“…While <8% of the pristine Brazilian Atlantic forest remains (Myers, Mittermeier, Mittermeier, da Fonseca, & Kent, ), several important freshwater ecosystems in this biome are under threats by human‐mediated changes in land use, mainly related to deforestation and changes in the frequency and intensity of precipitation events (Roland et al., ; Soares‐Filho et al., ). Land use transformation and the disruption of biogeochemical cycles may change inputs of dissolved nutrients and organic matter into the lake (M. Pinheiro, Carvalho, Arruda, & Guilherme, ; Vitousek, Mooney, Lubchenco, & Melillo, ), consequently affecting biogeochemical processes such as gross primary production (GPP), community respiration ( R ) and the balance of these two, the net community production (NCP = GPP– R ), which are commonly referred to as lake metabolism (Hanson, Bade, Carpenter, & Kratz, ; Solomon et al., ; Staehr et al., ). Furthermore, lake metabolism is believed to be a good sentinel of climate changes.…”