Open Government Portal

Found 10 records similar to Evaluation of groundfish and shrimp annual multidisciplinary survey in the Estuary and northern Gulf of St. Lawrence (CCGS Alfred Needler 1990 - 2005)

Federal

Fisheries and Oceans Canada (DFO) conducts an annual multidisciplinary scientific survey with a bottom trawl in the Estuary and the northern Gulf of St. Lawrence since 1978. Over the years this survey has been conducted on four vessels: the MV Gadus Atlantica (1978-1994), the MV Lady Hammond (1984-1990), the CCGS Alfred Needler (1990-2005) and the CCGS Teleost (2004-2021). It is important to note that the objectives, the methods used and the identification of the species during these surveys have improved over time in response to DFO requests and mandates. The data are therefore not directly comparable between these surveys.

Last Updated: Mar. 29, 2022
Date Published: Jan. 1, 2019
Organization: Fisheries and Oceans Canada
Formats: PDF CSV HTML ESRI REST
Keywords:  St. Lawrence Estuary, Gulf of St. Lawrence, Groundfish; Shrimp; Multidisciplinary survey; Teleost, Oceans, Marine biology, Fish, Aquatic wildlife, Fisheries management, Aquatic ecosystems
Federal

Fisheries and Oceans Canada (DFO) conducts an annual multidisciplinary scientific survey with a bottom trawl in the Estuary and the northern Gulf of St. Lawrence since 1978. Over the years, this survey has been conducted on four vessels: the MV Gadus Atlantica (1978-1994), the MV Lady Hammond (1984-1990), the CCGS Alfred Needler (1990-2005) and the CCGS Teleost (2004-2021). It is important to note that the objectives, the methods used and the identification of the species during these surveys have improved over time in response to DFO requests and mandates. The data are therefore not directly comparable between these surveys.

Last Updated: Mar. 29, 2022
Date Published: Jan. 1, 2019
Organization: Fisheries and Oceans Canada
Formats: CSV ESRI REST
Keywords:  Gulf of St. Lawrence, Groundfish; multidisciplinary survey; Gadus, Marine biology, Aquatic ecosystems, Aquatic animals, Oceans, Fisheries management, Fish
Federal

Fisheries and Oceans Canada (DFO) conducts an annual multidisciplinary scientific survey with a bottom trawl in the Estuary and the northern Gulf of St. Lawrence since 1978. Over the years, this survey has been conducted on four vessels: the MV Gadus Atlantica (1978-1994), the MV Lady Hammond (1984-1990), the CCGS Alfred Needler (1990-2005) and the CCGS Teleost (2004-2021). It is important to note that the objectives, the methods used and the identification of the species during these surveys have improved over time in response to DFO requests and mandates. The data are therefore not directly comparable between these surveys.

Last Updated: Mar. 29, 2022
Date Published: Jan. 1, 2019
Organization: Fisheries and Oceans Canada
Formats: CSV ESRI REST
Keywords:  Gulf of St. Lawrence, Groundfish; multidisciplinary survey; Lady Hammond, Marine biology, Aquatic ecosystems, Aquatic animals, Oceans, Fisheries management, Fish
Federal

In place since 1994 in eastern Canada, the sentinel fisheries program is the result of a collaboration between Fisheries and Oceans Canada (DFO) and commercial fishermen. Under this program, contracts are awarded by tender to fishermen to carry out fishing activities according to scientific protocols developed by DFO.Description of mobile surveysThe mobile gear sentinel fisheries of the northern Gulf of St. Lawrence are conducted in the divisions 4R, 4S, 3Pn and the northern part of the division 4T of the Northwest Atlantic Fisheries Organization (NAFO). This program follows a stratified random survey plan according to depth strata. A standard tow is 30 minutes long and made at a speed of 2.5 knots.

Last Updated: Apr. 8, 2020
Date Published: Jan. 1, 2019
Organization: Fisheries and Oceans Canada
Formats: PDF HTML CSV
Keywords:  Gulf of St. Lawrence, Sentinel fisheries, Marine biology, Aquatic wildlife, Aquatic ecosystems, Oceans, Fish, Fisheries management
Federal

Spatial distribution of lumpfish catch rates (number per tow) during the August DFO research survey conducted annually since 1990, to assess the state of groundfish and shrimp stocks in the northern Gulf of St. Lawrence. The area sampled by a tow is the product of the distance trawled (fishing time multiplied by vessel speed) and the wing spread (13.41 m for the Alfred Needler and 16.94 m for the Teleost). Given that this area may vary among tows, the sampling unit is standardized and defined as being a station sampled by a tow over a distance of 0.75 nautical miles (1,389 m) with a horizontal wing spread of 16.94 m. Catch variables were calculated based on the standard area, 0.02353 km². After each tow, the catch was sorted by taxa, and the number of individuals and total biomass of these taxa were noted.

Last Updated: May 6, 2021
Date Published: Jan. 1, 2015
Organization: Fisheries and Oceans Canada
Formats: SHP CSV ESRI REST
Keywords:  Catch rates, Assessment, Lumpfish, Cyclopterus lumpus, Gulf of St. Lawrence, St. Lawrence Estuary, Cabot Strait, Strait of Belle Isle, Earth sciences
Federal

In place since 1994 in eastern Canada, the sentinel fisheries program is the result of a collaboration between Fisheries and Oceans Canada (DFO) and commercial fishermen. Under this program, contracts are awarded by tender to fishermen to carry out fishing activities according to scientific protocols developed by DFO.Description of fixed surveysThe fixed gear sentinel fisheries of the northern Gulf of St. Lawrence are conducted in the divisions 4R, 4S and 3Pn of the Northwest Atlantic Fisheries Organization (NAFO). The gear used is fixed gillnets or longlines. Fishing activities with nets must have a mesh size of 5 ½ inches (140mm) and are limited to a maximum of 12 to 20 nets depending on the region.

Last Updated: Apr. 8, 2020
Date Published: Jan. 1, 2019
Organization: Fisheries and Oceans Canada
Formats: PDF CSV
Keywords:  Gulf of St. Lawrence, sentinel fisheries, Marine biology, Aquatic wildlife, Aquatic ecosystems, Oceans, Fish, Fisheries management
Federal

The sea scallop research survey is conducted on CCGS MPerley and has stratified random sampling. For each tow (or sample), data is recorded on tow, all specimens caught, geolocation, shell height frequency and biological samples.

Last Updated: Jun. 9, 2022
Date Published: Apr. 7, 2020
Organization: Fisheries and Oceans Canada
Formats: CSV ESRI REST
Keywords:  Field Surveys, Crustaceans, Mollusks, Bivalves, Aquaculture, Placopecten magellanicus, Gulf of St. Lawrence, Fisheries
Federal

The Science Branch of Fisheries and Oceans Canada (DFO) in the Newfoundland and Labrador (NL) region has been conducting multispecies research vessel (RV) surveys using a stratified random survey design since the early 1970s. The DFO RV survey dataset represents the longest time series of species data in the NL region, making it ideal for mapping the average relative densities of species over time. Average relative density maps depict the interpolated densities (calculated from kg/tow) of fish species or functional groups. These densities are averaged over each time series (Engel and Campelen) and include data from all available seasons, so they represent persistent areas of relatively high and low densities for that species or functional group for the duration of the time series, independent of season.

Last Updated: Feb. 1, 2022
Date Published: Jan. 1, 2021
Organization: Fisheries and Oceans Canada
Formats: PDF CSV ESRI REST GeoTIF
Keywords:  Marine biology, Fisheries products, Salt water fish, Ecology
Federal

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.

Last Updated: May 19, 2021
Date Published: Jan. 13, 2021
Organization: Fisheries and Oceans Canada
Formats: CSV ESRI REST
Keywords:  Oceans
Federal

In 2021, the Canada Coast Guard (CCG) and Fisheries and Oceans Canada updated its administrative boundaries following the creation a new Arctic region. There are now 4 administrative regions in CCG (Western, Arctic, Central and Atlantic). DFO and Coast Guard Arctic Regions developed these regions in partnership with the people they serve; this important decision will lead to stronger programs and services to better meet the unique needs of our Arctic communities. DFO and CCG operations and research cover Canada's land and waters to the international boundaries (EEZ) and are in no way limited to the boundaries drawn in the map.

Last Updated: Sep. 16, 2021
Date Published: May 5, 2021
Organization: Fisheries and Oceans Canada
Formats: FGDB/GDB ESRI REST
Keywords:  Regions
Date modified: