Open Access

Table 2

Summary of the GAMs fitted to the diatom principal component (PC) scores. Descriptors significantly explaining variance are presented in descending order of their contribution to the GAMs and represented as follows: p-value < 0.05; ⁎⁎p-value < 0.01; ⁎⁎⁎p-value < 0.001. DESCRIPTORS: total phosphorus (TP), conductivity (Cond), nitrate (NO3), pH, temperature (T), dissolved oxygen (DO), dissolved organic carbon (DOC), five-day biological oxygen demand (BOD5). COLUMN LABELS: proportion of variance (%; variance explained by the PCA axis), deviance explained (%; deviance is a measure of residual variation around the GAMs analogous to the sum of squares in linear regression), AICC (Akaike Information Criterion), LogLik (log-likelihood), df (degrees of freedom).

PCA axes Proportion of variance Deviance explained AICC LogLik df Descriptors
PC1 31.4 24.2 6403 −3174 27.3 TP⁎⁎⁎
Cond⁎⁎⁎
NO3−⁎⁎⁎
pH⁎⁎⁎
PC2 24.6 27.1 5972 −2952 32.7 TP⁎⁎⁎
Cond⁎⁎⁎
T⁎⁎⁎
pH⁎⁎⁎
DO⁎⁎⁎
PC3 11.1 29.2 4655 −2303 23.6 TP⁎⁎⁎
pH⁎⁎⁎
T⁎⁎
DOC⁎⁎
PC4 9.8 17.9 4702 −2326 24.6 NO3−⁎⁎⁎
T⁎⁎⁎
BOD5⁎⁎
PC5 6.2 11.4 4111 −2023 31.9 Cond⁎⁎⁎
TP⁎⁎⁎
pH⁎⁎⁎
DOC⁎⁎⁎
BOD5⁎⁎⁎

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.