predominance of very fine sand (Φ between 3 and 4) and
medium sand (Φ between 1 and 2). Coarse sand (Φ between
0 and 1) predominated, in some periods, only at St6. The
textural changes were not significant (F(5, 27) = 0.33, P =
0.886) along the estuary profile (Fig. 2D). Similarly to the
organic-matter content, the highest proportion of fine
sediments (silts and clays) was observed at St1, similarly
(P > 0.05) for St6, and different from the other stations
(F(5, 27) = 2.55, P = 0.051) (Fig. 2E). The highest content of
fine sediments (32%) was measured in St1 in January 2009,
after a period of heavy rainfall (over 200 mm).