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Tuesday, July 28, 2020 | History

2 edition of Trace Concentrations of Organochlorines From Waters of the Gulf of st. Lawrence. found in the catalog.

Trace Concentrations of Organochlorines From Waters of the Gulf of st. Lawrence.

Canada. Atlantic Oceanographic Laboratory. Bedford Institute.

Trace Concentrations of Organochlorines From Waters of the Gulf of st. Lawrence.

by Canada. Atlantic Oceanographic Laboratory. Bedford Institute.

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Published by s.n in S.l .
Written in English


Edition Notes

1

SeriesCanada Bedford Institute Report bi -- 1976-18
ContributionsSmillie, R.D.
ID Numbers
Open LibraryOL21892763M

  1 Introduction Some persistent contaminants, including trace elements and organochlorines, are globally distributed as a result of atmospheric transport and deposition in surface waters. In marine ecosystems, these contaminants reach their greatest concentrations in coastal regions, where they accumulate in sediments (Harrison and Peak, ). The concentrations of various POPs have been measured periodically in habitats and tissues of several such species in the Gulf of Maine and Bay of Fundy. Shellfish, such as mussels, filter contaminated particles and absorb the chemicals from seawater.

Metal and Organo-chlorine Concentrations in Fin-Fish from Irish Waters in Fishery Leaflet Dublin:Marine Institute. Google Scholar; Siebert U, Joris C, Holsbeek L, Benke H, Failing K, Frese K et al.. Potential relation between mercury concentrations and necropsy findings in cetaceans from German waters of the North and Baltic Seas. GBH eggs collected from five heronries along the St. Lawrence River in Quebec in all contained organochlorine residues (Laporte, ). PCBs concentrations were highest at a mean of µg/g wet weight, followed by DDE ( µg/g), DDD ( µg/g), and dieldrin ( µg/g).

ence of organophosphate pesticides in the Alvarado lagoon at the Gulf of Mexico as a potential aspect of high impact contamination. Five pesticides have been identified in the lagoon sediments, of which the most important and highest concentrations are Dimethoate and Chlorpyrifos, with -. The map on the left shows sea surface temperatures for part of the Gulf Stream. The map on the right shows chlorophyll concentrations in the same area.! Examine the two images to look for patterns that would indicate the two quantities are related.


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Trace Concentrations of Organochlorines From Waters of the Gulf of st. Lawrence by Canada. Atlantic Oceanographic Laboratory. Bedford Institute. Download PDF EPUB FB2

Concentrations of the trace elements iron, cobalt, nickel, copper, zinc, cadmium, and lead were measured in samples collected from the waters of the Gulf of St. Lawrence. Concentrations of OC including TCPMe and TCPMeOH in the blubber of Indo-Pacific hump-backed dolphins and finless porpoises from Hong Kong coastal waters are shown in Table e levels of DDTs (sum of p,p ′-DDE, p,p ′-DDD, p,p ′-DDT) were predominant, followed by PCBs, HCHs, chlordane compounds (CHLs), HCB, TCPMe and pattern is similar to that Cited by:   As shown in Fig.

2, concentrations of TCPMe in cetaceans from the North Pacific and Asian coastal waters were lower than those reported in beluga whales from the St. Lawrence River, Canada (Muir et al., a, Muir et al., b), comparable to higher than those in harbor porpoises from the Baltic south coast (Falandysz et al., ).Cited by: Concentrations of organochlorines (OCs), brominated flame retardants (BFRs) and mercury (Hg) were measured in eggs of six seabird species breeding in the Gulf of St.

Lawrence, Canada. Stable nitrogen (δ15N) and carbon (δ13C) isotopes were used as ecological tracers to measure trophic level and connectivity with benthos, by:   In this study, we present the levels of organochlorine (∑DDT, ∑HCH, ∑chlordane, HCB, and ∑PCBs) and metal (Pb, Hg, and Se) contaminants and their relationship to stable carbon and nitrogen isotope values in the Gulf of the Farallones marine food web.

This food web consisted of two species of euphausiids (Euphausia pacifica and Thysanoessa spinifera), two fish species [short-bellied.

The effects of the addition of nutrients (nitrate: N; phosphate: P; and vitamin B1) and trace metals (iron: Fe; Copper: Cu; and selenium: Se) on the growth of Gymnodinium catenatum, which was isolated from Korean coastal waters, were investigated.

The Korean isolate of G. catenatum grew under a wide range of concentrations of N and P. Whilst high concentrations of N (> N: P ratio of The beluga (Delphinapterus leucas) population in the St.

Lawrence Estuary was greatly reduced by hunting, which was finally banned in the St. Lawrence in In Maythis beluga population was officially listed as a threatened species on SARA's List of Wildlife Species at Risk. The concentration of organochlorines (PCB, DDT and its metabolites, HCH isomers and HCB) were determined in mussel, Mytilus edulis from the south west Baltic Sea.

The harbor Kiel Innenförde showed the highest contamination with PCB ( μg/kg dry weight), the Gelting bathing beach area the lowest contamination (38 μg/kg). The highest contamination with DDT was measured in Lübeck bay, which.

The Arctic Monitoring and Assessment Programme (AMAP) made their first assessment of the state of the Arctic environment in Since then substantial new data have been collected during AMAP phase II ().

The results of the Greenland environmental studies are presented and discussed in this second AMAP assessment report.

It is organised into environmental compartments (atmospheric. Organochlorines, brominated flame retardants and mercury levels in six seabird species from the Gulf of St. Lawrence (Canada): Relationships with feeding ecology, migration and molt.

Environmental Pollution, DOI: / Butyltin concentrations often are high in sediments from coastal and estuarine waters supporting boating and shipping activities.

In a study conducted insediments from the vicinity of eight shipyards and six marinas in Hong Kong contained a mean of about mg kg -1 dry wt total organotins, with a maximum concentration of 53 mg kg The concentration of selected contaminant trace metals and organic contaminants, namely polycyclic aromatic hydrocarbons (PAHs), normal-alkanes, total polychlorinated biphenyls (PCBs), and other organochlorines, was studied in cores from shallow-water fine-grain sediments from both sides of the maximum turbidity zone (MTZ) in the upper estuary of the St.

Lawrence. Matthew Hurst "Physical and chemical speciation of trace metals in estuarine and shelf water systems: San Francisco Bay, Gulf of the Farallones and the Bering Sea." Chemistry Ph.D. thesis. Chemistry Ph.D. thesis.

Sea-bird egg consumption as a major source of PCB exposure for communities living along the Gulf of St. Lawrence. Chemosphere Crossref, Google Scholar; Gorman N, Ross KL, Walton HS, Bement WJ, Szakacs JG, Gerhard GS et al. Uroporphyria in mice: thresholds for hepatic CYP1A2 and iron.

Hepatology   Much or most of that flow entering the Gulf occurs between the coast and Browns Bank and includes a mixture of shelf and slope waters emanating from the Labrador Sea (e.g., Chapman and Beardsley, ) and a mixture of those waters with fresh waters from the St.

Lawrence River, inside the Gulf of St. Lawrence. The identification and tracking of. Elsa Arellano-Torres, María Luisa Machain-Castillo, Late Pleistocene-Holocene variability in the southern Gulf of Mexico surface waters based on planktonic foraminiferal assemblages, Marine Micropaleontology, /ro,(), ().

On the constancy of sediment-water partition coefficients of hydrophobic organic pollutants. On the distribution of iron and manganese at the sediment/water interface: thermodynamic versus kinetic control.

Organic carbon isotope ratios and implications for the maximum turbidity zone of the St Lawrence upper estuary.

Gregory D, Petrie B, Jordan F, Langille P. Oceanographic, geographic and hydrological parameters of Scotia-Fundy and southern Gulf of St.

Lawrence inlets. Canadian Technical Report of Hydrographic Ocean Sciences. Gulf of Maine Council on the Marine Environment, Marine Environmental Quality in the Gulf of Maine: Fact Sheet Gulf of St. Lawrence, as well as in birds and their eggs (Simon et al., ). These data, together, indicate that PBDEs are an important global pollutant.

The accumulation of PBDEs is not restricted to wildlife, since studies have shown that concentrations of PBDEs in human breast milk have doubled every 5 years over the past 25 years. Trace Elements, Metals, and Metalloids. Concentrations of Cd in the liver and skeletal muscle of 6 snapping turtles captured in from the Hudson River ranged from.

This study presents mercury concentrations in store‐bough (frozen) shrimp, which were all found to be low, but variable. No effect of harvest type or location was found, although total fat was relate.The subdivisions of the Gulf Stream System proposed by Iselin (), reproduced in figurealthough not entirely accepted in practice, serve as a convenient framework for grouping the research literature.

Starting from the Gulf of Mexico, the Florida Current was la-beled by Iselin as the portion of the Gulf Stream System.Abstract. On 20 Aprilthe Deepwater Horizon explosion, which released a US government—estimated million barrels of crude oil into the Gulf of Mexico, was responsible for the death of 11 oil workers and, possibly, for an environmental disaster unparalleled in US history.

For 87 consecutive days, the Macondo well continuously released crude oil into the Gulf of Mexico.