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. 2015 May 19;3:e973. doi: 10.7717/peerj.973

Table 5. Differences in frequency of occurrence for simultaneous-collection and same-season strategies.

Results from two-tailed significance tests (paired t-test) to evaluate mean differences in frequency of occurrence of birds from two orders identified with point count and ARU methods. Comparisons were made separately for each assessment strategy. Significant relationships are indicated in bold.

Strategy Order n Point count ARU t-statistic df p-value
Simultaneous-collection
Piciformes 7 0.029 0.014 6.000 6 <0.001
Passeriformes 26 0.156 0.159 −0.498 25 0.623
Same-season
Piciformes 7 0.279 0.257 0.333 6 0.751
Passeriformes 36 0.342 0.408 −2.646 35 0.012