FN Archimer Export Format
PT C
TI Density dependence in the spatial behaviour of anchovy and sardine across Mediterranean systems
BT 
AF GIANNOULAKI, Marianna
   PETITGAS, Pierre
   BARRA, Marco
   TUGORES, Pilar
   VASAPOLLO, C.
   IGLESIAS, M.
   LEONORI, Iole
   DE FELICE, Andrea
   BONANNO, A.
   BASILONE, G.
   MAZZOLA, Salvatore
   BIGOT, Jean-Louis
   MACHIAS, Athanassios
   PYROUNAKI, Maria M.
AS 1:1;2:2;3:3;4:4;5:5;6:4;7:5;8:5;9:3;10:3;11:3;12:6;13:1;14:1;
FF 1:;2:PDG-RBE-EMH;3:;4:;5:;6:;7:;8:;9:;10:;11:;12:PDG-RBE-HM-RHSETE;13:;14:;
C1 Hellenic Centre for Marine Research, Institute of Marine Biological Resources and Inland Waters, PO Box 2214, GR 71003, Iraklion, Greece
   Institut Français de Recherche pour l'Exploitation de la Mer, BP 21105, F- 44311 cedex 03, Nantes, France
   Istituto per l'Ambiente Marino Costiero, Consiglio Nazionale delle Ricerche, Capo Granitola, 91021, Campobello di Mazara (TP), Italy
   Instituto Español de Oceanografia, Centro Oceanográfico de Baleares, Muelle de Poniente s/n, 07015 Palma de Mallorca, Baleares, España
   Istituto di Scienze Marine, CNR, Largo Fiera della Pesca, 60125 Ancona, Italy
   IFREMER, Boulevard Jean Monnet, B.P. 171 34203, Sète Cedex, France
C2 HELLEN CTR MARINE RES, GREECE
   IFREMER, FRANCE
   CNR, ITALY
   IEO, SPAIN
   CNR, ITALY
   IFREMER, FRANCE
SI NANTES
   SETE
SE PDG-RBE-EMH
   PDG-RBE-HM-RHSETE
UR https://archimer.ifremer.fr/doc/00114/22549/20245.pdf
LA English
DT Poster
DE ;anchovy;Mediterranean Sea;sardine;spreading area index
AB A spatial indicator—the spreading area index—is used to describe anchovy and sardine spatial distribution in relation to biomass variation and to look for ecosystem differences within the Mediterranean basin. Specifically, the variation in the spreading area index in relation to biomass was examined for different areas of the Mediterranean Sea (i.e. Aegean Sea, western Adriatic Sea, Strait of Sicily, Gulf of Lion, and Spanish Mediterranean waters). In order to capture the spatial variability of the population at different levels of fish density, acoustic survey data for the years of highest, lowest, and intermediate abundance were used. In a subsequent step standardized values of spreading area and biomass were estimated to allow comparisons.  Results showed pronounced area differences. A significant relationship was revealed in the case of anchovy for areas with extended continental shelf (i.e. Aegean Sea, Adriatic Sea, and Gulf of Lion), indicating an increase in biomass with an increase in the spreading area. No relationship was found for areas dominated by narrow continental shelf and strong currents (i.e. Spanish Mediterranean waters and the Strait of Sicily). With regard to sardine, an increase in biomass was followed by an increase in the spreading area when estimates from the Aegean Sea, the Adriatic Sea, and the Strait of Sicily were considered together. The relationship was even more Abstracts–Theme Session B 9 pronounced when analysis was limited to the Aegean Sea and the Strait of Sicily. No relationship was found for the Spanish Mediterranean waters and the Gulf of Lion. This clearly implies that spatial indicators should be integrated into ecosystem management, taking into account that they can be area‐ or ecosystem‐dependent.
PY 2012
ID 22549
ER

EF