Effects of layer (vertical position in the sediment), length of exposure (time after tidal recession; Expos) and treatment (shorebird present or excluded; Treat) on abundance (individuals/m²; square root transformed) of <i>Corophium volutator</i> adults sized 4–6 mm and >6 mm in an experiment at Pecks Cove in 2007.

<p>Results are from an AR1 linear mixed model. The numerator and denominator degrees of freedom (df) are presented. When interaction terms were significant, main effects were not interpreted. Significant main effects (i.e. not part of an interaction) are in bold.</p><p>Effects of layer (vertical position in the sediment), length of exposure (time after tidal recession; Expos) and treatment (shorebird present or excluded; Treat) on abundance (individuals/m²; square root transformed) of <i>Corophium volutator</i> adults sized 4–6 mm and >6 mm in an experiment at Pecks Cove in 2007.