Historical earthquakes recorded by Earthquakes Canada. This serie is composed of 4 earthquake datasets. Each dataset contains the earthquakes grouped by decade; 1980-1989, 1990-1999, 2000-2009, 2010-2019. However, the National Earthquake Database makes available seismic bulletin data from 1985 and onward. For a complete listing of current and historical earthquakes, visit http://www.earthquakescanada.nrcan.gc.ca/.

Map of Canada showing location of facilities reporting disposals and transfers for the most recent year, by reported total quantities. The National Pollutant Release Inventory (NPRI) is Canada's public inventory of pollutant releases (to air, water and land), disposals and transfers for recycling. Under the authority of the Canadian Environmental Protection Act, 1999 (CEPA 1999), owners or operators of facilities in Canada that meet the published reporting requirements are required to report to the NPRI. Reported pollutants include toxic substances, air pollutants and other substances of concern. More NPRI datasets and mapping products are available here: https://www.canada.ca/en/environment-climate-change/services/national-pollutant-release-inventory/tools-resources-data/access.html

The compilation represents publicly available reports of geochronological information for Canada. This includes federal, provincial and territorial government publications and reports, university theses, books and journals. Current coverage is limited to those areas that have been the target of recent past compilation efforts, with other areas and updates being included as they become ready. Users should be aware that the compilation may not include all available data for a given area. Every effort is made to report the ages without reinterpreting the original authors' intent. However, care has also been taken to highlight the salient features of the data by which the end-user can make initial judgment on the data robustness. Users are cautioned that because of space limitations and the necessary summarization of often complex datasets, that the original publication should be consulted to verify age interpretations and their rationale. Data may be extracted by the user in tab-delimited text format.

The Ocean Data Inventory database is an inventory of all of the oceanographic time series data held by the Ocean Science Division at the Bedford Institute of Oceanography. The data archive includes about 5800 current meter and acoustic doppler time series, 4500 coastal temperature time series from thermographs, as well as a small number (200) of tide gauges. Many of the current meters also have temperature and salinity sensors. The area for which there are data is roughly defined as the North Atlantic and Arctic from 30° - 82° N, although there are some minor amounts of data from other parts of the world. The time period is from 1960 to present. The database is updated on a regular basis.

DFO Science monitors for AIS in the Gulf Region along with several provincial agencies, universities and NGOs. The data collected from DFO's biofouling monitoring program provides an overview of the distribution and abundance of Aquatic Invasive Species (AIS) in the Gulf Region. This information can be used by the general public, scientists and DFO managers.

Environment and Climate Change Canada’s cause-effect monitoring is focused on understanding how boreal songbirds, including several Species at Risk, are affected by human activity in the oil sands area, particularly the impact of the physical disturbance of forested habitats from exploration, development and construction of oil sands. Determining the abundance of songbird species associated with various habitat type(s) and understanding how the type and number of birds varies with type and amount of habitat, are important components of assessing the effect of habitat disturbance. Regional-scale monitoring focuses on understanding how and why boreal songbirds, including several Species at Risk, are affected by human activity across the Peace, Athabasca and Cold Lake oil sands area. Local-scale projects focus on addressing gaps in our understanding of complex response patterns at regional scales by targeting specific habitats or development features of interest. These data contribute to: a. improving the design of monitoring programs; b. explaining observed trends in populations (why bird populations are increasing or decreasing); c. predicting population sizes within the oil sands area; and d. assessing the individual, additive and cumulative effects of oil sands and other resource development on boreal birds. Data are used by ECCC and our partners to develop new models and increase the robustness of existing models of bird responses to habitat and disturbance. Because models can be used to predict outcomes of future land management scenarios, these models can assist decision-making by helping evaluate land-use choices before impacts are directly observed.

Each year, rotary screw traps (smolt wheels) are installed in the Kedgwick River, Upsalquitch River and main Restigouche channel from early/mid May to mid/late June. All traps are checked daily, and all fish species are counted. The majority of Atlantic salmon smolts are measured and a fraction are weighted. Everyday, Atlantic salmon smolts are tagged with unique streamer tags and released upstream of the trap they were caught in with the hope that a fraction of them will be recaptured so the trap efficiency and abundance can be estimated (capture-mark-recapture experiment).

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 (2004-2018). The specificities of the missions onboard the MV Lady Hammond are described below. Objectives: 1. Assess groundfish populations abundance and condition 2. Assess environmental conditions 3. Inventory species biodiversity 4. Monitor the pelagic ecosystem 5. Collect samples for various research projects Survey description The survey covers the northern Gulf of St. Lawrence, that is the divisions 4R, 4S and the northern part of division 4T of the Northwest Atlantic Fisheries Organization (NAFO). A stratified random sampling strategy is used for this survey and the fishing gear used on the MV Lady Hammond is a bottom trawl Western IIA. Standard trawling tows last 30 minutes, starting from the time the trawl touches the sea floor. Towing speed is 3.5 knots. Data For each fishing tow, the catch is sorted and weighed by taxa; biological data are then collected. For fish, crab and squid, size and weight are gathered by individual and, for some species, sex, gonad maturity, and the weight of certain organs (stomach, liver, gonads) are also evaluated. The soft rays of the anal fin are counted for redfish and otoliths are collected for redfish and Atlantic cod. Invertebrates are counted (no individual measurements) and photographed. The catches per tow for fish taxa (presence or absence, count by species and catch weight (kg)) are available below.

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 (2004-2019). The specificities of the missions onboard the CCGS Teleost are described below. Objectives: 1. Assess groundfish and northern shrimp population abundance and condition 2. Assess environmental conditions 3. Inventory species biodiversity 4. Assess phytoplankton and mesozooplankton abundance 5. Monitor the pelagic ecosystem 6. Inventory marine mammals populations 7. Inventory seabirds populations 8. Collect samples for various research projects Survey description The survey covers the Estuary and the northern Gulf of St. Lawrence, that is the divisions 4R, 4S and the northern part of division 4T of the Northwest Atlantic Fisheries Organization (NAFO). Since 2008, coverage of division 4T has been increased in the upstream part of the Lower Estuary in order to sample the depths between 37 and 183 m. A stratified random sampling strategy is used for this survey and the area of the study area is 118,587 km². The fishing gear used on the CCGS Teleost is a four-sided Campelen 1800 shrimp trawl equipped with a Rockhopper footgear (“bicycle”). The trawl lengthening and codend are equipped with a 12.7-mm knotless nylon lining. Standard trawling tows last 15 minutes, starting from the time the trawl touches the sea floor. Towing speed is 3 knots. Data For each fishing tow, the catch is sorted and weighed by taxa; biological data are then collected on a subsample. For fish, crab and squid, size and weight are gathered by individual and, for some species, sex, gonad maturity, and the weight of certain organs (stomach, liver, gonads) are also evaluated. The soft rays of the anal fin are counted for redfish, and the otoliths are sampled for several species such as Atlantic cod, Atlantic halibut, and witch flounder. A roughly 2-kg shrimp sample is sorted and weighed by species (and by stage of maturity for northern shrimp). The shrimps are measured individually. The other invertebrates are counted (no individual measurements) and photographed. The catches per tow for fish taxa (presence or absence, count by species and catch weight (kg)) are available below. This data is also available via the 'Biodiversity' application on the St. Lawrence Global Observatory (SLGO). The data concerning benthic invertebrates is presently excluded but are available on request.

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 surveys The 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. The fishing gear is a 300 Star Balloon trawl mounted on a Rock Hopper footgear. The trawl mesh size is 145 mm with a liner of 40 mm in the codend. Data are collected by at-sea fisheries observers from Biorex (Quebec) or Seawatch (Newfoundland). Data For each trait, the total catch is sorted and weighed by species. Biological data such as length, weight (sampled, per individual, gonad, liver and stomach), sex and maturity are then collected on a subsample of many species such as Atlantic halibut, Greenland halibut, lumpfish, Atlantic cod, herring and capelin. Otoliths are only sampled on Atlantic cod. The catches per tow (presence or absence, count by species and catch weight (kg)) for the Atlantic halibut, Greenland halibut, Atlantic cod and redfish are available below. This data is also available via the 'Biodiversity' application on the St. Lawrence Global Observatory (SLGO) website.