Results of annual surveys of the intertidal zone near Pointe à John, from 2012 to present

Each fall, around the high tides of the equinox, a group of graduating students enrolled in the "Marine Bioecology" course carries out a sampling campaign in the mediolittoral zone around Pointe à John, near Bergeronnes. This course is part of the "Techniques de bioécologie" (Environmental and Wildlife management) program at the Cégep de Sherbrooke. The aim of this inventory is to introduce finishing students to work in the coastal marine zone. Sampling also allows them to plan work, prepare field equipment, collect samples, capture organisms, and measure physicochemical parameters. Back in the laboratory, they identify the organisms present in the samples, compile the results, and perform a few simple analyses of the results.

The sampling campaign includes several components: the harvesting of benthic macroinvertebrates sorted from collected sediment samples (endobenthos), the observation of benthic macroinvertebrates attached to the hard substrate (epibenthos), experimental fishing using fyke nets and bait traps, the measurement of salinity and water temperature, and the calculation of the percentage of algae cover.

As this is work carried out by people in training, the level of identification of the sampled organizations cannot be as accurate as the work carried out by professionals in the field. The field work is still supervised by the teacher in charge and by a practical work technician. The results of the laboratory analysis are also validated by the teacher in charge before they are published.

These inventories use a sampling protocol that has changed little since 2012. The results may therefore show some changes over several years in the invertebrate and fish community in the vicinity of Point à John.

Access and Use

Licence: Creative Commons Attribution 4.0
Limitations: Résultats obtenus par des étudiants finissants en techniques de bioécologie sous supervision du professeur.

Data and Resources



Dataset extent

Map data © OpenStreetMap contributors

Metadata Reference Date(s) February 02, 2023 (Publication)
March 28, 2023 (Revision)
Data Reference Date(s) October 26, 2010 (Creation)
March 27, 2023 (Revision)
Frequency of Update As Needed

Responsible Party 1
Ouellette, Daniel
Cégep de Sherbrooke ROR logo
  • Author
  • Custodian
  • Distributor
  • Originator
  • Owner
  • Principal Investigator
Responsible Party 2
Cégep de Sherbrooke ROR logo
  • Distributor
  • Owner
Responsible Party 3
Custeau, René-Pierre
Cégep de Sherbrooke ROR logo
Point of Contact

Field Value
Ocean Variables
  • Sea Surface Salinity
  • Sea Surface Temperature
  • Fish abundance and distribution
  • Macroalgal canopy cover and composition
  • Invertebrate abundance and distribution
Scope Dataset
Status On Going
Maintenance Note Generated from
Spatial Extent { "coordinates": [ [ [ -69.57, 48.22 ], [ -69.53, 48.22 ], [ -69.53, 48.24 ], [ -69.57, 48.24 ], [ -69.57, 48.22 ] ] ], "type": "Polygon" }
North Bounding Latitude 48.24
South Bounding Latitude 48.22
East Bounding Longitude -69.53
West Bounding Longitude -69.57
Temporal Extent
Vertical Extent
Default Locale French