The water catchment area of the igarapé Água Boa do Bom Intento is located in the central region of the state of Roraima, with an area of 271.82 km² and extension of the main channel of 32.17 km from the source to the mouth. The objective of this research was to carry out an integrated study of the landscape in the hydrographic microbasin of the igarapé Água Boa do Bom Intento, analyzing the forms of use, occupation and impacts generated and and environmental planning and recovery indicators. In methodological terms, the integrated analysis was elaborated from the characterization of the components of the environmental systems, the morphometric analysis of the hydrographic basin, the occupation processes, the environmental impacts, the chemical, physical and microbiological analysis of water. The catchment area is located in the Boa Vista formation region and the Areias Brancas formation, dominated by Central Guyana, presenting the soils in two main types: Argisol gray aluminum and latosol yellow aluminum. The climate that characterizes the region of the Lavrados of Roraima is the tropical monsoon of the type Awi, with annual average temperatures of 26ºC and the highest average annual rainfall over 1600 mm. The physiography consists of Savannah Park, Savannah Graminosa, Small Forest Islands, Gallery Forests and Buritis Forests. The morphometric indices indicate a microbasin with a dendritic drainage pattern, with a low degree of branching, with a rectilinear course, an elongated shape, a low altitudinal range, a low roughness index, a low relief ratio and a low drainage density, slopes with low slope, less susceptible to flooding, higher flow velocities and channels of little extension. The main forms of use and occupation are the small properties for in recreation, for subsistence agriculture, farms for fish farming, livestock and planting of grains, the main environmental impacts being the irregular launch of domestic sewage, the disposal of inorganic waste, erosive processes and deforestation in the Permanent Preservation Areas. As for the water of the igarapé it is classified as special class of fresh water, for human consumption and supply and excellent category for recreation of primary contact.

The state of Roraima (Brazil) has the largest continous area of savannas (cerrados) of the Amazon biome, occupying a surface of 42.706 km2. “Lavrado”, the name assigned to the region of savannas in Roraima, has been submitted to a continuous process of change due the establishment or enlargement of highway axis which work as support for expansion projects in agriculture and cattle raising. Currently in the Brazilian regions of savannas, there are the major part of the great plans of expansion for the agribusiness sector (sugar cane, soy, silviculture etc.), which introduced a wide modification in the geological conditions of the landscape. In this context, the aim of this study was to ascertain the existence of indicatives that the type of occupation of amazon savannas, in Roraima, emulates the one adopted in the Cerrado of the center of Brazil and disregard the environmental specificities of the ecosystem of amazon savanna, in which concern to its biological importance and geoecological singularity. The municipality of Boa Vista, area selected for the research, was considered as a representative scenario of this recent process of expansion of agriculture and cattle raising in Roraima. The period between the years of 2000 and 2014 represents a period of marked changes of the profile of use and occupation of land in savanna areas in the state. In this perspective we adopted the methodology of Environmental Analysis by Geoprocessing proposed by Xavier da Silva and Carvalho Filho (1993). The results permitted to affirm the historical process of occupation of savannas of Roraima emulates the model of development, supposedly virtuous, conceived and implemented for the Cerrado of the center of Brazil, from the actions of the State, initially through regional plans of development, followed by the creation of agricultural colonies, intensification of migratory process, investments in infrastructure of transportation and provision of subsidiated credit, among others. The government of Roraima, when taking the role of development of Roraima to itself, focused the strategies in the strength of agriculture and cattle raising. Thus, the savanna areas became strategic to the productive process. However, the occupation and expansion of agricultural activities in the landscapes of savannas of Roraima is also guided by extra-local decisions, which ones are intrinsically linked to the action of politics and/or social actors. The interpretation of satellite images, backed in the making of thematic maps and quantification in GIS environment, showed that an intensification of the use and modification of land cover in the municipality of Boa Vista, linked to the production of grains, has been contributed for the displacement of cattle raising, traditional fields and savannas for the forest areas of the South of the state, contributing for the alteration of landscapes of savannas of the municipality. Thus, we notice that the model of development in consolidation in the state is marked by the intensified use of savannas and is materializing itself in the space, through monocultures mostly of soy, legitimation of land concentration, intensification of mechanization, and the results has been the negative environmental impacts. According to the singularities of the savannas of Roraima, it is a job for the managers – public and private ones – intensify the process of strategic planning aiming the sustainable use of the natural resources of the savannas. This process must have as guiding instrument the Ecological-Economic Zoning (ZEE), where the actors involved insert the environmental question with long term views, and the aptitudes and particularities of the ecosystem may be potentiated with the verticalization of the agriculture and cattle raising production, affecting all productive sectors, as well as promoting researches aiming the maintenance of the ecosystem services of the savannas in the scope of the already existent process of development.

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Fatores edáficos vem sendo indicados como determinantes para a distribuição de comunidades de plantas na Amazônia. O objetivo deste estudo foi investigar quais fatores edáficos determinam a ocorrência de leguminosas herbáceas em savanas amazônicas. Para tanto, foi realizado um inventário da flora herbácea da família Leguminosae em 34 parcelas permanentes estabelecidas em duas áreas de savana de Roraima, norte da Amazônia brasileira. As espécies Chamaecrista desvauxii (24,9%), Aeschynomene histrix (15,7%) e Galactia jussiaeana (10,8%) foram as de maior índice de valor de importância. Todas com grande abundância e ampla distribuição. Os resultados indicaram baixa densidade ou ausência de indivíduos e espécies em parcelas estabelecidas em solos mal drenados (hidromórficos). Diversidade e riqueza de espécies tendeu a ser maior em habitats formados por solos bem drenados, mais férteis e com menor concentração de alumínio trocável. É sugerido que solos pobres e sazonalmente alagados reduzam as chances de ocorrência e afetem negativamente a riqueza/diversidade de leguminosas herbáceas nas áreas de savana de Roraima.

Tarî Roraimî ta‟ e‟maine pu‟ tamînawîrî kaixirî Manoel da Gama Lobo de Almada ipîkku pe tîwîsen, mîkîrî ekooneka‟pî 1789 kono pî. Paaka iipî‟pî Roraimî ta‟ maasa pra mararî pra epînto e‟pîtî‟pî tiaron pata ponkon europeusyamî irataikkoyamî moroopai makuusiyamî‟ pata esanan uyunpakon ramono‟ta poronkon tîkomansenan pokon pe. Maasa pra makuusiyamî‟ tumatî‟pî to‟ya to‟ patase‟ pîkînsa. Tîîse makuusiyamî‟wanî‟pî meruntîke moroopai teepîto‟kon teserukon konekapî‟tî‟pî to‟ya. Tîîse tiwin wei 1990 kono‟pî makuusiyamî‟ patase‟ton epakapî karîta pona tîmenukai ipîkku pe tepusen pe tipanakai tinapoi to‟ komanto patase‟ pe. Mîrîrî î‟konrî ku‟to menukato epoto‟ wanî‟pî meruntîke maasa pra Paapa Miami yanankon Consolata tawonkonya to‟ pikkatî‟pî paakyamî‟ yarî‟pî to‟ komanto‟ ta‟. Mîrîrî wanî‟pî tîkonekapî‟se teeseurumai tîmenukai paaka erapanto pî‟ to‟ momento patase‟ya. Seeni imenukato eseuruma mîrîrîpî‟. Mîrîrî e‟mainon ikarîmeto mîrîrî ramono‟ta wonkon poronokon tîkomansenan makuusiyamî‟ eseru pî, o‟non yekape paaka erepansa wanî makuusiyamî‟ eseru tonpe. Itakon tekape imenukusata, eseuruma o‟non yekape tekînkon tuwarîkato‟ya‟ tîpatakonya, to‟ pikaatîiya ou kanne paaka tîwarîka to‟pî. E‟mainon to‟ eseru mîrîrî paaka mîîkîrî to‟ eseru to‟ komanto ta‟ tîwesen; Ipîkîron mîrîrî paaka tîwarîka to‟ya mîrîrî tîpata konya toyonkon ton tîwentîtokon ton wei kaixîrî, ituseurîno eseru wanî mîrîrî tamînawîronkon tîkomansenan tîpata kon ya inkamoroya paakayamî‟ erama‟pî tîwarîkapî‟ to‟ e‟pîka‟tî. Tîîse seeni imenukasa karîta po wanî manne mîrîrî wanî itenîkaya, nen mararîto‟ eseru, to‟ ekonekato ton pra wanî karîta po wanî inenukusa pe itenîkaya. Iteseurîno imenukato eseuruma paakayamî‟ tîwarîkato eratî‟pî tîkomansenan makuusiyamî‟ pepîn wappu‟pe, maasa pra î‟konrî tîkonîkasen tîwin pî enanpî‟man ipîkkupe mararîpra si‟na makuusiyamî‟ komanto eseru yentai. Ese'wanîkon ipîkku kon: pemenkonyamî makuusiyamî patase', ramono‟ta, paakayamî' epanî'to', Roraimî

The state of Roraima is located in the extreme north of Brazil has presented itself as a tourist attraction by the exuberant nature that encompasses it. Many companies have been created to take advantage of the opportunities given the demand for recreation and leisure activities associated with tourism. In the capital, Boa Vista, it is possible to find enterprises that use lakes as an option to enjoy leisure. It is known that every new building produces impacts, even when they are in regions that use nature as attractive. The study area consists of the Lago Robertinho project located in Boa Vista, 40 km from the BR-174 and 20 km from Boa Vista / Pacaraima on the left close of the Murupú River. This place is renowned for scenic beauty regionally recognized for attracting visitors by hosting a company that offers adventure and leisure activities around a lake. In this sense, the general objective of this dissertation is to analyze the feelings, attitudes and behaviors of visitors, in relation to the environmental variable, taking as an empirical object the venture Lago do Robertinho. For that, a qualitative-quantitative research was conducted, with interviews to the visitors of the enterprise, employees and manager with methodological and data triangulation. A bibliographic survey was carried out on the ecological dynamics of the Lake and its characterization, use of cartographic data of IBGE and use of image of Remote Sensors that underwent atmospheric and radiometric corrections. Software were used to compile the thematic maps of location, slope, elevation and main stretches of access to the lake. Therefore, the research shows that the environmental impacts resulting from the presence of solid residues, damage to vegetation, soil erosion, irregular constructions and irregular trails are of low complexity, since management by the lake takes care of this, except for the concern with guidelines directed to visitors. As for the feeling of the visitors in relation to the lake, it occurs, mainly, in the pursuit of leisure, pleasure and tranquility. The age group of people who attend the venture turns to the young public and the attention paid refers to the landscape and the attractions. However, it is necessary to use guidelines with the use of signs (signs), in the search of the visitors' sensitization in relation to the susceptible environmental impacts that generate negativity to the development and conservation of the landscape.