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Threats seen to Colombia’s environment

WEST LAFAYETTE, IN – After more than five decades of hostility that cost hundreds of thousands of lives, Colombia has embarked on a new era of peace. But the peace brings its own risks: a chaotic transition could leave the country’s richly diverse forests unprotected and, ultimately, lead to a loss of resources and species that would harm rural populations.
Scientists are urging the Colombian government to plan for the future of its forests as soon as possible.
Colombia and the Revolutionary Armed Forces of Colombia (FARC) implemented a peace treaty in 2017, putting an end to more than a half century of fighting. Now, scientists are worried about the effects on the country’s important ecosystems as people pushed to urban areas by violence return to their rural homes and government and private interests look to the forests as prime opportunities to expand mining and agricultural interests.
During its existence, FARC unintentionally staved off deforestation and protected significant ecosystems, said Jeff Dukes, a Purdue professor in the Departments of Forestry and Natural Resources and Biological Sciences, and co-author of a paper that addresses the issues facing Colombia’s environment.
“Fighters were growing drugs there but in general keeping out large-scale conversion of land,” Dukes said. “When you have a major political change like this, there’s the possibility that you’ll get much more pressure for development on the land. Having peace is a good thing, but if there isn’t a lot of thought and protection for forests given up front, there could be massive biodiversity loss and loss of resources throughout Colombia.”
A paper published in the journal Frontiers in Ecology and the Environment lays out the concerns about the forests, which cover about 460,000 square kilometers, or 30 percent of the country. The findings are based on a 2016 meeting in Medellín, Colombia, organized by Purdue biological sciences graduate student Alejandro Salazar, that brought together climate and environmental scientists from Purdue, several Colombian universities — Universidad de Antioquia, Universidad EIA, EAFIT University and Universidad Nacional de Colombia —  as well as Columbia University, the University of Exeter, the University of Miami and the Max Planck Institute.
Colombia — like the rest of the world — is also experiencing changes to its climate, including rising temperatures and reductions in precipitation. Deforestation could further dry out the climate and threaten the habitats of many vulnerable animal species.
“If the peace agreement makes access to forest resources more feasible, deforestation rates and habitat fragmentation could spike,” the authors said. “As natural habitat is fragmented or lost, species will face elevated risks of population decline and extinction.”
Forest clearing has already increased since the peace agreement was signed. In 2016, deforestation jumped 44 percent in Colombia. The authors said it will be up to the government to balance ecosystem needs with the desire to utilize land that had been occupied by rebels for so long. They suggest increasing environmental monitoring to understand how ecosystems are changing and using that information to develop strategies for protecting the country’s natural resources.
“Based on other examples of political transitions, Colombia would benefit from thinking very carefully about what it wants its environmental future to look like and what sort of environmental stewardship needs to take place,” Dukes said.
Purdue’s Qianlai Zhuang, professor of agronomy and earth, atmospheric, and planetary sciences, and Maria Uribe, a graduate student in ecological sciences and engineering, were also authors on the paper and contributed to the organization of the 2016 meeting in Colombia. Funding for the project came from: Universidad de Antioquia, Universidad Eafit, the Purdue Research Foundation, ICETEX, the Purdue Climate Change Research Center, the Colombia-Purdue Initiative and the Colombian Student Association at Purdue. Other partial funding was from Colciencias, the Ayudar Foundation from the University of Exeter’s College Benefactors and the U.S. Department of Agriculture’s National Institute of Food and Agriculture.