http://www.cnr.it/ontology/cnr/individuo/prodotto/ID298032
Fluctuations of biomass of sardines (Sardina pilchardus, Walb.) in the Adriatic Sea (Contributo in atti di convegno)
- Type
- Label
- Fluctuations of biomass of sardines (Sardina pilchardus, Walb.) in the Adriatic Sea (Contributo in atti di convegno) (literal)
- Anno
- 1999-01-01T00:00:00+01:00 (literal)
- Alternative label
Santojanni A., Arneri E., Belardinelli A., Cingolani N., Giannetti G. (1999)
Fluctuations of biomass of sardines (Sardina pilchardus, Walb.) in the Adriatic Sea
in XIII congresso AIOL, Portonovo (Ancona), 28-30 settembre 1998
(literal)
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- Santojanni A., Arneri E., Belardinelli A., Cingolani N., Giannetti G. (literal)
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- Rivista
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- CNR-ISMAR, Ancona (literal)
- Titolo
- Fluctuations of biomass of sardines (Sardina pilchardus, Walb.) in the Adriatic Sea (literal)
- Abstract
- Sardine (Sardina pilchardus, Walb.) is - together with anchovy (Engraulis
encrasicolus, L.) - a very important commercial fish species in the Mediterranean Sea,
and, in particular, in the Adriatic Sea. The mean value of the annual catch of sardine in
the Adriatic Sea is over 50.000 tons, in the time period 1975-1996.
Since 1975, IRPEM is involved in research on sardine and anchovy abundance
evaluation in the northern and central Adriatic Sea, by using population dynamic
methods. In this paper, the biomass estimates obtained for the time interval 1975-1996
are discussed. These estimates were obtained using three different methods: Length
Cohort Analysis (LCA), Virtual Population Analysis (VPA) and an \"ad-hoc\" modified
version of the DeLury model with recruitment index.
A comparison among the biomass estimates derived from these methods, based on
different assumptions and data input, is made. Values as. well as patterns of biomass
over time are consistent. In particular, strong fluctuations of biomass as a function of
time are always evident. (literal)
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- Autore CNR
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