Size, settling velocity and density of small suspended particles at an active salmon aquaculture site

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,...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	BA Law, PS Hill, I Maier, TG Milligan, F Page
Formato:	article
Lenguaje:	EN
Publicado:	Inter-Research 2014
Materias:	Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/35c7037f03d247439c497e22dc75361c
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:35c7037f03d247439c497e22dc75361c
record_format	dspace
spelling	oai:doaj.org-article:35c7037f03d247439c497e22dc75361c2021-11-16T10:29:55ZSize, settling velocity and density of small suspended particles at an active salmon aquaculture site1869-215X1869-753410.3354/aei00116https://doaj.org/article/35c7037f03d247439c497e22dc75361c2014-11-01T00:00:00Zhttps://www.int-res.com/abstracts/aei/v6/n1/p29-42/https://doaj.org/toc/1869-215Xhttps://doaj.org/toc/1869-7534Scientific 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.BA LawPS HillI MaierTG MilliganF PageInter-ResearcharticleAquaculture. Fisheries. AnglingSH1-691EcologyQH540-549.5ENAquaculture Environment Interactions, Vol 6, Iss 1, Pp 29-42 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5
spellingShingle	Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5 BA Law PS Hill I Maier TG Milligan F Page Size, settling velocity and density of small suspended particles at an active salmon aquaculture site
description	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.
format	article
author	BA Law PS Hill I Maier TG Milligan F Page
author_facet	BA Law PS Hill I Maier TG Milligan F Page
author_sort	BA Law
title	Size, settling velocity and density of small suspended particles at an active salmon aquaculture site
title_short	Size, settling velocity and density of small suspended particles at an active salmon aquaculture site
title_full	Size, settling velocity and density of small suspended particles at an active salmon aquaculture site
title_fullStr	Size, settling velocity and density of small suspended particles at an active salmon aquaculture site
title_full_unstemmed	Size, settling velocity and density of small suspended particles at an active salmon aquaculture site
title_sort	size, settling velocity and density of small suspended particles at an active salmon aquaculture site
publisher	Inter-Research
publishDate	2014
url	https://doaj.org/article/35c7037f03d247439c497e22dc75361c
work_keys_str_mv	AT balaw sizesettlingvelocityanddensityofsmallsuspendedparticlesatanactivesalmonaquaculturesite AT pshill sizesettlingvelocityanddensityofsmallsuspendedparticlesatanactivesalmonaquaculturesite AT imaier sizesettlingvelocityanddensityofsmallsuspendedparticlesatanactivesalmonaquaculturesite AT tgmilligan sizesettlingvelocityanddensityofsmallsuspendedparticlesatanactivesalmonaquaculturesite AT fpage sizesettlingvelocityanddensityofsmallsuspendedparticlesatanactivesalmonaquaculturesite
_version_	1718426536952987648

Size, settling velocity and density of small suspended particles at an active salmon aquaculture site

Ejemplares similares