publication . Article . 2015

Exploring long-term variability of Nephrops norvegicus landing per unit effort (LPUE) off North Galicia (NW Spain)

Isabel González Herraiz; A. Celso Fariña; Juan Freire; José Ramón Cancelo de la Torre;
Open Access English
  • Published: 19 Feb 2015
  • Publisher: Centro Oceanográfico de A Coruña
  • Country: Spain
Abstract
article Landings of Nephrops norvegicus from North Galicia (Northwest Spain) have decreased by 80% from 1975 to 2001. Variability in the landings per unit effort (LPUE) of this stock was investigated by using time series approach. The LPUE time series (1975–2001) exhibited a seasonal pattern. The seasonal decomposition of the LPUE showed a declining in the trend-cycle component from 1987 onwards. Univariate and dynamic regression ARMA models were fitted to the LPUE time series. Population (proportion of males, proportion of ovigerous females and recruits) and environmental variables (temperature, salinity, nitrates and chlorophyll at 70 m depth, upwelling and se...
Subjects
free text keywords: Nephrops norvegicus, Northern Spain, Landing per unit effort, ARIMA model, Environmental factors, Aquatic Science, Salinity, Upwelling, Biology, biology.organism_classification, Sea surface temperature, Dynamic regression, Fishery, Autoregressive integrated moving average, Univariate, Population, education.field_of_study, education
Related Organizations
Communities
Fisheries and Aquaculture Management
EuroMarine
European Marine Science
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publication . Article . 2015

Exploring long-term variability of Nephrops norvegicus landing per unit effort (LPUE) off North Galicia (NW Spain)

Isabel González Herraiz; A. Celso Fariña; Juan Freire; José Ramón Cancelo de la Torre;