What drives conversion of tropical forest in Carrasco Province, Bolivia?

Article Abstract:

The conversion of closed forest (CCF) in Carrasco Province in Bolivia is supervised by a series of four midresolution satellite images and five factors for CCF namely land tenure regime, distance from road, distance from settlements, topography and soil suitability for farming are tested. It was found that three factors, distance from roads, distance from settlement and land tenure regime were important, the national park and untitled land showed more CCF, and also the more the distance less was the degree of CCF.

Guided missiles and space vehicles, Guided Missile and Space Vehicle Manufacturing, Earth Sciences Satellites, Observations, Mesocosms, Closed experimental ecosystems, Rain forests, Closed ecological systems

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Environmental impact of small-scale and artisanal gold mining in southern Ecuador

Article Abstract:

Research indicates that contamination of rivers in southern Ecuador is due almost entirely to small-scale gold mining, which discharges metalloids and cyanide into rivers as mining and processing waste. Improved water-quality standards and increased enforcement of existing environmental laws are recommended; enabling small-scale miners to become larger for better management practices is also discussed.

Evaluation, Gold industry, Environmental policy, Mineral deposits, Mines and mineral resources, Mining, Gold miners

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Glacier evolution in the tropical Andes during the last decades of the 20th century: Chacaltaya, Bolivia, and Antizana, Ecuador

Article Abstract:

Research indicates that glacier ablation has significantly increased since 1990, according to data drawn from Bolivia's Chacaltaya Glacier and Ecuador's Antizana Glacier. Ablation has occurred at rates 3 to 5 times faster than in previous decades, and is significantly affected by El Nino phases; it is possible that smaller glaciers in the region may disappear by the year 2010.

Research, El Nino, El Nino Current, Andes, Glaciers, Mountain ecology

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