Skip to main content

Table 1 Results of significant differences (Mann–Whitney U test) between oyster densities on mussel beds in the List tidal basin, based on the comparison of spring data with autumn data from the year before

From: High mortality of Pacific oysters in a cold winter in the North-Frisian Wadden Sea

  LT01 LT02 LT07 LT13
Autumn 2003–spring 2004 0.04 No data 0.50 0.71
Autumn 2004–spring 2005 0.90 0.72 0.03 0.76
Autumn 2005–spring 2006 0.95 0.12 0.53 0.91
Autumn 2006–spring 2007 0.40 0.04 0.02 0.71
Autumn 2007–spring 2008 0.02 0.14 No data 0.30
Autumn 2008–spring 2009 0.58 No data 0.06 0.23
Autumn 2009–spring 2010 0.00005 0.0006 0.0001 0.0001
  1. Significant differences (P < 0.05) are indicated in bold text. For positive or negative changes in oyster densities compare with Fig. 4