Data on the ports of Roquetas de Mar and La Línea have not been taken into
account because, on the one hand, landings from the area of Roquetas de Mar are
made in the port of Almería and, on the other hand, La Línea only has one small
purse seiner.
16.4.4 Catch per Unit of Effort
Catch per unit of fishing effort (CPUE) is the total catch divided by the total amount
of effort used to harvest the catch. The standardized CPUE is typically used as an
abundance index. In the present case, the effort unit used is a fishing night.
The CPUE of sardine had a spike in 2010 and another in 2015–2016. It then
underwent a dramatic decrease in 2017 (Fig. 16.15), when the catch was at its lowest
in the entire historical series. In contrast, the catch and CPUEs of anchovy are
increasing (Fig. 16.16).
E. encrasicolus
S. pilchardus
S. aurita
Scomber spp.
Trachurus spp.
Others
Almería
Adra
Motril
Caleta de Vélez
Málaga
Fuengirola
Marbella
Estepona
Fig. 16.14 Distribution of landings by port (2009–2017)
572
A. Giráldez
account because, on the one hand, landings from the area of Roquetas de Mar are
made in the port of Almería and, on the other hand, La Línea only has one small
purse seiner.
16.4.4 Catch per Unit of Effort
Catch per unit of fishing effort (CPUE) is the total catch divided by the total amount
of effort used to harvest the catch. The standardized CPUE is typically used as an
abundance index. In the present case, the effort unit used is a fishing night.
The CPUE of sardine had a spike in 2010 and another in 2015–2016. It then
underwent a dramatic decrease in 2017 (Fig. 16.15), when the catch was at its lowest
in the entire historical series. In contrast, the catch and CPUEs of anchovy are
increasing (Fig. 16.16).
E. encrasicolus
S. pilchardus
S. aurita
Scomber spp.
Trachurus spp.
Others
Almería
Adra
Motril
Caleta de Vélez
Málaga
Fuengirola
Marbella
Estepona
Fig. 16.14 Distribution of landings by port (2009–2017)
572
A. Giráldez