1. IREPA onlus http://www.irepa.org E-mail: irepa@irepa.org 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

2. IREPA onlus http://www.irepa.org E-mail: irepa@irepa.org 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

3. IREPA onlus http://www.irepa.org E-mail: irepa@irepa.org 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

4. IREPA onlus http://www.irepa.org E-mail: irepa@irepa.org 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

5. IREPA onlus http://www.irepa.org E-mail: irepa@irepa.org 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%

6. IREPA onlus http://www.irepa.org E-mail: irepa@irepa.org 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

7. IREPA onlus http://www.irepa.org E-mail: irepa@irepa.org XIII th EAFE ANNUAL CONFERENCE SALERNO 2001 IREPA observatory 7 METHODOLOGY Estimators : Horvitz and Thompson estimator Non-sampling errors: specific software for graphical identification

8. IREPA onlus http://www.irepa.org E-mail: irepa@irepa.org 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

9. IREPA onlus http://www.irepa.org E-mail: irepa@irepa.org 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

10. IREPA onlus http://www.irepa.org E-mail: irepa@irepa.org 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

11. IREPA onlus http://www.irepa.org E-mail: irepa@irepa.org 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

12. IREPA onlus http://www.irepa.org E-mail: irepa@irepa.org XIII th EAFE ANNUAL CONFERENCE SALERNO 2001 IREPA observatory 12 IREPA MONITORING SYSTEM - SURVEY POINTS 47 data collectors all over the Italian coastline

13. IREPA onlus http://www.irepa.org E-mail: irepa@irepa.org XIII th EAFE ANNUAL CONFERENCE SALERNO 2001 IREPA observatory 13 Data collection Data transmission by internet: direct access to the Irepa server

14. IREPA onlus http://www.irepa.org E-mail: irepa@irepa.org 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