Page 1 : Results 1 to 5 on 27 Definition of climate variability
and long-term trends in tropical regions is a major element for
establishing scenarios for the future evolution of climate and
ecosystems in these particularly fragile environments. The
Amazon Basin is emblematic of this issue, owing to its key role
in Earth’s climate and to its tropical rainforest, the most
extensive in the world. IRD researchers and their partners 1
have conducted the first analysis of long-term climatic
variations over five Amazon Basin countries (Brazil, Peru,
Bolivia, Colombia and Ecuador). In 40 years, over the basin as a
whole a clear decline in precipitation was found. There was an
estimated relative decrease of 9% between 1975 and 2003. These
studies yielded clues for a better understanding and prediction
of variations in the climate upon which the “lung of the Earth”
depends. Leishmaniasis is a frequent health problem for the
Chayahuitas, as for other Amazonian communities, particularly in
Bolivia, Peru, Ecuador and Col