Literatura científica selecionada sobre o tema "Riverine imputs"
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Artigos de revistas sobre o assunto "Riverine imputs"
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Korahiré, Joël Awouhidia. "Dynamiques socioéconomiques dans les villages riverains au ranch de gibier de Nazinga au Burkina Faso". Articles 40, n.º 2 (24 de março de 2011): 53–70. http://dx.doi.org/10.7202/1001388ar.
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Afin d’inciter les populations riveraines à la conservation des ressources fauniques, le Ranch de Gibier de Nazinga a adopté un modèle de gestion pour l’amélioration de leur condition de vie. Le but de cette recherche est d’étudier l’environnement socioéconomique dans lequel évoluent ces populations depuis la création dudit ranch. En utilisant principalement une démarche qualitative, la réalisation de cet objectif se fait en deux temps, soit primo en examinant les changements structurels socioéconomiques engendrés par le ranch dans la zone d’étude, puis secundo, en identifiant les impacts socioéconomiques du ranch et en explorant les perceptions des riverains sur ces impacts. Les résultats indiquent d’importantes améliorations sur les plans institutionnel et économique. Cependant, l’insuffisance d’infrastructures sociales de base et certains dysfonctionnements observés rendent les riverains quelque peu sceptiques et menacent la durabilité du modèle de gestion du ranch. En outre, il existe un conflit latent résultant d’une crise de confiance entre la direction du ranch et les populations riveraines.
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Langerwisch, F., A. Walz, A. Rammig, B. Tietjen, K. Thonicke e W. Cramer. "Deforestation in Amazonia impacts riverine carbon dynamics". Earth System Dynamics Discussions 6, n.º 2 (22 de outubro de 2015): 2101–36. http://dx.doi.org/10.5194/esdd-6-2101-2015.
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Abstract. Fluxes of organic and inorganic carbon within the Amazon basin are considerably controlled by annual flooding, which triggers the export of terrigenous organic material to the river and ultimately to the Atlantic Ocean. The amount of carbon imported to the river and the further conversion, transport and export of it, depend on terrestrial productivity and discharge, as well as temperature and atmospheric CO2. Both terrestrial productivity and discharge are influenced by climate and land use change. To assess the impact of these changes on the riverine carbon dynamics, the coupled model system of LPJmL and RivCM (Langerwisch et al., 2015) has been used. Vegetation dynamics (in LPJmL) as well as export and conversion of terrigenous carbon to and within the river (RivCM) are included. The model system has been applied for the years 1901 to 2099 under two deforestation scenarios and with climate forcing of three SRES emission scenarios, each for five climate models. The results suggest that, following deforestation, riverine particulate and dissolved organic carbon will strongly decrease by up to 90 % until the end of the current century. In parallel, discharge increases, leading to roughly unchanged net carbon transport during the first decades of the century, as long as a sufficient area is still forested. During the following decades the amount of transported carbon will decrease drastically. In contrast to the riverine organic carbon, the amount of riverine inorganic carbon is only determined by climate change forcing, namely increased temperature and atmospheric CO2 concentration. Mainly due to the higher atmospheric CO2 it leads to an increase in riverine inorganic carbon by up to 20 % (SRES A2). The changes in riverine carbon fluxes have direct effects on the export of carbon, either to the atmosphere via outgassing, or to the Atlantic Ocean via discharge. Basin-wide the outgassed carbon will increase slightly, but can be regionally reduced by up to 60 % due to deforestation. The discharge of organic carbon to the ocean will be reduced by about 40 % under the most severe deforestation and climate change scenario. The changes would have local and regional consequences on the carbon balance and habitat characteristics in the Amazon basin itself but also in the adjacent Atlantic Ocean.
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Fu, Yutao, Richard Bellerby, Hongyu Ji, Shenliang Chen, Yaoshen Fan e Peng Li. "Impacts of Riverine Floods on Morphodynamics in the Yellow River Delta". Water 15, n.º 8 (17 de abril de 2023): 1568. http://dx.doi.org/10.3390/w15081568.
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The geomorphological stability and ecological environment of megadeltas worldwide are of vital importance for their sustainable development. Deltaic hydro-morphodynamics is extremely sensitive to high riverine flow due to reduced sediment supply. However, the morphological evolution and response of deltas under high riverine flow have remained inadequately quantified. As one of the typical megadeltas, the Yellow River Delta (YRD), is becoming increasingly sensitive to environmental changes and intensified human interventions. In this study, a numerical model and field data were used to investigate the hydrodynamic changes and morphodynamic evolution induced by extreme river discharge in the YRD. The numerical experiments with different runoff scenarios reveal that high-energy riverine floods can cause significant hydrodynamic changes in bed shear stresses, water levels, and flow velocities, particularly in the abandoned river mouth. Moreover, it enhances the ebb-dominated tidal asymmetry, which considerably intensifies fluvial sediment resuspension and transport processes. The results also show high-energy riverine floods in the flood seasons trigger severe erosion in the Yellow River submerged delta, with a net erosion volume reaching −0.07 × 108 m3/year. The hydrodynamic increment in the abandoned river mouth is more significant, and therefore, severe erosion occurs, with the maximum erosion thickness reaching 7 m. These findings highlight the role of high riverine floods on the hydro-sediment dynamics of large river deltas under a sediment starvation condition.
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Langerwisch, Fanny, Ariane Walz, Anja Rammig, Britta Tietjen, Kirsten Thonicke e Wolfgang Cramer. "Deforestation in Amazonia impacts riverine carbon dynamics". Earth System Dynamics 7, n.º 4 (9 de dezembro de 2016): 953–68. http://dx.doi.org/10.5194/esd-7-953-2016.
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Abstract. Fluxes of organic and inorganic carbon within the Amazon basin are considerably controlled by annual flooding, which triggers the export of terrigenous organic material to the river and ultimately to the Atlantic Ocean. The amount of carbon imported to the river and the further conversion, transport and export of it depend on temperature, atmospheric CO2, terrestrial productivity and carbon storage, as well as discharge. Both terrestrial productivity and discharge are influenced by climate and land use change. The coupled LPJmL and RivCM model system (Langerwisch et al., 2016) has been applied to assess the combined impacts of climate and land use change on the Amazon riverine carbon dynamics. Vegetation dynamics (in LPJmL) as well as export and conversion of terrigenous carbon to and within the river (RivCM) are included. The model system has been applied for the years 1901 to 2099 under two deforestation scenarios and with climate forcing of three SRES emission scenarios, each for five climate models. We find that high deforestation (business-as-usual scenario) will strongly decrease (locally by up to 90 %) riverine particulate and dissolved organic carbon amount until the end of the current century. At the same time, increase in discharge leaves net carbon transport during the first decades of the century roughly unchanged only if a sufficient area is still forested. After 2050 the amount of transported carbon will decrease drastically. In contrast to that, increased temperature and atmospheric CO2 concentration determine the amount of riverine inorganic carbon stored in the Amazon basin. Higher atmospheric CO2 concentrations increase riverine inorganic carbon amount by up to 20 % (SRES A2). The changes in riverine carbon fluxes have direct effects on carbon export, either to the atmosphere via outgassing or to the Atlantic Ocean via discharge. The outgassed carbon will increase slightly in the Amazon basin, but can be regionally reduced by up to 60 % due to deforestation. The discharge of organic carbon to the ocean will be reduced by about 40 % under the most severe deforestation and climate change scenario. These changes would have local and regional consequences on the carbon balance and habitat characteristics in the Amazon basin itself as well as in the adjacent Atlantic Ocean.
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You, Yanbin, Zhenghui Xie, Binghao Jia, Yan Wang, Longhuan Wang, Ruichao Li, Heng Yan, Yuhang Tian e Si Chen. "Impacts of anthropogenic water regulation on global riverine dissolved organic carbon transport". Earth System Dynamics 14, n.º 5 (4 de setembro de 2023): 897–914. http://dx.doi.org/10.5194/esd-14-897-2023.
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Abstract. Anthropogenic water regulation activities, including reservoir interception, surface water withdrawal, and groundwater extraction, alter riverine hydrologic processes and affect dissolved organic carbon (DOC) export from land to rivers and oceans. In this study, schemes describing soil DOC leaching, riverine DOC transport, and anthropogenic water regulation were developed and incorporated into the Community Land Model 5.0 (CLM5.0) and the River Transport Model (RTM). Three simulations by the developed model were conducted on a global scale from 1981–2013 to investigate the impacts of anthropogenic water regulation on riverine DOC transport. The validation results showed that DOC exports simulated by the developed model were in good agreement with global river observations. The simulations showed that DOC transport in most rivers was mainly influenced by reservoir interception and surface water withdrawal, especially in central North America and eastern China. Four major rivers, including the Danube, Yangtze, Mississippi, and Ganges rivers, have experienced reduced riverine DOC flows due to intense water management, with the largest effect occurring in winter and early spring. In the Danube and Yangtze river basins, the impact in 2013 was 4 to 5 times greater than in 1981, with a retention efficiency of over 50 %. The Ob river basin was almost unaffected. The total impact of anthropogenic water regulation reduced global annual riverine DOC exports to the ocean by approximately 13.36 ± 2.45 Tg C yr−1, and this effect increased from 4.83 % to 6.20 % during 1981–2013, particularly in the Pacific and Atlantic oceans.
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Zhang, Yang, e Samsung Lim. "Drivers of Wildfire Occurrence Patterns in the Inland Riverine Environment of New South Wales, Australia". Forests 10, n.º 6 (24 de junho de 2019): 524. http://dx.doi.org/10.3390/f10060524.
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In the inland riverine environment of Australia, wildfires not only threaten human life and cause economic loss but also make distinctive impacts on the ecosystem (e.g., injuring or killing fire-sensitive wetland species such as the river red gum). Understanding the drivers of wildfire occurrence patterns in this particular environment is vital for fire-risk reduction and ecologically sustainable management. This study investigated patterns and driving factors of wildfire occurrence over the years from 2001 to 2016 and across the New South Wales side of the Riverina bioregion. Descriptive analyses were conducted for fires of different causes and that burned different vegetation types. Logistic regression models were developed by incorporating factors that provide information on weather, climate, fuel, topography and ignition sources. Analyses revealed that most fires occurred in summer, with human-caused fires primarily in spring and summer, and natural fires in summer. Summer was the most fire-prone season in forested wetlands, whereas fires in drylands mostly occurred during spring and summer. Fire probabilities were higher under severe weather conditions, in areas with higher annual rainfall, in forested wetlands and in areas with intermediate inundation frequencies. Special attention needs to be paid to the effects of vegetation type and inundation frequency on fire occurrence. Weather, climate&fuel and ignition sources were comparably important in explaining human-caused fire occurrence, whereas weather was more important than climate&fuel in explaining natural fire occurrence. Understandings obtained from this study can potentially support the planning of fire and forest management, as well as to supplement the relatively scarce knowledge on riverine wildfire occurrence.
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St-Laurent, Pierre, Marjorie A. M. Friedrichs, Raymond G. Najjar, Elizabeth H. Shadwick, Hanqin Tian e Yuanzhi Yao. "Relative impacts of global changes and regional watershed changes on the inorganic carbon balance of the Chesapeake Bay". Biogeosciences 17, n.º 14 (22 de julho de 2020): 3779–96. http://dx.doi.org/10.5194/bg-17-3779-2020.
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Abstract. The Chesapeake Bay is a large coastal-plain estuary that has experienced considerable anthropogenic change over the past century. At the regional scale, land-use change has doubled the nutrient input from rivers and led to an increase in riverine carbon and alkalinity. The bay has also experienced global changes, including the rise of atmospheric temperature and CO2. Here we seek to understand the relative impact of these changes on the inorganic carbon balance of the bay between the early 1900s and the early 2000s. We use a linked land–estuarine–ocean modeling system that includes both inorganic and organic carbon and nitrogen cycling. Sensitivity experiments are performed to isolate the effect of changes in (1) atmospheric CO2, (2) temperature, (3) riverine nitrogen loading and (4) riverine carbon and alkalinity loading. Specifically, we find that over the past century global changes have increased ingassing by roughly the same amount (∼30 Gg-C yr−1) as has the increased riverine loadings. While the former is due primarily to increases in atmospheric CO2, the latter results from increased net ecosystem production that enhances ingassing. Interestingly, these increases in ingassing are partially mitigated by increased temperatures and increased riverine carbon and alkalinity inputs, both of which enhance outgassing. Overall, the bay has evolved over the century to take up more atmospheric CO2 and produce more organic carbon. These results suggest that over the past century, changes in riverine nutrient loads have played an important role in altering coastal carbon budgets, but that ongoing global changes have also substantially affected coastal carbonate chemistry.
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White, Kathleen D., e Johnnie N. Moore. "Impacts of Dam Removal on Riverine Ice Regime". Journal of Cold Regions Engineering 16, n.º 1 (março de 2002): 2–16. http://dx.doi.org/10.1061/(asce)0887-381x(2002)16:1(2).
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Valle Junior, Renato F., Simone G. P. Varandas, Fernando A. L. Pacheco, Vítor R. Pereira, Cátia F. Santos, Rui M. V. Cortes e Luís F. Sanches Fernandes. "Impacts of land use conflicts on riverine ecosystems". Land Use Policy 43 (fevereiro de 2015): 48–62. http://dx.doi.org/10.1016/j.landusepol.2014.10.015.
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Zhou, Shuchan, Tao Tang, Naicheng Wu, Xiaocheng Fu e Qinghua Cai. "Impacts of a Small Dam on Riverine Zooplankton". International Review of Hydrobiology 93, n.º 3 (junho de 2008): 297–311. http://dx.doi.org/10.1002/iroh.200711038.
Texto completo da fonteTeses / dissertações sobre o assunto "Riverine imputs"
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Durrieu, Gael. "Apports fluviaux et atmosphériques d'éléments traces métalliques et métalloïdes en zone côtière méditerranéenne : cas de la rade de Toulon". Electronic Thesis or Diss., Toulon, 2022. http://www.theses.fr/2022TOUL0015.
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Les zones côtières représentent un enjeu majeur en termes d’activités économiques et de préservation d’un bon état chimique et écologique du milieu naturel. Si à l’échelle globale (mer ou océan) les flux de contaminants notamment les éléments traces métalliques et métalloïdes (ETMM) sont relativement bien étudiés et décrits, ce n’est pas le cas des zones plus enclavées à une échelle plus locale. La rade de Toulon qui possède une morphologie semi-fermée est entourée d’une métropole importante (450 000 habitants) avec une forte activité anthropique (premier port militaire en France, ports civils, transport de passagers, aquaculture, …). Ces activités présentes et passées comme la deuxième guerre mondiale, ont conduit à une forte contamination sédimentaire ainsi qu’un fort gradient de concentrations en ETMM entre le Sud de la grande rade, connecté à la mer Méditerranée, et les parties les plus enclavées de la petite rade. Dans ce contexte de zone côtière contaminée, l’objectif de ce travail est d’évaluer la contribution des apports fluviaux et atmosphériques en ETMM à la rade de Toulon. Le mode d’échantillonnage proposé associant des capteurs de terrain, des pièges à particules et des prélèvements ponctuels différenciés entre l’étiage et la crue ont permis d’obtenir une chronique d’apports en ETMM prenant en compte la variabilité météorologique. Les résultats montrent que les apports en ETMM par les rivières (Las et Eygoutier) sont prépondérants durant les crues et dans la fraction particulaire et, sont plus particulièrement préoccupant pour le cuivre et le zinc qui dépassent les seuils réglementaires. Dans le Las, l’apport prépondérant reste cependant le cuivre dissous durant les crues. Dans l’Eygoutier, les valeurs obtenues sont inférieures aux mesures précédemment réalisées en 2004. Les apports en étiage sont largement minoritaires et des teneurs élevées en cadmium et mercure dans les particules ont été mesurées sans pouvoir identifier leur source. Les apports atmosphériques en ETMM sont dominés par la fraction particulaire avec des teneurs dépassant les seuils réglementaires d’un facteur 2 à 4 en cuivre, plomb et zinc. A l’échelle de la rade, les apports fluviaux restent supérieurs aux apports atmosphériques pour tous les ETMM. En faisant un bilan sur l’ensemble de la rade et en prenant en compte les autres sources existantes (ports, ruissellement, stations d’épuration, diffusion sédimentaire), la contribution des apports fluviaux et atmosphériques est estimée à 4 % pour le mercure, autour de 30 % pour le cuivre et le cadmium et près de 70 % pour le plomb et le chrome. Le bilan des flux d’ETMM dans la rade conduit à décrire la rade comme une source de contamination pour la mer Méditerranée. Ceci est confirmé par l’export net calculé pour le plomb, le mercure ou le cadmium tandis que pour le cuivre et le nickel des sources manquantes restent à être déterminées pour confirmer l’hypothèse. Pour le zinc et l’arsenic, la trop grande variabilité empêche de conclure car, ces estimations nécessitent d’être affinéesCoastal areas represent a major issue in terms of economic activities and preservation of a good chemical and ecological status of the natural environment. If on a global scale (sea or ocean) the flow of contaminants, especially trace metals and metalloids (TMM) are relatively well studied and described, this is not the case for more enclosed areas on a more local scale. The Toulon Bay, which has a semi-closed morphology, is surrounded by a large urban area (450 000 inhabitants) with a strong anthropic activity (first military port in France, civil ports, passenger transport, aquaculture, ...). These present and past activities, such as the Second World War, have led to a strong sedimentary contamination as well as a strong gradient of concentrations in TMM between the South of the large bay, connected to the Mediterranean Sea, and the most enclosed parts of the small bay. In this context of contaminated coastal zone, the objective of this work is to evaluate the contribution of the fluvial and atmospheric contributions in TMM to the Toulon Bay. The proposed sampling method associating field sensors, particle traps and punctual sampling differentiated between base flow and flood allowed to obtain a chronicle of TMM inputs considering the meteorological variability. The results show that the inputs of TMM by the rivers (Las and Eygoutier) are preponderant during floods and in the particulate fraction and are more particularly worrying for copper and zinc which exceed the regulatory thresholds. In the Las, the preponderant contribution remains however the dissolved copper during the flood. In the Eygoutier, the values obtained are lower than the measurements previously carried out in 2004. Base flow inputs are largely in the minority and high levels of cadmium and mercury in the particles were measured without being able to identify their source. Atmospheric inputs of TMM are dominated by the particulate fraction with levels exceeding the regulatory thresholds by a factor of 2 to 4 for copper, lead and zinc. At the bay scale, river inputs remain higher than atmospheric inputs for all the TMM. By making a balance on the whole of the bay and by considering the other existing sources (ports, runoff, wastewater treatment plant, sedimentary diffusion), the contribution of river and atmospheric inputs is estimated at 4% for mercury, around 30% for copper and cadmium and nearly 70% for lead and chromium. The balance of TMM inputs in the bay leads to describe the bay as a source of contamination for the Mediterranean Sea. This is confirmed by the net export calculated for lead, mercury, and cadmium, while for copper and nickel missing sources remain to be determined to confirm the hypothesis. For zinc and arsenic, too much variability prevents conclusions being drawn, and these estimates need to be refined
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Qu, Yueming [Verfasser]. "Assessing potential impacts of multiple stressors on riverine phytoplankton community by integrated models / Yueming Qu". Kiel : Universitätsbibliothek Kiel, 2019. http://d-nb.info/1193491460/34.
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Wong, Sze-chung Coby, e 黃詩頌. "Trace metal contamination of the riverine environment in Guiyu, China: the impacts of primitive e-wastedisposal". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B4308526X.
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Wong, Sze-chung Coby. "Trace metal contamination of the riverine environment in Guiyu, China : the impacts of primitive e-waste disposal /". Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B4308526X.
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Wilson, Benjamin Richard. "Improving techniques for quantifying the potential impacts of cormorants (Phalacrocorax carbo L.) and goosanders (Mergus merganser L.) on stillwater and riverine fisheries". Thesis, Liverpool John Moores University, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.421396.
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Turnell, Mariana Vieira. "Assembleias de peixes como parâmetro para avaliação de impactos ambientais na bacia do Rio Gramame- Paraíba e sua importância para as comunidades ribeirinhas". Universidade Federal da Paraíba, 2012. http://tede.biblioteca.ufpb.br:8080/handle/tede/4574.
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Previous issue date: 2012-02-27Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES
Due to anthropogenic activities, aquatic ecosystems are being rapidly modified in the entire world. The negative impact of pollutants, changes in the hydrology of the basin and changes in habitat, or introduction of exotic species, among others, result in the loss of water quality and difficulty in maintaining the integrity of these ecosystems. These changes, significantly affect the fish populations, causing a reduction in availability or even the disappearance of species that are not tolerant to the new environmental conditions. Consequently, fishermen who depend on resources from the aquatic environment can no longer subsist on fishing, which contributes to the loss of empiric knowledge and also in quality of life. The Gramame River, located in the state of Paraiba, Brazil, drains suburban areas of the region of João Pessoa, including its industrial district. As a result it receives a large amount of pollutants, particularly over the past 20 years, in addition to domestic sewage and agricultural pesticides, compounded by the introduction of exotic species. Upstream, near the industrial district, the river is surrounded by areas of sugar cane plantation, without riparian vegetation in most of its course. Coastal communities, residents in the water basin for decades, accompanied the whole process of degradation of the river water quality, now restricted in use by these communities. In this perspective, this study aimed to: (a) analyze the composition of the ichthyofauna in lotic and lentic environments along the basin of the Gramame River, comparing it with previous data in order to identify possible changes over time, (b) analyze the environmental perception from two riverine communities (Gramame and Mituaçu), their perceived changes in the river and fishing due to anthropogenic actions, and (c) relate the distribution of fish with the water quality (phosphorous and nitrogen nutrients). To obtain the data in the communities, a combination of qualitative and quantitative methods was used. The qualitative methods consisted of semi-structured interviews, snowball method and participant observation. The data were analyzed based on the model of unifying the various individual competences. On the other hand, quantitative data were statistically analyzed. Thirty eight fishermen were interviewed in both communities, of both genders, aged between 24 and 75 years. The ichthyofauna was collected with several fishing gear (fishing nets, fish traps, gererê and covos), always taking into account the physiographic and physiognomic peculiarities of each of the sampling points. The data for fish species were submitted to statistical analysis in order to ascertain whether there were significant differences in these parameters between sampling points. Regarding the limnological study, the sampling period were both in winter and summer, and the locations of water collection corresponded to the same sites where fish species where collected. The survey results show significant changes in fish fauna, especially with regard to the emergence of exotic species, which are now dominant in certain parts of the basin, with potential impacts to native fish fauna. It was also found that the fishermen noticed the differences in ichthyofauna and in the river. Despite the observed impacts, this environment is still important economically and socially, to promote the livelihood of many families. From the results obtained in this work it is concluded that there is urgency in formulating strategies for the sustainable use of this basin, integrating social, economic and environmental, in order to promote, among other benefits, the survival of fishing communities that depend on this the ecosystem.
Em virtude das ações antropogênicas, ecossistemas aquáticos estão sendo rapidamente alterados em todo o mundo. O impacto negativo de poluentes, mudanças na hidrologia da bacia e modificações no habitat, ou mesmo introdução de espécies exóticas, entre outras causas, resultam na perda de qualidade da água e dificultam a manutenção da integridade desses ecossistemas, além de afetar de forma significativa as populações de peixes, causando a redução nos estoques, ou mesmo o desaparecimento de espécies que não são tolerantes às novas condições ambientais. Consequentemente, pescadores artesanais que dependem dos recursos dos ambientes aquáticos, não podem mais subsistir da pesca, o que contribui para a perda do conhecimento empírico e para a diminuição da qualidade de vida. O Rio Gramame, localizado no estado da Paraíba, Brasil, passa por áreas periurbanas da região de João Pessoa, incluindo o seu distrito industrial. Consequentemente vem recebendo uma grande carga de poluentes, particularmente ao longo dos últimos 20 anos, além de efluentes domésticos e pesticidas agrícolas, agravados pela introdução de espécies exóticas. A montante do distrito industrial, o rio é rodeado por áreas de plantio de cana- de- açúcar, sem mata ciliar na maior parte do seu percurso. As comunidades ribeirinhas, residentes há décadas na bacia hidrográfica, acompanharam todo o processo de degradação da qualidade da água do rio, atualmente de uso restrito por estas comunidades. Nesta perspectiva, este estudo objetivou: (a) analisar a composição da ictiofauna em ambientes lóticos e lênticos ao longo da bacia do Rio Gramame, comparando-a com dados anteriores a fim de identificar possíveis modificações ao longo do tempo; (b) analisar a percepção ambiental junto a duas comunidades ribeirinhas (Gramame e Mituaçu) acerca das alterações observadas no rio e na pesca em decorrência de ações antropogênicas e, (c) relacionar a distribuição de peixes com a qualidade da água (nutrientes fosfatados e nitrogenados). Para obtenção dos dados junto às comunidades utilizou-se uma combinação de métodos qualitativos e quantitativos. Dentre os métodos qualitativos, destacam-se: entrevistas semi-estruturadas, bola de neve ( Snow Ball ) e observação participativa. Os dados obtidos foram analisados com base no modelo de união das diversas competências individuais. Por outro lado, os dados quantitativos foram analisados estatisticamente. Foram entrevistados 38 pescadores em ambas as comunidades, de ambos os sexos, com idades entre 24 e 75 anos. A ictiofauna foi coletada com o auxílio de diversas artes de pesca (tarrafa, rede malhadeira, gererê e covos), sempre levando em consideração as peculiaridades fisiográficas e fisionômicas de cada um dos pontos amostrais. Os dados referentes à ictiofauna foram submetidos a análises estatísticas, com o objetivo de averiguar se houve diferenças significativas nos parâmetros analisados entre os pontos amostrais. Em relação ao estudo limnológico, amostras de água foram coletadas no período chuvoso e de estiagem, e os locais de coleta corresponderam aos da ictiofauna. Os resultados da pesquisa evidenciaram alterações significativas na ictiofauna, principalmente no que diz respeito ao surgimento de espécies exóticas, que hoje são dominantes em determinados pontos da bacia, com impacto potencial para a ictiofauna nativa. Constatou-se também que os pescadores perceberam as diferenças ocorridas na ictiofauna e no rio, e que apesar dos impactos observados, esse ambiente continua sendo importante social e economicamente, por promover o sustento de muitas famílias. Conclui-se, a partir dos resultados obtidos neste trabalho, que há urgência na formulação de estratégias que permitam o uso sustentável dessa bacia, integrando fatores sociais, econômicos e ambientais, de modo a promover, dentre outros benefícios, a sobrevivência de comunidades que dependem da pesca neste ecossistema.
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Vu, Henry H. "Thermo-fluid dynamics of flash atomizing sprays and single droplet impacts". Diss., [Riverside, Calif.] : University of California, Riverside, 2010. http://proquest.umi.com/pqdweb?index=0&did=2019869981&SrchMode=2&sid=4&Fmt=2&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1274205996&clientId=48051.
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Thesis (Ph. D.)--University of California, Riverside, 2010.Includes abstract. Available via ProQuest Digital Dissertations. Title from first page of PDF file (viewed May 18, 2010). Includes bibliographical references. Also issued in print.
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Laslier, Marianne. "Suivi des impacts d’un arasement de barrage sur la végétation riveraine par télédétection à très haute résolution spatiale et temporelle". Thesis, Rennes 2, 2018. http://www.theses.fr/2018REN20037/document.
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Les cours d’eau font l’objet de prescriptions législatives encourageant leur restauration, et l’arasement de barrages est une des solutions utilisées actuellement en France pour y parvenir. La végétation riparienne participe à l’intégrité et à la stabilité des systèmes fluviaux, Elle est donc une composante majeure à évaluer dans le cadre des actions de restauration .Les objectifs de la thèse sont d'analyser la dynamique de colonisation des berges exondées à court terme dans le contexte de l’arasement des barrages de la Sélune (Normandie) et de développer des indicateurs de suivi à long terme des zones ripariennes. Dans un premier temps, une analyse des dynamiques de colonisation aux échelles intra et interannuelles réalisée à l’aide d’images drone et de relevés terrain a révélé la pertinence de l’utilisation d’images drones pour cartographier la végétation, ainsi que des dynamiques successionnelles rapides, avec un potentiel de restauration passive et de stabilisation des sédiments. Dans un second temps, l’analyse de nuages de points LiDAR en trois dimensions acquis en hiver et en été a montré la complémentarité des deux dates d’acquisition pour cartographier des indicateurs de statut des ripisylves à large échelle tels que les essences principales, l’ombrage ou la densité de strates herbacées et arbustives. Ces résultats permettent de discuter les dimensions méthodologiques et opérationnelles de l’utilisation des approches par télédétection pour le suivi des ripisylvesRivers are the object of legislation encouraging their restoration, and dam removal operations represent one of the solution to achieve it in France. Riparian vegetation plays a fundamental role in stabilizing and maintaining fluvial systems, being at the interface between terrestrial and aquatic environments. It is therefore a very important component which has to be evaluated in river restoration operations. One of the consequences of dam removal on riparian vegetation is the colonization of the dewatered sediments in the reservoir. The objective of the thesis are to define short term colonization dynamics of vegetation in context of dam removal (Sélune River, Normandy), and to develop long term indicators for the monitoring of riparian vegetation. First, an analysis of intra and interannual colonization dynamics revealed the potential of using drone images to map riparian vegetation, and fast successional dynamics with high passive restoration and sediment stabilization potential. Secondly, the analysis of 3D point clouds extracted from LiDAR data acquired in winter and summer highlighted the complementarity of the two acquisition dates to map indicators of riparian status at large scale, such as main riparian species, shading or density of herbaceous and shrubby strata. These results make it possible to discuss the methodological and operational dimensions of the use of remote sensing approaches for the monitoring of riparian vegetation
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Agrawal, Harshit. "Analyses and impacts of emissions from marine engines". Diss., UC access only, 2009. http://proquest.umi.com/pqdweb?did=1974821941&sid=1&Fmt=2&clientId=48051&RQT=309&VName=PQD.
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Rose, Teresa, e n/a. "AN INTERDISCIPLINARY STUDY INTO THE IMPACTS OF FLOW REGULATION ON AN UPLAND GRAVEL BED RIVERINE ENVIRONMENT: A TRIBUTARY CONFLUENCE IN THE SNOWY RIVER DOWNSTREAM OF JINDABYNE DAM, AUSTRALIA". University of Canberra. Cooperative Research Centre for Freshwater Ecology, 1999. http://erl.canberra.edu.au./public/adt-AUC20080917.153237.
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Inter-Basin-Water Transfers significantly reduce flow and sediment regimes to the
downstream ecosystem effecting differential channel adjustment at various locations. It
is not known how macroinvertebrates adjust to flow regulation, either spatially or
temporally, because research is lacking into how morphological adjustment affects
benthic habitat. Feedback mechanisms that initiate the adjustment process must first be
identified, then the effect on benthic habitat becomes apparent, thus, providing a link to
macroinvertebrate response.
Since regulation there has been a 95% reduction in flow volume, a complete downward
shift in both the flow duration and flood frequency curves and a 194% increase in flow
constancy compared to the pre- dam period. Furthermore, Jindabyne Dam traps 99.9%
of the total incoming sediment load.
Upstream of the tributary the dominant river response was accommodation adjustment
with subsequent contraction of the river channel. Associated feedback mechanisms
were ?armouring? and vegetation encroachment. Downstream of the tributary response
was more complex, with channel contraction through aggradation and specifically the
formation of a tributary mouth bar and fan, mid channel lobate bar, transverse bar and
in-channel bench. Associated feedback mechanisms were interactions between
vegetation and sediment; channel morphology, flow and sediment distribution; and
sediment distribution, flow and channel morphology. These processes have had site
specific and reach scale impacts on benthic habitat.
Macroinvertebrate response to flow regulation was habitat specific (riffle or edge) and
seemed to correspond to either site, or reach scale morphological adjustment, whereas,
flow constancy seemed to affect edge macroinvertebrates throughout both reaches.
Spatially, macroinvertebrates have not adjusted to the post- dam flow regime and
temporally, macroinvertebrates have not recovered 30 years after the closure of
Jindabyne Dam. How physical processes change habitats and how these impact on a
river?s ecology and at what scale, are important considerations in river management.
Livros sobre o assunto "Riverine imputs"
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M, Light Helen, Suwannee River Water Management District (Fla.) e Geological Survey (U.S.), eds. Hydrology, vegetation, and soils of riverine and tidal floodplain forests of the lower Suwannee River, Florida, and potential impacts of flow reductions. Denver, CO: U.S. Dept. of the Interior, U.S. Geological Survey, 2002.
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Scudder, Thayer. Large Dams: Long Term Impacts on Riverine Communities and Free Flowing Rivers. Springer, 2018.
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Grasty, Brent L. Economic impacts of federal and state river protection in the rural riverside housing market: The Upper Deschutes River, Oregon. 1990.
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Darst, Melanie R., e Suwannee River Water Management District (Fla.). Hydrology, Vegetation, and Soils of Riverine and Tidal Floodplain Forests of the Lower Suwannee River, Florida, and Potential Impacts of Flow reductio ... Geological Survey Professional Paper, 1656a). Geological Survey (USGS), 2002.
Encontre o texto completo da fonteCapítulos de livros sobre o assunto "Riverine imputs"
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Greimel, Franz, Lisa Schülting, Wolfram Graf, Elisabeth Bondar-Kunze, Stefan Auer, Bernhard Zeiringer e Christoph Hauer. "Hydropeaking Impacts and Mitigation". In Riverine Ecosystem Management, 91–110. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-73250-3_5.
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Schmutz, Stefan, e Otto Moog. "Dams: Ecological Impacts and Management". In Riverine Ecosystem Management, 111–27. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-73250-3_6.
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RamyaPriya, R., e L. Elango. "Geogenic and Anthropogenic Impacts on the Water Quality of Cauvery River". In Riverine Systems, 149–70. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-87067-6_9.
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Pletterbauer, Florian, Andreas Melcher e Wolfram Graf. "Climate Change Impacts in Riverine Ecosystems". In Riverine Ecosystem Management, 203–23. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-73250-3_11.
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Rajesh, M., S. Rehana e C. T. Dhanya. "Environmental Flow Impacts on Water Quality of Peninsular River System: Tunga-Bhadra River, India". In Riverine Systems, 215–34. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-87067-6_12.
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Prettenthaler, Franz, Dominik Kortschak, Stefan Hochrainer-Stigler, Reinhard Mechler, Herwig Urban e Karl W. Steininger. "Catastrophe Management: Riverine Flooding". In Economic Evaluation of Climate Change Impacts, 349–66. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-12457-5_18.
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Haidvogl, Gertrud. "Historic Milestones of Human River Uses and Ecological Impacts". In Riverine Ecosystem Management, 19–39. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-73250-3_2.
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Weigelhofer, Gabriele, Thomas Hein e Elisabeth Bondar-Kunze. "Phosphorus and Nitrogen Dynamics in Riverine Systems: Human Impacts and Management Options". In Riverine Ecosystem Management, 187–202. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-73250-3_10.
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Aslam, Hafiz Muhammad Umer, Abdul Qadir, Arsalan Ahmad, Mehmood Aslam, Mehvish Mumtaz e Sajid Rashid Ahmad. "Impacts of Plasticizers on Riverine Ecological Integrity in Context to Sustainability Challenges". In Emerging Contaminants and Associated Treatment Technologies, 323–46. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-89220-3_15.
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Wong, Swee Kiong, e Regina Garai Abdullah. "Towards a Resilient Riverine Community: A Case Study in Sadong Jaya, Sarawak, Malaysia". In Creating Resilient Futures, 205–24. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-80791-7_10.
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AbstractThis study highlights the vulnerabilities faced by a resource-deprived riverine community in Borneo (the Sadong Jaya community), particularly in dealing with different types of socio-ecological risks enhanced by the impacts of climate change. The sustainable development goals (SDGs) promote resilience and Disaster Risk Reduction (DRR) as cornerstones of sustainable development. It is in this light that this chapter studies how a local community can sustain their livelihoods while coping with environmental and economic stresses and shocks. Comparisons and reflections are then made by referring to the findings of past studies carried out among other riverine communities to highlight the similarities and, more importantly, the uniqueness of adaptation mechanisms. Findings presented in the chapter are derived from content analysis based on the data collected from four Focus Group Discussions (FGD) and in-depth interviews with the key informants. Despite the fact that Borneo is a resource-rich region where most areas are blessed with an abundance of resources, there are also regions that have limited natural and economic or capital assets, or limited access to them. This situation raises the question of how a community that is located in a disadvantaged region, resource-wise, can adapt and strive to become more resilient. These findings illustrate the need for a comprehensive community strategy to reduce risk, increase resilience and support long-term survival.
Trabalhos de conferências sobre o assunto "Riverine imputs"
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Bin Nasir, Fuad, Bahram Khazaei e Hector R. Bravo. "Investigation of Riverine Loading Impacts on the Lower Green Bay Hydrodynamic Regimes". In World Environmental and Water Resources Congress 2021. Reston, VA: American Society of Civil Engineers, 2021. http://dx.doi.org/10.1061/9780784483466.014.
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Plagge, Amanda M., Lee Jestings e Brenden P. Epps. "Next-Generation Hydrokinetic Power Take-Off via a Novel Variable-Stroke Hydraulic System". In ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/omae2014-24095.
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Hydrokinetic power generation has the potential to supply nearly ten percent of the United States annual energy demand. However, the hydrokinetic generation has lagged behind other renewable energy technologies, and many engineering challenges remain. Here, we consider the impacts of using a hydraulic power transfer system for hydrokinetic power generation. The incorporation of hydraulic power transfer into hydrokinetic systems has the potential to increase durability, reduce required maintenance, and increase power-to-weight ratio, all of which would lower the overall levelized cost of energy (LCOE). In the proposed system, patented low friction, variable-stroke hydraulic pump and motor pairs would allow energy to be harvested efficiently throughout the full range of water velocities in either tidal or riverine flows and with any type of rotary prime mover. A full system characterization is provided, along with a calculation of expected LCOE and a considered analysis of the applicability of hydraulic PTO systems as a way to advance commercial hydrokinetic power generation.
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Barry, Jeff, Rafael G. Mora e Brian Carlin. "An Approach for Prioritizing Pipeline Water Crossings (WC) for Effective Mitigation and Monitoring". In 2014 10th International Pipeline Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/ipc2014-33656.
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This paper provides an approach for assessing and classifying riverine pipeline crossings to prioritize effective mitigation and monitoring. These processes require understanding of and accounting for channel processes, river dynamics, geomorphic principals and soil mechanics to estimate bed scour and bank erosion degradation mechanisms at water crossings and their potential effects on the pipeline. The intent of this paper is to share generic experiences in ranking water crossings based on their susceptibility to and identification of integrity threats under multiple existing and future hydrologic scenarios causing potential for pipeline exposure, spanning or damage. The intent is not to present or provide an analysis or review of the various methods for estimating channel bed or bank erosion. The details of such calculations are highly site specific and a variety of both qualitative and quantitative methods can be applied depending upon available site data, and as such, are outside the scope of the work presented here. Pipelines are static features within a dynamic environment with rivers and floodplains representing some of the most active areas within a landscape. Rivers can change course, migrate, deepen, and widen slowly over time or suddenly during large flood events. These hydrologic effects can impact existing pipelines thereby putting pipelines at risk for damage or failure. Understanding how rivers alter the landscape and transport water and sediment from the mountains to the sea provides a framework for realizing the potential toll that riverine changes can have on pipeline infrastructure. Further, integrating analysis of how rivers at specific pipeline crossing locations are likely to change can increase the effectiveness in protecting the environment during the design, construction, operation and integrity management of pipelines at river crossings. The paper provides an approach comprised of five (5) stages: 1. WC Inventory and Desktop Data Gathering 2. Screening Process: Preliminary WC Classification 3. Detailed Assessment 4. Final WC Classification, Prioritization, and Risk Assessment 5. Development of Mitigation and Monitoring Strategies This paper also presents two (2) case studies illustrating how assessing the geomorphic condition and processes of the river system being crossed by pipelines provides for a better understanding of susceptibility to existing hydro-geotechnical threats to the pipeline as well as the susceptibility for flood-related forces in the future. The first case study illustrates how changes to a river’s cross section as a result of construction activities upstream of a pipeline water crossing can cause significant and potentially damaging impacts, downstream. The second case study reinforces the importance of understanding the history of watershed and channel changes over time, both at the specific water crossing location, but also both upstream and downstream from the crossing itself to be able to identify and understand all potential threats to pipelines located within rivers and floodplains. A method for assessing and classifying the magnitude and probability of flood related risk at each case study is discussed. These cases are presented as generic examples for educational purposes only as every pipeline has its own specific characteristics conditions with jurisdiction-specific regulatory requirements requiring process customization and enhancements.
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Ivanič, Peter, Hilda Kramáreková e Martin Hetényi. "MODERN DIMENSIONS OF STS. CYRIL AND METHODIUS AND THEIR HERITAGE IN SLOVAKIA". In THE PATH OF CYRIL AND METHODIUS – SPATIAL AND CULTURAL HISTORICAL DIMENSIONS. Cyrillo-Methodian Research Centre – Bulgarian Academy of Sciences, 2023. http://dx.doi.org/10.59076/2815-3855.2023.33.19.
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The heritage of Sts. Cyril and Methodius is part of the cultural wealth of several nations and countries, including Slovakia. The most famous present-day regular religious and cultural events dedicated to Sts. Cyril and Methodius are held in Nitra, Terchová, Bojná, Devín, Selce, Sečovce and Stropkov. In addition, Močenok organizes festivities associated with St. Gorazd, a disciple of the Thessalonian brothers. Regular local festivities are also held in some Roman Catholic parishes dedicated to Sts. Cyril and Methodius. After 1989, one could observe an increased degree of veneration of Sts. Cyril and Methodius also in the dedication of new sacral buildings in several villages in Slovakia. Currently, there are 106 larger sacral buildings (churches and chapels) in Slovakia under Cyril and Methodius’s patronage. The profane buildings that bear the name associated with Cyril and Methodius most often include educational institutions and their buildings (University of Sts. Cyril and Methodius in Trnava, Constantine the Philosopher University in Nitra and the Roman Catholic Faculty of Theology of Cyril and Methodius at Comenius University Bratislava etc.). From among the medical institutions, this category includes the Hospital of Sts. Cyril and Methodius, which is part of the largest medical facility in Slovakia – University Hospital Bratislava. The symbolism of Cyril and Methodious was also found e.g. in the coat of arms of the village of Brodské in the district of Skalica. The coat of arms of this village near Skalica portrays two dominant figures who are sometimes interpreted as two Franciscans, but also as Sts. Cyril and Methodius. The second example is the coat of arms of the village of Nová Bošáca in the district of Nové Mesto nad Váhom, which – in addition to the typical plum tree – also includes the letters C and M, symbolizing the new patronage of the Church of Sts. Cyril and Methodius. Intangible assets also include street and square names. In eight Slovak cities (Bratislava-Devín, Košice-Krásna, Nitra, Poprad, Zvolen, Hlohovec, Sečovce and Vrbové) and in the village of Slovenské Nové Mesto, there are squares named after Cyril and Methodius. Within the street names category, we have identified urbanonyms such as: Sts. Cyril and Methodius Street (11x), St. Cyril and St. Methodius Street (1x), Cyril and Methodius Street (1x), Cyrillo-Methodian Street (2x), Cyril‘s Street (2x), Constantine‘s Street (1x), Methodius‘s Street (5x), St. Cyril‘s Riverside (1x), St. Methodius‘s Riverside (1x). The establishment of the cult of Sts. Cyril and Methodius in Slovakia can be observed through the growing number of St. Cyril‘s relics also. Currently, the most important impetus for the development of a modern perception of the ever-vibrant legacy of Europe‘s patrons is the certification of the European Cultural Route of Sts. Cyril and Methodius, but also the commitment to future generations in the implementation of the key principles of the Council of Europe (human rights, cultural democracy, cultural diversity and identity, dialogue, mutual exchange and cross-border and cross-century enrichment).
Relatórios de organizações sobre o assunto "Riverine imputs"
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Pruitt, Bruce, e Richard Rheinhardt. A regional guidebook for applying the hydrogeomorphic approach to assessing wetland functions of forested riverine wetlands in alluvial valleys of the Piedmont Region of the United States. Engineer Research and Development Center (U.S.), setembro de 2023. http://dx.doi.org/10.21079/11681/47685.
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The Hydrogeomorphic (HGM) approach is used for developing and applying models for the site-specific assessment of wetland functions. It was initially designed for use in the context of the Clean Water Act Section 404 Regulatory Program permit review process to analyze project alternatives, minimize impacts, assess unavoidable impacts, determine mitigation requirements, and monitor the success of compensatory mitigation. However, a variety of other potential uses have been identified, including the design of wetland restoration projects, projecting ecological outcomes, developing success criteria and performance standards, and adaptive monitoring and management of wetlands. This guidebook provides an overview of the HGM approach including classification and characterization of the principal alluvial riverine wetlands identified in the Piedmont physiography. Eight potential subclasses of Piedmont wetlands, including Headwater, Low- and Mid-gradient Riverine, Floodplain Depression, Footslope Seeps, Flats, Precipitation Depressions, and Fringe wetlands were recognized. However, the occurrence of Flats, Precipitation Depressions, and Fringe wetlands in the Piedmont, are uncommon and not generally associated with alluvial riverine systems which is the subject of this Guidebook. Detailed HGM assessment models and protocols are presented for the five most common Piedmont riverine subclasses: Headwater, Low- and Mid-gradient Riverine, Floodplain Depression, and Footslope Seep. For each wetland subclass, the guidebook presents (a) the rationale used to select the wetland functions considered in the assessment process, (b) the rationale used to select assessment models, and (c) the functional index calibration curves developed from reference wetlands used in the assessment models. The guidebook outlines an assessment protocol for using the model variables and functional indices to assess each wetland subclass. The appendices provide field data collection forms. In addition, an automated spreadsheet model is provided to make calculations.
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Greer, Chris, John Quinn, Adrianne E. Carr e Ben L. O'Connor. A Groundwater Model to Assess Water Resource Impacts at the Riverside East Solar Energy Zone. Office of Scientific and Technical Information (OSTI), dezembro de 2013. http://dx.doi.org/10.2172/1170612.
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Dauble, Dennis. Assessment of the Impacts of Development and Operation of the Columbia River Hydroelectric System on Mainstem Riverine Processes and Salmon Habitats : Final Report. Office of Scientific and Technical Information (OSTI), junho de 2000. http://dx.doi.org/10.2172/773345.
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McAlpin, Jennifer, e Cassandra Ross. Houston Ship Channel numerical model update and validation. Engineer Research and Development Center (U.S.), agosto de 2023. http://dx.doi.org/10.21079/11681/47498.
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The Houston Ship Channel (HSC) is one of the busiest deep-draft navigation channels in the United States and must be able to accommodate increasing vessel sizes. The US Army Corps of Engineers, Galveston District (SWG), requested the US Army Engineer Research and Development Center, Coastal and Hydraulics Laboratory, update and revalidate a previously developed three-dimensional Adaptive Hydraulics (AdH) hydrodynamic and sediment model of the HSC, Galveston, and Trinity Bays. The model is necessary for analyzing potential impacts on salinity, sediment, and hydrodynamics due to alternatives designed to reduce shoaling in the HSC. SWG requested an updated validation of the previously developed AdH model of this area to calendar years 2010 and 2017, utilizing newly collected sediment data. Updated model inputs were supplied for riverine suspended sediment loads as well as for the ocean tidal boundary condition. The updated model shows good agreement to field data in most conditions but also indicates potential issues with freshwater flow inputs as well as the ocean salinity boundary condition.
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Meunier, Valérie, e Eric Marsden. Analyse coût-bénéfices: guide méthodologique. Fondation pour une culture de sécurité industrielle, dezembro de 2009. http://dx.doi.org/10.57071/492acb.
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La gestion des risques industriels soulève de nombreuses questions auxquelles on ne peut pas répondre par un simple «oui» ou «non»: (1) quels critères la société devrait-elle utiliser pour décider que les risques d'une installation industrielle ont été réduits aussi bas que raisonnablement praticable? (2) comment arbitrer entre des considérations qui relèvent de «dimensions» différentes: morts et blessés potentiels en cas d'accident industriel, impacts potentiels sur l'environnement, enjeux financiers, développement de l'emploi, déménagements forcés en cas d'expropriation d'habitations, etc. et ayant des impacts sur de multiples parties prenantes (riverains des installations industrielles, exploitants et employés des sites, élus locaux et régionaux, etc.)? L'analyse coût-bénéfices (ACB) est un outil d'aide à la décision qui peut faciliter la discussion entre parties prenantes. Elle fournit un cadre structuré permettant de présenter l'ensemble des éléments de la décision et discuter de leur pondération respective, favorisant ainsi la transparence du processus décisionnel. Cet outil est largement utilisé dans les pays anglo-saxons en matière de réglementation environnementale et de décisions concernant la sécurité industrielle. Le présent document vise à aider des analystes qui souhaiteraient conduire une ACB d'un projet d'investissement en matière de sécurité ou une analyse d'impact d'une réglementation liée à la prévention. Il vise également à éclairer les lecteurs de telles études et les aider à évaluer la qualité de l'analyse. Le document présente les concepts économiques qui sous-tendent l'ACB, et décrit les principales étapes pratiques d'une étude. Il fournit des indications sur les sources de données permettant de monétiser différentes conséquences hors-marché de l'activité industrielle (impact sur la santé et la sécurité des personnes, pollutions environnementales et nuisances sonores). Le document propose également une check-list des questions qu'il peut être utile de se poser lors de la lecture critique d'une étude ACB.
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Protocol for Riverine Microplastics Monitoring. Vientiane, Lao PDR: Mekong River Commission Secretariat, janeiro de 2024. http://dx.doi.org/10.52107/mrc.bh5hvu.
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With a recent study identified the Mekong River as one of ten rivers to contribute over 90% of plastic debris to the world’s marine environment, there is an urgent need for a reliable data and information on riverine plastic debris pollution and their impacts to the aquatic environment of Mekong River. This Protocol for Riverine Microplastic Monitoring has been developed and finalized as one of three protocols of the MRC’s Detailed Methodology for the Long-term and Cost-effective Monitoring of Riverine Plastic Debris Pollution in the Lower Mekong River Basin (LMB). The finalization of the detailed methodology was made possible through the concerted efforts and commitment of the MRC Member Countries and support of experts at national, regional and global levels, and included rigorous processes of consultations, capacity building, and piloting to ensure that the methodology is adapted to the situation of the LMB. The methodology aims to provide the much-needed data and information for an improved knowledge and understanding on the pathway and behaviors of plastic debris pollution in the LMB, from land-based sources to riverine environment, and ultimately to the marine environment. Information derived from the long-term implementation of methodology can be used to assess the effectiveness of plastic waste management the LMB.
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Procedures for Notification, Prior Consultation and Agreement (PNPCA). Vientiane, Lao PDR: Mekong River Commission Secretariat, novembro de 2003. http://dx.doi.org/10.52107/mrc.akbnu1.
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Guidelines on Implementation of the Procedures for Notification, Prior Consultation and Agreement (PNPCA). Vientiane, Lao PDR: Mekong River Commission Secretariat, agosto de 2005. http://dx.doi.org/10.52107/mrc.aji2nk.
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The guidelines facilitate the Implementation of the PNPCA, aimed at optimising the use of water resources for development while minimising potential adverse transboundary impacts on the environment and livelihoods of riverine communities.
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Annual Mekong Flood Report 2012. Vientiane, Lao PDR: Mekong River Commission Secretariat, agosto de 2014. http://dx.doi.org/10.52107/mrc.ajgf8k.
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This report looks at flash floods in particular their relation with tributary and mainstream floods. It makes a comparison between these and riverine floods and discusses their impacts on their incidence and severity, such as land use changes and climate change.
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Protocol for Riverine Macroplastic Monitoring: Long-term and Cost-effective Monitoring of Riverine Plastic Debris Pollution in the Lower Mekong River. Vientiane, Lao PDR: Mekong River Commission Secretariat, dezembro de 2023. http://dx.doi.org/10.52107/mrc.bflvfj.
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With a recent study identified the Mekong River as one of ten rivers to contribute over 90% of plastic debris to the world’s marine environment, there is an urgent need for a reliable data and information on riverine plastic debris pollution and their impacts to the aquatic environment of Mekong River. This Riverine Macroplastic Monitoring Protocol has been developed and finalized as one of three protocols of the MRC’s Detailed Methodology for the Long-term and Cost-effective Monitoring of Riverine Plastic Debris Pollution in the Lower Mekong River Basin (LMB). The finalization of the detailed methodology was made possible through the concerted efforts and commitment of the MRC Member Countries and support of experts at national, regional and global levels, and included rigorous processes of consultations, capacity building, and piloting to ensure that the methodology is adapted to the situation of the LMB. The methodology aims to provide the much-needed data and information for an improved knowledge and understanding on the pathway and behaviors of plastic debris pollution in the LMB, from land-based sources to riverine environment, and ultimately to the marine environment. Information derived from the long-term implementation of methodology can be used to assess the effectiveness of plastic waste management the LMB.