Type of resources
Contact for the resource
Sidney Island Shorebirds Survey transects line feature.
Observations on various types of wetlands, terrestrial environments, and vascular plants for 102 sites visited in 2012 and located on Lake Saint-Pierre are included in this dataset. Since the 1970s, Environment and Climate change Canada (ECCC) has been monitoring changes in wetlands under the State of the St. Lawrence River Monitoring program of the St. Lawrence Action Plan.
Sidney Island Shorebird Surveys transects area feature.
This dataset contains blended (gauge and satellite estimates) pentad mean precipitation rates (unit: mm/day) at a one degree spatial resolution over Canada. The data can be used for hydrometeorological, agricultural, forestry modelling, for numerical weather model and climate model verification, and for climate impact studies.
Survey areas is a polygon feature class containing mudflats and staging areas observed for shorebirds.
The Canadian Environmental Sustainability Indicators (CESI) program provides data and information to track Canada’s performance on key environmental sustainability issues. The human health impacts related to pollution indicators data collection contains datasets that assess human exposure to environmental chemicals and the potential effects this exposure may have on health. This information is provided in a number of formats including: static and interactive maps, charts and graphs, HTML and CSV data tables, and downloadable reports.
"The Canadian Environmental Sustainability Indicators (CESI) program provides data and information to track Canada's performance on key environmental sustainability issues. The Air pollutant emissions indicators track emissions from human activities of 6 key air pollutants: sulphur oxides, nitrogen oxides, volatile organic compounds, ammonia, carbon monoxide and fine particulate matter. Black carbon, which is a component of fine particulate matter, is also reported. Sectoral indicators on air pollutant emissions from transportation, off-road vehicles and mobile equipment, electric utilities and the oil and gas industry provide additional analysis on the largest sources of Canada's air pollutant emissions. For each air pollutant, the indicators are provided at the national and provincial/territorial levels. They also identify the major sources of emissions and provide links to detailed information on air pollutant emissions from facilities. The Air pollutant emissions indicators are intended to inform Canadians and decision makers about progress made towards reducing emissions from human-related sources of air pollutants and about the effectiveness of emission reduction measures implemented to improve ambient air quality in Canada. Information is provided to Canadians in a number of formats including: static and interactive maps, charts and graphs, HTML and CSV data tables and downloadable reports. See the supplementary documentation for the data sources and details on how the data were collected and how the indicator was calculated. Canadian Environmental Sustainability Indicators: https://www.canada.ca/environmental-indicators
Survey points is a point feature class containing transects and observations completed in 2011.
The Water Survey of Canada (WSC) is the national authority responsible for the collection, interpretation and dissemination of standardized water resource data and information in Canada. In partnership with the provinces, territories and other agencies, WSC operates over 2800 active hydrometric gauges across the country. WSC maintains and provides real-time and historic hydrometric data for some 8000 active and discontinued stations. This dataset consists of a set of polygons that represent the drainage areas of both active and discontinued discharge stations. Users are encouraged to report any errors using the “Contact Us” webpage at: https://wateroffice.ec.gc.ca/contactus/contact_us_e.html.
These surveys focus on two abundant shorebird species, Western Sandpiper (Calidris mauri) and Dunlin (Calidris alpina), and are conducted at a large mudflat on Roberts Bank, Delta, British Columbia, approximately 35 km south of Vancouver. These survey counts began in 1991 and are conducted annually during the northern migration period (April and May). Species-specific counts are derived from total flock counts multiplied by an estimate of percentage composition of the two species. The Brunswick Point study site (49°03′ N, 123°09′ W) extends over the southern third of Roberts Bank, and encompasses a large mudflat (tidal range = 0 – 3.8 m) separated from agricultural fields by a dike. Vegetation in the near shore sections of the mudflat is composed mostly of saltmarsh and bushes. Sediments in the mudflat range from soft mud to sand, and portions of the lower intertidal zone are covered with eelgrass (Zostera marina and Z. japonica). A causeway supporting a major port facility separates the mudflat from the remainder of Roberts Bank, and the dike is used for recreational purposes. Total flock counts. The number of total flock counts conducted annually varied from seven to 15 counts from 1991 to 1998. Beginning in 1999, counts were conducted either daily or every other day during spring migration for an annual replicate of 17 32 counts. The migration period began on 15 April each year and continued until lesser than 1000 birds were observed or until 15 May, whichever came first. This timing was chosen to overlap with the major pulse of Western Sandpiper migration and also captured peak Dunlin numbers. Daily timing of surveys depended on the tide cycle; the start of surveys ranged between 05:45 and 19:00 hr. Counts were conducted at a tide height of 3.5 m, based on tidal predictions at Point Atkinson, British Columbia. This tide height ensured birds were close to shore, with sufficient mudflat exposed to present good feeding opportunities for shorebirds. Occasionally maximum daily tide heights did not reach 3.5 m, and counts on these days were conducted during the actual maximum tide heights. Counts began at the southern end of the Brunswick Point dike where it meets the Roberts Bank Superport causeway. All birds visible on the mudflat were counted from a vehicle along a series of stops on the dike, for a total length of ~2.5 km. Birds were counted through a spotting scope mounted on the vehicle window, primarily for distant flocks, and through binoculars to count birds near the vehicle. Flocks were counted by an initial assessment of flock density, and then by counting blocks incrementally in 50s, 100s, 500s, or 1000s, according to flock size, in each successive field of view across a scan of the entire flock. In 1992, the number of birds in large flocks was estimated by multiplying the number of square metres of mudflat covered by the flock by the average number of sandpipers in several 1-m2 plots estimated by eye (Butler 1994). Species composition: Only total flock counts were conducted prior to 1997, as deriving species-specific counts was complicated by the intermixing of Western Sandpipers and Dunlin in the large flocks. Species-specific counts are calculated as a product of total flock counts and percentage composition of different species. From 1997 onwards, relative species composition (ratio of Western Sandpipers to Dunlins) was estimated during supplementary counts as birds settled on the mudflats before or after the main shorebird counts described above. Numbers of Western Sandpipers and Dunlins were individually tallied along visually estimated 1 m wide strips that ran perpendicular from the dike to the water’s edge, and included both open mudflat and shallow water. Tallies of all strip counts were summed and the species proportion for that day was calculated as the number of each species counted divided by the total number of birds.