Thesis process of basic terms related to the real estate market and real estate sales. The study also addressed overview of our segments in the real estate market in Lipensko, their characteristics, construction, engineering, urban planning, and economic factors. It´s about the village of Horní Planá, Černá v Pošumaví, Frymburk and Lipno nad Vltavou. In Lipno nad Vltavou are always chosen for each segment three representatives who are investigated and subsequently compared. The work also points to the trends in the real estate market in this area.

Made available in DSpace on 2015-03-26T13:42:15Z (GMT). No. of bitstreams: 1 texto completo.pdf: 1405747 bytes, checksum: c75e615e150ddd0e86f3240d84082166 (MD5) Previous issue date: 2009-07-17 / The aim was to determine the genetic parameters of progeny tests in Eucalyptus grandis Hill Maiden with 3 years old under competicional effect, as well as to study the genotype x environment interaction and its impact on strategies for direct and indirect selection and analyze different selection strategies like selection among and within, mass, stratified mass selection and combined selection in three different locations of the Company Jari Celulose S/A. The experimental design was a randomized block with 93 half-sib progenies, 10 replications, linear plots of five plants and spacing of 3m x 2m. The evaluated characteristics were height (ALT), in meters, diameter at breast height (DBH) in cm and the volume (VOL) in m3. It were estimated selection gains with a percentage of 20% between half-sib and 40% within, the same being maintained for all selection strategies analyzed. It was detected high plants mortality in the experiments, which interfered with the accuracy of the experiments. The progeny tests showed genetic variability, with greater variability within plots. It was also detected competicional effect observed by the negative intraclass correlation among plants within plots. Its existence interfered in the estimates of phenotypic variance within plots and environmental variance. In the interaction study were found significant effects for genotypes and also for the genotype x environment interaction, showing variability among progenies and differential behavior along these different environments. Regarding to the analised places, local 2 and 3 showed no significant interaction. The site has major direct gain and maximized the gain for the other two locals was the local 2. To analyze the selection gain with different strategies such as selection among and within, mass selection, stratified mass selection and combined selection, the analysis were done only with DAP, because of its high correlation with other variables. The combined selection strategy showed superior results to the selection processes among and within, mass and stratified with percentages estimates ranging from 6.67% to 18.67%. / O objetivo deste trabalho foi a determinação dos parâmetros genéticos de testes de progênies de Eucalyptus grandis Hill Maiden com 3 anos de idade sob efeito competicional, assim como estudar a interação genótipo x ambiente e seus reflexos nas estratégias de seleção direta e indireta e analisar diferentes estratégias de seleção como seleção entre e dentro, massal, massal estratificada e seleção combinada, em três diferentes locais da empresa Jari Celulose S/A. O delineamento experimental utilizado foi de blocos casualizados, com 93 progênies de meios irmãos, 10 repetiçõe, parcelas lineares de 5 plantas e espaçamento de 3m x 2 m. As características avaliadas foram a altura (ALT), em metros, diâmetro à altura do peito (DAP), em cm e o volume (VOL), em m3. Foram estimados os ganhos de seleção com uma percentagem de 20% entre e 40% dentro, sendo as mesmas mantidas para todas as estratégias de seleção analisadas. Foi detectado elevada mortalidade das plantas nos experimentos, que interferiu na precisão dos experimentos. Os testes de progênies apresentaram variabilidade genética, sendo maior variabilidade dentro de parcelas, também foi detectado o efeito competicional, observada pela correlação intraclasse negativa entre plantas dentro de parcelas. Sua existência interferiu nas estimativas de variância fenotípicas dentro de parcelas e variância ambiental. No estudo da interação foram detectados efeitos significativos para genótipos e também para a interação genótipo x ambiente, evidenciando variabilidade entre as progênies avaliadas e comportamento diferencial destas ao longo dos diferentes ambientes. Em relação aos locais analisados, os locais 2 e 3 apresentaram interação não significativa. O local que possui maior ganho direto e maximizou o ganho para os demais locais foi o local 2. Para analisar o ganho de seleção com as diferentes estratégias como seleção entre e dentro, seleção massal, massal estratificada e seleção combinada, as análises foram realizadas somente com a variável DAP, devido sua alta correlação com as demais variáveis. A estratégia de seleção combinada apresentou resultados superiores aos processos de seleção entre e dentro, massal e massal estratificada, com estimativas em percentuais variando de 6,67% a 18,67%.

This thesis focuses on the changes of vegetation of the wet meadows in Slavkovský Les during past decade. It uses data on vegetation gained from 100 permanent plots. By the analysis of the species composition and diversity it aims to elucidate the changes of the wet meadows over the last ten years. It aims to define, which are declining and which are becoming more common. Applied management should have a great impact on the observed vegetation changes so its effect is studied in the thesis as well. The knowledge of the suitable management should lead to conservation of the local biodiversity. The abiotic environmental factors are important as well as they can influence the species composition. These factors were studied by the application of Ellenberg indicator values on the species present in the study. These changes were compared in time and in a combination of time with a management type. Thus, we should be able to say how the environment has changed in the past decade and whether the type of management has any effect on the changes. Furthermore, the thesis explores whether changes in species composition over time may be explained by species traits. The results indicate that the species diversity and composition have indeed changed during the past decade. Apparently, the higher amount of...

The diploma thesis deals with the profile of fiction published in the magazine Lada on the turn of the nineteenth century into the twentieth. The chosen representative sample of six volumes stretching over the period of twenty years was thoroughly analyzed, focusing on the most important aspects of the individual prosaic contributions, which are the following: the theme, both the main and the supporting characters, the plots, the time and space dimension of the stories, the autor's style, the tuning of proses and their belonging to different artistic movements. Another perspective of interest to this project is the author's background, its changes over time and its influence on the overall orientation and appearance of the magazine, with the overall characteristics of it also included. The deeper, intellectual background reflected in the individual proses is also discussed. Given the fact that the publishing timeline extends over two different historical epochs, this final thesis strives to find answers to the question of to which extent the author's thinking was influenced by the historically social context, i.e. to what degree the authors adopt the modern, progressive ideas of the newly shaping society of the twentieth century, and conversely, to what extent both their opinions and thinking are...

Orientador: Prof. Dr. Filipe Ieda Fazanaro / Dissertação (mestrado) - Universidade Federal do ABC, Programa de Pós-Graduação em Engenharia da Informação, 2018. / A detecção de atividade de voz é um problema importante em muitas aplicações de fala/áudio, incluindo codificação e reconhecimento automático de fala; vários algoritmos foram propostos na literatura explorando diferentes métricas de sinais (como a energia do sinal). Neste trabalho, é apresentada uma metodologia alternativa para detecção de atividade vocal (VAD) de um discurso ou sinal de áudio com base nas informações fornecidas pelos gráficos de recorrência do sinal. O método proposto foi capaz de classificar corretamente sinais limpos e com baixos níveis de ruído, apresentando desempenho próximo ao algoritmo incluído no codec G.729, que é comumente usado em aplicativos de Voz sobre IP (VoIP). / Voice activity detection is an important problem in many speech/audio applications, including coding and automatic speech recognition; several algorithms have been proposed in the literature to explore different signal metrics (such as signal energy). In this work, an alternative methodology for the Voice Activity Detection (VAD) of a discourse or audio signal is presented based on the information provided by the signals¿ recurrence plots. The proposed method was able to correctly classify clean signals and with low levels of noise, obtained performance similar to the algorithm included in the G.729 codec, which is commonly used in VoIP applications.

A desordem na ocupaÃÃo dos territÃrios brasileiros à um fato real desde a Ãpoca da colonizaÃÃo. Com o passar do tempo, os problemas foram apenas mudando de forma, mas jamais foram solucionados, deixando sempre uma heranÃa difÃcil de ser resolvida. A partir dos anos 1970, inicia-se um grande ciclo de debates em torno dos problemas da desordem urbana e das ocupaÃÃes mal planejadas. ApÃs a aprovaÃÃo da onstituiÃÃo Federal de 1988, os municÃpios brasileiros assaram a ter um novo modo de desenvolver polÃticas pÃblicas urbanÃsticas, recebendo competÃncias legislativas sobre a matÃria e podendo exercer sua funÃÃo de ordenadora da sua territorialidade. Ao ser aprovada a Lei no 10.257/01, que institui o Estatuto da Cidade, ficou definido como se processariam as polÃticas pÃblicas de planejamento urbano. Embora se tenha feito muito, pouco se evoluiu, pois os planos diretores foram sendo criados e aprovados, mas com muitas falhas, pouca legitimidade e participaÃÃo. Neste contexto, esta dissertaÃÃo avalia a PolÃtica PÃblica de Uso e OcupaÃÃo do Solo na Zona Rural do MunicÃpio de Guaramiranga, com base na anÃlise de legitimidade legal da nomenclatura âZona Rural Especialâ, - que nÃo se apresenta como ilegal, mas acaba por gerar dÃvidas aos que operam com a lei. Mediante investigaÃÃo da viabilidade jurÃdica da instalaÃÃo de condomÃnios e loteamentos fechados na Ãrea rural do municÃpio por meio de um trabalho da anÃlise de leis, suscitaram-se os problemas gerados por conflitos entre as normas estaduais que regulamentam a APA de BaturitÃ, e os ditames da lei municipal que se enquadra como competente para regular o uso do solo em zona rural. Isso posto, este trabalho percorre os caminhos da doutrina jurÃdica referente à legalidade dos loteamentos e/ou condomÃnios fechados, apontando que, para a regulamentaÃÃo destes, deve haver normas municipais que os definam, e os empreendimentos devem seguir os preceitos de leis federais que os caracterizem. Com isso, pretendeu-se avaliar esta polÃtica pÃblica e propor soluÃÃes e medidas necessÃrias para o melhor regramento do uso do solo rural do MunicÃpio de Guaramiranga. / The disorder in the occupation of the Brazilian territory is a fact since the colonization period. Over time, the problems just changed forms but never had a solution, always leaving behind a heritage that was hard to solve. The first cities were on the coastland and soon also started to develop towards the inside of the continent. Those cities were usually located close to natural resources that suffered with the pressure exerted over the riverbed deteriorating their natural conditions. As from the 1970âs, a large cycle of debates started about urban disorder problems and unplanned occupations. After the approval of the Federal Constitution of 1988, Brazilian cities started to develop urban public policies in a new way, with legal competency to rule on the issue and power to exert their territorial order function. The approval of Law 10.257/01, which established the City Statute, defined the processing of public urban planning policies. Although a lot has been done, evolution was small, as urban plans were created and approved, however, with many flaws, little legitimacy and participation. In this context, this thesis assesses the Public Policy of Land Use and Occupation in the Rural Zone of Guaramiranga, based on an analysis of the legitimacy of the nomenclature âSpecial Rural Zoneâ which, although not illegal, ends up generating doubts among stakeholders. The examination of the legal viability of the installation of condominiums and land plots in the rural area of the city, through a legal analysis, surveyed the problems created by conflicts between state laws that regulate the APA of BaturitÃ, and the dictates of the Municipal Law, with legal competency to regulate land use in the rural zone. This study looks at the legal doctrine that rules the legality of condominiums and land plots, appointing that, for their regulation, here should be municipal rules to define them, and the projects should follow the rules of the federal laws that characterize them. This study intended to evaluate this public politic and propose solutions and measures needed for a better regulation of rural land use in Guaramiranga.

Made available in DSpace on 2017-07-10T17:40:58Z (GMT). No. of bitstreams: 1 Tese_2012_Valdemir_Aleixo.pdf: 1922736 bytes, checksum: a33bf96bdf4ef97638ed8d2af3ef4198 (MD5) Previous issue date: 2012-08-13 / This study evaluated the development of J. curcas in relation to floor area available to each plant under different cropping systems. The experiment was conducted in the period between october 2009 and may 2011, the Toledo, Paraná. The seedlings were grown in a greenhouse environment, in containers filled with commercial substrate (Plantmax®), for a period of 50 days before transplanting to the field. The experiment was established in systematic design, in factorial 3 x 4 x 5 with four replications. The treatments consisted of three provenances (DOU-Dourados, MS, JAN-Janaúba, MG; PET-Petrolina, PE), distributed in four cropping systems (WC-weed competition, GS-Growing Single, CAC-Consortium Agronomic Crops, PCH-Permanent Consortium with herb) and each with five areas useful (1.57, 4.71, 7.85, 11.00 and 14.50 m2 plant-1). Evaluations were made of the total plant height, diameter of the neck base, the canopy diameter, number of leaves, number of branches and the SPAD index at 540 days after transplant. The means were compared by Tukey test at 5% probability. For purposes of density, quantitative data were analyzed by polynomial regression at 5% probability. The Single cropping system was the most suitable for the vegetative growth of plants J. curcas. The three provenances tested were impacted by the available floor area per plant, the plant development. The transformation of the useful areas tested for a spacing means spacing rectangular 3.0 x 3.5 as appropriate. The SPAD index showed no differences as a function of floor area per plant / Este trabalho objetivou avaliar o desenvolvimento de J. curcas em relação à área útil disponível para cada planta, em diferentes sistemas de cultivo. O experimento foi conduzido no período compreendido entre outubro de 2009 e maio de 2011, no Distrito de Dois Irmãos, Município de Toledo, Paraná. As mudas foram produzidas em ambiente casa de vegetação, em tubetes preenchidos com substrato comercial (Plantmax®), por um período de 50 dias, antes do transplante a campo. O experimento foi implantado em delineamento sistemático, em esquema fatorial 3 x 4 x 5, com quatro repetições. Os tratamentos foram compostos por três procedências (DOU-Dourados, MS; JAN-Janaúba, MG; PET-Petrolina, PE), distribuídas em quatro sistemas de cultivo (TES-Matocompetição, SOL-Cultivo Solteiro, CCA-Consórcio de Culturas Agronômicas, CPH- Consórcio Permanente com Herbácea) e cada uma delas com cinco áreas úteis (1,57; 4,71; 7,85; 11,00 e 14,50 m2 planta-1). Foram realizadas avaliações da altura total da planta, do diâmetro da base do colo, do diâmetro da copa, do número de folhas, do número de ramos e do Índice SPAD, aos 540 dias após o transplante. As médias foram comparadas pelo teste Tukey a 5% de probabilidade. Para efeito de densidade, os dados quantitativos foram submetidos à análise de regressão polinomial ao nível de 5% de probabilidade. O sistema de cultivo Solteiro foi o mais adequado para o desenvolvimento vegetativo de plantas de J. curcas. As três procedências testadas sofreram influências da área útil disponível por planta, no desenvolvimento vegetal. A transformação das áreas úteis testadas para um espaçamento retangular indica o espaçamento 3,0 x 3,5 como o mais adequado. O índice SPAD não evidenciou diferenças em função da área útil por planta

Submitted by Renata Lopes (renatasil82@gmail.com) on 2017-01-16T13:19:07Z No. of bitstreams: 1 josefelipesalomaopessoa.pdf: 2240048 bytes, checksum: 698aecc874e0df59ca702e747e6bf1be (MD5) / Approved for entry into archive by Diamantino Mayra (mayra.diamantino@ufjf.edu.br) on 2017-01-31T10:34:55Z (GMT) No. of bitstreams: 1 josefelipesalomaopessoa.pdf: 2240048 bytes, checksum: 698aecc874e0df59ca702e747e6bf1be (MD5) / Made available in DSpace on 2017-01-31T10:34:55Z (GMT). No. of bitstreams: 1 josefelipesalomaopessoa.pdf: 2240048 bytes, checksum: 698aecc874e0df59ca702e747e6bf1be (MD5) Previous issue date: 2016-07-26 / CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / O objetivo do estudo foi fornecer informações sobre a estrutura, composição florística e o estado de conservação do Parque Natural Municipal da Lajinha, Juiz de Fora, MG. Foram alocadas, aleatoriamente e georreferenciadas 25 parcelas permanentes, de 20 x 20 m, totalizando 1393 indivíduos arbóreos vivos e 145 mortos em pé (CAP ≥ 15,7 cm), pertencentes a 155 espécies, 100 gêneros e 51 famílias. Nectandra nitidula, Eugenia hiemalis, Bathysa australis, Virola bicuhyba, Alchornea triplinervea são as cinco espécies com maior VI, enquanto Fabaceae (23), Myrtaceae (14), Lauraceae (11), Euphorbiaceae (8), Sapindaceae (7), Meliaceae (5), Monimiaceae (5) e Rubiaceae (5) são as famílias com maior riqueza de espécies. O índice de diversidade de Shannon (H’) foi um dos mais altos registrados para florestas da região (H’ = 4,36 nats.ind-1), contendo inclusive espécies ameaçadas (Ocotea odorifera, Virola bicuhyba, Dicksonia sellowiana), segundo critérios do Livro vermelho da flora do Brasil. Metade da comunidade e a maioria das mortas se enquadram na primeira classe diamétrica proposta (7,5 cm), o que reflete elevado grau de competição. A distribuição diamétrica da comunidade seguiu o modelo “J-reverso”, padrão para comunidades florestais tropicais. O elevado índice de equabilidade de Pielou (J’ = 0,866) mostra baixa dominância ecológica e alta heterogeneidade florística da comunidade, confirmadas pelas análises de agrupamento florístico (coeficiente de Morisita-Horn), inferior a 0,5, e DCA (Análise de Correspondência Distendida), que apresentou altos valores, superiores a 0,3 (Eixo 1 = 0,49 e Eixo 2 = 0,33). O resultado da análise de similaridade florística nas unidades amostrais, utilizando o coeficiente qualitativo de Jaccard, evidencia a importância das espécies de baixa densidade na amostra. Esses resultados expõem a complexidade da dinâmica de funcionamento dos processos bióticos presentes em uma comunidade florestal secundária. Estudos com medições posteriores poderão analisar aspectos e atributos funcionais dessas espécies e seu papel efetivo na comunidade. A presença de espécies raras para o Estado de Minas Gerais e o alto índice de diversidade encontrado evidencia o potencial biológico do Parque Natural da Lajinha e reforça a necessidade da adequação do mesmo para se tornar Unidade de Conservação. / The aim of this study is to provide information about the conservation status, structure and composition of the Parque Natural Municipal da Lajinha, Juiz de Fora, Minas Gerais State, Brazil. Randomly placed and georeferenced 25 permanent plots of 20 x 20 m, totaling 1393 individuals living arboreal and 145 dead in sampled (CAP ≥ 15,7 cm), belonging to 155 species, 100 genera and 51 families. Nectandra nitidula, Eugenia hiemalis, Bathysa australis, Virola bicuhyba, Alchornea triplinervea are the five species with higher IV as Fabaceae (23), Myrtaceae (14), Lauraceae (11), Euphorbiaceae (8), Sapindaceae (7), Meliaceae (5), Monimiaceae (5) and Rubiaceae (5) are families with the highest species richness. The Shannon diversity index (H’) was one of the highest recorded for the region's forests (H’ = 4,36 nats.ind-1), containing including endangered species (Ocotea odorifera, Virola bicuhyba, Dicksonia sellowiana), according to Red Book of Brazilian flora. Half community and most dead fall within the first class proposal diameter (7,5 cm), which reflects the high degree of competition. The community diametric distribution followed the model "J-reverse" standard for tropical forest communities. The high evenness index of evenness (J’ = 0.866) shows low ecological dominance and high floristic heterogeneity of the community, floristic confirmed by cluster analysis (Morisita-Horn coefficient) is less than 0,5, and DCA, which showed values greater than 0,3 (Axis 1 = 0,49 and Axis 2 = 0,33). The result of floristic similarity analysis using qualitative coefficient of Jaccard highlights the importance of species of low density in the sample. These results expose the complexity of the operating dynamics of biotic processes present in a secondary forest community. Further resampling studies may analyze functional aspects and attributes of these species and their effective role in community. The presence of rare species for the state of Minas Gerais, the availability of resources for the regional fauna and high diversity index shows the biological potential of the Natural Park of Lajinha and reinforces the need to adapt the same to become a Unit Conservation.

Cette thèse est réalisée dans le cadre d'un contrat CIFRE avec l'agence d'urbanisme del'agglomération stéphanoise, Epures.L’ambition de cette recherche est de proposer une méthode « objective » et« systématique » de lecture de l’héritage matériel d'un territoire, ce qui imposed’abandonner tous critères de sélection discriminant : l’ensemble des traces matériellesqui forme cet héritage peut être déduit de l’analyse d’unités minimales et objectives(parcellaire, bâti, réseau viaire) , dont l’apparition, la disparition et la transformation dans letemps peuvent être retracées par l’exploitation de sources spécifiques en particulier descartes anciennes disponibles. D’autres unités, linéaires, ponctuelles ou surfaciquespeuvent être mises en évidence par une confrontation directe avec le terrain.L'analyse a été réalisée sur la partie ligérienne de l'ancienne vallée industrielle du Gier.La méthode met en oeuvre un Système d'Information Géographique (SIG) historique quiautorise l’intégration, la réinterprétation et le croisement d’informations provenant desources variées : sérielles, textuelle, cartographiques ou iconographiques. Cet outil facilitele partage et la mise à jour des données produites.Les résultats obtenus offrent une lecture de l'évolution de la vallée du Gier à l'échelle desunités parcellaires et bâties depuis deux siècles. Ils proposent une nouvelle approche duterritoire et de son évolution qui permet de questionner les politiques patrimoniales oud'aménagement existantes. Etendue à l'ensemble de l'espace stéphanois ou à d'autresterritoires et régulièrement mis à jour, la méthode peut permettre de constituer unobservatoire de leur évolution. / This thesis is carried out within the context of a contract CIFRE with the agency of townplanning of the agglomeration of Saint-Etienne, Epures.The ambition of this research is to propose a method “objective” and “systematic” to readthe material heritage of a territory, which forces to give up all criteria of selectiondiscriminating: the whole of the material traces which forms this heritage can be deducedfrom the analysis of minimal units and objectify (plots, built elements, road network), ofwhich appearance, disappearance and the transformation in time can be recalled by theexploitation of specific sources in particular of the old maps available. Other units, linear,specific or surface can be highlighted by a direct confrontation with the land.The analysis was carried out on the “ligérienne” part of the old industrial valley of Gier.The method implements a Geographical Information system (GIS) historical whichauthorizes integration, the reinterpretation and the crossing of information coming fromvaried sources: serial, textual, cartographic or iconographic. This tool facilitates thedivision and the update of the produced data.The results obtained have offered a reading of the evolution of the valley of Gier on theplot scale for two centuries. They propose a new approach of the territory and its evolutionwhich makes it possible to question the patrimonial policies or of installation existing.Extended to the whole space of the agglomeration of Saint-Etienne or to other territoriesand regularly updated, the method can make it possible to constitute an observatory oftheir evolution.

Le Sahel, milieu compris entre le Sahara et la forêt soudanienne, subit actuellement de grands bouleversements environnementaux. Depuis les sécheresses des années 1970-1980 et la forte croissance démographique, le couvert végétal s’est considérablement dégradé, contribuant à l’augmentation du ruissellement et à l’érosion des sols. À partir de ce constat, nous avons entrepris l’étude des sociétés passées de la région de Niamey afin d’évaluer leur impact sur le milieu. Le manque de données archéologiques a nécessité de recenser les principaux indices d’occupation au cours du Néolithique et de l’Âge du fer. Outre l’apport de nouvelles datations pour le site de Kirkissoy, une étude sédimentaire a été réalisée sur un paléo-chenal du fleuve Niger et de nouveaux sites ont été identifiés. Pour l’Âge du fer, des sites d’habitat et plus de 5000 bas fourneaux à usage unique ont été cartographiés. Ils témoignent d’une activité métallurgique comprise entre le 4e et le 14e siècles AD. Les études typologique et spatiale des structures de réduction ont révélé l’existence de différents types de bas fourneaux et d’une répartition spatiale liée au contexte géomorphologique et à la gestion de l’espace de travail. L’étude d’un parcellaire sur les plateaux, associé à ces bas fourneaux, a mis en évidence une activité agricole autour de l’an mil. Le bilan de ces données archéologiques a été mis en parallèle avec les données environnementales acquises par l’étude d’un remplissage sédimentaire. Au cours des quatre derniers millénaires, la région de Niamey et le Sud-ouest du Niger ont été marqués par des changements environnementaux et sociétaux qui ont provoqué une discontinuité de l’occupation humaine. / The Sahel, a zone between the Sahara Desert and the Sudan forests, is currently experiencing major environmental changes. Since the droughts in 1970s and 1980s, and with the high population growth rate, vegetation cover has deteriorated considerably, contributing to increased runoff and soil erosion. Starting from this observation, we undertook the study of past societies in the Niamey region, to assess their impact on the environment. The lack of archaeological data meant that it was necessary to identify key indicators of occupation during the Neolithic and the Iron Age. In addition to providing new evidence to date the Neolithic site of Kirkissoy, a sedimentary study was conducted on a palaeochannel of the River Niger and new sites were discovered on the left bank. For the Iron Age, several habitat sites were identified and more than 5,000 single use bloomery furnaces were mapped. They provide evidence of metallurgical activity from the 4th to 14th centuries AD. Typological and spatial analysis show the existence of several types of furnaces and their spatial distribution is linked to workspace management and the geomorphological context. As well as these bloomery furnaces, an agricultural system with plot boundaries was identified and studied on the lateritic plateaus of Louguel. It shows intensive agricultural activity around the year one thousand. These archaeological data are compared with environmental data obtained by the study of the sedimentary record. Over the past four thousand years, the Niamey region and southwestern Niger have been marked by environmental and societal changes, resulting in discontinuous human occupation.