Verkkoprofessors oliver phillips and simon lewis from the school of geography contributed to the tropical component of the global study, which. Verkkothe article reports on the scientific research and findings on the amazon rainforest's carbon sink, deforestation, and climate change impacts. Verkkothe tropical forests of amazonia constitute one of the most important ecosystems of the earth. They account for 45% of the world's tropical forest, storing about. Verkkoa study of the impacts of the 2005 drought on amazon forests, a key component of the global carbon cycle. The drought caused large biomass losses, reversing a carbon.