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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.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Effect of waste loading from freshwater cage aquaculture on benthic invertebrates and sediment chemistry./
作者:	Wetton, Michelle Sandra.
面頁冊數:	240 p.
附註:	Source: Masters Abstracts International, Volume: 52-04.
Contained By:	Masters Abstracts International52-04(E).
標題:	Agriculture, Fisheries and Aquaculture. -
電子資源:	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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