There are two main components to the sampling strategy adopted by the Atlantic Zone Monitoring Program (AZMP). One is the seasonal (one to three times per year) sampling to quantify the biological, chemical, and physical variability along several transects in these regions. The second is the higher frequency sampling that is done at the fixed stations to monitor the oceanic dynamics at a finer scale.

Location of sampling stations and transects

 

Fixed stations   Transects
A- Rimouski 1- TESL
B- Gyre Anticosti 2- TSI
C- Courant de Gaspé 3- TASO
  4- TIDM
  5- TCEN
  6- TDC
  7- TBB

Station positions

 


Transects

For the St. Lawrence ecosystem, scientists from IML have developed a sampling plan that includes seven transects with a total of 46 stations to cover the Gulf and estuary. This set of stations has been sampled two to three times a year since 1996 (usually in the spring and the fall), thus giving quasi-synoptic views of the oceanographic conditions in the St. Lawrence.

 

Fixed stations

IML scientists also sample two fixed stations in the Gulf of St. Lawrence off shore of Ste-Marthe de Gaspé. The station nearest the coast is the Gaspé Current station; it is located about 4 km off the south shore of the St. Lawrence, in the middle of the Gaspé Current. This station gives information on the oceanographic conditions of the water leaving the St. Lawrence estuary. A second station, called the Anticosti Gyre, is located about 60 km from the Gaspé coast and was chosen to provide information on the oceanographic conditions of the more oceanic waters of the Gulf. Due to its location, this station is not influenced by water leaving the St. Lawrence estuary or by freshwater inputs from tributaries to the St. Lawrence.

These two stations have been sampled year-round since 1996 at frequencies from 12 to 20 times per year, depending on ship availability (ship time is most often furnished by Canadian Coast Guard "ships of opportunity.")NGCC Martha L. Black

A third fixed station is the Rimouski station, located about 20 km off shore of Rimouski. This station has been sampled one a week between May and October since 1992. The data collected from this station can also serve to complete and validate to some degree the data collected at the Gaspé Current station. In the spring, these stations are also the mooring sites of a series of instrumented buoys that transmit oceanographic data in real-time until the fall.

Temperature, salinity, chlorophyll a, nutrients, and dissolved oxygen as well as phytoplankton and zooplankton biomass are regularly sampled at all AZMP stations.

 

Station positions

Station   Latitude   Longitude   Depth (m)
TESL1 48°34.5'N 68°29.3'W 35
TESL2 48°37.5'N 68°32.8'W 220
TESL3 (Rimouski) 48°40.0'N 68°35.0'W 336
TESL4 48°42.5'N 68°37.8'W 349
TESL5 48°45.0'N 68°40.0'W 351
TESL6 48°47.3'N 68°42.5'W 151
TESL7 48°49.5'N 68°45.0'W 120
TSI1 (CG) 49°14.5'N 66°12.0'W 180
TSI2 49°24.0'N 66°13.0'W 350
TSI3 49°33.0'N 66°14.0'W 340
TSI4 (GA) 49°43.0'N 66°15.0'W 343
TSI5 49°52.9'N 66°16.0'W 288
TSI6 50°03.0'N 66°17.0'W 121
TASO1 49°13.0.N 64°48.0'W 235
TASO2 49°19.0'N 64°43.0'W 386
TASO3 49°26.0'N 64°37.0'W 375
TASO4 49°33.0'N 64°31.0'W 301
TASO5 49°40.0'N 64°25.0'W 168
TIDM1 46°44.7'N 61°00.0'W 64
TIDM2 46°49.8'N 61°15.0'W 64
TIDM3 46°54.1'N 61°30.0'W 55
TIDM4 47°00.0'N 61°45.0'W 43
TIDM5 47°10.2'N 62°15.0'W 45
TIDM6 47°19.8'N 62°45.0'W 55
TIDM7 47°30.0'N 63°15.0'W 81
TIDM8 47°39.6'N 63°45.0'W 67
TIDM9 (Shédiac) 47°44.4'N 64°00.0'W 83
TIDM10 47°49.8'N 64°15.0'W 44
TCEN1 48°12.6'N 61°36.6'W 300
TCEN2 48°21.3'N 61°27.0'W 405
TCEN3 48°30.0'N 61°18.0'W 419
TCEN4 48°38.8'N 61°08.0'W 383
TCEN5 48°47.5'N 60°58.4'W 248
TBB1 49°20.6'N 58°30.0'W 62
TBB2 49°29.0'N 58°43.0'W 130
TBB3 49°36.0'N 58°58.0'W 197
TBB4 49°43.5'N 59°13.0'W 231
TBB5 49°51.0'N 59°27.0'W 268
TBB6 49°59.0'N 59°41.0'W 143
TBB7 50°06.0'N 59°55.0'W 84
TDC1 46°57.5'N 60°13.0'W 82
TDC2 47°01.4'N 60°07.0'W 187
TDC3 47°06.0'N 59°59.5'W 337
TDC4 47°16.3'N 59°47.0'W 475
TDC5 47°26.0'N 59°33.5'W 483
TDC6 47°35.0'N 59°20.5'W 270

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