Table 2.

Mean content of organic carbon (OC) in sediments in two basins of the Mar Piccolo and the estimated burial rates in surface sediments, and during eutrophic and oligotrophic phases. MAR, mass accumulation rates of dry sediments. Assuming the same MAR for all sites in each basin and uncertainties of means of OC contents at 1 standard deviations (σ), the propagated uncertainties OC burial (CV) are between 25 and 33%

1st basin		Mean OC		MAR		OC burial rate
Approximative period		mg g−1	σ	g cm−2y−1	σ	g m−2y−1	σ	CV
2005–2013	Recent 0–2 cm	33	10	0.15	0.01	49	15	31%
≈1930–2013	Eutrophic	30	9	0.15	0.01	45	14	30%
Before ≈1930	Oligotrophic	20	5	0.15	0.01	30	7	25%
2nd basin		Mean OC		MAR		OC burial rate
Approximative period		mg g−1	σ	g cm−2y−1	σ	g m−2y−1	σ	CV
2005–2013	Recent 0–2 cm	30	6	0.17	0.04	50	16	32%
≈1930–2013	Eutrophic	28	5	0.17	0.04	47	29	29%
Before ≈1930	Oligotrophic	11	3	0.17	0.04	19	6	33%