R. Bras. Zootec.22/Mar/2021;50:e20200185.
The neglected contribution of mound-building termites on CH4 emissions in Brazilian pastures
Dener Márcio da Silva Oliveira
, Eloá Moura Araújo
, Elizio Ferreira Frade Junior
, Laisa Gouveia Pimentel
, Carlos Eduardo Pellegrino Cerri
ABSTRACT
Based on previous reports, our study aimed to obtain the first estimate on the contribution of termite mounds to CH4 emissions in Brazilian Cerrado pastures. We estimated that termite mounds occupy an area larger than 200,000 ha in degraded pastures, an important loss of grazing area considering the current scenario of land-use change of pastures to other crops in Brazil. Moreover, mound-building termites in degraded pastures may be responsible for CH4 emissions greater than 11 Mt CO2 eq. yr−1, which would notably affect the greenhouse gases (GHG) balance of grass-fed cattle production in Brazil. In this sense, it is urgent to conduct field-scale studies about the CH4 emissions by mound-building termites in pastures and its contribution to the C footprint of Brazilian beef.
Keywords: biogenic CH4; Brazilian Cerrado; greenhouse gases; pasture degradation
