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e-Book An Atlas of Contaminants in Eggs of Fish-eating Colonial Birds of the Great Lakes (1970-1988). Volume I. Accounts of Species and Locations (Technical Report Series No. 152. Ontario Region, Canadian Wildlife Service) download

e-Book An Atlas of Contaminants in Eggs of Fish-eating Colonial Birds of the Great Lakes (1970-1988). Volume I. Accounts of Species and Locations (Technical Report Series No. 152. Ontario Region, Canadian Wildlife Service) download

by Christine A. Bishop and others

ISBN: 0662196228
ISBN13: 978-0662196228
Publisher: Environment Canada (1992)
Subategory: Unsorted

ePub size: 1854 kb
Fb2 size: 1188 kb
DJVU size: 1593 kb
Rating: 4.9
Votes: 948
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Populations of osprey (Pandion haliaetus) in the Great Lakes basin declined dramatically during the 1950s–1970s due largely to adverse effects . An atlas of contaminants in eggs of fish-eating colonial birds of the Great Lakes.

Populations of osprey (Pandion haliaetus) in the Great Lakes basin declined dramatically during the 1950s–1970s due largely to adverse effects of persistent chlorinated hydrocarbons, ingested in their fish prey, on eggshell thickness and adult survival. Nevertheless, these contaminants were not measured in osprey tissues during the decades of decline on the Canadian Great Lakes.

The levels of organochlorine contaminants (OCs) in the eggs of double-crested cormorants (Phalacrocorax auritus) . Similar levels of PCDDs and PCDFs were observed from all regions of the Canadian Great Lakes in 1989.

The levels of organochlorine contaminants (OCs) in the eggs of double-crested cormorants (Phalacrocorax auritus) from the Canadian Great Lakes, Lake Nipigon and Lake-of-the-Woods were monitored. In general, OC levels in cormorant eggs between 1984-95 were ranked as follows: Lake Erie Lake Ontario ≥ Lake Superior Lake Huron. In 1995, eggshell thickness in Canadian Great Lakes cormorants, ranged from . 23 to . 40 mm and was on average only . % thinner than pre-DDT era values.

An atlas of contaminants in eggs of colonial fish-eating birds of the Great Lakes (1970-1988). Except for black-crowned night-herons, the nesting populations of colonial waterbirds have increased between 21 and 1061 % since the last survey in 1987.

Together, let's build an Open Library for the World. An Atlas of contaminants in eggs of fish-eating colonial birds of the. Are you sure you want to remove An Atlas of contaminants in eggs of fish-eating colonial birds of the Great Lakes (1970-1988) from your list? An Atlas of contaminants in eggs of fish-eating colonial birds of the Great Lakes (1970-1988). Published 1992 by Canadian Wildlife Service in Burlington, Ont.

Volume I. Canadian Wildlife Service, Ontario Region, Technical Report No. 152. 400 pp. Bishop, . Norstrom, R. Turle, and . An atlas of contaminants in eggs of colonial fish-eating birds of the Great Lakes (1970-1988). Volume II. 153. 300 pp. Canadian Wildlife Service, Environment and Climate Change Canada. A Wildlife Policy for Canada.

Chlorinated hydrocarbon concentrations in eggs of fish-eating birds from contaminated environments such as the Great Lakes of North America tend to be highly intercorrelated, making it difficult to elucidate mechanisms causing reproductive impairment, and to ascribe cause to specific.

Chlorinated hydrocarbon concentrations in eggs of fish-eating birds from contaminated environments such as the Great Lakes of North America tend to be highly intercorrelated, making it difficult to elucidate mechanisms causing reproductive impairment, and to ascribe cause to specific chemicals. An information- theoretic approach was used on data from 197 salvaged bald eagle (Haliaeetus leucocephalus) eggs (159 clutches) that failed to hatch in Michigan and Ohio, USA (1986-2000). Contaminant levels declined over time while eggshell thickness increased, and by 2000 was at pre-1946 levels

Electronic Atlas of Fish Eggs and Larvae for the Scotian Shelf and .

Electronic Atlas of Fish Eggs and Larvae for the Scotian Shelf and Adjacent Areas The Scotian Shelf Electronic Atlas of Fish Eggs and Larvae is a database of scientific information on the seasonality and distribution of fish eggs and larvae, and spawning areas at the Scotian Shelf, Bay of Fundy, Georges Bank, Gulf of Maine and adjacent areas. In light of changes in commercial species and rising interest in non-target species, the updated interactive web-based atlas incorporated data on fish distributions and their projected evolution over the next three decades.

Colonial fish-eating birds have been used as convenient model populations in which to study the impact of chronic exposure to complex mixtures of persistent lipophilic environmental contaminants within the Great Lakes ecosystem

Colonial fish-eating birds have been used as convenient model populations in which to study the impact of chronic exposure to complex mixtures of persistent lipophilic environmental contaminants within the Great Lakes ecosystem. To date, published reports of contaminant-induced adverse reproductive outcomes exist for six species.

The Great Lakes region includes the five lakes and many thousands of. .

The Great Lakes region includes the five lakes and many thousands of smaller lakes, often called inland lakes. The Great Lakes are home to a variety of species of fish and other organisms. In recent years, overfishing caused a decline in lake trout. The drop in lake trout increased the alewife population.

It is the smallest of the Great Lakes by area, but still ranks as the world’s 13th-largest lake. It does however have a greater volume than Lake Erie due to a much greater average depth.

1993. Technical Report Series No. 182. Ontario Region, Canadian Wildlife Service. Environment Canada. 103 pages.
ISBN: 9241208112
ISBN13: 978-9241208116
language: English
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ISBN13: 978-0833039293
language: English
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ISBN: 0774360747
ISBN13: 978-0774360746
language: English
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language: English
Subcategory: Canada
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language: English
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language: English