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. 2015 Jul 9;112(30):E4065–E4074. doi: 10.1073/pnas.1421946112

Table S6.

Contingency table showing the interaction between decadal trends in phenology and larval abundance

Decadal trends in phenology Decadal trends in mean abundance
Increase No change Decrease Total
Earlier 7 (7.84) 8 (8.24) 5 (3.92) 20
No change 11 (8.63) 8 (9.06) 3 (4.31) 22
Later 2 (3.53) 5 (3.71) 2 (1.76) 9
Total 20 21 10 51
Test results: χ2 = 2.7; df = 4; P = 0.62

The number of fish phenophases observed in each category is shown above. Numbers in parentheses indicate expected values if phenophases were randomly assigned to each category. The χ2 test of independence was performed using the N − 1 adjustment for small sample size (88).