Anthropogenic, Polyhalogenated, Organic Compounds in Non-Migratory Fish from the Niagara River Area and Tributaries to Lake Ontario

1986 ◽  
Vol 12 (1) ◽  
pp. 63-71 ◽  
Author(s):  
Rudolf Jaffe ◽  
Ronald A. Hites
Keyword(s):  
Organic Compounds ◽  
Lake Ontario ◽  
Migratory Fish ◽  
Niagara River

Evidence of successful river spawning by lake trout (Salvelinus namaycush) in the Lower Niagara River, Lake Ontario

2021 ◽  
Author(s):  
Alexander Gatch ◽  
Dimitry Gorsky ◽  
Zy Biesinger ◽  
Eric Bruestle ◽  
Kelley Lee ◽  
...  
Keyword(s):  
Lake Trout ◽  
Lake Ontario ◽  
Salvelinus Namaycush ◽  
Niagara River

Chlorinated Hydrocarbons in the Surface Microlayer and Subsurface Water of the Niagara River, 1985-86

1988 ◽  
Vol 23 (2) ◽  
pp. 292-300 ◽  
Author(s):  
R. James Maguire ◽  
Richard J. Tkacz
Keyword(s):  
Chlorinated Hydrocarbons ◽  
Lake Ontario ◽  
Subsurface Water ◽  
Surface Microlayer ◽  
Water Interface ◽  
Niagara River ◽  
Niagara Falls ◽  
Increased Risk ◽  
Air Water Interface ◽  
High Concentrations

Abstract The surface microlayer of the Niagara River at Niagara-on-the-Lake was sampled 34 times in 1985-86, and was shown to contain PCBs, chlorobenzenes and chlorinated hydrocarbons at concentrations generally up to 40 times greater than concentrations 1n subsurface water. Organisms which spend part or all of their lives at the air-water interface are thus likely to be at increased risk relative to subsurface water exposure. A small “spill” of PCBs 1n the river on July 29, 1986 was only detected in the surface micro-layer, and not in subsurface water. On this date, concentrations of PCBs in the surface microlayer were up to 6,400 times larger than concentrations in the subsurface water, and 1t appeared that the “spill” was downstream of Niagara Falls and the Whirlpool. Despite such high concentrations of chlorinated hydrocarbons in the surface microlayer, at no time during this study did the microlayer contribute significantly, relative to subsurface water, to the loading (i.e., amounts) of these chemicals from the Niagara River to Lake Ontario.

Invasive species alter ontogenetic shifts in the trophic ecology of Lake Sturgeon (Acipenser fulvescens) in the Niagara River and Lake Ontario

2017 ◽  
Vol 19 (5) ◽  
pp. 1533-1546 ◽  
Author(s):  
Gregory R. Jacobs ◽  
Eric L. Bruestle ◽  
Anna Hussey ◽  
Dimitry Gorsky ◽  
Aaron T. Fisk
Keyword(s):  
Invasive Species ◽  
Trophic Ecology ◽  
Lake Ontario ◽  
Lake Sturgeon ◽  
Acipenser Fulvescens ◽  
Niagara River ◽  
Ontogenetic Shifts

The Distribution of Mercury in the Sediments of Lake Ontario

1972 ◽  
Vol 9 (6) ◽  
pp. 636-651 ◽  
Author(s):  
R. L. Thomas
Keyword(s):  
Mercury Concentration ◽  
Lake Ontario ◽  
Average Concentration ◽  
Sediment Type ◽  
Lake Basin ◽  
Niagara River ◽  
Fine Sediments ◽  
High Mercury ◽  
Main Lake ◽  
Recent Sediments

Total mercury has been analysed in the surface 3 cm of sediment taken from 287 sample stations on an 8 km grid on Lake Ontario during 1968. The mercury distribution shows well-defined trends which can be related to sediment type; the concentration of mercury increasing from the shallow nearshore coarse sediments outwards, into the central, deep-water basin sediments composed of fine silty clays and clays. The average concentration of mercury in the nearshore sediments is 355 ppb, in the basin sediments 997 ppb and the average for the whole lake is 651 ppb. Regions of high mercury concentration (in the order of 2000 ppb) occur along the southern margin of the main lake basin and in the western (Niagara) basin of the lake. The dispersion pathways of these two regions point to the Niagara River as the prime source of mercury input to Lake Ontario. Most of this mercury is believed to be of industrial origin. An additional area of high mercury concentration with values up to 20 000 ppb, occurs at the eastern end of Lake Ontario (Kingston Basin) in the region of the lake close to the outlet to the St. Lawrence River. These high values in organic-rich, fine sediments are likely related to processes of biological concentration. The concentrations of mercury observed in the recent sediments of Lake Ontario can be accounted for by an average minimum daily input of 125 lb (56.7 kg) of mercury of which an estimated 42 lb (19.0 kg) is of natural origin and the remaining 83 lb (37.6 kg) is from industrial sources. The vertical distribution of mercury in a selected sediment core suggests that industrial mercury input commenced about the turn of the century, rose rapidly to circa 1943 and, since then, has shown a slow but continued rise to the time of core retrieval in 1970.

Occurrence of triazine herbicides and metolachlor in the Niagara River and other major tributaries draining into Lake Ontario

1998 ◽  
Vol 376 (1) ◽  
pp. 113-117 ◽  
Author(s):  
Donna Zaruk ◽  
Mehran Alaee ◽  
Ed Sverko ◽  
Mike Comba
Keyword(s):  
Lake Ontario ◽  
Triazine Herbicides ◽  
Niagara River

Compartmental Distribution of Organochlorine Contaminants in the Niagara River and the Western Basin of Lake Ontario

1983 ◽  
Vol 9 (2) ◽  
pp. 287-294 ◽  
Author(s):  
Michael E. Fox ◽  
John H. Carey ◽  
Barry G. Oliver
Keyword(s):  
Lake Ontario ◽  
Western Basin ◽  
Niagara River ◽  
Organochlorine Contaminants

Is the Hyde Park Dump, near the Niagara River, Still Affecting the Sediment of Lake Ontario?

1996 ◽  
Vol 30 (3) ◽  
pp. 969-974 ◽  
Author(s):  
Michael J. Howdeshell ◽  
Ronald A. Hites
Keyword(s):  
Lake Ontario ◽  
Niagara River

The construction and operation of the First, Second, and Third Welland canals

1991 ◽  
Vol 18 (3) ◽  
pp. 472-483
Author(s):  
John N. Jackson
Keyword(s):  
Industrial Development ◽  
Lake Erie ◽  
Water System ◽  
Lake Ontario ◽  
The West ◽  
Niagara River ◽  
Niagara Falls ◽  
Water Power ◽  
Niagara Escarpment ◽  
Grand River

The Welland canals are features of great Canadian renown in terms of engineering, as transportation arteries, and through their contributions to industrial development and urban achievement. Their instigator was William Hamilton Merritt, a St. Catharines businessman. Functionally, they must be perceived as an inland extension of the St. Lawrence system of waterways. These contributions began when the First Welland Canal opened in 1829, and extend continuously up to the present. The First Welland Canal, fed from the Grand River, was constructed through the canalization of rivers north of the Niagara Escarpment, by locks across this relief barrier, and a man-made cut to the south. The canal then took advantage of the Welland and Niagara rivers to reach Lake Erie. Hardly a feature of this achievement was as anticipated and, in 1833, the route was changed by a cut direct to Lake Erie at Port Colborne. The Second Canal, opened in 1845, followed essentially the same route, but with stone locks and a new channel constructed slightly to the west of its predecessor. The Third Canal was wider and deeper. It offered fewer locks and, though retaining Port Dalhousie as its northern outlet on Lake Ontario, its alignment was now a cut east of St. Catharines and Thorold across the Ontario Plain. The Second Canal remained in use at the two ends for the smaller-sized vessels to serve St. Catharines and Thorold, and its water supply continued to power industry until hydroelectricity was obtained from the power projects on the Niagara River at Niagara Falls. Key words: Welland Canal, St. Lawrence–Great Lakes water system, William Hamilton Merritt, transportation, Grand River, Lake Erie, Lake Ontario, water power, industrial location, urban growth.

Evidence of Contaminant Loading to Lake Ontario from the Niagara River

1985 ◽  
Vol 42 (7) ◽  
pp. 1278-1289 ◽  
Author(s):  
A. H. El-Shaarawi ◽  
S. R. Esterby ◽  
N. D. Warry ◽  
K. W. Kuntz
Keyword(s):  
Drinking Water ◽  
Large Volume ◽  
Lake Ontario ◽  
Suspended Sediments ◽  
Organic Substances ◽  
Environment Canada ◽  
Niagara River ◽  
Statistical Procedures ◽  
Multivariate Procedures ◽  
Canada Data

The hypothesis that the concentrations of pollutants are the same throughout the length of the Niagara River, against the alternative that they are higher in the lower river, was examined using three sets of data: (1) Ontario Ministry of Environment's (MOE) results for organic substances in raw drinking water (1978–84); (2) MOE transect data for metals in water (1981); (3) Environment Canada data on organic substances in large-volume water samples and suspended sediments (1981). The designs of the studies dictated different statistical procedures for each set, with nonparametric procedures based on ranking being used for sets 1 and 3, and normal theory methods for set 2. Further, both univariate and multivariate procedures were used for set 3. Despite the considerable number of nondetections in these data, it was still possible to make quantitative comparative statements, with the degree of uncertainty providing the quantitative component. In each study, a number of substances were shown to be higher in the lower river than in the upper river, and by examining all substances of set 3 simultaneously, locations in the lower river were shown to be similar to each other as were locations in the upper river.

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