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Table 2 Coefficients of between-species Spearman correlations in various years of the 1979–2013 period for the survival (at age of 0.3 to 0.8, 0.8 to 1.8, and over 1.8 year)

From: Is food supply for shellfish-eating birds in the western Wadden Sea affected by the between-species synchrony in year-to-year fluctuations of bivalve population parameters?

Age (years) 0.3–0.8 0.8–1.8 1.8+
CerastodermaMytilus + 0.21 (25) − 0.05 (9) − 0.29 (8)
CerastodermaMya + 0.34 (30) − 0.10 (9) − 0.10 (8)
CerastodermaLimecola + 0.15 (37) + 0.22 (21) + 0.14 (16)
MytilusMya + 0.36 (19) − 0.54 (6) − 0.62 (5)
MytilusLimecola − 0.21 (22) − 0.44 (11) − 0.13 (15)
MyaLimecola + 0.20 (29) + 0.18 (10) 0.08 (15)
  1. The numbers of years (n) in each comparison is indicated between brackets, being the number of years in which the 2 species involved were sufficiently numerous (> 5 m−2 at the start of the period). There were no significant correlations