RT Journal Article
T1 Effects of environmental factors on the historical time serie of blackspot seabream commercial landings (1983 to 2015) in the strait of Gibraltar: A shared marine resource between the Spanish and Moroccan fleets
A1 Sanz Fernández, Víctor
A1 Gutiérrez Estrada, Juan Carlos
AB In the Strait of Gibraltar, the Blackspot Seabream (Pagellus bogaraveo, Brünnich 1768) is an economic resource ofgreat commercial importance for the Spanish and Moroccan artisanal and Moroccan longline fleets. Given thegreat interest of the species for the fleets, it is of vital importance to know the dynamics of landings and how thiscan be influenced by environmental variability. From this arises the hypothesis of the present study: environmentalmechanisms cause forcings in the dynamics of landings. To this end, we analysed the average annualdynamics of the time series of commercial landings of the Blackspot Seabream from 1983 to 2015 from amultivariate perspective. We applied trend, principal component (PCA) and time series clustering analyses todetermine patterns and relationships between the fishery series and different oceanographic variables and climaticindices. In addition, we determined the influence of this set of variables on landings from a linear approachbased on multiple linear regressions (MLRs) and generalized linear models (GLMs) and non-linear determined bygeneralized additive models (GAMs). The results obtained indicated the presence of common temporal patternsand the existence of significant influence between landings and ocean temperature with the current velocitymodulus in specific layers and heat flux, causing lower fishing yields as we get colder waters with less intensecurrents. Such studies are of vital importance for the application of an ecosystem approach to the management ofthis resource by understanding the effect and influence of the environment on the dynamics of landings from thefishery.
PB Elsevier
SN 0924-7963
SN 1879-1573 (electrónico)
YR 2023
FD 2023-03
LK https://hdl.handle.net/10272/22146
UL https://hdl.handle.net/10272/22146
LA eng
NO Sanz-Fernández, V., & Gutiérrez-Estrada, J. C. (2023). Effects of environmental factors on the historical time serie of blackspot seabream commercial landings (1983 to 2015) in the strait of Gibraltar: A shared marine resource between the Spanish and Moroccan fleets. In Journal of Marine Systems (Vol. 240, p. 103883). Elsevier BV. https://doi.org/10.1016/j.jmarsys.2023.103883
NO The authors wish to express their gratitude to Dr. Juan Gil-Herrera (Oceanography Spanish Institute, Cádiz, Spain) and Dr. Said Benchoucha and Sana el Arraf (National Institute of Fisheries Research-INRHTangier, Morocco) for providing the data set of Blackspot Seabream landings in the Spanish and Moroccan ports. Víctor Sanz-Fernández is financed by the Spanish Ministry of Science, Innovation and Universities with a FPU fellowship (FPU17/04298). Funding for open access charge: Universidad de Huelva / CBUA.
DS Repositorio Institucional de la Universidad de Huelva
RD 16 jul 2026