IREPA onlus XIII th EAFE ANNUAL CONFERENCE SALERNO 2001 IREPA observatory 1 IREPA onlus Istituto Ricerche Economiche per la Pesca e l’Acquacoltura National economic observatory of fisheries survey 2001

IREPA onlus XIII th EAFE ANNUAL CONFERENCE SALERNO 2001 IREPA observatory 2 III module evaluation of economic data I module evaluation of fishing effort and activity II module evaluation of landings and prices by group of species STRUCTURE

IREPA onlus XIII th EAFE ANNUAL CONFERENCE SALERNO 2001 IREPA observatory 3 METHODOLOGY The universe: the archive of fishing vessels (ALP) Sampling units: vessels belonging to the ALP Sampling design: Single Stage Stratified Sampling

IREPA onlus XIII th EAFE ANNUAL CONFERENCE SALERNO 2001 IREPA observatory 4 METHODOLOGY Stratification variables: 1. Maritime regions (geographical stratification) 2. Fishing systems (technical stratification) Total number of strata: 70

IREPA onlus XIII th EAFE ANNUAL CONFERENCE SALERNO 2001 IREPA observatory 5 METHODOLOGY Sample size and allocation across strata : Bethel method: Neyman criterion in the case of multivariate survey confidence interval 95% average sampling error: 5% sample size: 783 units coverage degree: 2.4%

IREPA onlus XIII th EAFE ANNUAL CONFERENCE SALERNO 2001 IREPA observatory 6 METHODOLOGY Selection of the sample units: PPS method Hanurav algorithm definition of the sample design

IREPA onlus XIII th EAFE ANNUAL CONFERENCE SALERNO 2001 IREPA observatory 7 METHODOLOGY Estimators : Horvitz and Thompson estimator Non-sampling errors: specific software for graphical identification

IREPA onlus XIII th EAFE ANNUAL CONFERENCE SALERNO 2001 IREPA observatory 8 Data collection Three questionnaires: an annual questionnaire to record information on the sample units a quarterly questionnaire to record economic data a weekly questionnaire to record information on activity and landings

IREPA onlus XIII th EAFE ANNUAL CONFERENCE SALERNO 2001 IREPA observatory 9 Data collection: annual information F Name F Maritime district F First year of service F Authorised fishing gears F Maritime district from where the ship departed for fishing F Maritime district where the product is landed F LFT F GRT, gross registered tonnage F GT, gross tonnage based on London Convention F kW F Type of association and year of its creation F Number of shipowner, and other related information F Type of association and year of its creation F Navigation equipment F Communication equipment F Fish location equipment F Fish conservation equipment F Employment contract used

IREPA onlus XIII th EAFE ANNUAL CONFERENCE SALERNO 2001 IREPA observatory 10 Data collection: quarterly information F Name F Crates and ice F Maritime district F Quarter F Fuel F Nets and bait costs F Cordage and ropes  Ordinary maintenance F Crew food F Commercialisation costs F Other running costs F Labour share, wages and social insurance F Extraordinary maintenance F Vessel insurance F Tax and other fiscal costs Other vessel costs

IREPA onlus XIII th EAFE ANNUAL CONFERENCE SALERNO 2001 IREPA observatory 11 Data collection: weekly information F Name F Maritime district F Week F Engine used F Average crew F Fishing days F Total hours at sea (navigation and fishing)  Non fishing days for bad weather F Non fishing days for rest, repair and other F Number of hulls F Average time for each single hull F Minimum and maximum fishing area’s distance from the coast line F Maritime district from where the ship leaves to fish F Maritime district where the production is sold F For each single species landed: quantity, price, income and commercial channel

IREPA onlus XIII th EAFE ANNUAL CONFERENCE SALERNO 2001 IREPA observatory 12 IREPA MONITORING SYSTEM - SURVEY POINTS 47 data collectors all over the Italian coastline

IREPA onlus XIII th EAFE ANNUAL CONFERENCE SALERNO 2001 IREPA observatory 13 Data collection Data transmission by internet: direct access to the Irepa server

IREPA onlus XIII th EAFE ANNUAL CONFERENCE SALERNO 2001 IREPA observatory 14 RICA SOFTWARE data collectors’ software to fill and transmit the questionnaires, software for data processing: queries on specific group of elementary data, software for the production of the final tables: checking and correction of the elementary data, application of the expansion