Description

This form supports 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.

Conservation and Management Measures

  • Res. 15/01 (Annex II) – On the recording of catch and effort data by fishing vessels in the IOTC area of competence
  • Res. 15/02 (paras. 2-3) – On mandatory statistical reporting requirements for IOTC Contracting Parties and Cooperating Non-Contracting Parties (CPCs)
  • Res. 12/09 (paras. 3-5, 8) – On the conservation of thresher sharks (family Alopiidae) caught in association with fisheries in the IOTC agreement area
  • Res. 13/06 (paras. 4-5, 8) – On a scientific and management framework on the conservation of sharks in association with IOTC managed fisheries
  • Res. 17/05 (para. 6) – On the conservation of sharks caught in association with fisheries managed by IOTC
  • Res. 18/02 (para. 3) – On management measures for the conservation of blue shark caught in association with IOTC fisheries
  • Res. 19/03 (para. 8) – On the conservation of mobulid species caught in association with fisheries in the IOTC area of competence

Resources

Click here to download an empty version of form 1-DI, or return back to the list of all IOTC statistical data reporting forms.

Reporting deadlines

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

Stratification

Reporting metadata

Submission information

Element Requirement Description Format Example
Focal point full name M Name of the focal point in charge of the reporting of the data to the IOTC Secretariat Plain text John Doe
Focal point email M Email address of the focal point in charge of the reporting of the data to the IOTC Secretariat Valid email address
Organisation name M Name of the organisation in charge of the reporting of the data to the IOTC Secretariat Plain text National Institute of Fisheries
Organisation email O Email address of the organisation in charge of the reporting of the data to the IOTC Secretariat Valid email address
Finalisation date M Date of finalisation of the dataset ISO 8601 1996-03-27
Submission date M Date of submission of the dataset ISO 8601 1997-03-21

General information

Element Requirement Description Code list
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 Entity
Flag state M Code of the country registration of the fishery vessels Countries

Data elements

Main data elements

Element Requirement Description Code list
Quarter M Gregorian calendar quarterly of the fishing activities reported through the dataset Integer
Fisheries M Type of fishing practices based on several factors Fisheries
IOTC main areas M Main IOTC areas of competence IOTC main areas
Reasons for discarding M Reasons why the species were discarded Reasons for discarding
Species M Species caught and discarded Species
Condition of species M Conditions of species being discarded at sea Condition
Data raising M Level of raising (i.e., extrapolation) Raisings
Catch unit M Units used to report the level of catches of a given species, Catch units

Original data

Element Requirement Description Code list
Original data type M Preliminary/final status of the data Type of data
Original data source M Source of information Discards data sources
Original data processing M Processing applied to the data Discards data processings
Source coverage type M Variable used for data coverage Coverage types

Additional information

Total annual estimates of the amount of fish caught and discarded by fishing fleet, fishery, IOTC main area, species, and condition.

Referenced codelists

Administrative and geospatial domains

Countries (ADM.COU)

Reference codes modeling the flag / reporting country submitting a dataset to the IOTC Secretariat.

IOTC main areas (GIS.IOTC.MA)

Reference codes modelling the two main areas in which the IOTC area of competence is split (western / eastern IOTC area, roughly coinciding with FAO areas F51 and F57).

Fisheries and fishing technologies domains

Fisheries (FIS)

An ad-hoc classification derived from a combination of several factors (purpose, area of operation, vessel size category, gear, gear configuration, fishing mode and target species) that uniquely describe fishing practices for groups of vessels.

An interactive wizard to help CPCs identify the IOTC code for their fisheries (among those currently considered of relevance in the Indian Ocean).

Catch units (FIA.CU)

Reference codes that model the units used to report the level of catches / discards of a given species, further stratified by the specific criteria characterizing each reporting form.

Biological and morphometrics domains

All species (SPC.ALL)

Reference codes modeling the species interacting with the fisheries as:

  • target species (retained or discarded)
  • bycatch species (retained or discarded)
  • sampled individuals
  • etc.

These codelists are subsets of the entries in the ASFIS list of species for fishery statistics purposes, from which they inherit the alphabetic codes, English, French and scientific names, as well as the family and order, and add the species category (in the IOTC sense), the IUCN status (retrieved from the IUCN red list of endangered species) and other characteristics of each entry such as their status of single species / species aggregate, bait species, SSI species, IOTC species.

Reasons for discarding (SPC.FTE.DI)

Reference codes that model the reasons why aquatic creatures caught by the fishery are then discarded at sea.

Individual conditions (SPC.CN)

Reference codes modeling the conditions (at capture / at release) of individual aquatic creatures being discarded at sea or measured.

Data and metadata domains

Data types (DTA.TY)

Reference codes modeling the type of statistics provided through a specific form, and in particular if these are:

  1. preliminary if the statistics were estimated by using some information from the fishery and year concerned, and the data reported are likely to change in the future as more information become available; or
  2. final if the statistics were estimated by using the complete set of data from the fishery and year concerned, and the data reported are unlikely to change in the future.

Data raising (DTA.RA)

Reference codes modeling the level of raising applied to the data (raised to totals / not raised to totals / unknown).

Discarded catches data sources (DTA.SRC.DI)

Reference codes modeling the source of the data provided through the discards data form.

Discarded catches data processings (DTA.PRO.DI)

Reference codes modeling the processing applied to the data provided through the discards data form.

Coverage types (DTA.COV.TY)

Reference codes modeling the type of coverage for the raw information used to obtain the data provided through a specific form.