The aims of the present study were: (1) to characterise the abundance of conspicuous, intertidal species associated to defence structures along the Italian shores of the North Adriatic Sea and (2) to identify the scales of discontinuity in the distribution of species. The study was carried out in May 2000 at 8 locations, from Trieste south to Ancona. Assemblages were dominated by mussels and ephemeral green algae. Filamentous algae and limpets were also frequent, but their abundance was variable among locations. The distribution of species was heterogeneous. At small (1 to 10s of m, distance among plots) and medium (10s to 100s of m, distance among sites) scales differences reflected variations in the relative abundance of species rather than composition. Conversely, differences in species composition were observed among locations, with a trend of increasing species richness from north to south
Effects of coastal defence structures on the distribution of hard-bottom species
Airoldi L;
2003
Abstract
The aims of the present study were: (1) to characterise the abundance of conspicuous, intertidal species associated to defence structures along the Italian shores of the North Adriatic Sea and (2) to identify the scales of discontinuity in the distribution of species. The study was carried out in May 2000 at 8 locations, from Trieste south to Ancona. Assemblages were dominated by mussels and ephemeral green algae. Filamentous algae and limpets were also frequent, but their abundance was variable among locations. The distribution of species was heterogeneous. At small (1 to 10s of m, distance among plots) and medium (10s to 100s of m, distance among sites) scales differences reflected variations in the relative abundance of species rather than composition. Conversely, differences in species composition were observed among locations, with a trend of increasing species richness from north to southPubblicazioni consigliate
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