Environment and Climate Change Canada

These datafiles contain observations collected with the Atmospheric Composition and Environmental Survey (ACES) platform during a series of mobile surveys in the Greater Toronto Area (GTA) in 2022. Each file contains calibrated data from a LI-COR LI-7810 and from an Airmar 220-WX weather station....

These datafiles contain observations collected with the Atmospheric Composition and Environmental Survey (ACES) platform during a series of mobile surveys in the Greater Toronto Area (GTA) in 2023. Each file contains calibrated data from a LI-COR LI-7810 and from an Airmar 220-WX weather station....

These datafiles contain observations collected with the Atmospheric Composition and Environmental Survey (ACES) platform during a series of mobile surveys in the metropolitan area of Ottawa in October 2022. Each file contains calibrated data from a LI-COR LI-7810 and from an Airmar 220-WX weather...

St. Helena Island supports nationally significant populations of northern fulmar (Fulmarus glacialis), Thayer’s gull (Larus thayeri) and High Arctic brant (Branta bernicla hrota), as well as locally important numbers of other species including common eiders (Somateria mollissima borealis) and...

Waterfowl and waterbird populations were monitored in wetlands and ponds along the highway corridors in the southern Yukon between 1991 – 2016. Approximately 200 wetlands were surveyed once a week for a period of 5 weeks beginning in early May (1991 – 2014); the survey period was reduced to 4...

This study aimed to evaluate the toxicity of naphthenic acid fraction components (NAFC) from fresh oil sands affected-water (OSPW) on the embryo-larval stage of the fathead minnow (Pimephales promelas) and the walleye (Sander vitreus). The assessed endpoints were hatch success, growth,...

This study aimed to determine whether the pharmaceutical metformin had toxicological effects on the fathead minnow (Pimphales promelas) in their various life stages—from eggs to adulthood. Endpoints included survival, growth, and reproductive development. Fathead minnows were exposed to metformin...

This study aimed to provide insights into how climate-driven diet shifts may impact contaminant exposures of Arctic species. We compared feeding ecology and contaminant concentrations in ringed seals (Pusa hispida) from two Canadian sub-Arctic (Nain and Arviat) and two Arctic sites (Sachs Harbour...

Tire wear particles end up on roads where they may run off into nearby rivers and lakes by rain and snowmelt. This study examined how toxic these tire particles are to eggs and the newly hatched larvae of the fathead minnow (Pimephales promelas). Tire particles were finely ground up and were...

In 2006, the Government of Canada initiated the Chemicals Management Plan (CMP), which takes action regarding chemicals that are harmful to human health or the environment. One element of the CMP is Monitoring and Surveillance, which generates data on the presence and levels of chemical...

This study investigated short-chain (C10-13) chlorinated paraffins (SCCP) in an Arctic marine food web. In zooplankton, fishes and ringed seals from western Hudson Bay, Canada, SCCP concentrations ranged from 38.3 to 687 ng g-1 lipid weight. Monte Carlo-simulated trophic-adjusted biomagnification...

This dataset contains the growth and survival data for Fathead minnow (Pimephales promelas) exposed to sediment from eleven sites within the St. Marys Area of Concern, as well as reference sediment (a mixture of sediment from two reference sites within Lake Erie, Long Point Marsh and Long Point...

Propranolol is a human pharmaceutical b-blocker that has been detected in municipal wastewater effluents in low concentrations. To assess the potential of this compound to affect fish, Fathead minnow (Pimephales promelas) were exposed for a life cycle in a flow-through system to nominal...

Aerial surveys were performed in the Rasmussen Lowlands, Nunavut, to determine the numbers and distribution of Greater White-fronted Geese and other waterfowl species. Surveys were carried out in the Lowlands from 20-24 June 1994 and 20-25 June 1995. The survey procedure included flying straight...

The Hudson Bay Lowlands (HBL) is the wettest ecozone in Canada with 80% of its area covered by wetlands. It forms the third largest wetland in the world and is composed almost entirely of permafrost and non-frozen subarctic peatlands that store more carbon in the first 2 m of soil than the total...

The purpose of this study was to assess the release and characterization of forms of silver nanoparticles (AgNPs) in urban effluents across Canada. Samples were collected from various wastewater treatment plants and were measured and analyzed using the single particle ICP-MS technique...

The Rusty Blackbird (Euphagus carolinus) breeds in boreal forest wetlands across North America, and winters in the southeastern USA. This species is listed under Canada’s Species at Risk Act as Special Concern due to population declines. For the study, 1220 Rusty Blackbirds were captured in...

We conducted a species-specific survey for Common Nighthawk (Chordeiles minor) near the northwestern limit of the species’ breeding distribution, in order to investigate relative abundance and also to determine whether a species-specific survey protocol being established for Canada would be...

We documented seasonal and daily activity patterns of Common Nighthawk (Chordeiles minor) near Whitehorse, Yukon, to evaluate the appropriateness at higher latitudes of national survey protocols for this species. Nighthawk vocalizations and audible aerial displays were detected at four locations...

We monitored a colony of Cliff Swallows (Petrochelidon pyrrhonota) nesting on an artificial nesting structure that had been built for this species, near the Dezadeash River in Haines Junction, Yukon (60o 44’ 58” N/ 137o 30’ 33” W). We took photographs of the nesting surface of each of the 16...