Fig. 3a,b. Ordination biplot for Principal Component Analysis based on
(A) species identity and (B) the accuracy of the measurement.
Reproducibility (inter-gauger agreement)
–
The Intraclass Correlation Coefficients (ICCs) indicated that the
reproducibility of the examined 21 morphometric characters varied
between R=0.872 and R=0.471 (mean R=0.690) when the inter-gauger
agreement was considered across the 11 gaugers (Table 2).
Reproducibility of 16 characters out of the total 21 were acceptable.
Five morphometric traits (EL, FRS, NOL, PoOC, PPL) were found to be
slightly reproducible, with intraclass correlation coefficient (R)
scores between 0.471 to 0.526 (Table 2). These scores belong to
physically smaller traits in the observed character pool, hence we
examined to what extent absolute character size affects the
reproducibility. The general linear model returned no significant
correlation (R = 0.3617, p = 0.1071) between the trait size and ICC
scores.
Table 2. Repeatability scores (R) calculated for each character.