European Directory of Marine Environmental Data (EDMED)

Data set information

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General
Data set name

Biomass - abundance indices series and length frequency distributions of commercially important and other demersal species of Greek Seas (1994 - 2000)

Data holding centreHellenic Centre for Marine Research, Institute of Marine Biological Resources and Inland Waters, Dept. of Marine Biological Resources
CountryGreece  Greece
ProjectMEDITERRANEAN INTERNATIONAL TRAWL SURVEY (MEDITS)(MEDITS)
Time period1994 - 2000
OngoingNo
Geographical area

Argosaronikos region - Aegean Sea (37 09 21 - 38 00 83, 23 00 83 - 24 10 31) 10-800 m depth, Ionian Sea (37 35 26 - 39 15 41, 20 14 10 - 21 07 80) 10-800 m depth

Observations 
Parameters

Fish morphology, age and physiology; Fish taxonomy-related abundance per unit area of the bed; Fish taxonomy-related ash-free dry weight biomass per unit area of the bed; Fish behaviour

Instruments

Pelagic trawl nets

Description 
Summary

Biomass -abundance indices series and length frequency distributions of commercially important and other (decapodes and myctophids) demersal species of Argosaronikos and Ionian Sea (Greece).The data are collected in the framework of the MEDITS program (International Bottom Trawl Survey in the Mediterranean) partly financed by the EC. This project was designed to produce biological data, useful for the fishery management, on the demersal resources along the coasts of the four Mediterranean countries of the European Union. Its main objective was to get abundance indices comparable between the different studied areas. This has been made possible by the standardisation of the methodology (common protocols, same gear, common format for the computer files, etc). From 1994, 7 surveys have been conducted on an annual basis, which cover all the trawlable areas from 10 to 800 m of depth. The data have been stored in a common database specially elaborated for the project. At the end of each survey, abundance indices are calculated and length frequency distributions are produced, and a working group meets to provide a common analysis of the results for about 30 reference species (fishes, crustaceans and molluscs).

OriginatorsHellenic Centre for Marine Research, Institute of Marine Biological Resources and Inland Waters, Dept. of Marine Biological Resources
Data web sitehttp://www.gisbau.uniroma1.it/medits
Availability 
OrganisationHellenic Centre for Marine Research, Institute of Marine Biological Resources and Inland Waters, Dept. of Marine Biological Resources
AvailabilityBy negotiation
ContactDr C. Papaconstantinou
Address

Hellenic Centre for Marine Research, Institute of Marine Biological Resources and Inland Waters, Dept. of Marine Biological Resources
Agios Kosmas
Hellinikon
Attiki
16604
Greece

Telephone+30 2109821354
Facsimile+ 30 2109811713
Emailmaniopoulou@hcmr.gr
Administration 
Collating centreHellenic Centre for Marine Research, Hellenic National Oceanographic Data Centre
Local identifier6009007
Global identifier1232
Last revised2015-03-20