haku: @indexterm FISHING INDUSTRY / yhteensä: 119
viite: 4 / 119
| Tekijä: | Vassallo, P. (et al.) |
| Otsikko: | Dynamic emergy evaluation of a fish farm rearing process |
| Lehti: | Journal of Environmental Management
2009 : JUN, VOL. 90:8, p. 2699-2708 |
| Asiasana: | mediterranean countries fish farming fishing industry dynamic models environmental protection |
| Vapaa asiasana: | aquaculture gilthead seabream sparus aurata environmental sustainability emergy analysis model calibration and validation |
| Kieli: | eng |
| Tiivistelmä: | In the article that environmental sustainability of a fish farm rearing process was examined by means of emergy analysis. It is developed a model for an instantaneous emergy evaluation in an aquacultural system so that transformities, efficiency and effort spent at each moment during the fish rearing activity could be calculated. It is found the following: 1) by means of the model and dynamic emergy calculations it is possible to recognize step by step the importance of the various emergy contributions and verify where and when to modify the system to move toward optimum production of a sustainable product. 2) by the application of the model they confirmed that the emergy trends in a fish farm installation follow wide oscillations during a year due to variations in both internal and external emergy contributions. 3) to improve the sustainability of the analyzed system the amount, frequency and timing of these fluxes must be carefully considered. |
SCIMA