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The effect of copper and manganese o...

Welbourn, Rachel Helen.

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The effect of copper and manganese on phytoplankton in the Grand River (southern Ontario), Lake Erie and Pacific Ocean ecosystems.

Record Type:	Electronic resources : Monograph/item
Title/Author:	The effect of copper and manganese on phytoplankton in the Grand River (southern Ontario), Lake Erie and Pacific Ocean ecosystems./
Author:	Welbourn, Rachel Helen.
Description:	142 p.
Notes:	Source: Masters Abstracts International, Volume: 42-05, page: 1668.
Contained By:	Masters Abstracts International42-05.
Subject:	Environmental Sciences. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MQ87173
ISBN:	0612871738

The effect of copper and manganese on phytoplankton in the Grand River (southern Ontario), Lake Erie and Pacific Ocean ecosystems.
Welbourn, Rachel Helen.

The effect of copper and manganese on phytoplankton in the Grand River (southern Ontario), Lake Erie and Pacific Ocean ecosystems. - 142 p.

Source: Masters Abstracts International, Volume: 42-05, page: 1668.

Thesis (M.A.Sc.)--Ryerson University (Canada), 2003.

With the increased use and loading of metals into the environment, the accumulation of toxic metals by phytoplankton has become a concern. Trace metal interactions with phytoplankton are of particular interest due to the influence of phytoplankton on the biogeochemical cycling of metals in aquatic systems.

ISBN: 0612871738Subjects--Topical Terms:

676987
Environmental Sciences.

The effect of copper and manganese on phytoplankton in the Grand River (southern Ontario), Lake Erie and Pacific Ocean ecosystems.
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020 $a 0612871738
035 $a (UnM)AAIMQ87173
035 $a AAIMQ87173
040 $a UnM $c UnM
100 1 $a Welbourn, Rachel Helen. $3 1939953
245 1 4 $a The effect of copper and manganese on phytoplankton in the Grand River (southern Ontario), Lake Erie and Pacific Ocean ecosystems.
300 $a 142 p.
500 $a Source: Masters Abstracts International, Volume: 42-05, page: 1668.
502 $a Thesis (M.A.Sc.)--Ryerson University (Canada), 2003.
520 $a With the increased use and loading of metals into the environment, the accumulation of toxic metals by phytoplankton has become a concern. Trace metal interactions with phytoplankton are of particular interest due to the influence of phytoplankton on the biogeochemical cycling of metals in aquatic systems.
520 $a This study has chosen to focus on the response of phytoplankton to two trace metals in particular: copper (Cu) and manganese (Mn). Although both Cu and Mn are essential elements for phytoplankton, Cu is of particular interest as a toxicant.
520 $a Short-term bioassays were conducted in order to observe the response of phytoplankton from the Grand River (Southern Ontario) and Lake Erie to additions of various concentrations of Cu and Mn under natural conditions. Similar long-term bioassay experiments were also conducted in the Pacific Ocean. Experiments in the Grand River and the Pacific Ocean revealed no significant decrease in phytoplankton biomass or in photosynthetic efficiency with the addition of various concentrations of Cu and Mn. In Lake Erie, phytoplankton biomass was only adversely affected following relatively high additions of Cu of 60 nM, and only under certain conditions. These results seem to indicate that under the tested conditions, Cu toxicity may not be of particular concern to the phytoplankton of the Grand River, Lake Erie and Pacific Ocean ecosystems. (Abstract shortened by UMI.)
590 $a School code: 1428.
650 4 $a Environmental Sciences. $3 676987
650 4 $a Biogeochemistry. $3 545717
650 4 $a Biology, Microbiology. $3 1017734
690 $a 0768
690 $a 0425
690 $a 0410
710 2 0 $a Ryerson University (Canada). $3 1029949
773 0 $t Masters Abstracts International $g 42-05.
790 $a 1428
791 $a M.A.Sc.
792 $a 2003
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MQ87173