Tag Archives: Natural Resources

Five Ways in which South American Communities Feel the Impact of Climate Change

Valerie GiesenReports by the International Panel on Climate Change (IPCC) and the World Bank show that communities across South America are already feeling the impact of climate change today—and that these are likely to intensify in the future. According to the IPCC, the economies of most Latin American countries depend on agriculture, which means that climatic change and extreme weather events that affect farming also pose a tangible threat to economic prosperity and developmental goals in the region. A 2012 World Bank Report even predicts that South America will be one of the regions hit hardest if temperatures rose by more than the internationally recognised 2°C target. This post will highlight five of the central ways in which South Americans are experiencing the effects of climate change:

1. Temperature: In South America, climate change has led to a variety of temperature changes. While the widely-cited 2007 IPCC report observed an overall 1°C increase in temperature across South America over the past decade, there has been significant regional variation, leading to diverse effects. For instance, Bolivia’s highlands have actually cooled by 1°C over the past five decades, while there is some evidence for rising temperatures in the lowlands. In a 2009 World Bank Report, Drs. Lykke Andersen and Dorte Verner show that the contradictory trends of average temperatures have led to uneven social and economic effects of climate change in Bolivia. They estimate that the cooling experienced in the country’s highlands has reduced income in these areas by about 2–3 percent. In the country’s wealthier lowlands, no such negative trends were observed. This means that in Bolivia changes in temperature affect the population of the comparatively poor highlands disproportionately, compared to the wealthier lowland of the country. Read More »

Three South American Crops that are Endangered by Climate Change

Valerie GiesenIf climate change seemed far away, here are three reasons to reconsider. From basic daily staples to our favourite morning drink, climate change is already affecting crops in South America. The Inter-American Development Bank estimates that Latin America and the Caribbean contribute 11 percent of the value of world food production, making shifts in the region’s agricultural production relevant to global, as well as regional, food security.

1. Potato: According to the International Potato Centre (CIP), the potato is the third most widely consumed food crop in the world, with annual production approaching 300 million tons. According to a 2012 report by the 8th World Potato Congress, South American potato production reached slightly over 14 million tons in 2010. However, production in South America has come under climate-change induced stress. In 2012, the Consultative Group on International Agricultural Research (CGIAR) reported that potato production in the Andes is increasingly threatened by late blight disease, which caused the severe Irish potato famine in the 1850s. The Integrated Pest Management Program at Cornell University outlines the course of the disease: Late blight is particularly severe under warm, humid conditions. it is triggered by the ‘oomycete pathogen’, which is a microorganism that produces millions of spores from infected plants. These survive from one season to the next in infected potatoes and travel through the air causing new infections if the weather is sufficiently wet. Infected potatoes develop dark lesions on the surface and – in many cases – rot from the inside. Read More »

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