Outside North Hard Bottom Longline Surveys

Outside North Hard Bottom Longline Surveys Catch, effort, location (latitude and longitude), and associated biological data from groundfish multi-species longline surveys on the northern British Columbia coast, excluding the inlets and protected waters east of Vancouver Island. Introduction The Outside North Hard Bottom Longline (HBLL) survey is one of a set of long-term and coordinated surveys that together cover most of the nearshore, hard-bottom habitat of coastal British Columbia. The other surveys are the Outside South HBLL survey, Inside North HBLL survey, and Inside South HBLL survey. The Outside North HBLL survey was first conducted in 2006 and has been repeated every second year in alternate years to the Outside South HBLL survey, with the exception that no surveys were conducted in 2013. The survey was not impacted by the COVID-19 pandemic. The objective of these surveys is to provide fishery-independent abundance indices and associated biological data for the assessment of nearshore rockfishes and other groundfish species that live on untrawlable, hard bottom habitats. The surveys follow a random depth-stratified design and the sampling units are 2 km by 2 km blocks. The Outside HBLL surveys use size 14/0 circle hooks, baited with frozen squid. The Outside North HBLL Survey is conducted by DFO in collaboration with the Pacific Halibut Management Association (PHMA) and takes place on several chartered commercial fishing vessels each year. This survey covers the northern portion of the British Columbia coastline, including the mainland coast north of Milbanke Sound, Dixon Entrance, and the east and west coasts of Haida Gwaii. The PHMA provides the chartered commercial fishing vessels and field technicians, while DFO provides support for running the surveys, including survey design and equipment. Effort This table contains information about the survey trips and fishing events (sets) that are part of this survey series. Trip-level information includes the year the survey took place, a unique trip identifier, the vessel that conducted the survey and the trip start and end dates (the dates the vessel was away from the dock conducting the survey). Set-level information includes the date, time, location and depth that fishing took place, soak time, hook spacing, and numbers of hooks counted. All successful fishing events are included, regardless of what was caught. Catch This table contains the catch information from successful fishing events. Catches are identified to species or to the lowest taxonomic level possible. Catches are recorded as counts only. The unique trip identifier and set number are included so that catches can be related to the fishing event information (including capture location). Biology This table contains the available biological data for catches which were sampled. Data may include any or all of length, sex, weight, age. Different length types are measured depending on the species. Age structures are collected when possible for species where validated aging methods exist and are archived until required for an assessment; therefore, all existing structures have not been aged at this time. Tissue samples (usually a fin clip) may be collected for genetic (DNA) analysis for some individuals of particular species. Genetic samples may be archived until required for analysis; for more information please see the data contacts. The unique trip identifier and set number are included so that samples can be related to the fishing event and catch information. 2023-07-11 Fisheries and Oceans Canada maria.cornthwaite@dfo-mpo.gc.ca Nature and EnvironmentScience and TechnologyGroundfishCommercial SpeciesLongline SurveyFishery Independent DataCanadian Groundfish Research and Conservation SocietyCGRCSCollaborative AgreementStock AssessmentHard Bottom HabitatsRelative AbundanceRelative BiomassPacific OceanNorth PacificBritish ColumbiaFisheriesResources managementOceansFishMarine biology Data DictionaryHTML https://pacgis01.dfo-mpo.gc.ca/FGPPublic/Hard_Bottom_Longline_Surveys/Outside_North/Data_Dictionary.htm Reference InformationHTML https://pacgis01.dfo-mpo.gc.ca/FGPPublic/Hard_Bottom_Longline_Surveys/Outside_North/REFERENCE INFORMATION.htm Survey SummariesHTML https://pacgis01.dfo-mpo.gc.ca/FGPPublic/Hard_Bottom_Longline_Surveys/Outside_North/Survey Summaries.htm Outside North Hard Bottom Longline SurveysCSV https://pacgis01.dfo-mpo.gc.ca/FGPPublic/Hard_Bottom_Longline_Surveys/Outside_North/Outside_North_Hard_Bottom_Longline_Surveys_EN.zip Outside North Hard Bottom Longline SurveysCSV https://pacgis01.dfo-mpo.gc.ca/FGPPublic/Hard_Bottom_Longline_Surveys/Outside_North/Outside_North_Hard_Bottom_Longline_Surveys_FR.zip Outside North Hard Bottom Longline SurveysESRI REST https://gisp.dfo-mpo.gc.ca/arcgis/rest/services/FGP/Hard_Bottom_Longline_Surveys_EN/MapServer/2 Outside North Hard Bottom Longline SurveysESRI REST https://gisp.dfo-mpo.gc.ca/arcgis/rest/services/FGP/Hard_Bottom_Longline_Surveys_FR/MapServer/2

Catch, effort, location (latitude and longitude), and associated biological data from groundfish multi-species longline surveys on the northern British Columbia coast, excluding the inlets and protected waters east of Vancouver Island.

Introduction

The Outside North Hard Bottom Longline (HBLL) survey is one of a set of long-term and coordinated surveys that together cover most of the nearshore, hard-bottom habitat of coastal British Columbia. The other surveys are the Outside South HBLL survey, Inside North HBLL survey, and Inside South HBLL survey.

The Outside North HBLL survey was first conducted in 2006 and has been repeated every second year in alternate years to the Outside South HBLL survey, with the exception that no surveys were conducted in 2013. The survey was not impacted by the COVID-19 pandemic. The objective of these surveys is to provide fishery-independent abundance indices and associated biological data for the assessment of nearshore rockfishes and other groundfish species that live on untrawlable, hard bottom habitats. The surveys follow a random depth-stratified design and the sampling units are 2 km by 2 km blocks. The Outside HBLL surveys use size 14/0 circle hooks, baited with frozen squid.

The Outside North HBLL Survey is conducted by DFO in collaboration with the Pacific Halibut Management Association (PHMA) and takes place on several chartered commercial fishing vessels each year. This survey covers the northern portion of the British Columbia coastline, including the mainland coast north of Milbanke Sound, Dixon Entrance, and the east and west coasts of Haida Gwaii. The PHMA provides the chartered commercial fishing vessels and field technicians, while DFO provides support for running the surveys, including survey design and equipment.

Effort

This table contains information about the survey trips and fishing events (sets) that are part of this survey series. Trip-level information includes the year the survey took place, a unique trip identifier, the vessel that conducted the survey and the trip start and end dates (the dates the vessel was away from the dock conducting the survey). Set-level information includes the date, time, location and depth that fishing took place, soak time, hook spacing, and numbers of hooks counted. All successful fishing events are included, regardless of what was caught.

Catch

This table contains the catch information from successful fishing events. Catches are identified to species or to the lowest taxonomic level possible. Catches are recorded as counts only. The unique trip identifier and set number are included so that catches can be related to the fishing event information (including capture location).

Biology

This table contains the available biological data for catches which were sampled. Data may include any or all of length, sex, weight, age. Different length types are measured depending on the species. Age structures are collected when possible for species where validated aging methods exist and are archived until required for an assessment; therefore, all existing structures have not been aged at this time. Tissue samples (usually a fin clip) may be collected for genetic (DNA) analysis for some individuals of particular species. Genetic samples may be archived until required for analysis; for more information please see the data contacts. The unique trip identifier and set number are included so that samples can be related to the fishing event and catch information.

Data and Resources
View on Map

Contact Information

Delivery Point: Pacific Biological Station, 3190 Hammond Bay Road

City: Nanaimo

Administrative Area: British Columbia

Postal Code: V9T 6N7

Country: Canada

Electronic Mail Address: Shelee.Hamilton@dfo-mpo.gc.ca

Similar records