A hydroelectric dam borrow pit rehabilitation. Two decades after the project, what went wrong?

2021 ◽  
Vol 293 ◽  
pp. 112850
Author(s):  
Yuri A. Figueiredo de Souza ◽  
Mariangela G.P. Leite ◽  
Maria A.G. Fujaco
Keyword(s):  
Hydroelectric Dam

Governing the Rainforest

2019 ◽  
Author(s):  
Eve Z. Bratman
Keyword(s):  
Sustainable Development ◽  
Historical Analysis ◽  
Brazilian Amazon ◽  
Conservation Areas ◽  
Colonial Era ◽  
Hydroelectric Dam ◽  
History Of ◽  
Development Plans ◽  
Extractive Reserves ◽  
Road Paving

Sustainable development is among the foremost ideas that guide societal aspirations around the world. This book interrogates the concept through a critical lens, examining both its history and the trajectory of its manifestations in the Brazilian Amazon. The book argues that sustainable development is a concept that is better understood as involving embroilments and ongoing processes of contestation rather than a single end goal. The research offers historical analysis of Amazonian development from the colonial era into the discourse and praxis of sustainable development in contemporary times, and then illustrates the tensions of sustainable development plans that are experienced by people living in the areas geographically the closest to where those plans are being implemented. The history of the Brazilian Amazon is introduced to readers through focused discussions on the tensions between making grand plans for the region and the everyday practices and experiences of sustainable development, which involve considerably more muddling. Case studies explore agrarian reform initiatives that occur alongside road paving projects, the creation of extractive reserves and conservation areas that follow in the wake of assassinations, and the construction of a massive hydroelectric dam. While Amazonian sustainable development is a widely-accepted imperative, the research presented here shows how land use and infrastructure plans conducted in the name of sustainable development often perpetuate and reinforce economic and political inequalities.

Effects of the Belo Monte hydro-electric-dam complex on crocodilians in the Xingu River, Brazilian Amazonia

2021 ◽  
pp. 1-8
Author(s):  
Zilca Campos ◽  
Fábio Muniz ◽  
William E. Magnusson ◽  
Guilherme Mourão
Keyword(s):  
Water Level ◽  
Xingu River ◽  
Hydroelectric Dam ◽  
River Reservoir ◽  
Before And After ◽  
Collateral Effects ◽  
Generating Capacity ◽  
Reservoir Filling ◽  
Belo Monte

Abstract The Belo Monte hydroelectric dam on the Xingu River has the third largest generating capacity of any hydroelectric dam in the world. We conducted surveys of crocodilians (Caiman crocodilus, Paleosuchus trigonatus) by boat in the Xingu River at the site of the dam prior to (2013-2015), and after filling (2016-2017). While the number of C. crocodilus sighted decreased with increasing water level, there was no difference in numbers prior to, and after reservoir filling. The number of P. trigonatus was unaffected by both water level prior to and after reservoir filling. Reservoir filling had little effect on the number of crocodilians using the forest around the Xingu River reservoir. Most crocodilians seen in forest surveys were P. trigonatus, both before and after reservoir filling, but C. crocodilus was recorded occasionally in the forest. It seems that most Amazonian crocodilians are sufficiently generalist to adapt to the new conditions created by the construction of dams, at least in the short-term. However, there may be long-term collateral effects on crocodilian populations from dams, due to as deforestation and improved access for hunters.

scholarly journals DIFFERENCES AND SIMILARITIES IN IMPACTS OF HYDROELETRIC DAMS BETWEEN NORTH AND SOUTH OF BRAZIL

2016 ◽  
Vol 19 (2) ◽  
pp. 265-286 ◽  
Author(s):  
GUILLAUME LETURCQ
Keyword(s):  
Hydroelectric Dams ◽  
Secondary Sources ◽  
The North ◽  
The People ◽  
Hydroelectric Dam ◽  
Area North ◽  
South Of Brazil ◽  
The Impact ◽  
North And South ◽  
Belo Monte

Abstract The environmental impacts of hydroelectric dams in Brazil are investigated in local and regional scales, for the last years. In this paper, we analyze the impact than the establishment of a hydroelectric dam has for the people and their spaces, with the comparative experiences occurred for the North and South of Brazil. We will focus on aspects related to the organization of families, social fight, the compensation and resettlement of people affected by the dam's construction, as well we take a look to the similarities between the two areas, with emphasis on aspects related to migration, mobility and landscapes. For this, we rely on research carried out on the river Uruguay (South), based on interviews, questionnaires and studies of primary and secondary sources, from 2007 to 2014 and also in a survey that is currently being held in Belo Monte area (North), which also uses primary and secondary sources, with fieldwork periods.

scholarly journals Reliable Data Acquisition System for a Low-Cost Accelerograph Applied to Structural Health Monitoring

2020 ◽  
Vol 3 (2) ◽  
pp. 181-194
Author(s):  
Milton Muñoz ◽  
Remigio Guevara ◽  
Santiago González ◽  
Juan Carlos Jiménez
Keyword(s):  
Structural Health Monitoring ◽  
Data Acquisition ◽  
Health Monitoring ◽  
Seismic Event ◽  
Low Cost ◽  
Recording System ◽  
Continuous Recording ◽  
Remote Communication ◽  
Structural Health ◽  
Hydroelectric Dam

This paper presents and evaluates a continuous recording system designed for a low-cost seismic station. The architecture has three main blocks. An accelerometer sensor based on MEMS technology (Microelectromechanical Systems), an SBC platform (Single Board Computer) with embedded Linux and a microcontroller device. In particular, the microcontroller represents the central component which operates as an intermediate agent to manage the communication between the accelerometer and the SBC block. This strategy allows the system for data acquisition in real time. On the other hand, the SBC platform is used for storing and processing data as well as in order to configure the remote communication with the station. This proposal is intended as a robust solution for structural health monitoring (i.e. in order to characterize the response of an infrastructure before, during and after a seismic event). The paper details the communication scheme between the system components, which has been minutely designed to ensure the samples are collected without information loss. Furthermore, for the experimental evaluation the station was located in the facilities on a relevant infrastructure, specifically a hydroelectric dam. The system operation was compared and verified with respect to a certified accelerograph station. Results prove that the continuous recording system operates successfully and allows for detecting seismic events according to requirements of structural health applications (i.e. detects events with a frequency of vibration less than 100 Hz). Specifically, through the system implemented it was possible to characterize the effect of a seismic event of 4 MD reported by the regional seismology network and with epicenter located about 30 Km of the hydroelectric dam. Particularly, the vibration frequencies detected on the infrastructure are in the range of 13 Hz and 29 Hz. Regarding the station performance, results from experiments reveals an average CPU load of 51%, consequently the processes configured on the SBC platform do not involve an overload. Finally, the average energy consumption of the station is close to 2.4 W, therefore autonomy provided by the backup system is aroud of 10 hours.

scholarly journals Tick Infection of Caiman crocodilus fuscus at the Hidroprado Hydroelectric Dam in Colombia: New Records, Parasite Prevalence, and Blood Loss Rate

2020 ◽  
Vol 16 (1) ◽  
pp. 42
Author(s):  
Cristina Mora-Rivera ◽  
Fernando Suarez-Páez ◽  
Gualberto Pacheco-Sierra ◽  
Laura Vargas-Cuevas ◽  
Mónica Padilla-Barreto
Keyword(s):  
Blood Loss ◽  
Loss Rate ◽  
New Records ◽  
Parasite Prevalence ◽  
Caiman Crocodilus ◽  
Tick Infection ◽  
Hydroelectric Dam

Hydroelectric Dam and Tidal Gates

2016 ◽  
pp. 253-262
Author(s):  
David J Smith ◽  
Kenneth GL Simpson
Keyword(s):  
Hydroelectric Dam

‘Stepping on the heads of our Gods'

2015 ◽  
Vol 6 (2) ◽  
pp. 40-56
Author(s):  
Yangji Doma Sherpa ◽  
A. John Sinclair ◽  
Thomas Henley
Keyword(s):  
Decision Making ◽  
Rapid Development ◽  
High Mountain ◽  
Court Cases ◽  
The Public ◽  
Mountain Environments ◽  
Hydroelectric Dam ◽  
Decision Making Processes

The Himalayan region of India is experiencing rapid development in tourism, agriculture, highway construction and hydroelectric dam construction. This research considered the role of the public both within and outside of development decision-making processes in these high mountain environments using the proposed Himalayan Ski Village (HSV) in Manali as a case study. The qualitative data revealed that there has been an extensive array of public participation activity related to the HSV project over approximately 10 years. Very little of this activity has evolved, however, through the formal decision-making process. Rather, most participation activities, such as general house meetings, objection letters, public rallies, court cases against the proposed project, and a religious congregation were instigated by the public to protest the proposed development. The findings also show that involvement in the participatory activities undertaken by the public and project proponent fostered instrumental and communicative learning outcomes.

scholarly journals Diet of Bryconops alburnoides and B. caudomaculatus (Osteichthyes: Characiformes) in the region affected by Balbina Hydroelectric Dam (Amazon drainage, Brazil)

2008 ◽  
Vol 6 (2) ◽  
pp. 237-242 ◽  
Author(s):  
Cylene C. da Silva ◽  
Efrem J. G. Ferreira ◽  
Cláudia P. de Deus
Keyword(s):  
Heavy Rainfall ◽  
Amazon Basin ◽  
Relative Volume ◽  
Fish Diet ◽  
Frequency Of Occurrence ◽  
Important Data ◽  
Hydroelectric Dam ◽  
Morisita Index ◽  
Terrestrial Insects ◽  
And Behavior

The study of fish diet and its interaction with the environment provides important data on ecology and behavior, as fish face varying environmental and food availability conditions. The aim of the present study was to determine the diet of Bryconops caudomaculatus and Bryconops alburnoides, as well as to assess its seasonal variation, within the area influenced by Balbina Hydroelectric Dam (BHD), in the Uatumã River (Amazon Basin, Brazil). Collections were carried out every two months from April 2005 to February 2007, using gill nets with mesh sizes ranging from 12 to 60 mm between opposite knots. Two methods were used for determining diet: frequency of occurrence and relative volume, which were used to calculate the alimentary index (IAi). Diet similarity between species was analyzed by applying the Morisita index. Bryconops alburnoides ingested 12 items and B. caudomaculatus 10, with a 59% similarity between ingested items. Terrestrial insects for B. alburnoides and immature insects for B. caudomaculatus were the main items in their diets, and therefore, they were considered insectivorous. The seasonal composition of the diet of B. alburnoides was influenced by environmental factors, and in spite of the dominance of immature insects, it had a significant number of terrestrial insects during the heavy rainfall periods.

Energy stores and mercury concentrations in a common minnow (spottail shiner, Notropis hudsonius ) associated with a peaking hydroelectric dam

2020 ◽  
Vol 36 (7) ◽  
pp. 1046-1055
Author(s):  
Derek J. Green ◽  
Timothy D. Jardine ◽  
Lynn P. Weber ◽  
David M. Janz
Keyword(s):  
Hydroelectric Dam ◽  
Energy Stores
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