Preprint volume - SIBM

Pre-print Volume - Oral presentations
Topic 1: BIODIVERSITY AND CONSERVATION SCIENCE: CONTRIBUTING TO MANAGEMENT
Fig. 1 - Zonation of the ‘Isola di Bergeggi’ MPA and position of sampling sites.
Zonazione dell’AMP “Isola di Bergeggi” e posizione dei siti di campionamento.
(Fig. 2) shows that samples collected by the two techniques stand into clearly different
groups and a much higher variability is observed among replicates from quadrats,
compared to replicates from PITs, also confirmed by the Dispersion Coefficient. The
SIMPER analysis, finally, shows that the only relevant difference between the two
sampling methods is represented by the percentage of bare substrate, that appears
relevant only in PIT samples.
When comparing cover data with frequency data from quadrat samples, the MDS
plot (Fig. 3) shows that replicates of the two descriptors are similarly dispersed in
space and are often coincident.
41 st S.I.B.M. CONGRESS Rapallo (GE), 7-11 June 2010
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