Naslov
Spatial variability in species diversity and composition of demersal fish assemblages in the northern Mediterranean Sea

Autori
Mérigot, Bastien ; Gristina, Michele ; Gaertner, Jean-Claude ; Peristeraki, Nota ; Bertrand Jacques ; Gil de Sola, Luis ; Manfredi, Chiara ; Kallianiotis, Argyris ; Maiorano, Porzia ; Follesa, Maria Cristina ; Jadaud, Angelique ; Krstulović Šifner, Svjetlana

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Our Oceans, Our Future / - , 2011, 44-44

Skup
World Conference on Marine Biodiversity

Mjesto i datum
Aberdeen, Ujedinjeno Kraljevstvo, 26.09.2011. - 30.09.2011

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
demersal fish assemblages; spatial variability; Mediterranean Sea

Sažetak
Faced to the actual global change, it appears to be of utmost importance to quantify and monitor the variability of community diversity and composition. In the present work, we have analysed the reproducibility of the empirical relationships between 11 diversity indices related to four major facets of species diversity (species richness, rarity, evenness and species taxonomy) in order to determine whether there is a general pattern of redundancy or complementarity that holds across years, areas and spatial scales. Variation of species composition at these different situations was investigated using the STATIS-CoA multitable method. We have applied this approach to groundfish diversity through the analysis of 2404 trawl hauls collected during the first large-scale annual surveys of the MEDITS program carried out using a single sampling design throughout the northern Mediterranean Sea. Our results highlight that, in contrast to what is still the usual practice, monitoring diversity should not be based on only one or two of the most widely used facets, even at large scale. Finally, the strong reproducibility of the relationships between indices we observed offers a basis for discussion of the feasibility and relevance of proposing a general shortlist of indices for monitoring diversity at different management scales.

Izvorni jezik
Engleski

Znanstvena područja
Biologija, Poljoprivreda (agronomija)

POVEZANOST RADA