Description

This form provides for the reporting of estimates of discards in numbers or live weight equivalent for the IOTC species, mobulid rays, whale sharks, cetaceans, common sharks, and other bycatch species. Reporting of quarterly estimates is voluntary and recommended to assess the seasonality of the discards. For each stratum, the data coverage – i.e., the percentage (%) of amount of fish sampled – derived from the coverage type must be reported to assess the representativeness and quality of the estimates.

Click here to download a blank version of Form 1-DI, or return to the list of all IOTC statistical data reporting forms.

Data Content

Number or live weight of discards by species, including their condition at release, if the data are raised, along with information on the value (%) and type of sampling coverage used for the estimations by quarter if available, year, fleet, fishery, and IOTC main area.

Stratification

General Information

Element Requirement Description Input value
Reporting year M Gregorian calendar year of the fishing activities reported through the dataset Integer
Reporting entity M Code of the entity reporting the dataset to the IOTC Secretariat Code from Entities
Flag state M Code of the country registration of the fishing vessels Code from Countries

Main Data Elements

Element Requirement Description Input value
Quarter M Gregorian calendar quarter of the fishing activities reported through the dataset 0: Jan-Dec; 1: Jan-Mar; 2: Apr-Jun; 3: Jul-Sep; 4: Oct-Dec
Fisheries M IOTC fishery derived from the combination of several factors Code from Fisheries
IOTC main areas M Main IOTC areas of competence Code from IOTC main areas
Reasons for discarding M Reasons why the species was discarded Code from Reasons for discarding
Species M Species caught and discarded Code from Species
Condition of species M Conditions of species being discarded at sea Code from Conditions
Data raising M Level of raising (i.e., extrapolation) Code from Raisings
Catch unit M Units used to report the level of catches of a given species Code from Catch units

Original Data

Element Requirement Description Input value
Original data type M Preliminary/final status of the data Code from Types of data
Original data source M Source of information Code from Discards data sources
Original data processing M Processing applied to the data Code from Discards data processings
Source coverage type M Variable used for data coverage Code from Types of coverage

Reporting Metadata

Element Requirement Description Format Example
Liaison officer full name M Name of the liaison officer in charge of the compilation of the data Plain text John Doe
Liaison officer email M Email address of the liaison officer in charge of the compilation of the data Valid email address
Organisation name M Name of the organisation in charge of the compilation of the data Plain text National Institute of Fisheries
Organisation email O Email address of the organisation in charge of the compilation of the data Valid email address
Finalisation date M Date of finalisation of the dataset ISO 8601 1996-03-27
Submission date O Date of submission of the dataset ISO 8601 1997-03-21

Reporting Deadlines

  • Longline fisheries: 30 June (preliminary), 30 December (final)
  • Surface fisheries: 30 June (final)
  • Coastal fisheries: 30 June (final)

Reference Code Lists

Entities

Countries

Fisheries

IOTC Main Areas

Reasons For Discarding

Species

Conditions

Raisings

Catch Units

Types of Data

Discards Data Sources

Discards Data Processings

Types Of Coverage