FN Archimer Export Format PT J TI Technical guidelines for scientific surveys in the Mediterranean and the Black Sea. Procedures and sampling for demersal (bottom and beam) trawl surveys and pelagic acoustic surveys BT AF Carpentieri, Paolo Bonanno, Angelo Scarcella, Giuseppe AS 1:1;2:1;3:1; FF 1:;2:;3:; C1 General Fisheries Commission for the Mediterranean Food and Agriculture Organization of the United Nations Rome, Italy C2 GFCM, ITALY TC 0 UR https://archimer.ifremer.fr/doc/00710/82198/87002.pdf LA English DT Article CR MEDITS MEDITS 2017 BO L'Europe DE ;demersal fisheries;pelagic fisheries;trawling;fishery resources;stock assessment;fishery surveys;methodology;guidelines;Mediterranean Sea;Black Sea AB In the Mediterranean and the Black Sea, the assessment of demersal stocks mainly relies on scientific surveys (bottom and beam trawl) while the assessment of pelagic stocks is essentially based on acoustic surveys using acoustic techniques with mid-water trawling. These routine surveys-at-sea provide essential information, which in turn are crucial to fine-tune the assessments of the status of resources and to estimate more precisely indicators at the population and fish community levels. However, survey practices differ from one subregion to another, each approach having its own strengths and limitations. In addition, there is still a lack of large-scale standardized surveys aimed at analysing the diversity and distribution of the main demersal and pelagic species across the Mediterranean and the Black Sea. One way of tackling this issue is to carry out international scientific surveys covering the main demersal and pelagic stocks based on a common methodology. The methodology presented in this publication aims at supporting the planning and implementation of regional demersal (bottom and beam) trawl and pelagic acoustic surveys. It can be useful for the implementation of new surveys-at-sea in areas where demersal trawl and pelagic acoustic surveys are not regularly carried out. It can also contribute to increasing comparability between existing surveys thanks to the standardization of methods, sampling of catches and data recording and analysis. Finally, it represents a valuable tool to define minimum requirements towards sustainability and management objectives at the regional and subregional level. PY 2020 SO FAO Fisheries and Aquaculture Technical Paper SN 2070-7010 PU FAO IS 641 DI 10.4060/ca8870en ID 82198 ER EF