Environmental Thermal Conditions Related to Performance, Dynamics and Safety of Logging in the Brazilian Amazon

The Amazon rainforest covers an area of about 50% the Brazilian national territory, which consists mainly upland rainforests that are generally poorly managed, because low investment in technology, planning, operations and manufacturing. Logging activities require a large contingent heavy machinery intense physical workload from operators crews. thermal comfort at work tropical regions is between 20 24°C; however, Central daily average temperature exceeds 28°C. sum these adverse factors leads to common denominator: quality logging lead unsustainable forest management. objective this study was investigate influence environmental conditions on performance, rest breaks, dynamics safety workers involved operations, as well understand better their interactions. data collected following activities: felling, pre-skidding, skidding landing operations. These variables were analyzed using PCA analysis, MANOVA multiple linear regression. productivity breaks strongly influenced by mechanical interruption time workday. We concluded availability most influential factor performance In addition, conditions, bonus payments showed influence. To less extent, there workers, resulted higher depending operation involved. This observed with (felling pre-skidding). Moreover, tree volume had significant impact chainsaw operator, also species factor, Hymenolobium modestum. Lastly, improvements working such appropriate clothing, job rotation scheduled would greater worker well-being increased labor safety. turn, greatly contribute overall management sustainability economic development region.