Description

PURPOSE: To provide demographic parameters and relative indices of abundance for Atlantic herring in NAFO Division 4T. DESCRIPTION: The experimental gillnet survey is conducted in collaboration with Atlantic herring harvesters and uses standardized multi-mesh gillnets. Gillnets are set on spawning grounds in the spring and fall. Data (fish and sample) are collected to provide: (1) relative age-disaggregated indices of abundance, (2) an indicator of relative changes in fishery selectivity over time, and (3) information on the demographic composition of herring on the spawning grounds. PARAMETERS COLLECTED: Sample: sample location; sample weight; mesh size; length frequency Biological: length; weight; gonad weight; maturity stage (biological); sex (biological); ring count (biological) USE LIMITATION: To ensure scientific integrity and appropriate use of the data, we would encourage you to contact the data custodian.

Resources

Name	Format	Description	Link
Herring Biological Sampling Data	CSV		https://api-proxy.edh-cde.dfo-mpo.gc.ca/catalogue/records/a8dfc79a-8d86-11f0-8f85-857665aaaf0f/attachments/herring_exp_nets_detail.csv
Data Dictionary	CSV		https://api-proxy.edh-cde.dfo-mpo.gc.ca/catalogue/records/a8dfc79a-8d86-11f0-8f85-857665aaaf0f/attachments/herring_exp_nets_dictionary.csv
Herring Gillnet Length-Frequency	CSV		https://api-proxy.edh-cde.dfo-mpo.gc.ca/catalogue/records/a8dfc79a-8d86-11f0-8f85-857665aaaf0f/attachments/herring_exp_nets_lfs.csv
Atlantic Herring Gillnet Survey Landing Ports	Ersi REST		https://egisp.dfo-mpo.gc.ca/arcgis/rest/services/open_data_donnees_ouvertes/southern_gsl_atlantic_herring_experimental_gillnet_surveys/MapServer
Atlantic Herring Gillnet Survey Landing Ports	Ersi REST		https://egisp.dfo-mpo.gc.ca/arcgis/rest/services/open_data_donnees_ouvertes/southern_gsl_atlantic_herring_experimental_gillnet_surveys/MapServer

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