Made available in DSpace on 2014-12-17T14:34:41Z (GMT). No. of bitstreams: 1 EstevaniPO_DISSERT.pdf: 1554547 bytes, checksum: 9e51e66979a260b54372a998e0aaae83 (MD5) Previous issue date: 2011-11-17 / This study discuss the issue on Clusters Global, the productive arrangement of fruits melon Mossor?/Bara?na in Rio Grande do Norte, located in the Potiguar semi-arid RN, is entered in the arket international level, the job serch, from the benchmark neo-schumpeterian, strongly condensed and absorbed in Brazil by focusing on Local Productive Arrangements set out by the Reseatch Netwoark on Sistemas Produtivos e Inovativos Locais (REDESIST), understanding the extent to which innovation efforts, and as interactions between the main actors that make up this APL in particular, account for its global insertion. The methodology includes the application of questions to the producers of melon arrangement as well as interviews with the main responsible for the support, promotion and financing. In conclusion, there is a significant interaction between producres and actors of the arrangement, a fact that contributes to the integration into the international market together with the implementation of relevant innovations. Finally, it is pointed out the need for public policies directed to the production of melon because of its relevance to the exports of Rio Grande do Norte / Este estudo discute a tem?tica Arranjos Produtivos Globalizados, precisamente o arranjo produtivo de fruticultura de mel?o de Mossor?/Bara?na, no Rio Grande do Norte que, a despeito de ser de base agr?cola e localizado no semi-?rido potiguar, se inseriu no mercado internacional. O presente trabalho busca, a partir do referencial neo-schumpeteriano, fortemente condensado e assimilado no Brasil por meio do enfoque em Arranjos Produtivos Locais enunciado pela Rede de Pesquisa em Sistemas Produtivos e Inovativos Locais (REDESIST), compreender em que medida os esfor?os de inova??o, bem como as intera??es entre os principais atores que comp?em este APL em espec?fico, respondem por sua inser??o global. A metodologia inclui a aplica??o de question?rios junto aos produtores de mel?o do arranjo, bem como entrevistas com os principais respons?veis pelo apoio, promo??o e financiamento. Como conclus?o, verifica-se uma significativa intera??o entre os produtores e os atores do arranjo, fato este que contribui para a sua inser??o no mercado internacional acompanhada da implementa??o de inova??es relevantes. Por fim, aponta-se para a necessidade pol?ticas p?blicas direcionadas para a produ??o de mel?o, em raz?o de sua relev?ncia para a pauta de exporta??es do Rio Grande do Norte

De ekologiskt betydelsefulla småbiotoperna blir allt färre i det moderna jordbruket på grund av intensifieringen av jordbrukslandskapet som resulterat i ett allt mer fragmenterat landskap. För att kunna ge småbiotoper, såsom åkerholmar, ett optimalt skydd behövs flera studier om organismerna på holmarna, deras diversitet och spridning. I denna undersökning studeras artrikedomen av mossor och lavar på busk- och trädbekädda samt öppna åkerholmar i ett öppet- och ett skogsdominerat landskap. Analysen av artrikedom i studien tyder på att de finns fler arter av mossor och lavar i det öppna landskapet i förhållande till det skogsdominerade landskapet samt på de åkerholmarna som saknade busk- och trädvegetation. Dessa miljöer består av torr och stenig mark och växer igen relativt långsamt, vilket är gynnsamt för vissa mossor och lavar. Det fanns ingen signifikant korrelation mellan diversitet och storleken på åkerholmarna eller mellan diversitet och holmarnas avstånd till skog. Antalet arter i ett habitat kan bero på regionala artpoolen samt antalet potentiella kolonisatörer men även lokala processer. Vidare är det viktigt att nämna att studien tyder på att diversitet av mossor och lavar påverkas av förhållandena på holmarna, såsom busk- och trädtäckningen. Detta i kombination med en variation inom dessa små biotoper kan skapa goda förutsättningar för ett landskap med hög diversitet. / The ecologically important small remnant habitats are becoming fewer in modern agriculture due to the intensification of agricultural landscapes that have resulted in an increasingly fragmented landscape. In order to provide an ideal conservation framework for small habitats, such as midfield islets, several studies about the organisms on the islets, their diversity and distribution are needed. In this study I investigated the diversity of mosses and lichens on open midfield islets with and without shrubs and trees in an open and a forest-dominated landscape. The analysis of species diversity in the study suggests that, overall; there are more species of mosses and lichens in the open landscape in relation to the forest-dominated landscape, and on the opened islets lacking shrub and tree vegetation. These environments consist of dry and rocky soils and overgrow relatively slowly, which is favourable for mosses and lichens. There was no significant correlation between diversity and size of the midfield islets or their distance to forest. The number of species in a habitat may depend on regional species pool and the number of potential colonizers but also local processes. Furthermore, it is important to mention that the study suggests that the diversity of mosses and lichens is influenced by the conditions on the midfield islands, such as shrub and tree cover. These conditions, combined with a variation within these small habitats can create good conditions for a landscape with high diversity.

Made available in DSpace on 2014-12-17T15:25:23Z (GMT). No. of bitstreams: 1 AlessandroTN.pdf: 250336 bytes, checksum: 9e16d53c748697df7804720354e7a3e9 (MD5) Previous issue date: 2007-03-26 / This research comprises a study on the values and ideals attributed to Dix-sept Rosado, by the Cole??o Mossoroense journal. Local researchers demonstrate how the Cole??o Mossoroense constructs an image of Mossor?, forming in the members of the city an identity with the place, a social cohesion or creating one forms to see and to say about the Mossor? city. The Cole??o Mossoroense, through Vingt-un Rosado together with its family, established a form of seeing and identifying of the Mossor? s population with the city, just because it associated and it was, at the same time, a movement at the same time social (civic parties for example), political (the domination of the Rosado s family) and cultural (the books and theatrical parties about the city). The conjunction of the Cole??o Mossoroense as and with a social movement, cultural and political was capable to establish a social identity, a subjective constituent . With this background, it was possible to make a study of the image attributed to Dix-sept Rosado, by the Cole??o Mossoroense, through an analysis of the inherent discourse in the works by Bakhtin (1989) and Bourdieu (2000), of and on Dix-sept Rosado in the Cole??o Mossoroense based on. The image of Dix-sept Rosado was constructed by the Cole??o Mossoroense after its death, and the responsible for this was Vingt-un Rosado, which was the chief-editor of the Cole??o Mossoroense up to 2006, year of its death. The Cole??o Mossoroense built an image of Dix-sept Rosado as an enterprising man, progressive and innovator, of great capacity of leadership and oratory (a conductor of the crowds ), popular and charismatic, an honest and dynamic politician. This image made by the Cole??o Mossoroense, although when enhancing in surplus the qualities of Dix-sept Rosado have as objective to transmit an image of a heroic personage, it has some relation with the reality. Dix-sept Rosado was a man identified with its locality. This can resemble a regional nationalism. The attitudes of Dix-sept Rosado must be understood inside of a broader social context, of a time marked by the populist politics. Qualities also appreciated and developed inside of a specific historical context and determined both national and locally. The Cole??o Mossoroense enhances the qualities of Dix-sept Rosado so that the current politicians of the Rosado s family can establish a link of continuity in its contemporary political practice / Essa pesquisa compreende um estudo sobre os valores e ideais atribu?dos a Dix-sept Rosado pela Cole??o Mossoroense. Pesquisadores locais demonstram como a Cole??o Mossoroense constr?i uma imagem de Mossor?, formando nos membros da cidade uma identidade com o lugar, uma coes?o social ou criando uma forma de ver e dizer da cidade de Mossor?. A Cole??o Mossoroense, atrav?s de Vingt-un Rosado juntamente com sua fam?lia, s? conseguiu estabelecer uma forma da popula??o mossoroense de se ver e de se identificar com a cidade porque associou e foi, ao mesmo tempo, um movimento social (festas c?vicas por exemplo), pol?tico (a domina??o da fam?lia) e cultural (os livros e as pe?as teatrais sobre a cidade). A conjun??o da Cole??o Mossoroense como e com um movimento social, pol?tico e cultural foi capaz de estabelecer uma identidade social, um constituinte subjetivo . Com esse conhecimento b?sico, p?de-se partir para o estudo da imagem que a Cole??o Mossoroense atribui a Dix-sept Rosado, realizando-se uma an?lise do discurso das obras de e sobre Dix-sept Rosado na Cole??o Mossoroense fundamentado em Bakhtin (1989) e Bourdieu (2000). A imagem de Dix-Sept Rosado foi constru?da pela Cole??o Mossoroense depois de sua morte e seu respons?vel foi Vingt-un Rosado, que ficou na dire??o da Cole??o Mossoroense at? 2006, ano de seu falecimento. A Cole??o Mossoroense construiu uma imagem de Dix-sept Rosado enquanto um homem empreendedor, progressista e inovador, de grande capacidade de lideran?a e orat?ria (um condutor de multid?es ), popular e carism?tico, um pol?tico honesto e din?mico. Essa imagem constru?da pela Cole??o Mossoroense, apesar de ao real?ar em demasia as qualidades de Dix-sept Rosado tem como objetivo transmitir uma imagem de um personagem her?ico, tem alguma rela??o com a realidade. Dix-sept Rosado foi um homem identificado com a sua localidade. Isso pode ensejar um nacionalismo regional, um certo bairrismo. As atitudes de Dix-sept Rosado devem ser compreendidas dentro do contexto social mais amplo, de uma ?poca marcada pela pol?tica populista. Qualidades inclusive, apreciadas e desenvolvidas dentro de um contexto hist?rico especifico e determinado nacional e localmente. A Cole??o Mossoroense real?a as qualidades de Dix-sept Rosado para que os pol?ticos atuais da fam?lia Rosado possam estabelecer um elo de continuidade em suas pr?ticas pol?ticas contempor?neas

Clear-cut logging is the most widely practised forestry method in Sweden. This often conflicts with nature conservation and leads to issues where economic interests are pitted against ecological values. Bryophytes are a group of organisms commonly used as indicators of change in the environment, and several species of this group are also used as tools for assessing conservation values in the habitats they occur in. These are termed indicator or signal species, as they demand certain prerequisites regarding for example climate or substrate that are characteristic for the specific habitat type. In this thesis, the effects of clear-cut logging on five Red-Listed bryophyte species specialised in old-growth forests were tested, to see if they can survive such an intervention. This was done in ArcGIS, by overlaying layers containing 13 years of species observations from Artportalen.se and spatio-temporally matched clear-cut areas from the Swedish Forest Agency. There were 229 logged areas containing a total of 401 observations of the selected bryophyte species, of which 25 were found post-logging. Additionally, 64 % of the post-logged findings were located within a 10 m buffer strip along the edge of the logged areas. The results provide strong evidence that clear-cut logging does impact these species negatively. At the same time the data suggest that developing adequate mitigation measures, for example retention patches along the edges, and evaluating those already in use, can help these species to some extent, by mitigating the negative impact. This is the most important implication from this study, because forestry will continue to be a necessary contribution to the ongoing transition towards a fossil free society. Therefore, the practice needs to shift towards a more biodiversity-friendly management, where alternative forestry methods that are less destructive, are promoted and used to a wider extent. Furthermore, the weight of these species as indicators of high conservation value for the habitats they grow in requires special caution when planning for logging such areas. Otherwise, there is risk of losing species to regional extinction, with specialist species like the ones in this study being of greatest concern. / Den vanligast förekommande skogsbruksmetoden i Sverige är idag trakthyggesbruket. Denna metod är inte alltid kompatibel med naturvårdsintressen och leder ofta till konflikter mellan ekonomiska och ekologiska värden. En organismgrupp som ofta används som indikatorer på förändringar i naturmiljön är mossor. Flertalet mossarter är dessutom så kallade signalarter, vilket betyder att de kan användas som ett mått på naturvärden i den biotop de förekommer i, då de har artspecifika krav på särskilda förutsättningar, som till exempel klimat och substrat. I den här studien testades därför hur slutavverkning påverkar fem Rödlistade mossarter strikt knutna till äldre kontinuitetsskogar. Syftet var att undersöka om de överhuvudtaget kan överleva ett sådant ingrepp. Detta utfördes genom att analysera rumsligt matchade geodatalager i ArcGIS, innehållande 13 års artobservationer från Artportalen.se samt utförda avverkningar från Skogsstyrelsen. Det fanns 229 avverkade områden med totalt 401 artobservationer, varav 25 var funna efter utförd avverkning. Av dessa 25 fynd var 64 % observerade inom en 10 m bred buffertzon utmed det avverkade områdets kant. Resultaten visar tydligt att slutavverkning påverkar dessa arter negativt, men pekar samtidigt på att utvecklingen av lämpliga metoder för naturvårdshänsyn (till exempel hänsynsytor längs med avverkningsområdenas kantzoner) och utvärdering av de metoder som redan används kan mildra problemet. Detta är därmed den viktigaste slutsatsen från denna studie, då skogsnäringen även fortsättningsvis kommer att vara ett viktigt bidrag till den pågående gröna omställningen och det är därför nödvändigt att främja även andra, mindre destruktiva, skogsbruksmetoder för att bibehålla och stärka ekologiska värden, som biodiversitet. Dessutom bör de här arternas värde som signalarter väga tungt vid planering av avverkning i dessa områden, då de ju visar att habitaten har höga naturvårdsvärden. Annars är det risk att vissa arter dör ut, i synnerhet sådana arter som är specialiserade på de miljöer som är mål för exploatering.

Syftet med denna litteraturstudie är att ge en bild av det svenska skogsbruket och dess påverkan på den biologiska mångfalden. Idag är det trakthyggesbruket som mest påverkar den biologiska mångfalden i Sverige och har lett till att många skogslevande arter idag är hotade och rödlistade. I denna studie har vi tittat på hur en produktionsskog skiljer sig från en naturskog när det gäller trädsammansättning, förekomst av död ved, fragmentering, skogskontinuitet och störning i form av brand. Vi har tittat på hur organismgrupperna svampar, lavar, mossor, kärlväxter, insekter, fåglar och däggdjur påverkas av skogsbruket. I denna studie ger vi även ett förslag på hur lärare, genom en exkursion, kan lära ut om biologisk mångfald i skolan.

In the 1850s when the timber floating began in Sweden many streams were channelized, which meant that the streams were straightened out, side channels were closed, and stones, trees and boulders were moved out to the banks of the streams. These measures altered the morphology of the streams, causing impediments to water moving in from the stream to the riparian zone, and reduced flooding frequency. When the era of timber floating was over humans began to restore the channelized streams to restore the damaged systems, mainly to improve fish habitats. Channelization and restoration involve major disruptions to the stream ecosystem, and the purpose of this study was to investigate how the bryophyte communities in the riparian zone differed in diversity, species richness and areal coverage, depending on the form of disturbance they were exposed to and the time passed since the disturbance occurred. This study was conducted along tributaries to the Vindel River in northern Sweden. There were three types of tributaries: partly channelized streams, best-practice restored streams and demonstration restored streams. At all tributaries included in the study, bryophyte samples were collected at two heights from the water surface, 0 and 40 cm. These samples were then identified to family or species level and their areal coverage was estimated. The results show that the demonstration restored streams had the lowest species richness and, there were no significant differences in diversity and species richness between the channelized streams and the best-practice restored streams. Regarding areal coverage, there was no significant difference between the stream types. The results also show that the time plays an important role for recovery of the bryophyte communities since diversity and species richness increased with the time since the disturbance occurred. / Under 1850-talet då flottning av timmer påbörjades i Sverige startade kanaliseringen av många vattendrag, vilket innebar att vattendragen rätades ut, sidokanaler stängdes, och stenar, träd och stenblock flyttades ut till vattendragens kanter. Dessa åtgärder förändrade vattendragens morfologi, orsakade fördämningar mellan vatten och strandzon och minskade översvämningsfrekvensen. När timmerflottningens era var slut började människan restaurera de kanaliserade vattendragen, främst för att det visat sig att fisket försämrats. Kanalisering och restaurering innebär stora störningar för ekosystemet de utförs i och denna studie syftar till att titta hur mossamhällen i strandzonen skiljer sig åt i diversitet, artrikedom och täckning beroende på vilken form av störning de utsatts för och tiden sedan de utsattes för störningen. Studien är gjord längs biflöden till Vindelälven i norra Sverige. Biflödena är dels kanaliserade vattendrag, bästa-praxis restaurerade vattendrag och demonstrationsåtgärdade vattendrag. Vid samtliga sträckor som ingår i studien har mossprover samlats in på två höjder från vattenytan, 0 och 40 centimeter. Dessa prover har sedan identifierats till lägsta möjliga taxonomiska nivå (art eller familj), och deras täckningsgrad har uppskattats. Resultaten visade att de demonstrationsåtgärdade vattendragen hade lägst artrikedom och diversitet och mellan kanaliserade vattendrag och bästa-praxis vattendrag kunde ingen signifikant skillnad i diversitet eller artrikedom påvisas.  Gällande täckningsgraden fanns ingen signifikant skillnad mellan vattendragstyperna. Resultatet visade också att tiden spelar en viktig roll för återhämtningen hos mossamhällena då artrikedom och diversitet ökar med tiden sedan inträffad störning.

Made available in DSpace on 2014-12-17T14:20:17Z (GMT). No. of bitstreams: 1 MelissaRCP_DISSERT.pdf: 2163364 bytes, checksum: 30b1df670dbf728c0cbd50db2ab2029f (MD5) Previous issue date: 2014-02-26 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / The subject of public safety is part of the academic and popular discussions, due to several factors that act in society culminating in an increasing criminality. The importance of the evaluation of public policies in this context consists in a possible control tool, monitoring and necessary adjustments to the government to make the necessary changes. Given this reality, it is thought the research problem: how Mossor? (RN) city has implemented his public security policy? In general guideline of the research, we work with the following hypothesis: the own formulation of the National Policy of Public Safety there are elements that hinder the implementation of a public policy of municipal security in Mossor?. The objective of this research is to evaluate the existing security public policy in the city of Mossor?, by the elements that facilitate and/or hamper its implementation, through the actions of municipal government in the activities of the Mossoro Civil Guard (GCM). For this, a review of the implementation process was conducted, specifically its subprocesses of selection, training, and logistical or operational. Was used bibliographical research, documental primary and secondary, and field research, with conducting of interviews. It was found that with a staff of 197 guards, and with five years of creation, the actions developed by this institution refer to an early implementation of the municipal security policy. The guard has the basic pattern selection, part of function relocation and part of public tender. The formation occurs in an introductory way, however, not complete and specific, for the function performance. Its operability is limited by the number of existing effective and by the physical structure that has not matching the demand yet, which touches on the municipal budgetary reality of direct resource intended to safety. It was found the absence of a municipal plan of public security with principles, guidelines and goals that could direct the actions of the guard. It is concluded that despite of the implementation of the GCM Mossor? have not achieved, within the parameters of efficiency, efficacy and effectiveness have played their actions, projects and programs, it could trigger a process of opening for construction of a municipal security policy. As well as break with the paradigm of municipal actions just meant for surveillance of public property, interaction affirmative for the prevention of violence and crime / A tem?tica da seguran?a p?blica faz parte das discuss?es acad?micas e populares devido a v?rios fatores que atuam na sociedade e que culminam em um aumento crescente da criminalidade. A relev?ncia da avalia??o de pol?ticas p?blicas nesse contexto constitui-se em uma poss?vel ferramenta de controle, monitoramento e ajustes necess?rios ao poder p?blico para que realize as mudan?as necess?rias. Diante dessa realidade, tem-se como problema da pesquisa: como o munic?pio de Mossor? (RN) vem implementando sua pol?tica p?blica de seguran?a? Na diretriz geral da pesquisa, trabalhamos com a seguinte hip?tese: na pr?pria formula??o da Pol?tica Nacional de Seguran?a P?blica existem elementos que dificultam a implementa??o de uma pol?tica p?blica de seguran?a municipal em Mossor?. O objetivo dessa pesquisa ? avaliar a pol?tica p?blica de seguran?a existente no munic?pio de Mossor? pelos elementos que facilitam e/ou dificultam sua implementa??o, atrav?s das a??es do poder p?blico municipal nas atividades da Guarda Civil de Mossor? (GCM). Para isso, foi realizada uma avalia??o de processo de implementa??o, especificamente dos seus subprocessos de sele??o, capacita??o e log?sticos ou operacionais. Utilizou-se pesquisa bibliogr?fica, documental, prim?ria e secund?ria; e de campo, com a realiza??o de entrevistas. Constatou-se que com um efetivo de 197 guardas, e com cinco anos de cria??o, as a??es desenvolvidas por esta institui??o remetem a um in?cio da implanta??o da pol?tica de seguran?a municipal. A guarda possui o padr?o b?sico de sele??o; parte de remanejamento de fun??o e parte de concurso p?blico. A forma??o acontece de forma introdut?ria, no entanto, n?o se d? de forma completa e espec?fica para a atua??o na fun??o. Sua operacionalidade se limita pelo n?mero de efetivo existente e pela estrutura??o f?sica que ainda n?o correspondente ? demanda, que esbarra na realidade or?ament?ria municipal de recurso direto destinado para a ?rea da seguran?a. Verificou-se a falta de um Plano Municipal de Seguran?a P?blica com princ?pios, diretrizes e metas que possa direcionar as a??es da guarda. Conclui-se que apesar da implementa??o da GCM de Mossor? n?o ter conseguido, dentro dos par?metros de efici?ncia, efic?cia e efetividade, desempenhar suas a??es, projetos e programas, ela conseguiu desencadear um processo de abertura para constru??o de uma pol?tica de seguran?a municipal, assim como a quebra do paradigma de a??es municipais voltadas apenas para a vigil?ncia do patrim?nio p?blico, com a intera??o de afirmativas para a preven??o da viol?ncia e criminalidade

Made available in DSpace on 2015-03-13T17:10:48Z (GMT). No. of bitstreams: 1 Romero RTS_DISSERT.pdf: 2393958 bytes, checksum: 2d568d51e26afdedacf433de6a4e99ee (MD5) Previous issue date: 2012-12-14 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / This study was based on the analysis and understanding of the dynamics of the lower circuit of the economy and the size of the street trading in the city of Mossoro (RN). The operationalization of the theory of the two circuits of the urban economy, based on Santos (2008a) was essential to understand the street trading as part of the entire city of Mossoro. It was given emphasis on the study of the lower circuit of the economy and its coverage in the street trading in the commercial center of the city, specifically in street trading in Coronel Gurgel. The dynamics of that street reveals the different ways that the territory is used simultaneously by different social actors as pedestrians, consumers, business owners, and especially by street vendors. These vendors occupy the spaces along the streets of the city commercial center, placing their tents or stalls, especially on sidewalks, excellent strategic locations for the marketing of their products, due to the large influx of people seeking goods and services nearby. As methodological and technical procedures for gathering primary data, we opted for the use of questionnaires and interviews, with many users of the lower circuit, both consumers and vendors. The analysis of these questionnaires, along with the theoretical background, has revealed that there are several social and political conflicts related to the use of public spaces, such as sidewalks and flowerbeds, in the city commercial center, and that these conflicts are increasingly demonstrating that vendors need a space endowed with infrastructure to conduct their activities. The lack of efficiency of the government, as well as the slowness of their actions to organize a space that is able to properly fit salespersons, constitutes one of the main problems faced by these small traders who have limited financial resources and materials to get their activities through in the globalized world. At the same time, this study revealed the importance of these agents, as the last link of the urban economy, in the distribution of various consumer goods, enabling the satisfaction of some needs of the population, especially the poorer people / Este estudo se fundamentou na an?lise e na compreens?o da din?mica do circuito inferior da economia e na dimens?o do com?rcio ambulante na cidade de Mossor? (RN). A operacionaliza??o da teoria dos dois circuitos da economia urbana, com base em Santos (2008a) foi imprescind?vel para se entender o com?rcio ambulante como parte da totalidade da cidade de Mossor?. Deu-se ?nfase ao estudo do circuito inferior da economia e sua abrang?ncia ilegal no centro comercial da cidade, mais especificamente no com?rcio ambulante na Rua Coronel Gurgel. A din?mica da referida rua revela as diferentes formas que o territ?rio ? usado, simultaneamente, por diversos agentes sociais como pedestres, consumidores, propriet?rios de estabelecimentos comerciais e, sobretudo, pelos vendedores ambulantes. Estes vendedores ocupam os espa?os do centro comercial, instalando suas barracas ou bancas, especialmente, nas cal?adas, locais estrat?gicos por excel?ncia, para a comercializa??o de seus produtos, devido ao grande fluxo pessoas que buscam bens e servi?os no local. Como procedimentos metodol?gicos e t?cnicos, para o levantamento de dados prim?rios, optou-se pela aplica??o de question?rios e realiza??o de entrevistas, com diversos usu?rios do circuito inferior, tanto consumidores, como vendedores. A an?lise destes question?rios, juntamente com o embasamento te?rico, nos revelou que existem v?rios conflitos sociais e pol?ticos ligados ao uso dos espa?os p?blicos, como cal?adas e canteiros, no centro comercial, e que estes conflitos demonstram cada vez mais que os ambulantes necessitam de um espa?o dotado de infraestrutura para a realiza??o de suas atividades. A falta de efici?ncia do poder p?blico, assim como a lentid?o de suas a??es, em organizar um espa?o que tenha condi??es de instalar adequadamente os vendedores ambulantes, se constitui como um dos principais problemas enfrentados por estes pequenos comerciantes, que disp?em de poucos recursos financeiros e materiais para desenvolverem suas atividades de sobreviv?ncia no mundo globalizado. Ao mesmo tempo, verificou-se a import?ncia desses agentes, enquanto ?ltimo elo do circuito da economia urbana, na distribui??o de v?rios bens consumo, possibilitando a satisfa??o de algumas necessidades da popula??o, em especial, da parcela com menor por aquisitivo

In recent time, forests in Sweden have lost habitat quality in the loss of deadwood due to the practices in productions forestry. This means that substrates for epixylic species has decreased both in quality and quantity. The aim with this study was to find which preferences the epixylic liverwort, Crossocalyx hellerianus has on its substrate and environment. C. hellerianus requires coarse logs with rotten wood, which usually is more available in forests with long forest continuity. This study was performed to see if forest continuity, isolation of habitats and if the substrate was of significance for a demanding species such as C. hellerianus. The study was performed in six sites and in each site several 50x10 meter transects were surveyed for logs. Each log was measured for diameter, sun exposure, ground contact, stage of decay and if the log was colonized by C. hellerianus. The result showed that C. hellerianus preferred coarser logs and that the species only appeared on an intermediate or later stage of decay. A high forest continuity and low habitat isolation turned out to be positive factors for the abundance of C. hellerianus

Made available in DSpace on 2015-03-13T17:08:41Z (GMT). No. of bitstreams: 1 SamiaFL.pdf: 2363626 bytes, checksum: 8067b8065fc31135e35d263ce60bc5e0 (MD5) Previous issue date: 2006-03-15 / The brazilian marginal basins have a huge potential to generate and accumulate petroleum. Incised valleys which are eroded in response to a fall of relative sea level are related to potential reservoir as well, modern drowned-valley estuaries serve as harbors to petroleum and salt industries, fisheries, waste-disposal sites and recreational areas for a significant fraction of the world s population. The combined influence of these factors has produced a dramatic increase in research on modern and ancient incised-valley systems. This research is one expression of this interest. The integrated use of satellites images and high resolution seismic (bathymetry, sides scan sonar) was used on the Apodi River mouth-RN to characterizes the continental shelf This area is located at the Potiguar Basin in the NE Brazilian Equatorial Atlantic margin. Through bathymetric and side scan sonar data processing, a digital Terrain Model was developed, and a detailed geomorphologic analysis was performed. In this way was possible to recognize the geomorphologic framework and differents sismofacies, which may influence this area. A channel extending from the ApodiMossor? river mouth to the shelf edge dominates the investigated area. This structure can be correlated with the former river valley developed during the late Pleistocene sea level fall. This channel has two main directions (NW-SE and NE-SW) probably controlled by the Potiguar Basin structures. The western margin of the channel is relatively steep and pronounced whereas the eastern margin consists only of a gentle slope. Longitudinal bedforms and massive ridges also occur. The first are formed doe to the shelf sediment rework and the reef-like structures probably are relics of submerged beachrock-lines indicating past shoreline positions during the deglacial sea-level rise. The sub-bottom seismic data allow the identification of different sismic patterns and a marcant discontinuity, interpreted as the Upper / As bacias marginais brasileiras t?m um grande potencial gerador e acumulador de petr?leo, em geral associados a um sistema de vales incisos que s?o desenvolvidos em resposta a queda do n?vel do mar. Esses sistemas est?o diretamente relacionados com atividades econ?micas desenvolvidas em regi?es costeiras, como portos para ind?stria petrol?fera, salineira, pesqueira e atividades recreativa para uma significante fra??o da popula??o mundial. Esta disserta??o apresenta a caracteriza??o geomorfol?gica e paleogeogr?fica da plataforma continental brasileira adjacente ? foz do rio Apodi-Mossor?/RN, atrav?s do uso integrado de imagens de sat?lite e geof?sica de alta resolu??o (batimetria, s?smica e sonar de varredura lateral). Essa regi?o est? localizada na Bacia Potiguar, na Margem Equatorial Atl?ntica. A partir dos dados batimetricos, foi confeccionado e aferido um modelo digital de terreno (MOT), e desenvolvida uma an?lise geomorfol?gica detalhada, que integrada aos dados hidrodin?micos proporcionou uma melhor compreens?o dos fatores oceanogr?ficos atuantes na regi?o, de forma a entender a resposta geomorfol?gica dessa regi?o afogada pela r?pida subida do n?vel do mar, no Holoceno. A principal fei??o identificada foi um canal submerso na plataforma interna, provavelmente relacionado com o sistema de vales incisos formado durante o rebaixamento do n?vel do mar no Pleistoceno. O canal tem duas dire??es principais (NW-SE e NE-SW), aparentemente controladas pelas estruturas tect?nicas da Bacia Potiguar. A margem oeste do canal ? relativamente soerguida em rela??o ? margem leste. Este soerguimento ? aqui relacionado ? presen?a do Alto de Icapu? a oeste da ?rea. Recifes e dunas submersas tamb?m est?o presentes na ?rea. Os recifes relacionados a estruturas reliquiares submersas como rochas de praia podendo indicar antigas linhas de costa posicionadas durante a subida do n?vel do mar. Com base nos dados s?smicos, foi poss?vel identificar uma descontinuidade presente em todas a ?rea interpretada como o limite Pleistoceno Superior/Holoceno Inferior, bem como sismof?cies referentes a diferentes padr?es de preenchimento e sedimenta??o do canal submerso e da plataforma durante a subida do n?vel do mar no Holoceno