Results of variation partitioning.

Results of variation partitioning on the log-transformed abundances of yellow perch larvae per square meter in the three study years among three spatial scales. Pure directional components are represented by Asymmetric Eigenvector Maps (AEM), whereas pure non-directional ones are represented by Moran Eigenvector Maps (MEM). The linear trend (TREND) is included in the non-directional component at the broad scale. Fractions are expressed as percentages of the total variation, computed from adjusted coefficient of multiple determination (R2adj). Asterisks indicate pure fractions that are significant at the 0.05 significance level. Results are presented separately by spatial scale. (a) North shore; (b) South shore.