• Arctic SDI catalogue
  •  
  •  
  •  

Inshore Lobster Trawl Survey

An annual trawl survey is conducted in Southwestern Nova Scotia and the Bay of Fundy to assess the lobster stocks in the area. The survey is conducted with the Northeast Fisheries Science Center Ecosystem Survey Trawl (NEST), a small mesh trawl with a cod end liner, which ensures the capture of various sizes of lobster. The dimensions and location of the trawl are monitored and recorded throughout the tow using an electronic trawl mensuration system. In addition, water temperature and depth are also monitored. The target tow length is 1 kilometer which is tracked using an Olex marine charting system. Vessel crew, DFO science staff and a contracted at sea observer work together to perform required tasks and collect all relevant data. Catch from each tow is separated by species, weighed and counted. Length frequency data is collected on select groundfish and crab species and detailed morphometric data is collected on each lobster.

PARAMETERS COLLECTED:

Set information and profile - includes set date, time depth and location

Catch summary - weight and number caught of each species

Length Freqeuncies - completed for up to 100 fish for selected species

Lobster Morphological Data - detailed data collected on each lobster

Bottom Temperature

Trawl Metrics

NOTES ON QUALITY CONTROL:

Data is visually verified and double keypunched. On loading to Oracle, data is run through rigorous automated checks to verify data accuracy and integrity.

SAMPLING METHODS:

The target tow length is 1 kilometer which is tracked using an Olex marine charting system. Vessel crew, DFO science staff and a contracted at sea observer work together to perform required tasks and collect all relevant data. Catch from each tow is separated by species, weighed and counted. Length frequency data is collected on select groundfish and crab species, detailed morphometric data is collected on each lobster. Bottom temperature and trawl metrics are collected for each tow.

CITATION LIST:

Denton, Cheryl M.. 2020. Maritimes Region Inshore Lobster Trawl Survey Technical Description. Canadian technical reports of fisheries and aquatic sciences (DFO) 3376.

Simple

Date ( RI_366 )
2013-06-24
Date ( RI_367 )
2021-01-13
RI_409
  Government of Canada; Fisheries and Oceans Canada - Cheryl Denton ( )
24 Industrial Drive , Seabrook , Nova Scotia , B0V 1A0 , Canada
(902) 245-7301
RI_415
  Government of Canada; Fisheries and Oceans Canada - Adam Cook ( )
Bedford Institute of Oceanography, 1 Challenger Drive, PO Box 1006 , Dartmouth , Nova Scotia , B2Y 4A2 , Canada
(902) 426-2273
Purpose
The Inshore Lobster Trawl Survey (ILTS) is a fishery independent survey conducted annually in Southwestern Nova Scotia and the Bay of Fundy. Data collected is used assess lobster stocks in the area.
Status
onGoing; enContinue RI_596
Maintenance and update frequency
asNeeded; auBesoin RI_540
Government of Canada Core Subject Thesaurus Thésaurus des sujets de base du gouvernement du Canada ( RI_528 )
  • Oceans
Use limitation
Open Government Licence - Canada (http://open.canada.ca/en/open-government-licence-canada)
Access constraints
license; licence RI_606
Use constraints
license; licence RI_606
Classification
unclassified; nonClassifié RI_484
Spatial representation type
vector; vecteur RI_635
Metadata language
eng; CAN
Character set
utf8; utf8 RI_458
Topic category
  • Oceans
Begin date
2013-06-24
Description
Southwestern Nova Scotia
N
S
E
W
thumbnail


Reference system identifier
https://epsg.io / EPSG:4326
Distribution format
  • CSV ( n/a )

  • ESRI REST ( 2.5.0 )

  • FGDB/GDB ( 2.8.8 )

RI_414
  Government of Canada; Fisheries and Oceans Canada - Population Ecology Division / Division de l’écologie des population ( )
Bedford Institute of Oceanography, 1 Challenger Drive, PO Box 1006 , Dartmouth , Nova Scotia , B2Y 4A2 , Canada
RI_412
  Government of Canada; Fisheries and Oceans Canada - Data Acquisition Assembly and Distribution / Acquisition, assemblage et distribution de donnée ( )
Bedford Institute of Oceanography, 1 Challenger Drive, PO Box 1006 , Dartmouth , Nova Scotia , B2Y 4A2 , Canada
OnLine resource
Data Dictionary ( HTTPS )

Supporting Document;CSV;eng,fra

OnLine resource
Inshore Lobster Trawl Survey ( ESRI REST: Map Server )

Web Service;ESRI REST;eng

OnLine resource
Inshore Lobster Trawl Survey ( ESRI REST: Map Server )

Web Service;ESRI REST;fra

OnLine resource
Inshore Lobster Trawl Survey ( HTTPS )

Dataset;FGDB/GDB;eng

File identifier
190276ba-29ea-4b3b-be74-757d0eb896f2 XML
Metadata language
eng; CAN
Character set
utf8; utf8 RI_458
Hierarchy level
dataset; jeuDonnées RI_622
Date stamp
2025-02-06T17:25:36.34Z
Metadata standard name
North American Profile of ISO 19115:2003 - Geographic information - Metadata
Metadata standard version
CAN/CGSB-171.100-2009

Metadata author

No information provided.
RI_408
  Government of Canada; Fisheries and Oceans Canada - Population Ecology Division / Division de l’écologie des population ( )
Bedford Institute of Oceanography, 1 Challenger Drive, PO Box 1006 , Dartmouth , Nova Scotia , B2Y 4A2 , Canada
 
 

Overviews

overview
Inshore Lobster Trawl Survey

Spatial extent

N
S
E
W
thumbnail


Keywords


Provided by

logo

Associated resources

Not available


  •  
  •  
  •