Abstract Differences in seaweed assemblages' structure (species abundance, species density and diversity) were examined in two habitats, urchin barrens and upright seaweed beds on the Canarian Archipelago (eastern Atlantic ...

Social organization is widespread; even largely solitary species must organize themselves to enable contacts with mates and reduce competition with conspecifics. Although the forms of social structure can be subtle in ...

* Introduced species can have profound direct ecological impacts on native species, yet their potential indirect effects remain relatively unexplored. For instance, introduced predators may directly affect some native ...