In this project, the development of the three main aquaculture production methods were evaluated through case studies, and analysed in regards of the environmental impacts of the productions. In addition, trends and tendencies within the development of the sectors were analysed through interviews. It was found that the Danish aquaculture sector as a whole has been stagnated since the early nineties. This stagnation was partly induced by legislative requests more or less corresponding with the national Danish objectives. Furthermore, it was observed that mariculture and freshwater fish farming has decreased the emissions of phosphor and nitrogen to the environment. Recirculated systems were found to have the lowest emission of nitrogen to the aquatic environment, but has the highest production cost per kg/fish produced. The present regulation of the Danish aquaculture production through allowed feed amount were found to be an inappropriate instrument when regulating the national frame of emission. It was concluded that the mariculture industry has few possibilities of development within the present regulation. Freshwater farming shows initiatives via “modeldambrug” and has possibilities of an enhanced water treatment. This does not lead to an increased production under the present regulation. The farming of eel in recirculated systems are highly dependent on the delivery of elvers, but could potentially expand by the culturing of new species or if the eel were domesticated. It was concluded that the high level of knowledge in Denmark, regarding water treatment technologies could have great potential if exported to the growing global aquaculture industry. Research in recirculated fish farming is a necessity to maintain the present developmental advantage.
|Uddannelser||TekSam - miljøplanlægning, (Bachelor/kandidatuddannelse) Bachelor|
|Udgivelsesdato||1 jun. 2005|
|Vejledere||Claus Henrik Heinberg & Erling Jelsøe|
- Freshwater fish farming
- Rainbow Trout
- environmental impacts