Internal carbon and nutrient cycling in Lake Baikal: sedimentation, upwelling, and early diagenesis

Carbon source/sink function of a subtropical, eutrophic lake determined from an overall mass balance and a gas exchange and carbon burial balance

“…Organic matter reaching the surface sediment is easily ingested, mineralized, or resuspended and deposited elsewhere with most likely no organic matter being buried (Fitzgerald and Gardner, 1993), so the average long-term rate of carbon accumulation were calculated (Page et al, 2004). Mass accumulation rates (MAR) were averaged for the samples and were calculated with the relationship (Muller et al, 2005):…”

“…Sediment density (r) was averaged for the samples and calculated from TOC measurements following the equation (Muller et al, 2005):…”

Holocene and Late Glacial sedimentation near steep slopes in southern Lake Baikal

“…Oxidized zones and rates of sedimentation are directly linked to quantity and quality of sedimentary organic matter, as low sedimentation rates allow deeper diffusion of oxygen into sediment pore-water, whereas high sedimentation rates prevent deep oxygen penetration (Mizandrontsev, 1982). Measurements of nutrient fluxes across the sediment/water-interface proved these assumptions with a quantitative interface model of nutrient cycling (Müller et al, 2005) and demonstrated that the thickness of the oxidized zone is time-dependent (Och et al, 2012). Thin oxidized zones atop deep-water cores BAIK00-1 and BAIK08-2 (Figs.…”

“…Research papers of different scientific disciplines have contributed background knowledge on the formation of Lake Baikal and the dynamics of its vast water mass (Goldyrev, 1982;Bezrukova et al, 1991;Shimaraev et al, 1993;Khozhova and Izmest'eva, 1998). It has been shown that biological, physical and geochemical processes all influence biological and geochemical variability in the lake Flower, 1998;Müller et al, 2005;Granina and Callender, 2007;Schmid et al, 2008). Detailed studies of the lake bottom morphology and of composition and age of sediments in the different basins have been used, to further our understanding of processes of sediment formation and accumulation in Lake Baikal (Potrik'eva, 1959;Karabanov et al, 1984;Appleby et al, 1998;De Batist et al, 2002;Colman et al, 2003;Vologina and Sturm, 2009) and to studying past environmental and climate changes (Kuzmin et al, 2000;Bangs et al, 2000;Grachev et al, 2002;Fietz et al, 2005;Mackay, 2007).…”

Lacustrine particle dynamics in high-altitude Estany Redó (Spain) - a high resolution sediment trap study

“…A knowledge of the quantity and quality of sedimenting particles and of the timing of their formation is crucial a better understanding of dynamic sedimentation processes and proxy climate data (Rathke et al 1981;Sturm et al 1982;Ohlendorf & Sturm 2001;Wehenmeyer & Bloesch 2001;Müller et al 2005;Rose & Monteith 2005). However, only automated, high-resolution sequencing traps can detect short-term flux events, caused by floodings, algal blooms, calcite precipitation etc.…”