On the Environmental Impact of Freshwater Fish Farms in Greece and in Iceland
In the present study, we focused on the nitrogen and phosphorus levels generated by open flow freshwater fish farms in Greece and Iceland where salmonid fish are cultivated. There are several differences in the legislation and regulation of the aquaculture sector in Greece and in Iceland. Neverthele...
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ftzenodo:oai:zenodo.org:804117 2023-06-06T11:48:50+02:00 On the Environmental Impact of Freshwater Fish Farms in Greece and in Iceland T. Mavraganis H. Thorarensen M. Tsoumani C. Nathanailides 2017-05-30 https://zenodo.org/record/804117 https://doi.org/10.9734/ARRB/2017/32426 unknown https://zenodo.org/record/804117 https://doi.org/10.9734/ARRB/2017/32426 oai:zenodo.org:804117 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Annual Research & Review in Biology 13(1) 1-7 Aquaculture pollution salmonid fish Greece Iceland info:eu-repo/semantics/article publication-article 2017 ftzenodo https://doi.org/10.9734/ARRB/2017/32426 2023-04-13T21:38:01Z In the present study, we focused on the nitrogen and phosphorus levels generated by open flow freshwater fish farms in Greece and Iceland where salmonid fish are cultivated. There are several differences in the legislation and regulation of the aquaculture sector in Greece and in Iceland. Nevertheless, in both countries, environmental protection agencies need accurate information for nutrient processes in order to evaluate the environmental influence on surrounding waters by salmon aquaculture. Data were collected from surveys of 21 freshwater fish farms in Greece and 9 in Iceland. The surveyed farms practiced intensive production methods. The concentrations of nitrogen and phosphorus in farms’ discharges were used to estimate organic load generated. The collected data were compared with data from the literature for the production Salmonids for species cultivated in Iceland (Arctic charr, Atlantic salmon) and in Greece (Rainbow trout). The results of the analysis indicate that in both countries the highest concentrations of nitrogen and phosphorus discharges of fish farms exhibits a variability which can be attributed to the total biomass of produced fish, fish feed and feeding management protocols used, species cultivated and ambient temperature. During the last 30 years, there was a significant reduction in the amount of nutrients generated by fish farms, which to a great extent is a result of lower levels of protein content in fish feeds and improved feed conversion efficiency. It is estimated that over the past 30 years, the combined effect of reduced nitrogen and phosphorus content and the improvements in Feed Conversion Efficiency, resulted in about 50% reduction in the nutrients generated by every Kg of farmed fish produced. Nevertheless, this significant improvement was easily offset by and increased production of fresh water fish farms exhibited in both countries. It seems possible that legislative measures combined with improvements in technology and feed management of fish farms will continue to be ... Article in Journal/Newspaper Arctic charr Arctic Atlantic salmon Iceland Zenodo Arctic Annual Research & Review in Biology 13 1 1 7 |
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Aquaculture pollution salmonid fish Greece Iceland |
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Aquaculture pollution salmonid fish Greece Iceland T. Mavraganis H. Thorarensen M. Tsoumani C. Nathanailides On the Environmental Impact of Freshwater Fish Farms in Greece and in Iceland |
topic_facet |
Aquaculture pollution salmonid fish Greece Iceland |
description |
In the present study, we focused on the nitrogen and phosphorus levels generated by open flow freshwater fish farms in Greece and Iceland where salmonid fish are cultivated. There are several differences in the legislation and regulation of the aquaculture sector in Greece and in Iceland. Nevertheless, in both countries, environmental protection agencies need accurate information for nutrient processes in order to evaluate the environmental influence on surrounding waters by salmon aquaculture. Data were collected from surveys of 21 freshwater fish farms in Greece and 9 in Iceland. The surveyed farms practiced intensive production methods. The concentrations of nitrogen and phosphorus in farms’ discharges were used to estimate organic load generated. The collected data were compared with data from the literature for the production Salmonids for species cultivated in Iceland (Arctic charr, Atlantic salmon) and in Greece (Rainbow trout). The results of the analysis indicate that in both countries the highest concentrations of nitrogen and phosphorus discharges of fish farms exhibits a variability which can be attributed to the total biomass of produced fish, fish feed and feeding management protocols used, species cultivated and ambient temperature. During the last 30 years, there was a significant reduction in the amount of nutrients generated by fish farms, which to a great extent is a result of lower levels of protein content in fish feeds and improved feed conversion efficiency. It is estimated that over the past 30 years, the combined effect of reduced nitrogen and phosphorus content and the improvements in Feed Conversion Efficiency, resulted in about 50% reduction in the nutrients generated by every Kg of farmed fish produced. Nevertheless, this significant improvement was easily offset by and increased production of fresh water fish farms exhibited in both countries. It seems possible that legislative measures combined with improvements in technology and feed management of fish farms will continue to be ... |
format |
Article in Journal/Newspaper |
author |
T. Mavraganis H. Thorarensen M. Tsoumani C. Nathanailides |
author_facet |
T. Mavraganis H. Thorarensen M. Tsoumani C. Nathanailides |
author_sort |
T. Mavraganis |
title |
On the Environmental Impact of Freshwater Fish Farms in Greece and in Iceland |
title_short |
On the Environmental Impact of Freshwater Fish Farms in Greece and in Iceland |
title_full |
On the Environmental Impact of Freshwater Fish Farms in Greece and in Iceland |
title_fullStr |
On the Environmental Impact of Freshwater Fish Farms in Greece and in Iceland |
title_full_unstemmed |
On the Environmental Impact of Freshwater Fish Farms in Greece and in Iceland |
title_sort |
on the environmental impact of freshwater fish farms in greece and in iceland |
publishDate |
2017 |
url |
https://zenodo.org/record/804117 https://doi.org/10.9734/ARRB/2017/32426 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic charr Arctic Atlantic salmon Iceland |
genre_facet |
Arctic charr Arctic Atlantic salmon Iceland |
op_source |
Annual Research & Review in Biology 13(1) 1-7 |
op_relation |
https://zenodo.org/record/804117 https://doi.org/10.9734/ARRB/2017/32426 oai:zenodo.org:804117 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.9734/ARRB/2017/32426 |
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Annual Research & Review in Biology |
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13 |
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1 |
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1 |
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7 |
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1767954444797870080 |