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Effect of waste loading from freshwa...

Wetton, Michelle Sandra.

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Effect of waste loading from freshwater cage aquaculture on benthic invertebrates and sediment chemistry.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Effect of waste loading from freshwater cage aquaculture on benthic invertebrates and sediment chemistry./
Author:	Wetton, Michelle Sandra.
Description:	240 p.
Notes:	Source: Masters Abstracts International, Volume: 52-04.
Contained By:	Masters Abstracts International52-04(E).
Subject:	Agriculture, Fisheries and Aquaculture. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MR95811
ISBN:	9780494958117

Effect of waste loading from freshwater cage aquaculture on benthic invertebrates and sediment chemistry.
Wetton, Michelle Sandra.

Effect of waste loading from freshwater cage aquaculture on benthic invertebrates and sediment chemistry. - 240 p.

Source: Masters Abstracts International, Volume: 52-04.

Thesis (M.Sc.)--University of Manitoba (Canada), 2013.

This study combined sedimentation, sediment chemistry and benthic community data from three Oncorhynchus mykiss cage farms in Ontario, along with a laboratory bioassay to examine the effects of aquaculture waste loading. Waste loading rates, as well as sediment TC, TN, TP and metal (Cu, Zn) concentrations were highest beneath the cage and decreased exponentially with distance. During the 21-day bioassay, Tubifex (Oligochaeta, Naididae), Chironomus (Diptera, Chironomidae) and Sphaerium (Bivalvia, Pisidiidae) were subjected to a gradient of waste loading. Survival and growth of Sphaerium simile was highest at intermediate levels of waste loading. Chironomus riparius growth increased with increasing waste addition. Tubifex tubifex growth increased with exposure to fish waste, compared with the control. Until this study, there were no predictions for thresholds of effect at freshwater cage farms in the literature. The proposed threshold of effect on freshwater benthos is 2.0--3.0 g C m-2 day -1.

ISBN: 9780494958117Subjects--Topical Terms:

1020913
Agriculture, Fisheries and Aquaculture.

Effect of waste loading from freshwater cage aquaculture on benthic invertebrates and sediment chemistry.
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020 $a 9780494958117
035 $a (MiAaPQ)AAIMR95811
035 $a AAIMR95811
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100 1 $a Wetton, Michelle Sandra. $3 2101515
245 1 0 $a Effect of waste loading from freshwater cage aquaculture on benthic invertebrates and sediment chemistry.
300 $a 240 p.
500 $a Source: Masters Abstracts International, Volume: 52-04.
500 $a Adviser: Cheryl Podemski.
502 $a Thesis (M.Sc.)--University of Manitoba (Canada), 2013.
520 $a This study combined sedimentation, sediment chemistry and benthic community data from three Oncorhynchus mykiss cage farms in Ontario, along with a laboratory bioassay to examine the effects of aquaculture waste loading. Waste loading rates, as well as sediment TC, TN, TP and metal (Cu, Zn) concentrations were highest beneath the cage and decreased exponentially with distance. During the 21-day bioassay, Tubifex (Oligochaeta, Naididae), Chironomus (Diptera, Chironomidae) and Sphaerium (Bivalvia, Pisidiidae) were subjected to a gradient of waste loading. Survival and growth of Sphaerium simile was highest at intermediate levels of waste loading. Chironomus riparius growth increased with increasing waste addition. Tubifex tubifex growth increased with exposure to fish waste, compared with the control. Until this study, there were no predictions for thresholds of effect at freshwater cage farms in the literature. The proposed threshold of effect on freshwater benthos is 2.0--3.0 g C m-2 day -1.
590 $a School code: 0303.
650 4 $a Agriculture, Fisheries and Aquaculture. $3 1020913
650 4 $a Biology, Zoology. $3 1018632
650 4 $a Biology, Entomology. $3 1018619
690 $a 0792
690 $a 0472
690 $a 0353
710 2 $a University of Manitoba (Canada). $b Entomology. $3 2101516
773 0 $t Masters Abstracts International $g 52-04(E).
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791 $a M.Sc.
792 $a 2013
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MR95811