Investigation of broad scale implementation of integrated multitrophic aquaculture using a 3D model of an estuary
Autor: | Scott Hadley, Catriona Macleod, Craig R. Johnson, Karen Wild-Allen |
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Rok vydání: | 2018 |
Předmět: |
Chlorophyll
0106 biological sciences Food Chain 010504 meteorology & atmospheric sciences Nitrogen Fish farming Kelp Aquaculture Aquatic Science Oceanography 01 natural sciences Tasmania Stocking Salmon Animals Ecosystem 0105 earth and related environmental sciences geography geography.geographical_feature_category biology business.industry 010604 marine biology & hydrobiology Macrocystis Estuary Models Theoretical Seaweed biology.organism_classification Pollution Fishery Environmental science Water quality Macrocystis pyrifera Estuaries business |
Zdroj: | Marine Pollution Bulletin. 133:448-459 |
ISSN: | 0025-326X |
Popis: | A 3D ecosystem model was used to quantify changes in water quality brought about by salmon aquaculture in the D'Entrecasteaux Channel and Huon Estuary in southeast Tasmania. Macroalgae-based integrated multitrophic aquaculture (IMTA) was simulated and showed that IMTA is capable of reducing the increased chlorophyll concentration attributable to fish farming by up to 10–15% in large areas of the region, during the season of highest production. Kelp farms (Macrocystis pyrifera) recovered between 6 and 11% of the dissolved inorganic nitrogen (DIN) input by salmon aquaculture over a nine month period, with DIN remediation increasing linearly with farm size. Under a ten-fold increase in aquaculture to very high loads, a much lower remediation effect was found for both chlorophyll and DIN. Model results indicate that IMTA could have an important impact on reducing negative effects of finfish aquaculture on water quality providing that stocking rates are not too high. |
Databáze: | OpenAIRE |
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