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Table 1 Overview of most important variables for each experimental date

From: Length- and weight-dependent clearance rates of juvenile mussels (Mytilus edulis) on various planktonic prey items

Year Date Temp (°C) Phyto (×103 cells mL−1) Treatment N Control N N mussels 100 L−1 Mean length (mm) ± SD Clearance rate measured
Bacteria Pico and nano Ciliates
Mesocosm experiments
2010 21 June 18 7.9 ± 2.1 3 2 0.4 1.71 ± 0.72   ν ν
5 July 21 36.5 ± 1.9 3 2 2.0 3.18 ± 2.08   ν  
19 July 20 11.9 ± 2.2 3 2 1.2 4.60 ± 2.58   ν  
3 August 19 52.5 ± 9.2 3 2 1.1 6.93 ± 2.17   ν ν
21 September 15 2.3 ± 0.9 3 2 14 13.27 ± 4.42    ν
13 October 13 24.7 ± 2.8 3 2 11 15.32 ± 6.34   ν  
2011 28 June 19 16.1 ± 0.6 3 2 5.3 8.15 ± 2.90 ν ν ν
12 July 19 32.4 ± 1.1 3 2 23 11.81 ± 4.27 ν ν ν
27 July 18 33.0 ± 0.6 2 2 13 13.49 ± 5.58 ν ν ν
9 August 15 42.7 ± 6.5 2 2 31 17.49 ± 7.18 ν ν ν
7 Septembera 16 14.1 ± 18.2 2 2 78 20.04 ± 6.00 ν ν ν
Laboratory experiments
2012 5 June 16 50.5 ± 17.2 2 2 0.3 3.17 ± 0.73 ν ν  
5 June 13 40.3 ± 13.1 2 2 0.2 1.48 ± 0.49 ν ν  
13 June 16 7.9 ± 0.7 2 2 1.0 4.60 ± 0.54 ν ν  
13 June 17 14.8 ± 7.9 2 2 0.7 3.06 ± 0.44 ν ν  
14 June 17 22.0 ± 0.8 2 2 0.2 2.14 ± 0.42 ν ν  
19 June 16 19.8 ± 12.6 2 2 1.0 4.96 ± 0.27 ν ν  
20 June 12 27.7 ± 21.2 2 2 1.3 6.57 ± 0.63 ν ν  
27 June 14 12.3 ± 0.8 2 2 1.0 4.20 ± 0.20   ν  
27 June 15 12.6 ± 0.5 1 1 1.3 5.77 ± 0.23   ν  
27 June 15 11.8 ± 0.9 1 1 1.3 7.16 ± 0.28   ν  
28 June 15 11.9 ± 1.1 1 1 2.1 8.41 ± 0.24   ν  
11 July 17 39.8 ± 0.8 1 1 2.5 7.40 ± 0.34 ν ν  
11 July 16 40.3 ± 2.0 1 1 2.5 10.61 ± 0.35 ν ν  
12 July 14 32.1 ± 1.7 2 2 3.3 12.03 ± 0.36 ν ν  
7 August 21 75.6 ± 4.2 1 1 3.6 13.48 ± 0.42 ν ν  
8 August 21 70.5 ± 3.5 2 2 7.1 15.03 ± 0.30 ν ν  
5 September 20 56.4 ± 1.4 1 1 10 20.20 ± 0.43   ν  
5 September 20 49.5 ± 1.0 1 1 10 25.37 ± 0.30   ν  
5 September 19 49.5 ± 2.1 4 4 10 25.52 ± 0.21   ν  
  1. Temp is the average water temperature during the experiment, Phyto is the average number of phytoplankton cells (pico- and nanophytoplankton) as counted with the flow cytometer in 103 cell per millilitre, N treatment and N control give the number of mesocosms incubated with mussels or kept as control respectively. In 2012, an experiment was sometimes repeated with the same mussels using new sea water; this is than indicated by a two. On the last experimental date in 2012, the average of four separate experiments with four individual mussels is given. The number of mussels present per experiment is given as the number of mussels per 100 L of water (100 L−1). Mean length gives the average shell length in millimetres of the juvenile mussels used per experiment. The last three columns indicate whether clearance rates were measured for each particular prey item on each date
  2. aMussels originated from a different location than the artificial collector