Fluctuations of landings and environmental conditions in the north-western Mediterranean Sea

Type Article
Date 2001-03
Language English
Author(s) Lloret J, Lleonart J, Sole I, Fromentin Jean-Marc
Affiliation(s) CSIC, Inst Marine Sci, E-08039 Barcelona, Spain.
Univ Politecn Catalunya, High Sch engn, Dept Stat, E-08028 Barcelona, Spain.
IFREMER, F-34200 Sete, France.
Source Fisheries Oceanography (1054-6006) (Blackwell science), 2001-03 , Vol. 10 , N. 1 , P. 33-50
DOI 10.1046/j.1365-2419.2001.00151.x
WOS© Times Cited 122
Keyword(s) Wind, Rhone River, NAO index, Muga River, Mediterranean fisheries, Gulf of Roses Cape Creus, Gulf of Lions, Ebre River, Box Jenkins models
Abstract Most of the monthly catches and CPUE of 13 studied commercial species in the coastal waters of the north-western Mediterranean were significantly positively correlated with run-off of local rivers (Rhone and Muga) and the wind mixing index during the spawning season, with time lags of less than a year (transfer function analyses). Rhone and Ebre interannual fluctuations in run-off were synchronous and were related to the North Atlantic Oscillation (NAO), river run-offs being negatively correlated to high NAO episodes. The fluctuations of river discharges and the wind mixing index were cyclic but not related. The results showed that enhanced hydroclimatic conditions in the NW Mediterranean were favourable for the productivity of the fish and invertebrate stocks, and suggest the presence of linkage between recruitment of Mediterranean species and local (river discharges, wind conditions) and global (NAO) environmental conditions.
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