Deep-water red shrimp fishery in the Eastern-Central Mediterranean Sea: AIS-observed monthly fishing effort and frequency over four years

Date 2022-09-01
Temporal extent 2015-01-01 -2018-12-31
Author(s) Pulcinella JacopoORCID1, Armelloni Enrico NicolaORCID1, 2, Ferrà Vega CarmenORCID1, 2, Scarcella GiuseppeORCID1, Tassetti Anna NoraORCID1
Affiliation(s) 1 : CNR-IRBIM, National Research Council, Institute of Biological Resources and Marine Biotechnologies, Largo Fiera della Pesca 1, 60125 Ancona, Italy
2 : BiGeA, Department of Biological, Geological and Environmental Sciences, Alma Mater Studiorum, University of Bologna, Bologna, Italy
DOI 10.17882/89150
Publisher SEANOE
Keyword(s) Deep-water trawling, Fisheries management, Vessel positional data, Ecology, Environmental impact, Automatic Identification System, Deep-water red shrimp
Abstract

Deep-sea fishery in the Mediterranean Sea was historically driven by the commercial profitability of deepwater red shrimps and understanding spatio-temporal dynamics of fishing is key to comprehensively evaluate the status of these profitable resources and prevent stock collapse. A four-year time series of AIS-based observed monthly patterns and related frequency of trawling disturbance are provided with a resolution of 0.01°*0.01°, accounting for the spatial extent and temporal variability in deep water bottom contact fisheries during the period 2015-2018. Fishing effort and vessel presence is measured in units of hours, while frequency between trawling events is given as average days between trawling events over the whole time series. The dataset covers 15 General Fisheries Commission for the Mediterranean (GFCM) management Geographical Sub Areas (GSAs) in the Eastern-Central Mediterranean Sea (GSAs 12-16 and 18-27) and was estimated from 370 fishing vessels that were found to perform trawling in deep water (400 m - 800 m). Analysis was based on terrestrial Automatic Identification System (poll frequency of 5 min, EU and non-EU vessels, AIS type = 30) and mostly performed applying the R scripts available in the R4AIS code repository Version v1.0.2  (https://github.com/MAPSirbim/AIS_data_processing/tree/v1.0.2). 

The work was carried out in the framework of the FAO GFCM deep water red shrimps Working Group, which supported in understanding the specific fishery and validated outcomes. This large-scale and high-resolution dataset may help researchers of many scientific fields, as well as those involved in fishery management and in the update of existing management plans for deep-water red shrimp fisheries as foreseen in relevant GFCM recommendations.

Licence CC-BY
Utilisation The analysis was based on terrestrial AIS data 2015-2018, owned by CNR-IRBIM and obtained from a private provider (http://www.astrapaging.com/) with a poll frequency of 5 min, including EU and non-EU vessels (AIS type = 30).
Acknowledgements We are grateful to the GFCM Deep Water Red Shrimp Working Group for its help in preparing and discussing the reconstructed trawling effort data. This dataset was supported by a letter of agreement between the Food and Agriculture Organization of the United Nations (FAO) under the General Fisheries Commission for the Mediterranean (GFCM) and CNR-IRBIM for the provision of “Identification and mapping of bottom trawl fishing grounds for deepwater red shrimp in the Eastern-Central Mediterranean Sea (GSAs 12-16, 18-27)”.
Data
File Size Format Processing Access
Deep Water Trawling frequency in the Eastern-Central Mediterranean Sea at 100th Degree Resolution (2015-2018) 1 MB CSV Quality controlled data Open access
Monthly Deep Water fishing effort in the Eastern-Central Mediterranean Sea at 100th Degree Resolution (2015-2018) 28 MB CSV Quality controlled data Open access
README file: txt machine-readable file describing the parameters of the dataset 5 KB TEXTE Quality controlled data Open access
R code and additional input spatial layers to visualize data and generate plots 18 MB .R, .Rdata, .shp Quality controlled data Open access
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How to cite 

Pulcinella Jacopo, Armelloni Enrico Nicola, Ferrà Vega Carmen, Scarcella Giuseppe, Tassetti Anna Nora (2022). Deep-water red shrimp fishery in the Eastern-Central Mediterranean Sea: AIS-observed monthly fishing effort and frequency over four years. SEANOE. https://doi.org/10.17882/89150