Organic matter contents for the two sediment layers.

<p>Bars denote standard deviations. A: carbohydrates (µg g⁻¹), B: lipids (µg g⁻¹), C: proteins (µg g⁻¹), D: labile P (µg g⁻¹), E: organic carbon (OC, mg g⁻¹), F: total nitrogen (N, mg g⁻¹). Stars denote significantly different values for the 0–2 cm and the 2–10 cm sediment layers at each station (one-way ANOVA, NK post-hoc test, p<0.05).