Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network

Open Access. Powered by Scholars. Published by Universities.®

Articles 1 - 30 of 165

Full-Text Articles in Entire DC Network

Ecology And Conservation Of Bird Assemblages In Native And Afforested Environments In The Northern Campos Grasslands Of Uruguay, Juan Andrés Martínez Lanfranco Dec 2017

Ecology And Conservation Of Bird Assemblages In Native And Afforested Environments In The Northern Campos Grasslands Of Uruguay, Juan Andrés Martínez Lanfranco

Theses and Dissertations

Commercial forestry has expanded across the Rio de la Plata Grasslands (RPG) of South America in recent decades. I conducted a resource-use based study on bird communities during the 2013-2014 austral breeding season in northern Uruguay. I assessed relationships between habitat types and bird abundance as a function of vegetation structure. To compare avian responses to treatments, I included native environments, pine and eucalyptus plantations of different ages and thinning regimes. I detected differences in species richness and composition and species-specific responses in abundance along structural gradients sampled. Although poorer in species than native habitat types, tree plantations were extensively …


The Reptiles Of Paraguay: Literature, Distribution, And An Annotated Taxonomic Checklist, Pier Cacciali, Norman J. Scott, Aida Luz Aquino Ortíz, Lee A. Fitzgerald, Paul Smith Jun 2016

The Reptiles Of Paraguay: Literature, Distribution, And An Annotated Taxonomic Checklist, Pier Cacciali, Norman J. Scott, Aida Luz Aquino Ortíz, Lee A. Fitzgerald, Paul Smith

Special Publications

Our goal is to provide a current list of reptile species of Paraguay, with maps of their known occurrences. Surprisingly little research has been conducted on the reptile fauna of Paraguay. In contrast, Brazil and Argentina have a long history of herpetological investigation, each country having produced hundreds of publications on reptiles and amphibians in the last century. Paraguay, lying between the two countries, has been the focus of only a handful of investigators, mostly foreign, and there have been few publications on the herpetofauna. This checklist of reptiles in Paraguay will enhance understanding of biogeographic linkages between reptile faunas …


Investigating The Causes Of Repeated Presidential Failure In South America, Margaret Edwards Feb 2014

Investigating The Causes Of Repeated Presidential Failure In South America, Margaret Edwards

Political Science ETDs

This dissertation examines the issue of presidential failure — any instance in which a president fails to complete his/her term in office without a break in the democratic regime. South America stands as an anomaly for having faced an uncommonly high rate of presidential failure, as eleven elected presidents have failed to complete their terms in office since the third wave of democratization. This phenomenon presents an interesting puzzle for scholars because it allows for inquiries into governmental stability as well as executive accountability. I evaluate the causes of presidential failure in South America through a multi-method approach that looks …


What Is The Outlook For Paraguay's Electricity Sector?, Inter-American Dialogue's Latin American Energy Advisor Oct 2011

What Is The Outlook For Paraguay's Electricity Sector?, Inter-American Dialogue's Latin American Energy Advisor

Latin American Energy Dialogue, White Papers and Reports

Paraguayan President Fernando Lugo has pledged to guarantee energy sovereignty for the country, claiming that its complicated energy sharing agreements with Brazil and Argentina are unfair. Paraguay is seeking to export excess power to Uruguay, an important source of revenue, but says that Argentine officials have made unreasonable demands. Are the energy sharing agreements unfair and if so, what changes should be made? How successful has Lugo been in negotiating ""energy sovereignty"" for Paraguay? Is the dispute with Argentina likely to be resolved soon and allow Paraguay to export energy to Uruguay?


In Colombia, Blossoming Biofuel Industry Driven By Top-Down Targets And Incentives, Benjamin Witte-Lebhar Aug 2011

In Colombia, Blossoming Biofuel Industry Driven By Top-Down Targets And Incentives, Benjamin Witte-Lebhar

NotiEn: An Analytical Digest About Energy Issues in Latin America

In the span of just a few short years, Colombia--already a major oil and coal producer--has developed an entirely different energy industry: biofuels. The industrys pedal-to-the-metal production surge has attracted no shortage of admirers, who hail the biofuel bonanza as a model worth emulating. Others, however, question the social, economic, and even environmental implications of harvesting fuel from the country's fertile fields.'


Despite Government Approval, Chiles Hidroaysén Dam Project Sill Not Done Deal', Benjamin Witte-Lebhar Jul 2011

Despite Government Approval, Chiles Hidroaysén Dam Project Sill Not Done Deal', Benjamin Witte-Lebhar

NotiEn: An Analytical Digest About Energy Issues in Latin America

Flip-flop rulings have left the fate of the controversial HidroAysén venture, a multibillion-dollar dam scheme slated for southern Chile's Patagonia region, very much up in the air. The recent roller-coaster events have made one thing clear: in Chile, energy matters--once the exclusive domain of private utilities companies--are now becoming everyone's business. The project's developers, Spanish-Italian electricity giant Endesa and Colbún, a Chilean utility, have been pushing for the past five years to build a network of hydroelectric plants along the Río Baker and Río Pascua, a pair of powerful rivers that flow through Chile's far southern Aysén Region. HidroAysén, as …


Brazilian Environmental Agency Gives Belo Monte Dam Green Light As Government Continues To Invest In Hydroelectric Power, Ana Cristina Powell Jul 2011

Brazilian Environmental Agency Gives Belo Monte Dam Green Light As Government Continues To Invest In Hydroelectric Power, Ana Cristina Powell

NotiEn: An Analytical Digest About Energy Issues in Latin America

On June 1, 2011, the Brazilian environmental agency, the Instituto Brasileiro do Meio Ambiente e dos Recursos Naturais Renováveis (IBAMA), gave the government the green light to proceed with construction of the controversial Belo Monte dam. After 30 years of planning and struggle against opposition to the project, the Belo Monte hydroelectric power plant will be built in the Xingu river basin. This would be the third-largest such facility in the world, after the Three Gorges Dam in China and the Itaipú dam, shared by Brazil and Paraguay. IBAMA conceded the license despite national and international criticism and a recommendation …


Ecuadoran Government Set To Resume Armadillo Oil Project Despite Opposition From Indigenous Communities And Environmentalists, Luis Ángel Saavedra Jul 2011

Ecuadoran Government Set To Resume Armadillo Oil Project Despite Opposition From Indigenous Communities And Environmentalists, Luis Ángel Saavedra

NotiEn: An Analytical Digest About Energy Issues in Latin America

The Ecuadoran government reopened a call for tenders for the Armadillo oil field, in the Amazonian province of Orellana, where evidence has been found of settlements and movement of the Tagaeri and Taromenane peoples, who remain in voluntary isolation. The new call for tenders has produced a controversy, not only among environmentalists, the indigenous movement, and the government but also within the government team, since the Tagaeri and Taromenane peoples are beneficiaries of protective measures called for by the Inter-American Commission on Human Rights (IACHR).


What Is The Fate Of Chile's Hidroaysén Project?, Inter-American Dialogue's Latin American Energy Advisor Jul 2011

What Is The Fate Of Chile's Hidroaysén Project?, Inter-American Dialogue's Latin American Energy Advisor

Latin American Energy Dialogue, White Papers and Reports

A court ruling in Chile on June 20 suspended the controversial HidroAysén project, a proposed plan to dam two rivers and build five hydroelectric plants in Patagonia, The New York Times reported. While environmental groups hope that the ruling is the first step in canceling the dams, a lawyer for the project told local newspaper La Tercera that the ruling was ""purely formal"" and made no decision about the complex's legality. Does Chile's booming demand for energy outweigh the detriments of the project, as the government has claimed? Are there adequate alternatives to supply the necessary power for the country's …


Is The Region Capable Of Meeting Increased Electricity Demand?, Inter-American Dialogue's Latin American Energy Advisor Jul 2011

Is The Region Capable Of Meeting Increased Electricity Demand?, Inter-American Dialogue's Latin American Energy Advisor

Latin American Energy Dialogue, White Papers and Reports

Brazil's Säo Paulo state has suffered several major power failures this year, while the Venezuelan government has enacted rationing measures and begun importing electricity from Colombia. Meanwhile, Argentina's electricity consumption in May grew by 7.8 percent over the year prior, and the Chilean government has repeatedly said it will need to double its electricity generation capacity in the next 10 to 15 years. As Latin American economies continue to grow, how capable are they of meeting electricity demand? Are power shortages likely to hamper growth and, if so, where? What role should the state play in developing the power sector, …


Is Government Interference Hampering Petrobras?, Inter-American Dialogue's Latin American Energy Advisor Jun 2011

Is Government Interference Hampering Petrobras?, Inter-American Dialogue's Latin American Energy Advisor

Latin American Energy Dialogue, White Papers and Reports

Some investors, concerned about government meddling and profitability at Brazilian oil giant Petrobras, have shifted interest away from the state-run company to startup companies that include OGX Petroleo and HRT ParticipaÇões, Reuters reported May 25. How significant of a problem is political interference for Petrobras and what effect does it have on profitability? What has been the effect of pre-salt regulations on the country's ability to efficiently develop the fields? Is the outlook for the new crop of oil start-ups as rosy as some investors paint, or over-hyped?


How Well Is Uruguay's Nascent Oil Sector Advancing?, Inter-American Dialogue's Latin American Energy Advisor Jun 2011

How Well Is Uruguay's Nascent Oil Sector Advancing?, Inter-American Dialogue's Latin American Energy Advisor

Latin American Energy Dialogue, White Papers and Reports

Uruguay's state-run oil and gas company, ANCAP, announced last month that it discovered the first traces of underground oil in what may be a ""promising shale deposit,"" according to director Juan Gómez. ANCAP is also preparing to launch a new bidding round for offshore blocks in September and a second round in 2012. Gómez has said the new find and the possibility of offshore oil have attracted significant interest by international investors. How promising is future onshore and offshore development in Uruguay? Does the government have the right regulatory structures in place? What more should it be doing to promote …


How Will Changes To U.S. Ethanol Subsidies Affect Brazil?, Inter-American Dialogue's Latin American Energy Advisor May 2011

How Will Changes To U.S. Ethanol Subsidies Affect Brazil?, Inter-American Dialogue's Latin American Energy Advisor

Latin American Energy Dialogue, White Papers and Reports

Last month, U.S. senators introduced competing legislation regarding the ethanol producer subsidy and import tariff, which are set to expire this year. A bill proposed by Democrat Dianne Feinstein (Calif.) and Republican Tom Coburn (Okla.) would eliminate the 45-cent subsidy for ethanol producers and 54-cent tariff for ethanol imports, while legislation from R Senators Charles Grassley (R-Iowa) and Kent Conrad (D-N.D.) would sharply reduce, but still retain, the measures. What are the advantages and drawbacks of the bills and is one likely to pass? How would the legislation affect the ethanol industry? Does Brazil have the infrastructure and capacity to …


Brazilian President Dilma Rousseff Proceeding With Nuclear Power Despite Fukushima Accident, Graziela Aronovich May 2011

Brazilian President Dilma Rousseff Proceeding With Nuclear Power Despite Fukushima Accident, Graziela Aronovich

NotiEn: An Analytical Digest About Energy Issues in Latin America

The disaster at the Fukushima Daiichi Nuclear Power Plant in Japan has increased pressure on the Brazilian government to justify the use of nuclear power, but there is little evidence that President Dilma Rousseffs administration plans to make any major changes to Brazil's nuclear-power program (Programa Nuclear Brasileiro, PNB). Rousseff has made no direct public comments about the PNB since the accident in Japan, but Secretary of Science and Technology Aloizio Mercadante reiterated the government's intention to continue the program, launched in 1985 with the inauguration of the Angra 1 power station during the administration of then President José Sarney …


After Fukushima, South America Reassesses Nuclear-Power Push, Benjamin Witte-Lebhar May 2011

After Fukushima, South America Reassesses Nuclear-Power Push, Benjamin Witte-Lebhar

NotiEn: An Analytical Digest About Energy Issues in Latin America

The recent nuclear disaster in Japans tsunami-damaged Fukushima reactor has shaken--but not buried--plans for an atomic energy surge in South America, which right now has just four of the world's 442 nuclear power plants. Prior to the accident, analysts had anticipated something of a nuclear renaissance in South America. Non-nuclear countries like Chile, Venezuela, and Uruguay were seriously flirting with the atomic-energy option, investing public funds in exploratory studies and/or signing nuclear-technology accords with countries like Russia and France. At the same time, Brazil and Argentina--the two South American countries with atomic power facilities already in place--had begun expanding their …


Are Conflicts Hampering Per's Energy And Mining Sectors?, Inter-American Dialogue's Latin American Energy Advisor May 2011

Are Conflicts Hampering Per's Energy And Mining Sectors?, Inter-American Dialogue's Latin American Energy Advisor

Latin American Energy Dialogue, White Papers and Reports

There are currently 200 conflicts over natural resources in Peru, particularly in rural areas where residents complain extractive projects are destroying their lands and that they are unlikely to see many of the economic benefits, Reuters reported May 2, citing Per's human rights office. Those conflicts threaten to derail investments totaling some $40 billion over the next decade, according to the report. Are these tensions likely to crimp Per's energy and mining sectors? Which types of projects face the most strident opposition? How should the next president handle such situations? How would Ollanta Humala and Keiko Fujimori differ in their …


Is Ecuador's Refinery Of The Pacific On Track?, Inter-American Dialogue's Latin American Energy Advisor May 2011

Is Ecuador's Refinery Of The Pacific On Track?, Inter-American Dialogue's Latin American Energy Advisor

Latin American Energy Dialogue, White Papers and Reports

In 2008, PDVSA and PetroEcuador agreed to build the "Eloy Alfaro Delgado" Refinery of the Pacific, which reportedly will be the only high-conversion plant on Latin America's Pacific coast. The facility will require an investment of $12 billion, of which Venezuela and Ecuador have so far committed $3 billion. On March 9, Ecuadorean President Rafael Correa announced that more money would be distributed to accelerate the manufacturing of construction equipment. Is preliminary work on the refinery on track to be ready by 2015? Are the right plans in place for the refinery to attract the necessary investment and who would …


What Trends Are Shaping The Future Of Biofuels?, Inter-American Dialogue's Latin American Energy Advisor May 2011

What Trends Are Shaping The Future Of Biofuels?, Inter-American Dialogue's Latin American Energy Advisor

Latin American Energy Dialogue, White Papers and Reports

Biodiesel production in Argentina this year is expected to climb 60 percent as compared to 2010. Meanwhile, in Brazil, industry leaders have called the biofuels sector "ripe for consolidation" as it needs to increase capacity and the country recently signed cooperation agreements with the United States to advance aviation biofuels. Meanwhile, high food prices have led to criticism that producing biofuels, especially from corn ethanol in the United States, diverts agricultural production from food crops. How will the development of biofuels play out in Brazil and elsewhere in the Americas? What are the most viable solutions for the food vs. …


How Well Is Uruguay's Nascent Oil Sector Advancing?, Inter-American Dialogue's Latin American Energy Advisor May 2011

How Well Is Uruguay's Nascent Oil Sector Advancing?, Inter-American Dialogue's Latin American Energy Advisor

Latin American Energy Dialogue, White Papers and Reports

Uruguay's state-run oil and gas company, ANCAP, announced last month that it discovered the first traces of underground oil in what may be a "promising shale deposit," according to director Juan Gómez. ANCAP is also preparing to launch a new bidding round for offshore blocks in September and a second round in 2012. Gómez has said the new find and the possibility of offshore oil have attracted significant interest by international investors. How promising is future onshore and offshore development in Uruguay? Does the government have the right regulatory structures in place? What more should it be doing to promote …


How Will New Tariffs Affect Venezuela's Oil Industry?, Inter-American Dialogue's Latin American Energy Advisor May 2011

How Will New Tariffs Affect Venezuela's Oil Industry?, Inter-American Dialogue's Latin American Energy Advisor

Latin American Energy Dialogue, White Papers and Reports

On April 21, Venezuelan President Hugo Chávez announced drastic changes to windfall oil tax rates, hiking the tax from 60 percent to 95 percent when oil prices surpass $100 per barrel. The new legislation also raises the taxes to 80 percent when oil prices are between $70-90 per barrel and 90 percent when prices are between $90-100 per barrel. The government has since sought to reassure investors, saying that companies will only pay the higher rates after they recoup their original investment. How are the new taxes likely to affect investment in the country's oil sector in the short- and …


Uruguay Banks On Wind Power, Andrés Gaudín May 2011

Uruguay Banks On Wind Power, Andrés Gaudín

NotiEn: An Analytical Digest About Energy Issues in Latin America

Little more than two years after initiating a wind-energy pilot project, Uruguay has made a decisive commitment to substantially change its energy matrix. In April, besides sealing various agreements, it held a series of invitations for bids to offer the private sector—-national or international—-contracts to build several wind parks in the next four years that will allow the country to add 500 megawatts of energy produced by the generous winds that sweep across almost the entire territory. Since the first project was inaugurated in October 2008 by the Argentine firm Nuevo Manantial, which contributes 10 MW of installed capacity to …


Wind Power Present, Not Prodigious In Chiles Energy Market', Benjamin Witte-Lebhar May 2011

Wind Power Present, Not Prodigious In Chiles Energy Market', Benjamin Witte-Lebhar

NotiEn: An Analytical Digest About Energy Issues in Latin America

Little by little, Chile is plugging wind power into its otherwise conventional electricity grid. So far, however, the sectors contribution to the overall electricity supply remains minimal, leading some analysts to question whether the country's private energy providers are really ready to welcome the proverbial winds of change. Chile added the latest piece of its power puzzle this past February, when French multinational GDF Suez cut the ribbon on five new generators for its Monte Redondo wind park in the Coquimbo Region, roughly 325 km north of Santiago. With the expansion, Monte Redondo now boasts an installed capacity of 48 …


Is Venezuela Facing Another Electricity Crisis?, Inter-American Dialogue's Latin American Energy Advisor Apr 2011

Is Venezuela Facing Another Electricity Crisis?, Inter-American Dialogue's Latin American Energy Advisor

Latin American Energy Dialogue, White Papers and Reports

On April 7, a fire damaged a power line in Venezuela and caused the country's worst blackout since 2009. Top government officials were adamant that Venezuela is now better equipped than in 2009-10 when electricity shortages crimped the economy during a severe drought. However, the recent outage came amid a series of power shortages since March that industry analysts and business owners claim are hampering production. Does the Venezuelan government have the situation under control or is the electricity crisis likely to repeat itself? What steps should be taken to fix the electricity grid? Will the country be able to …


Energía Nuclear En América Latina: Antes Y Después Del Desastre Japonés, Paul Isbell Mar 2011

Energía Nuclear En América Latina: Antes Y Después Del Desastre Japonés, Paul Isbell

Latin American Energy Dialogue, White Papers and Reports

This article begins by outlining the use of nuclear energy in Latin America as compared to other regions of the world. More specifically, it details the history and current output of energy from the six nuclear reactors throughout Latin America. Additionally, it discusses the plans that many countries in the region have to create nuclear energy programs in the future, and the impact that the events in Japan have had on these plans.


How Does The Current Surge In Oil Prices Compare To 2008?, Inter-American Dialogue's Latin American Energy Advisor Mar 2011

How Does The Current Surge In Oil Prices Compare To 2008?, Inter-American Dialogue's Latin American Energy Advisor

Latin American Energy Dialogue, White Papers and Reports

With ongoing tensions in the Middle East, oil prices have soared to heights not seen since before the economic crisis. What is the impact of the surge in oil prices on Latin American countries? Which countries and industries stand to benefit? Which stand to lose? How does the situation compare to the last time prices reached $100 per barrel in 2008? Experts discuss what they think about this topic.


Decree No. 8.097 - Organic Regulation For The Popular Power Ministry Of Electric Energy, Presidente De La República Mar 2011

Decree No. 8.097 - Organic Regulation For The Popular Power Ministry Of Electric Energy, Presidente De La República

Latin American Energy Policies

Determines the organic and funcional structure of the Popular Power Ministry of Electric Energy. Art. 25 states that this Ministry has as one of it's goals the research, creation and implementation of plans for the development of renewable energy resources.


Are Expectations For Colombia's Oil Sector Too Optimistic?, Inter-American Dialogue's Latin American Energy Advisor Feb 2011

Are Expectations For Colombia's Oil Sector Too Optimistic?, Inter-American Dialogue's Latin American Energy Advisor

Latin American Energy Dialogue, White Papers and Reports

In February, Mexican tycoon Carlos Slim said he was actively looking to boost investment in Colombia due to its burgeoning oil industry. Meanwhile, the United States Export-Import Bank approved nearly $1 billion in financing for Colombia's state-run energy company Ecopetrol, identifying the country as one of nine emerging economies that offer the United States a greater opportunity for export sales. Are expectations about Colombia's oil and gas industry justified or overly optimistic? What opportunities does the country offer that make it a desirable place to invest in the energy industry? How can the government boost investment to that sector? How …


Should The Bolivian Government Have Ended Fuel Subsidies?, Inter-American Dialogue's Latin American Energy Advisor Feb 2011

Should The Bolivian Government Have Ended Fuel Subsidies?, Inter-American Dialogue's Latin American Energy Advisor

Latin American Energy Dialogue, White Papers and Reports

On Dec. 26, Bolivian President Evo Morales issued a decree canceling heavy subsidies on gasoline and diesel fuel, citing the heavy preponderance of fuel smuggling across the border, and thus triggered a rise in fuel prices by more than 70 percent. The change was met with widespread protests, riots and a national transport strike. Morales reversed his decision on Dec. 31. Should Morales have ended fuel subsidies in Bolivia? What are the political ramifications for the move and its subsequent reversal? What else can the government do about widespread fuel smuggling? Is the government likely to cut subsidies in the …


Will Shale Gas Transform Argentina's Energy Sector?, Inter-American Dialogue's Latin American Energy Advisor Feb 2011

Will Shale Gas Transform Argentina's Energy Sector?, Inter-American Dialogue's Latin American Energy Advisor

Latin American Energy Dialogue, White Papers and Reports

In December, Repsol YPF announced a 4.5 trillion cubic feet discovery of shale gas in Argentina's Neuquén Basin. According to the company, the find expands YPF's proven reserves from six years to 16 years. What is the potential to exploit shale gas resources in Argentina? How does the recovery of shale gas differ from traditional oil and gas reserves? What new regulations and rules will Argentina need to adopt as a result of the find? Will the shale gas discovery have a significant effect on the country's domestic capacity and its potential to export energy to neighboring countries? Experts discuss …


Bolivia's Lithium Possibly To Be Purchased And Used In Battery Production And Industry In Spain, La Prensa Feb 2011

Bolivia's Lithium Possibly To Be Purchased And Used In Battery Production And Industry In Spain, La Prensa

Latin American Energy Dialogue, White Papers and Reports

This article discusses the Mitsubishi-GS Yuasa group's plans to implement a lithium battery plant in Spain utilizing lithium resources from Bolivia.