per?odo de 1999 a 2008. Como objetivos secund?rios: identificar os pressupostos te?ricos que alicer?aram as decis?es dos governos FHC e Lula, em especial, na interfer?ncia destas no tocante as rela??es internacionais e do com?rcio exterior. Adotou-se como procedimento metodol?gico a an?lise bibliogr?fica da tem?tica, bem como a coleta e tratamento estat?stico dos dados do com?rcio exterior. Durante o governo FHC o pa?s passou pelo grande crescimento das importa??es, como parte da estrat?gia da pol?tica econ?mica anti-inflacion?ria, gerando grandes d?ficits comerciais. Na passagem do primeiro para o segundo mandato, com a inflex?o da pol?tica cambial o pa?s retomou os super?vits comerciais. A op??o do governo pela autonomia elevou a participa??o relativa dos blocos tradicionais no total do com?rcio exterior e reduziu a participa??o do MERCOSUL. No governo Lula, observa-se a manuten??o de alguns elementos da pol?tica econ?mica do governo anterior e a mudan?a parcial na condu??o da pol?tica externa, com a op??o da autonomia pela diversifica??o, ampliando a participa??o relativa dos demais blocos e pa?ses emergentes no total do com?rcio exterior brasileiro e redu??o da participa??o dos blocos tradicionais, como o NAFTA e a Uni?o Europeia. Uma tend?ncia observada no governo anterior e aprofundada no governo Lula foi o crescimento da exporta??o de produtos b?sicos e a retra??o dos produtos manufaturados, confirmando o modelo de inser??o conservadora da exporta??o brasileira. O Rio Grande do Norte acompanhou a tend?ncia brasileira no crescimento do com?rcio exterior, inclusive na sua inser??o conservadora, dado que os produtos exportados pelo estado s?o basicamente oriundos da fruticultura irrigada e da agroind?stria. Por?m, no aspecto do destino das exporta??es, o estado seguiu trajet?ria distinta do apresentado no governo Lula, com o aprofundamento das rela??es comerciais com os blocos tradicionais, principalmente com a Uni?o Europeia e o NAFTA.

Made available in DSpace on 2014-12-17T14:34:40Z (GMT). No. of bitstreams: 1 AdrianoOFS_DISSERT.pdf: 3482045 bytes, checksum: 03b0892a5dca53a7adafe2a1fdda82ab (MD5) Previous issue date: 2010-12-18 / O trabalho analisa a Ind?stria Petrol?fera em tr?s ambientes de atua??o, mundial, nacional e estadual, a partir da observa??o de sete vari?veis, a saber: car?ter do petr?leo; risco; economia de escala; integra??o; barreiras; tecnologia e ambiente. O estudo busca perceber as intera??es e os transbordamentos das vari?veis selecionadas em cada um dos ambientes citados, em raz?o os aspectos econ?micos e institucionais presentes nesta atividade, cujos resultados atingem diversos setores da economia e da sociedade como um todo e balizam o pr?prio processo de inova??o da mesma. O estudo est? alicer?ado no arcabou?o te?rico neoschumpeteriano acerca dos aspectos voltados para concorr?ncia e inova??o, al?m da quest?o institucional, e se ap?ia em dados da Ag?ncia Nacional do Petr?leo (A.N.P.), Minist?rio de Minas e Energia (MME), Movimento de Combate ? Corrup??o Eleitoral / Tribunal Superior Eleitoral (MCCE/TSE), Organization of the Petroleum Exporting Countries (OPEC), International Energy Agency (IAE), Institut Fran?ais P?trole (IFP), United Nations Development Programme (UNDP). Avalia-se que em termos de caracteriza??o da ind?stria petrol?fera nos tr?s ambientes considerados (mundial, nacional e local), h? certa similitude no que se refere ao comportamento destas vari?veis, com pequenas modifica??es suscitadas por fatores como grau de desenvolvimento e complexidade da atividade; resultado do ambiente concorrencial e inovativo; e, pelas influ?ncias institucionais acerca de atividades e grau de inser??o das mesmas no ambiente socioecon?mico onde est?o localizadas a atividade produtiva e o seu entorno

Made available in DSpace on 2014-12-17T14:34:45Z (GMT). No. of bitstreams: 1 JonilsonSF_DISSERT.pdf: 3703447 bytes, checksum: 91765e0c08059d8842a7eaffc73d1209 (MD5) Previous issue date: 2013-08-21 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / This research objectify to analyze the effects of minimum wage recovery in the household consumption in the Brazil, northeastern region of the Brazil and the state of the Rio Grande do Norte, in the period of 1995 to 2011. This is because the search for the strengthening of the internal market, via incentive policies to private demand has assumed prominence in the Government agenda. Thus, under the justification of the fierce debate about the effectiveness of countercyclical policies of Brazil, in view of the recent economic crisis, aims to: 1) retake the theoretical debate and, to a certain extent, the evolution of the theory of household consumption, as well as some conclusions about their connection with the minimum wage; 2) to describe the experiences and the effects of this legislation in economic history, with emphasis on the Brazilian case; 3) to present some of the available statistics to research bases, with attention to the specifics of each and the empirical results found for consumption in Brazil; 4) to estimate the effects of minimum wage variation in household consumption in Brazil (BR), northeast (NE) and Rio Grande do Norte (RN). From this, in order to quantify this relationship, makes inferences from the effects of the wage bill and the minimum wage on consumption, in quarterly series (with ad hoc adjustment from the "weights" of each quarter), from classic model of multiple linear regression. The hypothesis is that released: increments in income, derived from the policy of minimum wage recovery will influence directly the household consumption. However, when comparing the results between the units analyzed, the expressiveness of the northeastern families of Brazil and Rio Grande do Norte families front national dynamics with income linked to this floor, drives most significant impacts spending decisions in NE and RN, thus reducing regional disparities in the consumer. The results indicate contrary evidence, because while for the BR a unitary variation in minimum wage increases the consumption in units monetary 1.28, to the NE and RN these parameters are respectively 1.05 and 1.09 / A busca do fortalecimento do mercado interno via pol?ticas de incentivo ? demanda, privada tem assumido destaque na agenda governamental, particularmente ap?s a crise de 2008. Neste contexto, a presente pesquisa tem como objetivo analisar os efeitos da valoriza??o do sal?rio m?nimo no consumo das fam?lias brasileiras, nordestinas e potiguares, no per?odo de 1995 a 2011. Sob a justificativa do debate acerca da efetividade das pol?ticas antic?clicas do Brasil, pretende: 1) recuperar o debate te?rico e, em certa medida, a evolu??o da teoria do consumo agregado, bem como algumas ila??es sobre sua liga??o com o sal?rio m?nimo; 2) descrever as experi?ncias e os efeitos desta legisla??o na hist?ria econ?mica, com ?nfase para o caso brasileiro; 3) apresentar algumas das bases estat?sticas dispon?veis ? pesquisa, com aten??o ?s especificidades de cada uma e aos resultados emp?ricos encontrados para o consumo no Brasil; 4) estimar os efeitos da varia??o do sal?rio m?nimo no consumo familiar no Brasil (BR), Nordeste (NE) e Rio Grande do Norte (RN). A partir disso, no sentido de quantificar essa rela??o, realiza infer?ncias dos efeitos da massa salarial e do sal?rio m?nimo no consumo, em s?ries trimestrais (com ajuste ad hoc a partir dos pesos de cada trimestre), via modelo cl?ssico de regress?o linear m?ltipla. A hip?tese lan?ada consiste que: incrementos na renda, derivados da pol?tica de valoriza??o do sal?rio m?nimo influenciar?o diretamente o consumo das fam?lias. Por?m, quando comparados os resultados entre as unidades analisadas, a expressividade das fam?lias nordestinas e potiguares frente ? din?mica nacional com renda vinculada a esse piso, impulsiona impactos mais significativos nas decis?es de gasto no NE e no RN, reduzindo assim as disparidades regionais de consumo. Os resultados apontam evid?ncias contr?rias, pois enquanto para o BR uma varia??o unit?ria no sal?rio m?nimo aumenta o consumo em 1,28 unidades monet?rias, para o NE e RN esses par?metros s?o, respectivamente, 1,05 e 1,09

Made available in DSpace on 2014-12-17T15:55:03Z (GMT). No. of bitstreams: 1 AnaFSRN_DISSERT.pdf: 3363450 bytes, checksum: e0cb6b317ff11cb49abf8a59b8c7c5bc (MD5) Previous issue date: 2013-02-26 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / The use of pesticides is being used intensively with severe consequences for exposed farmers. This study aimed to describe the socioeconomic and health profiles of 60 farmers in the city of Touros / RN through the questionnaire recommended by: (International Commission for Protection against Environmental Mutagens and Carcinogens (ICPEMC). The analysis of these data allowed to prove the importance of knowledge about the socioeconomic and health profile of rural farmers as a way to understand the reality of this population, that is vulnerable to exposure due to the lack of knowledge and conditions. Aiming to analyze the frequency of micronucleus (MN) and other nuclear abnormalities in oral mucosa cells of 54 farmers that work in the city of Touros / RN it was applied the micronucleus test (MN) in oral mucosa. Our results showed an increased frequency of MN and other nuclear abnormalities related to the exposure and effects of pesticides on health. Based on the results, it is clear that farmers are using pesticide in the wrong way and compromising their health. A Cordel has been developed as a method to taking the results to the people affected by the pesticides. Therefore this study alerts to the need for profound changes in the social, cultural and health context to reduce health risks for both people and for the environment / O uso de agrot?xicos esta sendo usado de maneira intensiva com graves consequ?ncias para os agricultores expostos. O presente estudo teve como objetivo descrever os perfis de sa?de e socioecon?mico de 60 agricultores no Munic?pio de Touros/RN atrav?s do question?rio recomendado por: (International Commission for Protection against Environmental Mutagens and Carcinogens (ICPEMC). As an?lises desses dados permitiu comprovar a import?ncia do conhecimento do perfil socioecon?mico e de sa?de de agricultores rurais como forma de entender a realidade dessa popula??o, que pela falta de conhecimentos e condi??es encontram-se vulner?veis a exposi??o de agrot?xicos. Com objetivo de analisar a frequ?ncia de micron?cleos (MN) e outras anormalidade nucleares em c?lulas da mucosa oral de 54 agricultores que trabalham no Munic?pio de Touros/RN aplicou-se o Teste de micron?cleo (MN) em mucosa bucal. Os nossos resultados mostraram uma frequ?ncia aumentada de MN e outras anormalidades nucleares relacionados com a exposi??o e efeitos dos defensivos agr?colas na sa?de. A partir dos resultados obtidos, fica not?rio que os agricultores est?o aplicando os agrot?xicos de maneira err?nea e comprometendo a sua sa?de. Como estrat?gia socioeducativas foi desenvolvido um Cordel baseado no texto e nos resultados encontrados no presente estudo. Desta forma este estudo alerta para a necessidade de profundas mudan?as sociais, culturais e no ?mbito da sa?de para diminuir os riscos a sa?de tanto para as pessoas quanto para o ambiente

Made available in DSpace on 2015-02-24T19:48:45Z (GMT). No. of bitstreams: 1 MariaFAM_TESE_Capa_ate_pag45.pdf: 2486179 bytes, checksum: 1280b90e85a5ab287bf116c2bf019536 (MD5) Previous issue date: 2013-11-25 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / This thesis presents the results of application of SWAN Simulating WAves Nearshore numerical model, OF third generation, which simulates the propagation and dissipation of energy from sea waves, on the north continental shelf at Rio Grande do Norte, to determine the wave climate, calibrate and validate the model, and assess their potential and limitations for the region of interest. After validation of the wave climate, the results were integrated with information from the submarine relief, and plant morphology of beaches and barrier islands systems. On the second phase, the objective was to analyze the evolution of the wave and its interaction with the shallow seabed, from three transverse profiles orientation from N to S, distributed according to the parallel longitudinal, X = 774000-W, 783000-W e 800000-W. Subsequently, it was were extracted the values of directional waves and winds through all the months between november 2010 to november 2012, to analyze the impact of these forces on the movement area, and then understand the behavior of the morphological variations according to temporal year variability. Based on the results of modeling and its integration with correlated data, and planimetric variations of Soledade and Minhoto beach systems and Ponta do Tubar?o and Barra do Fernandes barrier islands systems, it was obtained the following conclusions: SWAN could reproduce and determine the wave climate on the north continental shelf at RN, the results show a similar trend for the measurements of temporal variations of significant height (HS, m) and the mean wave period (Tmed, s); however, the results of parametric statistics were low for the estimates of the maximum values in most of the analyzed periods compared data of PT 1 and PT 2 (measurement points), with alternation of significant wave heights, at times overrated with occasional overlap of swell episodes. By analyzing the spatial distribution of the wave climate and its interaction with the underwater compartmentalization, it was concluded that there is interaction of wave propagation with the seafloor, showing change in significant heights whenever it interacts with the seafloor features (beachrocks, symmetric and asymmetric longitudinal dunes, paleochannel, among others) in the regions of outer, middle and inner shelf. And finally, it is concluded that the study of the stability areas allows identifications of the most unstable regions, confirming that the greatest range of variation indicates greater instability and consequent sensitivity to hydrodynamic processes operating in the coastal region, with positive or negative variation, especially at Ponta do Tubar?o and Barra do Fernandes barrier islands systems, where they are more susceptible to waves impacts, as evidenced in retreat of the shoreline / Esta tese apresenta os resultados da aplica??o do modelo num?rico SWAN Simulating WAves Nearshore, de terceira gera??o, que a simula propaga??o e dissipa??o da energia das ondas do mar, na plataforma continental setentrional do Rio Grande do Norte, com vista a determinar o clima de ondas, calibrar e validar o modelo e aferir suas potencialidades e limita??es para a regi?o de interesse. Ap?s a valida??o do clima de ondas os resultados foram integrados com as informa??es do relevo submarino e morfologia em planta dos sistemas de praias e ilhas barreiras. Nesta segunda fase, o objetivo foi analisar a evolu??o da onda e sua intera??o com o fundo marinho raso a partir de tr?s perfis transversais de orienta??o de N para S, distribu?dos conforme as paralelas longitudinais, X = 774000-W, 783000-W e 800000-W. Posteriormente, extra?ram-se os valores direcionais de ondas e ventos ao longo de todos os meses compreendidos entre novembro de 2010 a novembro de 2012, para analisar a incid?ncia destas for?antes sobre a movimenta??o de ?rea para entender o comportamento das varia??es morfol?gicas de acordo com a variabilidade temporal anual. Com base nos resultados da modelagem e da sua integra??o com os dados correlacionados e das varia??es planim?tricas dos sistemas praiais de Soledade e Minhoto e das ilhas barreiras Ponta do Tubar?o e Barra do Fernandes, obteve-se as seguintes conclus?es: o SWAN conseguiu reproduzir e determinar o clima de ondas para o litoral setentrional do RN, os resultados mostram tend?ncia semelhante com as medidas nas varia??es temporais de altura significativa (HS, m) e per?odo m?dio de onda (Tmed, s), entretanto, os resultados param?tricos das estat?sticas mostraram-se baixos para as estimativas dos valores m?ximos, na maioria dos per?odos analisados em compara??o os dados do PT 01 e PT 02 (pontos de medi??o), com altern?ncia das alturas significativas de ondas, em alguns momentos sobrestimado com a sobreposi??o ocasional de epis?dios de ondula??o. Ao analisar a distribui??o espacial do clima de ondas e sua intera??o com a compartimenta??o submarina, concluiu-se que h? intera??o da propaga??o da onda com o fundo, evidenciando altera??o nas alturas significativas sempre quando esta interage com as fei??es de fundo (rochas praiais, dunas longitudinais sim?tricas e assim?tricas, paleocanal, dentre outros) existentes nas regi?es das zonas da plataforma externa, m?dia e interna. E finalmente notou-se que especialmente as ilhas de Ponta do Tubar?o e Barra do Fernandes, est?o mais sujeitas a incid?ncia das ondas, causando o recuo da linha de costa; o estudo das ?reas de estabilidade permitiu identificar as regi?es mais inst?veis, corroborando com o senso de que a maior amplitude de varia??o indica maior instabilidade e consequente sensibilidade aos processos hidrodin?micos atuantes na regi?o costeira, seja esta varia??o positiva ou negativa

Made available in DSpace on 2015-03-03T14:46:45Z (GMT). No. of bitstreams: 1 CarlosERDA_DISSERT.pdf: 4195226 bytes, checksum: 5ab122e15dffde5c01a2861020cc4eef (MD5) Previous issue date: 2010-02-28 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico / Decapod crustaceans are one of the most important portions of megafaunal of coastal waters, playing a role as modifier of the environment and controlling populations of other organisms. Among the Decapoda, crab (brachyuran) constitutes the dominant macrofauna of mangroves. Among brachyuran is the mangrove crab (Ucides cordatus, Linnaeus, 1763), which represents the main component of the macrofauna of mangroves, particularly in Northern and Northeastern Brazil. In Brazil, its distribution is known from the state of Amap? to the north of Santa Catarina. This species is distinguished by its economic importance, being one of the main fishing resources in Brazil, generating a significant impact on their natural populations. This reduction would result in loss of value to the product, preventing its commercialization. Although it?s great ecological and economic importance, there are few articles about the biological aspects of U. cordatus, mainly in the state of Rio Grande do Norte. This work aimed to study the population dynamics of the mangrove crab, Ucides cordatus (Linnaeus, 1763), in Conchas estuary, Porto do Mangue, northern coast of Rio Grande do Norte. During the period November 2009 to October 2010 the crabs were collected monthly, obeying predetermined lunar periods (new moon or full moon) in a mangrove area in Porto do Mangue - RN. With the aid of a steel caliper (0.01 mm) and a precision balance (0.01 g) were measured biometric variables related to the animal's carapace, major propodus chela, width of abdomen (female), length of gonopodium ( males) and total weight. In addition, it was recorded, the gonads and molt stages, for males and females. In total, 476 crabs were collected, with 338 males and 138 females. Males were larger, heavier and in greater proportion than females. The reproductive period for the species in this location was limited during the months November to May, suggesting a change in current environmental legislation for the closure period. Synchrony was observed between the morphological and physiological maturity with females maturing earlier, possibly, a reproductive strategy adopted, compared to the low fishing pressure in the area. The molting period occurred in the dry season peaking in October. The analysis of growth, based on the parameters of von Bertalanffy was calculated using the nonlinear fit using modes (AJMOD). High growth rates for both males (L = 7.54 cm, k = 0.95, t0 =- 00:08; tmax = 4.84) and females (L = 6.50, k = 1 , 2, t0 =- 0008; tmax = 3.28) were found, contrasting with data from the literature, using other techniques. Males had higher asymptotic width size and longevity, but a lower growth constant when compared with females. The estimated age, for males and females, reaching the minimum capture size was 1.82 years and 1.63 years respectively. The size of physiological maturity, when individuals are able to reproduce, was estimated at 1.4 years and 1.05 years, for males and females, respectively. The recruitment period for this species is seasonal, with two peaks of occurrence, one in the rainy season and one in the dry season. This work represented the first effort on understanding the ecology of the mangrove crab, to the northern coast of Rio Grande do Norte. However, further studies on its biology should be undertaken, especially those related to growth, and recruitment, where observed that literature is more scarce / Os crust?ceos dec?podos constituem uma das parcelas mais importantes da megafauna b?ntica de ?guas costeiras, visto que desempenham papel modificador do ambiente e controlador de popula??es de outros organismos. S?o tanto abundantes como diversos. Entre os Decapodas, os caranguejos (Braqui?ros) constituem a macrofauna predominante dos manguezais. Dentre os braqui?ros, encontra-se o caranguejou?? (Ucides cordatus, Linnaeus, 1763), que representa o principal componente da macrofauna dos manguezais, principalmente nas regi?es norte e nordeste brasileira. No Brasil sua distribui??o ? compreendida desde o estado do Amap? at? o norte de Santa Catarina. Esta esp?cie destaca-se por sua import?ncia econ?mica, sendo um dos principais recursos pesqueiros no Brasil, gerando um expressivo impacto sobre suas popula??es naturais. Esta diminui??o resultaria na perda do valor agregado ao produto, inviabilizando a sua comercializa??o. Embora seja uma esp?cie de grande import?ncia ecol?gica e econ?mica, poucos s?o os artigos que tratam de aspectos biol?gicos de U. cordatus, principalmente no estado do Rio Grande do Norte. O presente trabalho teve por objetivo estudar a din?mica populacional do caranguejo Ucides cordatus (Linnaeus, 1763) no estu?rio do Rio das Conchas, pertencente ao munic?pio de Porto do Mangue, litoral norte do Estado do Rio Grande do Norte. Durante o per?odo de novembro de 2009 a outubro de 2010 foram realizadas coletas mensais de exemplares da esp?cie U. cordatus, sempre sobre os mesmos per?odos lunares estabelecidos previamente (Lua Nova/Lua Cheia) em uma ?rea de manguezal localizada no munic?pio de Porto do Mangue ? RN. Com o aux?lio de um paqu?metro de a?o (0,01mm) e de uma balan?a de precis?o (0,01g) foram medidas vari?veis biom?tricas referentes ? carapa?a do animal, pr?podo da quela maior, largura do abd?men (f?meas), comprimento do gonop?dio (machos) e peso total. Al?m disso, tamb?m foi registrado os est?gios de muda e de g?nadas para machos e f?meas. No total, foram coletados 476 caranguejos, sendo 338 machos e 138 f?meas. Os machos foram maiores, mais pesados e em maior propor??o que as f?meas. O per?odo reprodutivo para a esp?cie nesta localidade foi limitado entre os meses de novembro a maio, sugerindo uma mudan?a na legisla??o ambiental atual para o per?odo de defeso. Foi observada uma sincronia entre a maturidade morfol?gica e fisiol?gica com as f?meas amadurecendo precocemente, possivelmente, uma estrat?gia reprodutiva adotada, frente ? baixa press?o de pesca na ?rea. O per?odo de ocorr?ncia de mudas ocorreu na esta??o seca com pico em outubro. A an?lise de crescimento, baseado nos par?metros de Von Bertalanffy, foi calculada utilizando o ajuste n?o-linear usando-se modas (AJMOD). Evidenciaram-se altas taxas de crescimento tanto para machos (L =7,54cm; k=0,95; t0=-0.08; tm?x=4,84), como para f?meas (L =6,50; k=1,2; t0=-0.008; tm?x=3,28), contrastando com dados obtidos na literatura, utilizando outras t?cnicas. Os machos obtiveram maior tamanho de largura assint?tico e longevidade, por?m uma menor constante de crescimento, quando comparados com as f?meas. A idade estimada para machos e f?meas atingindo o tamanho m?nimo de captura foi de 1,82anos e 1,63anos, respectivamente. O tamanho de maturidade fisiol?gica, quando os indiv?duos est?o aptos a reprodu??o, foi estimado em 1,4anos e 1,05anos para machos e f?meas, respectivamente. O per?odo de recrutamento para a esp?cie ? sazonal, com dois picos de ocorr?ncia, um no per?odo chuvoso e outro no per?odo seco. Este trabalho representou o primeiro esfor?o sobre o entendimento da ecologia do caranguejo-u??, para o litoral norte do Estado do Rio Grande do Norte. No entanto, mais estudos sobre a sua biologia devem ser realizados, sobretudo os referentes ao crescimento, e ao recrutamento, onde se observou que a literatura ? mais escassa

Made available in DSpace on 2015-03-13T17:08:11Z (GMT). No. of bitstreams: 1 ClaudeLAS.pdf: 1893577 bytes, checksum: 8697cd2a9e867354712c23c4d0428432 (MD5) Previous issue date: 2006-03-30 / Studies on the Brazilian continental shelf were developed between Touros and Macau-RN (NE Brazil) with the aim to mapping carbonate buildups, and especially, reef ecosystems. Remote sensing, submarine movies, bathymetric survey and diving were the methods used. This paper will focus on three main aspects of the Rio Grande do Norte reefs: 1) characterization of the coral fauna; 2) the classification and, 3) the distribution of the main northriograndense carbonate buildups. Reefs environments are found predominantly on the inner shelf adjacent to Touros, at depths shallower than 10 m. These reefs generally show NW-SE orientation parallel to the coastline and constitute groupings of knolls and patch reefs. A prominent carbonate buildup, where the corals are almost absents and algae incrustation is thin, occurs in average depths of 25 m, along the northern part of Rio Grande do Norte State and is classified as sandstone bank. Others sandstone banks, with smaller lengths and heights were mapped around 10 m depth. They should be related to an ancient coastline; however the corresponding litostratigraphic unit was not defined. This work is a contribution to the mapping of coral reef, in particular, and carbonate buildups, in general, on the Rio Grande do Norte coast / Estudos na plataforma continental brasileira entre Touros e Macau-RN (NE do Brasil) foram realizados com o objetivo de mapear constru??es carbon?ticas, inorg?nicas e recifais, utilizando t?cnicas de sensoriamento remoto, filmagem submarina, levantamento batim?trico e mergulho in situ. Tr?s aspectos s?o abordados: caracteriza??o da fauna de corais; 2) classifica??o e 3) distribui??o das principais constru??es carbon?ticas desta costa norte riograndense. Os resultados obtidos mostram que os ambientes recifais ocorrem predominantemente na plataforma interna da regi?o de Touros (recifes de Sioba, Ca??o, Rio do Fogo e Maracaja?), litoral oriental. Estes recifes se aglomeram em conjuntos de c?moros (knoll) e canteiros (patch) e essas aglomera??es tomam geralmente orienta??o NW-SE, paralelos ? linha de costa. Constru??es carbon?ticas inorg?nicas, onde a presen?a de corais ? inexpressiva, ocorrem a uma profundidade m?dia de 25 m (entre as isob?tas de 20 e 30 m), ao longo de toda a ?rea estudada, sendo classificados como bancos aren?ticos. Outras constru??es inorg?nicas, embora de menor extens?o e menor altura, foram mapeadas a profundidades em torno de 10 m. Podem ser relacionadas a uma linha de costa pret?rita. Entretanto, a unidade litoestratigr?fica correspondente esses bancos n?o foi definida. O mapeamento das constru??es carbon?ticas (e em especial dos recifes) desenvolvido neste trabalho se constitui em uma contribui??o ao levantamento de dados sobre ocorr?ncia de corais na costa do Rio Grande do Norte

Made available in DSpace on 2015-03-13T17:08:15Z (GMT). No. of bitstreams: 1 MarciaGS_ ate_Cap4.pdf: 2549651 bytes, checksum: 6eb717ac0ed84f3e72d899abd57a073f (MD5) Previous issue date: 1999-08-24 / Petr?leo Brasileiro SA - PETROBRAS / This dissertation deals with the characterization, distribution and provenience of heavy minerals along the Piranhas-A?u River, from the City of Parelhas (Serid? River) to your mouth at the City of Macau-RN. Many heavy minerals species were recorded in this study: clinoamphibole, epidote (including zoisite), garnet, sillimanite, tourmaline, staurolite, andalusite, zircon, rutile, augite, ilmenite, hematite and magnetite. Major transparent minerals, those forming more than 5% of some assemblages, are hornblende, epidote, tourmaline, staurolite and zircon. Predominant opaque mineral is ilmenite. Six assemblages were identified along the river: (i) Garnet-hornblende-tourmaline with sillimanite, when cutting rocks of the Serid? Formation; (ii) Hornblende-garnet-zircon, when crossing rocks of the Caic? gnaisse-migmatitic Complex; (iii) Hornblende-zircon-epidote-staurolite, when draining rocks of the Jucurutu Formation; (iv) Hornblende-zircon-epidote, when cutting rocks of the A?u Formation; (v) Hornblende-zircon-staurolite, on the lowermost A?u River, when crossing limestones of the Janda?ra Formation and (vi) Zircon-tourmaline-staurolite in the A?u River mouth (Cenozoic rocks) where coastal process dominate. Mineral ratios that reflect differences in grain shape, density, and selective chemical decomposition were used in an attempt to isolate the effects of source and process as controls of mineral variability. Reworking of the sediments was regionally effective in selective sorting; the more equant minerals (e.g. epidote) and heavier minerals (e.g. opaques) had a higher probability of being selected for permanent deposition during reworking. The processes of selective decomposition stand out at the river mouth. A priori knowledge of provenance, associated with the assemblage distribution and effects of process were utilized to the interpretations, that points to the follow provenances: hornblende comes from micashists of the Serid? Formation, orthognaisses and amphibolites of the Caico Complex, paragnaisses and paranphibolites of the Jucurutu Formation and granites intrusions; epidote comes from paragnaisses and calciosilicatics of the Jucurutu Formation, granites intrusions (?-Npy3al/ca and ?-Npy3mz, gravels deposits and A?u Formation; Andalusite and staurolite come from the Serid? Formation; Sillimanite, tourmaline and garnet come from micashists of the Serid? Formation, as well as from quartzites of the Equador Formation; Zircon comes from Precambrian rocks (pink and prismatic zircon) and from sediments of several cycles (round zircon); Opaques come from all rocks cutted for the Piranhas-A?u River; Rutile comes from metamorphic rocks, in general; Augite comes from the Cear?-Mirim, Serra do Cu? and Macau volcanisms. The texture of gravels deposits reveals a sediment transport mechanisms by traction-current processes, together with a diagenetic clay matrix suggests a hot-humid environments for deposition. The presence of unstable heavy minerals assemblages, as well as pebbles of different composition and degrees of rounding and esfericity, indicate more than one source. The occurrence of calcio/alkaline granites suites, in areas closed to the gravel deposits, suggests that these intrusions are the main source of sediments. This could explain for instance, the significant amounts of epidote and presence of unstable heavy minerals (e.g. hornblende). The analyses of heavy minerals also show significante variability between the modern (Piranhas-A?u) and ancestral (A?u Formation) river sediments. In general, these variations reflect relatively higher unstable and lower stable heavy minerals contents of the modern Piranhas-A?u sediments. The absence of significant compositional differences probably reflects uniform weathering conditions / This dissertation deals with the characterization, distribution and provenience of heavy minerals along the Piranhas-A?u River, from the City of Parelhas (Serid? River) to your mouth at the City of Macau-RN. Many heavy minerals species were recorded in this study: clinoamphibole, epidote (including zoisite), garnet, sillimanite, tourmaline, staurolite, andalusite, zircon, rutile, augite, ilmenite, hematite and magnetite. Major transparent minerals, those forming more than 5% of some assemblages, are hornblende, epidote, tourmaline, staurolite and zircon. Predominant opaque mineral is ilmenite. Six assemblages were identified along the river: (i) Garnet-hornblende-tourmaline with sillimanite, when cutting rocks of the Serid? Formation; (ii) Hornblende-garnet-zircon, when crossing rocks of the Caic? gnaisse-migmatitic Complex; (iii) Hornblende-zircon-epidote-staurolite, when draining rocks of the Jucurutu Formation; (iv) Hornblende-zircon-epidote, when cutting rocks of the A?u Formation; (v) Hornblende-zircon-staurolite, on the lowermost A?u River, when crossing limestones of the Janda?ra Formation and (vi) Zircon-tourmaline-staurolite in the A?u River mouth (Cenozoic rocks) where coastal process dominate. Mineral ratios that reflect differences in grain shape, density, and selective chemical decomposition were used in an attempt to isolate the effects of source and process as controls of mineral variability. Reworking of the sediments was regionally effective in selective sorting; the more equant minerals (e.g. epidote) and heavier minerals (e.g. opaques) had a higher probability of being selected for permanent deposition during reworking. The processes of selective decomposition stand out at the river mouth. A priori knowledge of provenance, associated with the assemblage distribution and effects of process were utilized to the interpretations, that points to the follow provenances: hornblende comes from micashists of the Serid? Formation, orthognaisses and amphibolites of the Caico Complex, paragnaisses and paranphibolites of the Jucurutu Formation and granites intrusions; epidote comes from paragnaisses and calciosilicatics of the Jucurutu Formation, granites intrusions (?-Npy3al/ca and ?-Npy3mz, gravels deposits and A?u Formation; Andalusite and staurolite come from the Serid? Formation; Sillimanite, tourmaline and garnet come from micashists of the Serid? Formation, as well as from quartzites of the Equador Formation; Zircon comes from Precambrian rocks (pink and prismatic zircon) and from sediments of several cycles (round zircon); Opaques come from all rocks cutted for the Piranhas-A?u River; Rutile comes from metamorphic rocks, in general; Augite comes from the Cear?-Mirim, Serra do Cu? and Macau volcanisms. The texture of gravels deposits reveals a sediment transport mechanisms by traction-current processes, together with a diagenetic clay matrix suggests a hot-humid environments for deposition. The presence of unstable heavy minerals assemblages, as well as pebbles of different composition and degrees of rounding and esfericity, indicate more than one source. The occurrence of calcio/alkaline granites suites, in areas closed to the gravel deposits, suggests that these intrusions are the main source of sediments. This could explain for instance, the significant amounts of epidote and presence of unstable heavy minerals (e.g. hornblende). The analyses of heavy minerals also show significante variability between the modern (Piranhas-A?u) and ancestral (A?u Formation) river sediments. In general, these variations reflect relatively higher unstable and lower stable heavy minerals contents of the modern Piranhas-A?u sediments. The absence of significant compositional differences probably reflects uniform weathering conditions