Wagner F. Magalhães

TL;DR: The structure of the benthic macrofaunal assemblages of the estuarine portion of Paraguacu River, NE, Brazil, and its relationship with surface sediment characteristics (trace metals, PAHs, nutrients and grain size) and physical variables were investigated at ten stations on two contrasting occasions, summer (dry season) and winter (rainy season) as discussed by the authors.

TL;DR: It is suggested that the relationships between structure and function ofpolychaete assemblages might provide a measure of the resilience of estuarine conditions; estuaries with a high redundancy in the trophic role of polychaetes might recover faster from disturbance and retain more natural ecological functions than those estuary with low or no redundancy.

TL;DR: In this paper, the effects of urbanization on resident biota are not considered in this classification, and there is a need for studies to validate the use of biological indicators that take into account the spatial and temporal variation of the biota, so as to arrive at a complete assessment of the urbanization impacts on exposed sandy beach.

TL;DR: The species Timarete oculata, originally described from Brazil and lumped into the Timaretes filigera species complex, is herein revalidated and redescribed.