Results 191 to 200 of about 61,430 (223)

Distribution of contaminants in biota and sediments in the Musquash Estuary, Atlantic Canada, marine protected area site initiative and contaminant exclusion zone

Marine Pollution Bulletin, 2004
The Musquash Estuary, one of the last ecologically intact estuaries in New Brunswick, has been designated an area of interest for a marine protected area (MPA) under the Oceans Act. The area has been assessed for contaminant background levels as required for establishing MPA environmental quality.
C L, Chou, L A, Paon, J D, Moffatt, M-I, Buzeta, D, Fenton, R J, Rutherford   +5 more
openaire   +3 more sources

Concentration dependency of biota-sediment accumulation factors for chlorinated dibenzo-p-dioxins and dibenzofurans in dungeness crab (Cancer magister) at marine pulp mill sites in British Columbia, Canada

Environmental Toxicology and Chemistry, 2000
AbstractBiota-sediment accumulation factors (BSAFs) for some chlorinated dibenzo- p -dioxin and dibenzofuran congeners (PCDD/Fs) in Dungeness crab (Cancer magister) hepatopancreas and associated sediments are concentration independent as required by equilibrium partition models. In particular 2, 3, 7, 8-tetrachlorodibenzo-p -dioxin (2, 3, 7, 8-TCDD), 2,
Walter J. Cretney, Mark B. Yunker
openaire   +2 more sources

Persistent organic contaminants in sediments and biota of Great Slave Lake, Canada: Slave River and long-range atmospheric source influences

Journal of Great Lakes Research, 2016
Abstract Over 1993–1996, we conducted a series of studies to investigate the distributions of legacy persistent organic pollutants (POPs) in the West Basin and East Arm of Great Slave Lake with a focus on sediments and fish species common in traditional diets; lesser attention was paid to polynuclear aromatic hydrocarbons (PAHs) and chemicals ...
Marlene S. Evans, Derek C.G. Muir
openaire   +2 more sources

Impact of a Commercial Peat Moss Operation on Water Quality and Biota in a Small Tributary of the Richibucto River, Kent County, New Brunswick, Canada

Archives of Environmental Contamination and Toxicology, 2002
The St-Charles Plain (Kent County, New Brunswick, Canada) commercial peat moss operation has been ongoing since 1983. To process the peat, a dry extraction method is used that requires extensive drainage of the peat bog. The water is directed toward sedimentation ponds, where it drains into a small brook, which feeds into a river affected by tidal salt
C, Surette, G L, Brun, V N, Mallet
openaire   +3 more sources

Baseline assessment of contaminants in marine biota prior to remediation of industrial effluent impacted sediments in a former tidal estuary in Nova Scotia, Canada

Marine Pollution Bulletin, 2019
Contaminated sediments at a pulp mill and former chor-alkali effluent treatment facility in Nova Scotia, Canada will undergo remediation. However, baseline studies assessing contaminants in marine biota in the marine receiving environment are lacking.
Jessica Romo, Meenakshi Chaudhary, Tony R. Walker   +2 more
openaire   +3 more sources

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Effects of acidification on aquatic biota in Atlantic Canada

Environmental Reviews, 2011
Acidification of surface waters is a high-profile environmental issue in Atlantic Canada. Despite a reduction of emissions of acid-precursors (particularly SO2) by more than 50% in major regions in...
P. Lacoul, B. Freedman, T. Clair
openaire   +1 more source

Fission-Track Dating of Haughton Astrobleme and Included Biota, Devon Island, Canada

Science, 1987
Haughton Astrobleme is a major extraterrestrial impact structure located on Devon Island in the Canadian Arctic Archipelago, Northwest Territories. Apatite grains separated from shocked Precambrian gneiss contained in a polymict breccia from the center of the astrobleme yielded a fission-track date of 22.4 million ± 1.4 million years before the present
G, Omar, K R, Johnson, L J, Hickey, P B, Robertson, M R, Dawson, C W, Barnosky   +5 more
openaire   +2 more sources

Distribution of organically bound tritium (OBT) activity concentrations in aquatic biota from eastern Canada

Journal of Environmental Radioactivity, 2019
A survey of eastern Canadian biota was conducted to determine the distribution of activity concentrations of organically bound tritium (OBT). Fish samples were collected from Lake Ontario and the St. Lawrence River in areas continuously receiving inputs of tritiated water (HTO) from operating nuclear power plants, and from Lake Nipissing, a background ...
S B, Kim, M, Bredlaw, H, Rousselle, M, Stuart   +3 more
openaire   +2 more sources

Identifying Sources and Biomagnification of Persistent Organic Contaminants in Biota from Mountain Streams of Southwestern British Columbia, Canada

Environmental Science & Technology, 2005
We assessed whether biota occupying mountain streams accumulate and biomagnify remotely derived organic pollutants originating from atmospheric inputs to snowpack and glacial runoff and from marine sources introduced by migrating anadromous salmon. Several persistent organic pollutants including polychlorinated biphenyls (PCBs), p,p'-dichloro-diphenyl ...
Christy A, Morrissey, Leah I, Bendell-Young, John E, Elliott   +2 more
openaire   +2 more sources

Arsenic in sediments, water and aquatic biota from lakes in the vicinity of Yellowknife, Northwest Territories, Canada

Archives of Environmental Contamination and Toxicology, 1978
Arsenic concentrations were measured in aquatic invertebrates, macrophytes, sediments, and water of lakes in the vicinity of Yellowknife (N.W.T.), Canada. In arsenic-contaminated lakes the arsenic concentration ranged from 0.70 to 5.5 ppm in water, 6 to 3,500 ppm in bottom sediments, 150 to 3,700 ppm in macrophytes, 700 to 2,400 ppm in zooplankton, and
R, Wagemann, N B, Snow, D M, Rosenberg, A, Lutz   +3 more
openaire   +2 more sources