Prediction of benthic impact for salmon net-pens based on the balance of benthic oxygen supply and demand

The ratio between oxygen supply and oxygen demand was examined as a predictor of benthic response to organic enrichment caused by salmon net-pen aquaculture. Oxygen supply to the benthos was calculated based on Fickian diffusion and near-bottom flow velocities. A strong linear correlation was found...

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Veröffentlicht in:	Marine ecology. Progress series (Halstenbek) 1997-01, Vol.155, p.147-157
Hauptverfasser:	Findlay, Robert H., Watling, Les
Format:	Artikel
Sprache:	eng
Schlagworte:	Animal traps Beggiatoa Benthos Carbon Fish culture Flow velocity Marine Oxygen Salmon Salmonidae Sea water Sediments Supply
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container_title	Marine ecology. Progress series (Halstenbek)
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creator	Findlay, Robert H. Watling, Les
description	The ratio between oxygen supply and oxygen demand was examined as a predictor of benthic response to organic enrichment caused by salmon net-pen aquaculture. Oxygen supply to the benthos was calculated based on Fickian diffusion and near-bottom flow velocities. A strong linear correlation was found between measured carbon sedimentation rates and rates of benthic metabolism. This relationship allowed an estimation of oxygen demand based on sedimentation rates. Comparison of several production sites in Maine (USA) coastal waters showed that for sites where oxygen demand exceeded supply benthic impacts were high and for sites where oxygen supply exceeded demand benthic impacts were low. These findings were summarized in the form of a predictive model that should be useful in siting salmon production facilities.
doi_str_mv	10.3354/meps155147
format	Article
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source	Inter-Research; JSTOR Archive Collection A-Z Listing; EZB-FREE-00999 freely available EZB journals; Alma/SFX Local Collection
subjects	Animal traps Beggiatoa Benthos Carbon Fish culture Flow velocity Marine Oxygen Salmon Salmonidae Sea water Sediments Supply
title	Prediction of benthic impact for salmon net-pens based on the balance of benthic oxygen supply and demand
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