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Submitted by Deyse Queiroz (deysequeirozz@hotmail.com) on 2018-06-14T13:39:33Z No. of bitstreams: 1 JAENE FRANCISCO DE SOUZA OLIVEIRA - DISSERTAÇÃO PPGEA 2010..PDF: 7189495 bytes, checksum: ea2d29073b35fe44ee6f5b7407f4116a (MD5) / Made available in DSpace on 2018-06-14T13:39:33Z (GMT). No. of bitstreams: 1 JAENE FRANCISCO DE SOUZA OLIVEIRA - DISSERTAÇÃO PPGEA 2010..PDF: 7189495 bytes, checksum: ea2d29073b35fe44ee6f5b7407f4116a (MD5) Previous issue date: 2010-08 / O objetivo desse estudo foi avaliar o crescimento de peixes durante a fase juvenil sob a interferência de diferentes luminosidades, utilizando quatro úpos de sombreamentos. O experimento foi realizado no setor de piscicultura, pertencente ao Centro de Ciências Agrárias da Universidade Federal da Paraíba, desenvolvida no período janeiro de 2009 a maio de 2010. O trabalho foi conduzido em 16 tanques-rede com malhagem de 2mm, com volume útil de lm3 , a uma profundidade média de 1 m, colocados em viveiro escavado. Os tanques-rede foram povoados com juvenis de tilápia do Nilo com peso médio inicial de 17,59±5,53g e comprimento médio total de 9,63±0,95, numa densidade de 60 peixes/m2, perfazendo um total de 960 peixes, distribuídos em 16 tanques. Durante o cultivo foram analisadas as seguintes variáveis de qualidade de água: transparência, oxigénio dissolvido, pH e temperatura. Foi estudado o desempenho zootécnico: ganho de peso (GP), ganho de peso relativo, ganho em comprimento (GC). O delineamento experimental foi o inteiramente casualizado (DIC), num esquema de parcela subdividida no tempo (Split Plot in Time), onde foram testados quatro tratamentos (100%,80%,70% e 50%), com quatro repetições cada, totalizando dezesseis parcelas. Os resultados demonstraram que os parâmetros físico-químicos da água analisados estavam dentro dos níveis aceitáveis. Foi observado que os melhores índices de desempenho de ganho de peso relativo foram obtidos no tratamento 80% e o tratamento 100% obteve o pior desempenho e o pior ganho de peso relativo (%) foi no o tratamento de 100% de entrada de luz (290,20%), já o tratamento de 80% foi mais satisfatório, pois obteve o melhor ganho de peso relativo (442,29%). / The objective of this study was to evaluate the growth of Nile tilápia (Oreochromis niloticus, During the juvenile phase in the interference of light using four types of shaders. The expenment was conducted by the sector of Fish Culture, belonging to the Centre for Agrarian Sciences, Federal University of Paraíba, was developed in the period January 2009 to May 2010. The work was conducted in 16 cages with mesh size of 2mm with a volume of lm3 , the depth average of 1 m, placed in earth pond. The cages were stocked with juvenile Nile tilápia with average imúal weight of 17.59 ± 5.53 g and average total length of 9.63 ± 0.95. Arriving at the site and after acclimation, fish were counted, weighed in batches and stored in tanks at a density of 60 peixes/m2, for a total of 960 fish distributed in 16 tanks. During cultivation, the following variables were analyzed water quality: transparency, dissolved oxygen, pH and temperature. We studied the growth performance: weight gain (WG), relative weight gain, gain in length (CG). The experimental design was completely randomized (CRD), in a split plot design in time (Split Plot in Time), where four treatments (100%, 80%, 70% and 50%) with four replicates each, totaling sixteen plots. The results showed that the physicalchemical parameters of water samples were within acceptable leveis. We observed the best performance index of relative weight gain was observed in treatment 80% and already the treatment of 100% had the worst performance. Water temperature values were similar for ali treatments. The worst relative weight gain (%) was in the treatment of 100% of incoming light (290.20%), although the treatment of 80% was more satisfactory because it had the best relative weight gain (442.29%).

Submitted by Liliane Ferreira (ljuvencia30@gmail.com) on 2018-09-21T11:57:23Z No. of bitstreams: 2 Disssertação - Ana Karoline Ferreira dos Santos - 2018.pdf: 13536231 bytes, checksum: 731b9fe534131c66acaf4ffedc58a615 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2018-09-24T11:08:01Z (GMT) No. of bitstreams: 2 Disssertação - Ana Karoline Ferreira dos Santos - 2018.pdf: 13536231 bytes, checksum: 731b9fe534131c66acaf4ffedc58a615 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2018-09-24T11:08:01Z (GMT). No. of bitstreams: 2 Disssertação - Ana Karoline Ferreira dos Santos - 2018.pdf: 13536231 bytes, checksum: 731b9fe534131c66acaf4ffedc58a615 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2018-08-20 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES / The solar energy that arrives at the Earth surface is an essential phenomenon for the life maintenance and the knowledge of its dynamics contributes to the understanding of complex processes, like the water spectral behavior. Among the main properties that interact with electromagnetic radiation are chlorophyll "a" and suspended solids. In this sense, this study aims to analyze the influence of the Active Optical Components on the water spectral behavior of reservoirs of the Barra dos Coqueiros hydroelectric power plant (GO) at 40 data collection sites. To obtain the data, four field campaigns were carried out on February 10, 2016 and January 28, 2017 (higher precipitation) and 04 / August 4, 2016 and July 7, 2017 (lower precipitation). The spectral data were obtained using a portable spectroradiometer, FieldSpec® Hand Held model in spectral bands of 400 nm to 900 nm. The analysis of chlorophyll "a" followed the proposal of Mackinney (1941), suspended solid data followed Wetzel and Likens (1991; 2000) and APHA (1998; 2005) and the water transparency was according to Esteves (1998) and Peixoto et al. (2015). The analysis of the main information of the water bi-directional reflectance spectra occurred with the application of techniques: continuous removal, 1st and 2nd derivative, cluster analysis, surface reflectance extraction from the Landsat 8-OLI satellite image. Based on the results, there were several factors of performance in the spectral behavior of waters in Barra dos Coqueiros HPP reservoir, such as the climatic seasonality (rainy and dry periods) and the types of land use and occupation, due to the different agricultural production. These aspects favor higher values of suspended solids and chlorophyll a and lower water transparency in fields work of February/2016 and January 2017, resulting in higher reflectance in green (500 nm to 600 nm ) and red (600 nm at 700 nm) spectral ranges. In the field studies conducted in August/2016 and July/2017, reflectance influenced by suspended solids and chlorophyll a was low and the water transparency showed higher depth due to the higher levels of absorption of electromagnetic radiation in the water in the spectral bands of blue (400 nm to 500 nm) and infrared (700 nm to 900 nm). Thus, the geotechnologies applied in this study evidenced several possibilities for interpretation of water spectral information. / A energia solar que chega à superfície da Terra representa um fenômeno essencial para a manutenção da vida e o conhecimento de sua dinâmica contribui para a compreensão de processos complexos, como o comportamento espectral da água. Dentre as principais propriedades que interagem com radiação eletromagnética encontram-se a clorofila-a os sólidos em suspensão. Nessa perspectiva, o presente estudo tem por objetivo analisar em 40 pontos de coleta de dados, a influência dos Componentes Opticamentes Ativos no comportamento espectral das águas, do reservatório da Usina hidrelétrica Barra dos Coqueiros (GO). Para obtenção dos dados, foram realizadas quatro campanhas de campo, as quais ocorreram em 10/fevereiro/2016 e 28/janeiro/2017 (maiores precipitações) e 04/agosto/2016 e 07/julho/2017 (menores precipitação). Os dados espectrais, foram obtidos por meio de espectrorradiômetro portátil, modelo FieldSpec® Hand Held. A análise de clorofila-aseguiu a proposta de Mackinney (1941), os dados de sólidos em suspensão a metodologia de Wetzel e Likens (1991; 2000) e APHA (1998; 2005) e a transparência da água realizada conforme Esteves (1998) e Peixoto et al. (2015). O diagnóstico das principais informações dos espectros de reflectância da água ocorreu com aplicação de técnicas: remoção do contínuo, derivada, análise cluster, extração da reflectância de superfície da imagem do satélite Landsat 8-OLI. Com base nos resultados, verificou-se diversos fatores de atuação no comportamento espectral das águas do reservatório da UHE Barra dos Coqueiros (GO), como a sazonalidade climática (período chuvoso e seco) e as formas do uso e ocupação da terra, distintas pelas produções agrícolas, aspectos esses, que favorecem nos campos de fevereiro/2016 e janeiro/2017, valores mais elevados de sólidos em suspensão e clorofila-a menores transparência da água, resultando em maiores reflectância nas faixas espectrais do verde (500 nm a 600 nm) e vermelho (600 nm a 700 nm). Nos campos realizados em agosto/2016 e julho/2017, os níveis da reflectância influenciados por sólidos em suspensão e clorofila-asão baixas e as transparências da água apresentou maiores profundidade, devido a maior absorção da radiação eletromagnética na água nas bandas espectrais do azul (400 nm a 500 nm) e infravermelho (700 nm a 900 nm). Desse modo, as geotecnologias aplicadas neste estudo, evidenciaram diversas possiblidades para interpretação da informação espectral da água.

Submitted by Franciele Moreira (francielemoreyra@gmail.com) on 2018-09-24T14:05:33Z No. of bitstreams: 2 Dissertação - Ana Karoline Ferreirados Santos - 2018.pdf: 13498793 bytes, checksum: 7d65eb53a37966540fdeaf20e235927d (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2018-09-24T15:15:23Z (GMT) No. of bitstreams: 2 Dissertação - Ana Karoline Ferreirados Santos - 2018.pdf: 13498793 bytes, checksum: 7d65eb53a37966540fdeaf20e235927d (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2018-09-24T15:15:23Z (GMT). No. of bitstreams: 2 Dissertação - Ana Karoline Ferreirados Santos - 2018.pdf: 13498793 bytes, checksum: 7d65eb53a37966540fdeaf20e235927d (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2018-08-20 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES / The solar energy that arrives at the Earth surface is an essential phenomenon for the life maintenance and the knowledge of its dynamics contributes to the understanding of complex processes, like the water spectral behavior. Among the main properties that interact with electromagnetic radiation are chlorophyll "a" and suspended solids. In this sense, this study aims to analyze the influence of the Active Optical Components on the water spectral behavior of reservoirs of the Barra dos Coqueiros hydroelectric power plant (GO) at 40 data collection sites. To obtain the data, four field campaigns were carried out on February 10, 2016 and January 28, 2017 (higher precipitation) and 04 / August 4, 2016 and July 7, 2017 (lower precipitation). The spectral data were obtained using a portable spectroradiometer, FieldSpec® Hand Held model in spectral bands of 400 nm to 900 nm. The analysis of chlorophyll "a" followed the proposal of Mackinney (1941), suspended solid data followed Wetzel and Likens (1991; 2000) and APHA (1998; 2005) and the water transparency was according to Esteves (1998) and Peixoto et al. (2015). The analysis of the main information of the water bi-directional reflectance spectra occurred with the application of techniques: continuous removal, 1st and 2nd derivative, cluster analysis, surface reflectance extraction from the Landsat 8-OLI satellite image. Based on the results, there were several factors of performance in the spectral behavior of waters in Barra dos Coqueiros HPP reservoir, such as the climatic seasonality (rainy and dry periods) and the types of land use and occupation, due to the different agricultural production. These aspects favor higher values of suspended solids and chlorophyll a and lower water transparency in fields work of February/2016 and January 2017, resulting in higher reflectance in green (500 nm to 600 nm ) and red (600 nm at 700 nm) spectral ranges. In the field studies conducted in August/2016 and July/2017, reflectance influenced by suspended solids and chlorophyll a was low and the water transparency showed higher depth due to the higher levels of absorption of electromagnetic radiation in the water in the spectral bands of blue (400 nm to 500 nm) and infrared (700 nm to 900 nm). Thus, the geotechnologies applied in this study evidenced several possibilities for interpretation of water spectral information. / A energia solar que chega à superfície da Terra representa um fenômeno essencial para a manutenção da vida e o conhecimento de sua dinâmica contribui para a compreensão de processos complexos, como o comportamento espectral da água. Dentre as principais propriedades que interagem com radiação eletromagnética encontram-se a clorofila-a os sólidos em suspensão. Nessa perspectiva, o presente estudo tem por objetivo analisar em 40 pontos de coleta de dados, a influência dos Componentes Opticamentes Ativos no comportamento espectral das águas, do reservatório da Usina hidrelétrica Barra dos Coqueiros (GO). Para obtenção dos dados, foram realizadas quatro campanhas de campo, as quais ocorreram em 10/fevereiro/2016 e 28/janeiro/2017 (maiores precipitações) e 04/agosto/2016 e 07/julho/2017 (menores precipitação). Os dados espectrais, foram obtidos por meio de espectrorradiômetro portátil, modelo FieldSpec® Hand Held. A análise de clorofila-aseguiu a proposta de Mackinney (1941), os dados de sólidos em suspensão a metodologia de Wetzel e Likens (1991; 2000) e APHA (1998; 2005) e a transparência da água realizada conforme Esteves (1998) e Peixoto et al. (2015). O diagnóstico das principais informações dos espectros de reflectância da água ocorreu com aplicação de técnicas: remoção do contínuo, derivada, análise cluster, extração da reflectância de superfície da imagem do satélite Landsat 8-OLI. Com base nos resultados, verificou-se diversos fatores de atuação no comportamento espectral das águas do reservatório da UHE Barra dos Coqueiros (GO), como a sazonalidade climática (período chuvoso e seco) e as formas do uso e ocupação da terra, distintas pelas produções agrícolas, aspectos esses, que favorecem nos campos de fevereiro/2016 e janeiro/2017, valores mais elevados de sólidos em suspensão e clorofila-a menores transparência da água, resultando em maiores reflectância nas faixas espectrais do verde (500 nm a 600 nm) e vermelho (600 nm a 700 nm). Nos campos realizados em agosto/2016 e julho/2017, os níveis da reflectância influenciados por sólidos em suspensão e clorofila-asão baixas e as transparências da água apresentou maiores profundidade, devido a maior absorção da radiação eletromagnética na água nas bandas espectrais do azul (400 nm a 500 nm) e infravermelho (700 nm a 900 nm). Desse modo, as geotecnologias aplicadas neste estudo, evidenciaram diversas possiblidades para interpretação da informação espectral da água.

This thesis evaluates transparency in the context of water utilities’ regulation by comparing legal frameworks in three jurisdictions: Victoria (Australia), England (United Kingdom) and Jakarta (Indonesia). Each of these jurisdictions is selected because of their particular ownership and regulatory model. The thesis analyses whether specific ownership or regulatory models will have implications for transparency. The terms “transparency” and “water utilities’ regulation” are first defined and form the thesis’ analytical framework. This is then applied against the three jurisdictions compared. By evaluating each of the three jurisdictions, the thesis expects to provide explanation on how transparency is enabled or inhibited by the legal frameworks. The thesis recommends a solution by comparing the three jurisdictions and generating “lessons learned”.

Floodplain lakes are strongly regulated by river connectivity because floodwaters exert strong influence on the water balance, the physical, chemical and biological limnological conditions, and the influx of contaminants. The Peace-Athabasca Delta (PAD) in northern Alberta (Canada) is a hydrologically complex landscape and is an important node in the upper Mackenzie River Drainage Basin. The ecological integrity of the PAD is potentially threatened by multiple environmental stressors, yet our understanding of the hydroecology of this large floodplain remains underdeveloped. Indeed, ever since the planning and construction of the WAC Bennett Dam (1960s), concerns have grown over the effects of upstream human activities on the lakes of the PAD. More recently, concerns over the health of the PAD have intensified and come to the fore of national and international dialogue due to water abstraction and mining and processing activities by the rapidly expanding oil sands industry centred in Fort McMurray Alberta. Currently, widespread perception is that upstream human activities have reduced water levels and frequency of flooding at the PAD, which have lowered nutrient availability and productivity of perched basin lakes, and have increased supply of pollutants from oil sands. However, these perceptions remain based on insufficient knowledge of pre-impact conditions and natural variability. Current and past relations between hydrology and limnology of PAD lakes are mostly undocumented, particularly during the important spring freshet period when the effects of river flood waters are strongest. Similarly, knowledge of the deposition of oil-sands- related contaminants in the PAD remains insufficient to determine whether anthropogenic activities have increased the deposition of important oil-sands-related contaminants such as polycyclic aromatic compounds (PACs) relative to natural processes. Such knowledge gaps must be filled to achieve effective monitoring, policy and governance concerning impacts of industrial development and the protection of human and environmental health within the PAD and Mackenzie drainage basin. This thesis examines the effects of river flooding (and the lack of) on water clarity, nutrients, chemistry, phytoplankton abundance, epiphyton community composition and the deposition of polycyclic aromatic compounds (PACs) in lakes of the Peace-Athabasca Delta. To determine the role of flooding on contemporary epiphytic diatom communities (an abundant and diverse guild of primary producers in PAD lakes), a field experiment was conducted examining the community composition and abundance of epiphytic diatoms in four PAD lakes. Two of these four lakes had received floodwaters that spring and two had not. Epiphytic diatom communities in each lake were sampled during the peak macrophyte biomass period (summer) from two macrophyte taxa (Potamogeton zosteriformis, P. perfoliatus var. richardsonii) and from polypropylene artificial substrates previously deployed that spring. A two-way analysis of similarity (ANOSIM) test identified that epiphytic diatom community composition differed between lakes that flooded and those that did not flood. From the use of similarity percentage (SIMPER) analysis, diatom taxa were identified that discriminate between flooded and non-flooded lakes. The relative abundance of ‘strong flood indicator taxa’ was used to construct an event-scale flood record spanning the past ~180 years using analyses of sedimentary diatom assemblages from a closed-drainage lake (PAD 5). Results were verified by close agreement with an independent paleo-flood record from a nearby flood-prone oxbow lake (PAD 54) and historical records. Comparison of epiphytic diatoms in flooded and non-flooded lakes in this study provides a promising approach to detect changes in flood frequency, and may have applications for reconstructing other pulse-type disturbances such as hurricanes and pollutant spills. Additionally, this study demonstrates that artificial substrates can provide an effective bio-monitoring tool for lakes of the PAD and elsewhere. To improve our understanding of the hydrolimnological responses of lake in the PAD to flooding, repeated measurements over three years (2003-05) were made on a series of lakes along a hydrological gradient. This allowed the role of river flooding to be characterized on limnological conditions of lakes and to identify the patterns and timescales of limnological change after flooding. River floodwaters elevate lake water concentrations of suspended sediment, total phosphorus (TP), SO4 and dissolved Si (DSi), and reduce concentrations of total Kjeldahl nitrogen (TKN), DOC and most ions. River flooding increases limnological homogeneity among lakes, because post-flood conditions are strongly affected by the river water properties. After floodwaters recede, limnological conditions become more heterogeneous among lakes in response to diversity of local basin influences (geology, slope, vegetation, depth, fetch, and biological communities and processes), and limnological changes occur at two distinct timescales. In the weeks to months after flooding, water clarity increases as suspended sediments and TP settle out of the water column. In the absence of flooding for many years to decades, evaporative concentration leads to an increase in most nutrients (TKN, inorganic N, and dissolved P), DOC and ions. Contrary to a prevailing paradigm, these results suggest that regular flooding is not required to maintain high nutrient concentrations. In light of anticipated declines in river discharge, limnological conditions in the southern Athabasca sector will become increasingly less dominated by the short-term effects of flooding, and resemble nutrient- and solute-rich lakes in the northern Peace sector that are infrequently flooded. To determine the roles of the Athabasca River and atmospheric transport as vectors for the deposition of PACs in the PAD, sediment cores spanning the last ~200 years were collected from three lakes within the delta. A closed-drainage basin elevated well above the floodplain (PAD 18) was selected to determine temporal patterns of change in PAC concentration due to atmospheric deposition and within-basin production of PACs. Known patterns of paleohydrological changes at the other two lakes (PAD 23 and 31) were used to assess the role of the Athabasca River in delivering PACs to the Athabasca Delta during the ~200 year. Well- dated sediment core samples were analysed for 52 alkylated and non-alkylated PACs (method EPA 3540/8270-GC/MS). Sediments deposited in the non-flood prone lake (PAD 18) contained lower concentrations of total PACs compared to sediments deposited during flood-prone periods in the other study lakes, and were dominated by PACs of a pyrogenic rather than bitumen origin. Multivariate analysis of similarity tests identified that the composition of PACs differs between sediments deposited during not flood-prone and flood-prone periods. Subsequent Similarities Percentage (SIMPER) analysis was used and identified seven PACs that are preferentially deposited during flood-prone periods. These seven PACs are bitumen-associated, river-transported and account for 51% of the total PACs found in oil-sands sediment. At PAD 31, which has been flood-prone both before and since onset of Athabasca oil sands development, identified no measureable differences in both the proportion and concentration of the river-transported indicator PACs in sediments deposited pre-1940s versus post-1982. Our findings suggest that natural erosion of exposed bitumen along the banks of the Athabasca River and its tributaries is the main process delivering PACs to the Athabasca Delta, and that the spring freshet is a key period for contaminant mobilization and transport. Such key baseline environmental information is essential for informed management of natural resources and human-health concerns by provincial and federal regulatory agencies and industry, and for designing effective long-term monitoring and surveillance programs for the lower Athabasca River watershed in the face of future oil sands development. Further monitoring activities and additional paleolimnological studies of the depositional history of PACs and other oil-sands- and non-oil-sands-related contaminants is strongly recommended. Overall, results of this research identify that river flooding exerts strong control on physical, chemical and biological conditions of lakes within the PAD. However, contrary to prevailing paradigms, the PAD is not a landscape that has been adversely and permanently affected by regulation of the Peace River and industrial development of the oil sands along the Athabasca River. Instead, data from contemporary and paleolimnological studies identify that natural processes continue to dominate the delivery of water and contaminants to the delta. Regular and frequent flooding is not essential to maintain the supply of nutrients and productivity of delta lakes, which has been a widespread paradigm that developed in the absence of objective scientific data. Instead, nutrient concentrations rise over years to decades after flooding and lake productivity increases. During the thesis research, novel approaches were developed and demonstrated to be effective. Namely, new artificial substrate samplers were designed for aquatic biomonitoring that accrue periphyton and can identify the occurrence of flood events. Also, paleolimnological methods were employed to characterize the composition and concentration of PACs supplied by natural processes prior to oil sands industrial activity, which serves as an important benchmark for assessing industrial impacts. These are effective methods that can be employed to improve monitoring programs and scientific understanding of the factors affecting this world-renowned landscape, as well as floodplains elsewhere.

Made available in DSpace on 2014-07-29T14:39:37Z (GMT). No. of bitstreams: 1 Dissertacao Celso de Carvalho Braga.pdf: 3312309 bytes, checksum: f978b2519d34cde7af31bff47e8526ea (MD5) Previous issue date: 2012-03-01 / The construction of reservoirs for hydroelectric generates various environmental impacts, for instance, changes in the displacement and the concentration of suspended solids, thus causing changes in the fauna and flora of the water. The survey of suspended solids in a determined watershed is important to make correct decisions regarding the planning for a bowl, because the amount of solids is directly related to the land use. The problems caused by suspended solids include erosion, transport, deposition and compaction, in addition the suspended solids impair the quality of water for human consumption. This study aimed to analyze the spatial and temporal distribution of the concentration of suspended solids (CSS) in the main source of the lake in Barra dos Coqueiros and its influence on the life cycle of the reservoir from March 2011 to August 2011. To achieve the proposed goals, it was used methods such as calculating the concentration of suspended solids according to the proposal of Wetzel and Likens (1991), checking the levels of turbidity and water clarity in accordance with the proposal to Esteves (1998) and Tundisi (2008), calculating the flow of the sources of water by the method of floats as proposed by Ramos and Oliveira (2003), Palhares (2007), and calculating the total solid discharge of the main sources of water (of the) using simplified method of Colby (1964) that takes into consideration: liquid discharge, average speed, average depth, width and cross section measured concentration of suspended solids. According to the data, we reached the following conclusion: the concentration of suspended solids is well related to the data turbidity and water transparency. In the data collection reservoir of the rainy season, the concentration of suspended solids ranged from 7,5 to 30,5 mgL-1 and greater than the collection of the dry period, which ranged from 0,25 to 7,5 mgL-1. The same thing happens to the water transparency using a Secchi disk that ranged from 0,16 to 0,30 meters in the rainy season and 1,40 to 3,50 meters in the dry season. As for turbidity, the indices found shows that the reflectance of light in a rainy period ranged from 51 to 72 NTU, whereas the dry period ranged from 0 to 3,7 NTU. According to the evaluation of the spatial and temporal distribution of suspended solids concentration of the main sources of water in the reservoir of Barra dos Coqueiros, the main lake stands out among the sources analyzed, due to the higher concentration of suspended solids, ranging from 2,5 mgL-1 in the dry season to 14,5 mgL-1 in the rainy season. / A construção de reservatórios para usinas hidrelétricas geram impactos ambientais diversos, como, por exemplo, mudanças no deslocamento e concentração de sólidos em suspensão, ocasionando assim mudanças na fauna e flora aquáticas. O estudo dos sólidos em suspensão de uma determinada bacia hidrográfica é importante para que se possam tomar decisões corretas quanto ao planejamento de atividades de uma bacia, pois a quantidade de sólidos está diretamente associada ao uso da terra. Os problemas gerados pelos sólidos em suspensão vão desde a erosão, transporte, deposição e compactação, além de que os sólidos em suspensão prejudicam a qualidade da água para o consumo humano. O presente trabalho teve por objetivo analisar a distribuição espacial e temporal da concentração de sólidos em suspensão (CSS) nos principais afluentes e lago da UHE Barra dos Coqueiros, e sua influência na vida útil do reservatório no período de março a agosto de 2011. Os métodos utilizados para alcançar os objetivos propostos foram: calcular a concentração de sólidos em suspensão de acordo com a proposta de WETZEL E LIKENS (1991), verificar os níveis de turbidez e transparência da água de acordo com a proposta de ESTEVES (1998) e TUNDISI (2008), calcular a vazão dos afluentes pelo método de flutuadores, de acordo com a proposta de RAMOS e OLIVEIRA (2003), PALHARES (2007), e calcular a descarga sólida total dos principais afluentes pelo método simplificado de COLBY (1964) que leva em consideração: descarga líquida, velocidade média, profundidade média, largura da seção transversal e concentração medida de sólidos em suspensão. De acordo com os dados obtidos, chegou-se à seguinte conclusão: que a concentração de sólidos em suspensão tem boa relação com os dados de turbidez e transparência da água. Na coleta de dados do reservatório do período chuvoso, a concentração de sólidos em suspensão variou de 7,5 a 30,5 mgL-1, sendo maior que na coleta do período seco, que variou de 0,25 a 7,5 mgL-1. O mesmo acontece com transparência de água utilizando o disco de Secchi que variou de 0,16 a 0,30 metros no período chuvoso e de 1,40 a 3,50 metros no período seco. Quanto à turbidez, os índices encontrados mostram que a refletância da luz no período chuvoso variou de 51 a 72 NTU, enquanto no período seco variou de 0 a 3,7 NTU. Quanto à avaliação da distribuição espacial e temporal da concentração de sólidos em suspensão dos principais afluentes do reservatório da UHE Barra dos Coqueiros o Córrego Matriz se destaca entre os afluentes analisados, por apresentar maiores concentrações de sólidos em suspensão, variando de 2,5 mgL-1 no período seco a 14,5 mgL-1 no período chuvoso.