The organic carbon budget of an oligotrophic temperate peatland lake

Lakes play a key role in the global carbon cycle, transporting, processing and storing organic (OC) along land-ocean aquatic continuum. There are, however, surprisingly few complete lake OC budgets, particularly for certain types geographical areas. An budget Lough Feeagh (Ireland), an oligotrophic, peatland temperate oceanic location, was estimated one year using both direct measurements elements calculated from literature. It constructed as simple mass balance model that constrained rates. The total input to during 2017 be 2544 t C, of which it 51% imported dissolved (DOC) surface water, 4% ground 1% rainwater, 3% fixed net ecosystem production. remaining 41% carried into particulate (POC) water. C exported 2892 46% 11% were DOC POC water outflow, respectively, 26% deposited sediment 17% mineralized emitted CO2 atmosphere. results highlight substantial volume turned over study period. Moreover, emphasizes how lakes temperate, humic systems, common on western edge Europe, are important fate mobilized their catchments.