Table 1: Description of the experimental treatments. Treatment Tank structure Aeration Factor 1: Factor 2: Factor 3: no. Redox regime Sediment Particle size depth 1 Plenum Airlift pump Oxic 2 cm Fine 2 Plenum Airlift pump Oxic 2 cm Medium 3 Plenum Airlift pump Oxic 4 cm Fine 4 Plenum Airlift pump Oxic 4 cm Medium 5 No plenum Airstone Oxic-anoxic 2 cm Fine 6 No plenum Airstone Oxic-anoxic 2 cm Medium 7 No plenum Airstone Oxic-anoxic 4 cm Fine Airstone Oxic-anoxic 8 No plenum 4 cm Medium Fine particle size = 125-250 Medium particle size = 250-500 μm; μm Table 2: Definition of sea cucumber behaviour categorised into burial state and activity according to Wolkenhauer (Wolkenhauer 2008). Behaviour Definition Burial state Buried Entire body under the sediment surface Semi buried >50% of the body under sediment surface On the surface Entire body on surface sediment’s Activity Resting Animal is inactive with no movement
Table 1: Description of the experimental treatments. Treatment no. Tank structure Aeration Factor 1: Redox regime Factor 2: Sediment depth Factor 3: Particle size 1 Plenum Airlift pump Oxic 2 cm Fine 2 Plenum Airlift pump Oxic 2 cm Medium 3 Plenum Airlift pump Oxic 4 cm Fine 4 Plenum Airlift pump Oxic 4 cm Medium 5 No plenum Airstone Oxic-anoxic 2 cm Fine 6 No plenum Airstone Oxic-anoxic 2 cm Medium 7 No plenum Airstone Oxic-anoxic 4 cm Fine 8 No plenum Airstone Oxic-anoxic 4 cm Medium Fine particle size = 125-250 μm; Medium particle size = 250-500 μm Table 2: Definition of sea cucumber behaviour categorised into burial state and activity according to Wolkenhauer (Wolkenhauer 2008). Behaviour Definition Burial state Buried Entire body under the sediment surface Semi buried >50% of the body under sediment surface On the surface Entire body on sediment’s surface Activity Resting Animal is inactive with no movement
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