{"id":3531,"date":"2023-01-17T14:31:53","date_gmt":"2023-01-17T13:31:53","guid":{"rendered":"http:\/\/visap-int.icm.csic.es\/fisheries\/"},"modified":"2023-04-18T14:25:48","modified_gmt":"2023-04-18T12:25:48","slug":"fisheries","status":"publish","type":"page","link":"https:\/\/www.icatmar.cat\/en\/fisheries\/","title":{"rendered":"Fisheries"},"content":{"rendered":"\t\t
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Fisheries advice <\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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ICATMAR carries out an exhaustive and continuous monitoring of the fishing resources present along the Catalan coastline<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Data, knowledge and responsiveness <\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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The first step in fisheries monitoring is data collection. The data we gather allow us to understand the biology of the species and the characteristics of the communities where they live, as well as to produce distribution maps and expand the information available on the selectivity of fishing gears.<\/p>\n

We work with both our own and external data, such as sales notes, the census of the fishing fleet and data from the vessels geolocation system (VMS; Geoblau), which allow us to generate knowledge in the field of fisheries. We can obtain biological data necessary for fisheries assessment, such as size frequencies, reproductive seasons and size at first maturity of the studied target species.<\/p>\n

This acquired knowledge provides us with the basic means to respond to the different scenarios and challenges present in ICATMAR’s field of action: environmental variability, the adaptation of management measures to the reality of the fishing sector or the participation in technical and co-management committees, among others.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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How are the data obtained?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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ICATMAR monitors commercial and recreational marine fisheries along the Catalan coast by acquiring biological and fisheries data.<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Marine recreational fisheries<\/strong><\/p>\n

In marine recreational fisheries, we work with a combined methodology of field and online surveys, which fishermen answer voluntarily. An average of 10 000 recreational marine fishermen are surveyed annually and different types of data are obtained: sociological, socio-economic, data on catch composition, the size and weight of these catches and the frequency with which they practice the activity.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Marine recreational fisheries data are obtained through a combined methodology of online and field surveys. The online surveys are distributed via e-mail to random addresses provided by the fishermen when they register their license. Since 2020, the Generalitat de Catalunya requires an e-mail address during the license registration process, and hence it has been possible to design the distribution of surveys in such a way that, even if a fisherman registers for more than one license per year, he can only receive the survey once a year. With the online surveys, we ensure the widest possible response from the recreational fishing sector (an average of 900 responses per month). The field surveys are carried out along the Catalan coast, from Portbou to the mouth of the river S\u00e8nia, dividing the coast into 11 zones. For each zone, sampling is carried out on foot (following the coastline) and in port in each season of the year, i.e., we obtain between 8 and 12 samples per zone per year in total. The aim of the field surveys is to have detailed information on catch composition, size and weight.<\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Recreational fishing is a non-professional activity practised for leisure and\/or sport by approximately 350 million people worldwide. This activity coexists with professional or commercial fishing, and common target species are often shared between the two. Therefore, obtaining data on marine recreational fisheries is an important step towards improving knowledge about exploited marine populations and the ecosystems they inhabit.<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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On board bottom trawlers, fishermen sort the catch into two fractions: the commercial fraction, which contains everything that will be sold at the fish auction, and the discard fraction.<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Commercial fishing<\/strong><\/p>\n

We work with bottom trawling, purse seine and small-scale fishing fleets, on board commercial vessels with the collaboration of the fishermen. The catch samples obtained on board are then analyzed in the laboratory to obtain biological data that allow us to assess the state of the exploited marine populations of the Catalan coast. Our sampling is focused on the following target species:<\/p>\n