دورية أكاديمية
Size, settling velocity and density of small suspended particles at an active salmon aquaculture site
| العنوان: | Size, settling velocity and density of small suspended particles at an active salmon aquaculture site |
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| المؤلفون: | BA Law, PS Hill, I Maier, TG Milligan, F Page |
| المصدر: | Aquaculture Environment Interactions, Vol 6, Iss 1, Pp 29-42 (2014) |
| بيانات النشر: | Inter-Research, 2014. |
| سنة النشر: | 2014 |
| المجموعة: | LCC:Aquaculture. Fisheries. Angling LCC:Ecology |
| مصطلحات موضوعية: | Aquaculture. Fisheries. Angling, SH1-691, Ecology, QH540-549.5 |
| الوصف: | Scientific understanding of aquaculture interactions with the environment is limited, especially concerning the far-field transport and possible impacts of particulate wastes. A pilot study was carried out in southwest New Brunswick, Canada, in November 2008 to determine the size, settling velocity, and density of suspended particles at an active salmon aquaculture cage site. The model of Khelifa & Hill (2006) was fit to size-versus-settling velocity data to estimate the fractal dimension of flocs and the density of the component particles within flocs. Flocs had a larger fractal dimension and smaller component-particle density than in other studies, suggesting that particles from the aquaculture operation may be incorporated into suspended flocs with average settling velocities of 1 mm s-1. Variability in particle size and packaging was interpreted in the context of near bed velocity, tidal stage, and wind speed and direction. This analysis indicated that advection dominated observed variations in particle size and packaging. Indicators of resuspension, aggregation, disaggregation, and deposition were not detected in the time series. Advection of flocs away from the study site provides a mechanism to transport wastes over distances greater than 1 km prior to deposition; thus a settling class of 1 mm s-1 should be considered in depositional models of aquaculture wastes. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1869-215X 1869-7534 |
| Relation: | https://www.int-res.com/abstracts/aei/v6/n1/p29-42/; https://doaj.org/toc/1869-215X; https://doaj.org/toc/1869-7534 |
| DOI: | 10.3354/aei00116 |
| URL الوصول: | https://doaj.org/article/35c7037f03d247439c497e22dc75361c |
| رقم الأكسشن: | edsdoj.35c7037f03d247439c497e22dc75361c |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 1869215X 18697534 |
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| DOI: | 10.3354/aei00116 |